sign in sign up
<<
Home , Altoona Area High School, Bayard (Jacksonville), CBY, CFCB, CFCO, CFNV

DXer's DREAM THAT ALMOST WAS SHASILAND HadioTV EXPERIMENTER AUGUST -SEPTEMBER 75c

BUILD COLD QuA BREE

... a 2-FET metal moocher to end the gold drain and De Gaulle! PIUS Socket -2 -Me CB Skyhook

No -Parts Slave Flash

Patrol PA System

IC Big Voice

www.americanradiohistory.com EICO Makes It Possible Uncompromising engineering-for value does it! You save up to 50% with Eico Kits and Wired Equipment.

(%1 eft ale( 7.111 e, si. a er. ortinastereo Engineering excellence, 100% capability, striking esthetics, the industry's only TOTAL PERFORMANCE STEREO at lowest cost. A Silicon Solid -State 70 -Watt Stereo Amplifier for $99.95 kit, $139.95 wired, including cabinet. Cortina 3070. A Solid -State FM Stereo Tuner for $99.95 kit. $139.95 wired, including cabinet. Cortina 3200. A 70 -Watt Solid -State FM Stereo Receiver for $169.95 kit, $259.95 wired, including cabinet. Cortina 3570.

The newest excitement in . 100% solid-state and professional. Fun to build and use. Expandable, interconnectable. Great as "jiffy" projects and as introductions to electronics. No technical experience needed. Finest parts, pre -drilled etched printed circuit boards, step-by-step instructions. EICOGRAFT.4- Electronic Siren $4.95, Burglar Alarm $6.95, Fire Alarm $6.95, Intercom $3.95, Audio Power Amplifier $4.95, Metronome $3.95, Tremolo $8.95, Light Flasher $3.95, Electronic "Mystifier" $4.95, Photo Cell Nite Lite $4.95, Power Supply $7.95, Code Oscillator $2.50, «6 FM Wireless Mike $9.95, AM Wireless Mike $9.95, Electronic VOX $7.95, FM Radio $9.95, - AM Radio $7.95, Electronic Bongos $7.95.

Two years ahead! Model 7923 All Solid -State 23 -Channel 5W Transceiver. Citizen's 4 exclusives: Band dual -crystal lattice filter for razor-sharp selectivity; efficient up-converter frequency synthesizer for advanced stability; precision series -mode fundamental crystals; Small: only 3"H, 8'W, 81/4"D. $189.95 wired only. The best buy in tube-type CB-"Sentinel-Pro" 23 -channel dual conversion 5W Transceiver $169.95 wired only. EICO Trans/ Match (Model 715) is a professional test set designed for complete checking of ham and CB equipment. Kit $39.95; Wired $59.95. Truvohm Professional Portable Multimeters by EICO. Automotive The industry's greatest V -O -M values. Designed, EICO 888-Car/Boat made to Eico's high Engine Analyzer. standards of professionalism. Each complete with batteries & test leads. For all 6V/ 12V systems; 4, 6, Backed 100% by famous EICO warranty. 8-cyl. engines. Model 100A4, 100,0000/ V, $34.95. Now you can keep Model 30A4, 30,0009/V, $19.95. your car or boat Model 30A3, 30,0004/V, $15.95. engine in tip-top shape Model 20A3, 20,0009/V, $12.95. with this solid-state, portable, self -powered universal engine analyzer. Completely tests your total Model 4A3, 40009/V, $9.95. ignition/electrical system. Model 1A1, 10000/V, $5.95. Complete with a Tune-up & Trouble-shooting Manual. Model 888; $49.95 kit, $69.95 wired. ¡Test Equipment' lEICO 100 best buys to choose from. "The Professionals" -laboratory precision at lowest FREE 968 CATALOG RTVE-8 Model 460 Wideband Direct-Coupled EICO Electronic Instrument Co., Inc. 5" Oscilloscope. DC-4.5mc 283 Malta St., Bklyn., N. Y. 11207 for color and B&W TV service Send me FREE catalog describing the full EICO and lab use. Push-pull DC vertical line of 200 best buys, and name of nearest dealer. amp., bal. or unbal. input. Automatic Name sync limiter and amp. $109.95 kit, $149.95 wired. Address Model 232 Peak -to -Peak VTVM. A must for color or B&W TV and industrial use. City 7 non -skip ranges on all 4 functions. With exclusive Uni -Probe $34.95 kit, $49.95 wired. State 7lp

www.americanradiohistory.com AMERICA'S GREATEST VALUES IN SCIENCE LABS AND COURSES! Now! Space Age Science for Everyone AMAZING KIT -A -MONTH CLUB You get ALL the following in nine monthly kits!

ELECTRICAL LAB RADIO LAB AND COURSE ATOMIC ENERGY LAB nue All W. equipment for basic electrical experiments with YOU BUILD A SHORTWAVE AND BROADCAST RADIO. ATOMIC CLOUD CHAMBER WITH PROJECTOR ILLUMINATOR. See Wheatstone Bridge /measures resistance/. Mv9 ueleer and the vapor trails of alpha and bet t? lee, and of cas/_Y.,iresC tee De-rnegnelirer, Therinenuple, Mystery Shock Be., CARBON MICROPHONE as t', AUDIO AMPLIFIER, SNNTHARISI.OPE. Shows exploding Continuity Tweet, Extinction Voltmeter, EAOIO.TRANSMITTFR. for :ode or eo.ce- 1, ELECTROSCOPE - motel housed tale Solenoid Coen Tank Elertremagnetir RIPPLE TANK WAVE GENERATOR with end Magnifying Viewer. Ma,tieea ree bock. Relay. Neon La . Galven.teIer, ct fable frequency. Involle in the ground radio Can and lests sample sources. Induction Coll, Rea ttttt, Chem.cah and , nderstandma of wave r SAFE,ADtOAcnve MATERIALS. Weir° Sevres Electrodes tar Plar.ng end Electrolysis. CODE PRACTICE OSCILLATOR wirr manual, - .n handy consmer and Uranium O.e. I/ FOR SAFETY a step.dawn loaletlen Full -Stepsea le a Ham Llnm ce Al l yet need instruction* end explanation§ epee vP\ Clwe CheNx 'heroi.rmer provides required current. Horn Lice Al -.a. dgege the fescíneting field el nurleor physics. t STROBE LIGHT RADIO, SERVICING TOOLS SPECTROSCOPE a/ SIGNAL TRACER. : .- -a.,.e e,F,Ic Omar ng Analyzesspectra of glowing gases. See end A Neon Semp that flashes o Intervals you ca synchronize Sent Trent identity the toes. A with the speed of ro ing o vibrating objects in order quotHe er featuring a easy -to -reed WIG I "Treece' their motion to permit close study and c, .ele CONTINUITy TESTER. em. In nd e d sng checking frequencies and RPM. Flashes are rimed powerful system i.e het a includes by a oren'a a^: esr,e-ag.s secE?ih .tight spectrum. De. .teen variable frequency mediator with o range of ±10 e. Burner aces 3 20 to 600 cycles per second. o Wee Now Spectral "Simplified Radie end Tv Servicing." temp. Full instructions rear theory end on.. .PHOTOELECTRIC RELAY DC POWER SUPPLY ULTRAVIOLET LAMP Crystal Photocell, Electronic Amplifier, Relay, large Cendenring Changes regular 110.120V AC la the car - direct 140 welt filler type UV LAMP. Heavy tolet rehire,. Lens ln Cabinet Mount. Features a .off or holding rani required for electronic pteieoa and expo,- 6 foot Cord. Rotary Switch. Produces do,,ling color Circuit operation. Sens,Cvity Control. Plug menthe. am r. n Power Translermer, Va- effects with i vs ale block light. Has many uses n Outlet for controlled c Ure fat Tube Readier.s TO; TO MID Cep r Fil- IIe field, of M,eeralagy, Crime Detection and alarms, < . Open n I I5V uumrCrr . r eSeie., Sc e aclude Invisible Tracer AC. A sell Ink, Pew. heel, r teeny exciting ...i e need der. Fluorescent ® woodmen, C s ANALOG COMPUTER MICROCRAFT LAB SURVEYOR'S TRANSIT Electronic Computer multiplies. dlvida, calculates pewee, A pnelrel Ftae,It. 6Y e I eels. Set up the problem on teeof two .ten . Aeeg tete..+.. with M Ron9r F.ndet r Reticle Fer rr r meters end find Me a ta rn ..r e r ing attente. :ing Fer toh halzemal and n Maneolr - Levering Heed with Thumb Screw use ah.no - .,ed Spier level. Clomps under heed Sold s of Tripod. liege not n ciuded.i Instruction. inter . elementary honeying, range -finding. LIGHT AND OPTICS LAB 11 PHOTOMICROGRAPHY CAMERA TELESCOPE AND MOUNT feline' *Meal projects for the study el light. Eg.. ..t Phelegraphr r.,. - .r - -,- -.. -- includes: flee Precision Len,.., Prism, Polarizing Ftre,t. slides. En' - Rex ern be... E.tends re 30" length. Five Whereon Grating, Miner, Telescoping Tubing, ground Band polished lenses Remsden Eyepiece. bn. Mounts, Tube Holden and Brackets. Sturdy Equatorial Mevne makes it easy la fol. All the pant end instructions to bald a Comero low the movement of heavenly bodies. Mount Obscures. Camera Lucid,, Patoriecope, and lios longs lot waaren legs the.. - many other optical devices. ard a y= pod fleas are re,I:2.1..-.r'eer e.xv nº rev.re.em .f Ito . ` \ PHOTOGRAPHY LAB LIGHT -RECEIVER WEATHER STATION A PRECISION OSMM ENLARGER... honzanto, TEANSMITTER ce-:. sis of e Light Sow, o Meduletin9 A REMOTE READING ANEMOMETER AND WIND - type with twin condensing lenses and 3' Retleceor Olaphregin and an Op',cel Prejenion VANE... Fleehine Neon LIgAh on indoor inde m/L memoir lens. Produces quality enlarge Sysre... The RECEIVER .s e Two -Stage Audis color board spew wind speed end Attectlon. _JJ up lo e'a10'. Contact Pant frame 7 Amplifier, controlled by a Pharo bhh Power Cord makes oil conneHione safe. cif takes, negatives up 31/2".41/4'. 3 Piesee electric Cell that arches 100 ft. of lead in Win. plus-Alt Tenk Eanm- s It I Developing Treys, 11.. Neon Sel.Ited. Trey Theo the projected light ` beam with indenter column. Sling psycho...- ! I - ..emeNe, film Clips, Developing Chemicals. t - and causes te original .Mr measures relative humidity. Rein Gauge VV Printing end Enlarging Paper and DOA,.em und waves berepro. measures rainfall to 1/100 inc ALSO Cloud Handbook. Make quality enlargements for 6f. duced ht the theadphone. Chore Weather Mop and Forecasting Manual- Mole streets for eery 0e. i,rll .nstrunons. 1.111.. en a 1iº5r Beam a complete .erup for amateur meeorology. __ You get ALL the equipment for AU the above in nine monthly kits SEND OO PAY FOR EACH KIT ONLY TO ENROLL ONLY $75THAT YOU RECFIVE Take as few as you wish-or get all nine ... it's up to you!

SOME QUESTIONS ANSWERED NO OBLIGATION-NO RISK! * You take only as many kits as you wish. Q. How is it possible? It seems incredible to be able to get all the equipment shown above in just nine kits - at only $4.75 per kit! * All kits on 2 weeks approval. You return A. The low overhead of the membership plan is just part of the answer. * may any kit for full refund. The real key to this amazing program is ABSCIub's especially designed multi -use equipment. For example: the Microprojector Send coupon today-get your first kit on its way! quickly and easily converts into the Spectroscope, Photo Enlarger leU mu «TRIAL MEMBERSHIP COUPON1E23113138318 and Cloud Chamber Illuminator. Similarly, the Transit Head doubles as a Telescope Mount. Such multi -purpose design makes possible I wish to try the Kit -a -Month Program: I this all -science program at a price everyone can afford. D I enclose $1.00 to enroll and $4.75 for the first kit postpaid. I Q. May members choose the order in which they receive their kits? I enclose $1.00 to enroll. Send first kit COD. I'll pay COD fee. I A. Yes. With the first kit members receive a fist of the equipment and projects contained in each of the remaining eight kits. With this I understand if I am not satisfied with the first kit I may return information they are able to choose the kit sequence that best suits it for a complete reftmd including the $1.00 membership fee. I their particular interest.

Q. Can members get their kits all at once instead of onea-month? NAME A. Yes. At any time members can have the balance of their kits sent in one'shipment. We recommend that you start on the kit -a -month ADDRESS plan because the monthly spacing will give you time to get the full measure of knowledge and enjoyment that each kit has to offer. CITY AND (PLEASE PRIN ZIP CODE AMERICAN BASIC SCIENCE CLUB, INC. NO EXPERIENCE NECESSARY - IT'S FUN! IT'S EASY! 104 Heiman, . 78205

RADIO-TV EXPERIMENTER is published bimonthly at $4.00 per year, by Science & Mechanics Publishing Co. 505 Park Avenue, , N.Y. 10022. Second class postage paid at New York, N.Y., and at additional mailing office. Copyright 1968 by1 Science and Mechanics Publishing Co.

www.americanradiohistory.com as August/ P September ABC ' HIGH FDELLTY M 1968 ..s Editor SCIENCE EXTRA JULIAN M. SIENKIEWICZ WA2CQL/KMD4313 45 What Gives With Old Sol? Rumor has it that the sun has been around for Managing Editor a good many more moons than man has. Ques- RICHARD A. FLANAGAN tion is, will man ever get around to figuring out KQD2566 exactly what makes old sol tick? Technical Editor CLIFFORD L. FORBES SPECIAL CONSTRUCTION FEATURE Art Editor 41 Gold Grabber-a marvelous little metal moocher JIM MEDLER that just may end up at Fort Knox Editorial Assistant HELEN PARKER SPECIAL SWL & DX FEATURES KQD7967 51 Shasiland-the DXer's dream that almost was Art Director 57 Wanna Join A DX Club? ANTHONY MACCARRONE Associate Art Director QUICK -N -EASY BUILD -IT PROJECTS - JOHN YUSKO 49 CB Skyhook Mit Sock-ideal for CB clifi- Cover Art Director dwellers IRVING BERNSTEIN 55 "No -Parts" Slave FlashTultra-small, ultra -sim- ple, Art Associate ultra -cheap, and light -activated! JACK GOLDEN 67 Hi -Power Crowd Getter-its integrated circuit gives transistors the pizzaz most plain ain't got Manager JIM CAPPELLO 71 Snack Pack Commander-would you believe a public-address system in a lunch box? Production Manager CARL BARTEE FUN PROJECTS AND FEATURES Assistant Production Manager 58 Did You Hear That Star? STEVE LEVINSON 79 Flower Power Signalite-nifty, this Nixie with a Production Assistant penchant for posies PAULA S. HELFANT 88 By The Sea-cartoon page President and Publisher ELECTRONICS FEATURES B. G. DAVIS 64 Look! Instant Me! Executive Vice -President 70 Imagineering-,design tips from our readers and Assistant Publisher 75 Lab Check-Euphonics ultrasonic intrusion JOEL DAVIS alarm Vice-President and Editorial Director 85 The Hoofin' Heart HERB LEAVY, KMD4529 Vice-President and COMMUNICATIONS: CB HAM SWL Production Director LEONARD F. PINTO 27 CB Rigs & Rigmarole 74 Propagation Forecast Vice -President and Treasurer 77 Ham Traffic-kiboshing hamdom's hooligan VICTOR C. STABILE breed RADIO-TV EXPERIMENTER, Vol. 25, No. 1, Is 83 Lab Check-Amphenol 750 CB transceiver published bimonthly by SCIENCE & MECHAN- ICS PUBLISHING CO., o subsidiary of Davis Publications, Inc. Editorial, business and sub- REGULAR DEPARTMENTS scription offices: 505 Pork Ave., New York, N.Y. 10022. One-year subscription Isis issues) 21 Positive Feedback-editorial chitchat -$4.00; two-year subscription 112 issues)- 24 Bookmark-by Bookworm $7.00; and three-year subscription 118 issues) -$10.00. Add 75c per year for postage out- 31 New Products side the U.S.A. and . Advertising 38 Literature Library offices: New York, 505 Park Ave., 212-752- 6200; : 520 N. Ave., 312-527- 40 Ask Me Another-so ask! 0330; : 1709 W. 8th St., 213.483- 3582; : Punie & Brown, 3108 Piedmont Rd., N.E., 404-233-6729; Long Island: Len Osten, WHITE'S RADIO LOG, Vol. 50, No. 1-Page 89 9 Garden Street, Great Neck, N.Y., 516-487- 3305; Southwestern advertising representative: Cover photo by Leonard Heicklen Jim Wright, 4 N. Eighth St., St. Louis, 314- 241-1965.

4. RADIO-TV EXPERIMENTER

www.americanradiohistory.com SPECIAL 16 -PAGE SECTION RADIO SHACK ged th F1 litTORE CELEBRATION!

Ivl 1.0 s ,+ no, /! %: B O1 To DlVlpp divisor ?a' s fec (inner umber to be e) ' dvAl leotletl pP°Sifewer on ii rscale).unit inde®iS:;1e013. AiHILE ® FREEwith, any. order:. muooex(0iof thrrscal arup4 otplrertönscale). Locale COMPUTER!. º%.¡ scale, as °pPosite tner scale, a \, on 50 the outer (in person or t:y mail) from Buy anything the or- Radio Shack pages using 51 y¿ following we'll automati- der blank on page 20 and 'riy",1'rpe \ , handy Sb cally include one of our 71/err long and MILE" COMPUTERS. It's stock to give years of use. made of tough can. 8 FUNCTIONS and divides as fast as you It multiplies figures DIVIDES dial. It computes interest, MULTIPLIES twirl the COMPUTES of auto com- INTEREST all kinds oRIURES percentages, does 'FIG PER 12 gal - CENT you used VING TIMES putations. For example: ERAGE many SPEEDS miles. How FUEL Ions of gas to drive 180 CONSUMPTION Set the inner BETWEEN did you get per gallon? CAS miles 18.0 and'. circle 12 against the outer black 10. It is 15 --- read the answer at the Din illustration. Complete de- SHAK the RAA as shown in DIVISION C functions OF r" for all computer catalog tailed instruction no printed on the back. 60 446 are clearly SOr

Store Addresses, Order Form, See Page 20 5

www.americanradiohistory.com -KIT 8 -WATT STEREO AMPLIFIER SEMI

Designed and Made in U.S.A.!

Accessory a pre -wired solid state Kit Your chance to scoop up own for for only $9.95! Devise your 8W Amplifier stereo amplifier skills are re- custom -installation! No engineefing one the leads. 2 volume controls, ONLY 395 quired! Just add tone control. channel, plus a wide -range for each with frequency response Input impedance is 600Kí.? Transformer Operating either on AC or bat- andtBattery from 50-20,000 cps. crystal or Line Cord the amplifier accepts 8-1652 speakers; and Clips tery, stereo tuner. Trans- Switch Cob/es ceramic cartridge of AM/FM You needn't shop around 30-1968, Ship. output circuit. wt. 1 lb. formerless accessory kit especiallyb9 Net 3.95 for other parts. Purchase the 1 right) . #0 designed for the amplifier (see

THE COMPLETE STEREO PHONOGRAPH MOTOR/TURNTABLE SEMI -KIT PACKAGE! 2495

Hook Up, 4 -Speeds! Quiet! Install 49 Simple to Hook Up! Anywhere! Use with stereo amplifiers! Vibration -free AC opera- tion assured by rubber shock -mounted friction drive motor. Speed changes controlled by idler driving the 8" metal x 8 -Watt Stereo Amplifier Semi -Kit Complete turntable. 4/z 33/g" mounting centers; 21/2" below base plate. #42-129; #278-1255, AC Line with Accessory Kit! Cord, .39 net. Turntable, Tone Arm and Stereo Cartridge! Two 8 -Inch Round Speakers! No Extras to Buy! Special Manufacturer's Closeout! 30-1933, Package, Wt. 11 lbs. Nef 24.95 Purchase! 8" ROUND SPEAKER STEREO ARM/ The Perfect Low -Cost 2 CARTRIDGE Extension or Replace- 449 ment Speaker! for Simple to Mount! Straight Line Design! Use with semi -kit shown above! Our huge 190 -store buying power brings Modernistic 8" tone arm has off -set head, and high you this quality speaker at sensational output stereo crystal cartridge (2! V) with dual savings! Buy several - bring stereo to synthetic sapphire styli. Stylus pressure is adjustable every room in your home! U.S.-made. by variable spring tension. Comes with finger lift. Magnet weight: 1.47 oz. 8 ohms. :#42-128 #40-1271.

Store Addresses, Order Form, See Page 20 u RADIO-TV EXPERIMENTER

www.americanradiohistory.com GREAT SAVINGS ONL1stJc RECORDS, PRERECORDED TAPES!

3 -HOUR LONG PLAY E K 1T TBk BTWMRt\l PRE-RECORDED STEREO TAPES

4 -Track, Reel -to -Reel! Same as Getting 6 Stereo Tapes! A95 Top Artists Perform Each Top Arrangements! SEPARATELY: $5.95 EACH 7" Reell 33/4 IPS! In Sets of 3

QUIET : Pool some of America's EVENINGS AT THE SYMPHONY: CURTAIN UPI: 62 all-time hit show top jazz musicians, mix in top-notch These 8 complete classical master- tunes are combined to bring you the musical repertories, and the result: pieces give you an outstanding con- musical magic of Broadway theater! a really great 47 -hit tape! Pete Jolly cert. Selections by Respighi, Khach- Selections from My Fair Lady, West and Bob Freeman are just two of aturian, Debussy, Mozart, Tchaikov- Side Story, Gigi, Bells are Ringing, the artists. A "must" for every jazz sky and Strauss, all performed by , many more favorites! lover! #51.3001 famous conductors and orchestras. #51-3003 #51-3002 TRIPLE PLAY 8 TRACK STEREO TAPE CARTRIDGES Available Only at Radio Shack

3 Complete Stereo Albums -` IN ONE CARTRIDGE / 30 full -Length Tunes! 495EA.

THE HERITAGE OF BROADWAY: A variety of artists SAY IT WITH STRINGS: Marcel Lenoir conducts -30 "belting -out" 30 show -tune greats of our time! A family greats including Tenderly," and "How Deep is the favorite. #51.3004 O cea."n 30 7

THE MELODIES OF LOVE: Carol Lawrence, Lena Horne FOREVER FAVORITES: Features a variety of songs by the and more stars give you hours of soothing music. #5I-3005 HiLo's, Ink Spots, Pied Pipers, Fred Astaire, etc. #51-300B

SOUNDS SMOOTH: "I'm in the Mood for Love," "Shine AND THEN THEY WROTE: Hits of Porter, Gershwin, on Harvest Moon" - and other popular instrumentals. Lerner and Loewe, etc., played by the Kingsbridge #51-3006 Strings. I SI -3009 3 -Disk Audio Fideli Stereo LP Sets! ORGAN IN ARMED FORCES STEREO SOUND EFFECTS 3 Record 3 Record Stereo Set Stereo Set

An Audiophile Series standout! 36 495 The drama of actual combat; the 495 selections engineered to bring out sound of airpower; a nuclear ex- the best in any stereo system. plosion and the fast -paced action Leon Berry at the giant Wurlitzer of the world's greatest aircraft organ; Al Melgard at the Chicago Studio Quality! carrier. Listen to ceremonial mili- Studio Quality! Stadium organ, and Eddie Osborn 20-20,000 CPS! ta,ry drills and marches. 3 records 20-20,000 CPS! at the Baldwin and bongos. 2 at what you'd expect to pay for hours of entertainment! #50-2000 one! #50-2001 for Store Addresses, Order Form, See Page 20

AUGUST -SEPTEMBER, 1968 7

www.americanradiohistory.com RADIO SHACK "dig' th IFIgTORE CELEBRATION!

What's your project for our "Build In" radio? Here's a wired transistor radio in 3 pieces. Dextrous do-it-yourselfers should have a field -day with this one. You carpenters, metal -workers and gift designers will really appreciate Radio Shack's novel "Build In" -a 6 -transistor superhet that's really a kit that isn't a kit. Confused? Part one is the radio, 100% wired, installed in a crystalline 21/4 x 1 x 31/2" case with the tuning knob sticking out of one end, and 8 wires out of the other. Part two is a separate volume con- trol with built-in switch, knob, and,, soldered leads. Part three is a 21/4" PM speaker installed in a plastic case, with soldered leads. The three parts (plus a flat 9V battery, not in- cluded) can be installed in, on, or under anything, "BUILD -IN" RADIO in just about any desired angle or position. And you don't have to be an engineer - Radio Shack's VOLUME geniuses have provided a simple, idiot -proof lashup CONTROL pictorial. Now all you need is the price (just $6.98, AND SWITCH Cat No. 12-1150) and some Yankee ingenuity! 'Whether you hide "Build In" in a jug of corn likker, junior's wagon or Tilliés sewing box, the result is sure to please. The basic radio itself looks like a little jewel, a real work of art - our photo doesn't do it justice. And the "kit that isn't a kit" is another of Radio Shacks's exciting exclusive products that can't be bought elsewhere. Get a "Build In" at your nearest store. Radio Shack PM SPEAKER IN CASE For Store Addresses, Order Form, See Page 20 RADIO SHACK PROJECT BOOKS (4c A PROJECT) "50 EASY TO BUILD "A MODERN TRANSISTOR EACH M1íOfiïíti':: ya SOLID STATE PROJECTS" WORKBOOK" d,ranSt1(j( . BOOK hYJs;hHOEév Build your own tran- Build your own wireless sistor radios, electronic microphone, AM broad- organs, amplifiers, code cast tuner, audio pre - oscillators, megaphones, amp, PA system, experi- 82 generators, etc. Ideal for menter's power supply, hobbyists. etc. 50 schematics. 62-1050 Net 2.00 62-2025 Net 2.00

ti RADIO-TV EXPERIMENTER

www.americanradiohistory.com RADIO SHACK SPEAKERS, MIKES, TOOLS FOR THE EXPERIMENTER BUILD "EI'St' MIGHTY "ge411;01t113 SUB -MINI SPEAKER 4" Acoustjc Suspension cELiIIiarIo! FE -103 Speaker System! PM SPEAKERS FOR The fabulous Realis- MINIATURE tic FE -103, complete TRANSISTOR PROJECTS, RADIOS with cabinet construc- tion details as pub- 8 Ohm Impedance lished in Electronics 79 illustrated! 30-17,000 Small in size but big in sound! Three cps; 15 watts-; 8 sizes to choose from: 21/2", 21/4", or 2". All for the same bargain price! 40-1197, FE -103, Wt. 5 lbs. Net 7.95 40-247, 21/2", Net .98 CONTOUR NETWORK KIT. 40-246, 21/4", Net .98 With instructions. 40-245, 2", Net .98 40-808, coil, capacitor, etc., Net 3.95 ONLY 98c EACH! MIDGET DUoFONETM EARPHONES HEADPHONES FABULOUS THERMO-ELECTRIC For Trnnsistor Radios Swifchable Mono/Stereo! REALLVYORKS! I GLUE GUN 98` 695 60 -Second Bonding Plus Instant -set Caulking! No Clamping! No Cleaning! Resp. 50-9000 cps. With replaceable earplug, cord. Wide -range dynamic Makes all other kinds of 10 ohms. phones for mono or gluing obsolete! Uses unique 33-175, Wt. 2 oz. Net .98 stereo ! 80, matching 4-160. hot -melt glue sticks: melted 33-174, w/3/32" plug, Net .98 33-196. '/t lb. 6.95 glue bonds permanently in 60 seconds, providing a flexible bond that's perfect CRYSTAL LAPEL CRYSTAL MIKE for furniture, pottery, metal, leather, plastic or fabric. MIKE CARTRIDGE Use with white sealer sticks for water proof caulking. For Recorders, Glue and caulking included. 64-2860, Gun, 2 Ibs..Net 5.99 PA, Paging! 64-2861, 7 Glue sticks, I lb. Net .49 89c 599 64-2862, 7 Sealer Sticks, I lb. Net .49 189 for make -or -mend jobs Precision made crystals! Sensitive! Concealable! Re- CERAMIC MAGNETS sponse: 200-300 cps. Response up to 7000 cr. POWERFUL oz..... Net 1.89 270-0%, 8 oz...... Net .89 13-100, Wt..8 1,000's of Home, 15c 25c Office, Auto Uses! 10c LAVALIER DYNAMIC MIKE Each 95 EachFo Per Pair 64-1885 Singly Neck/Hand/Desk Use! IOr Pencil -slim hi -Z for use at home, studio, or in PA and guitar sys- 64-1875 tems! With cord, stand. 50K. FOR 100 33-928, Ship. -et. 2 lbs. Net 6.95 10

LOW COST 25-W. OUR OWN 60/40 STEEL CATCH-ALL ASSORTED ELECTRIC SOLDERING IRON SOLDER STORAGE BOX HARDWARE 6"Hx8l/"Dx 189 Each 6"Hx81/4"Dx 69c 53/4"W 53/4"W 12 & UP Precision designed! Comes complete 99c with UL Cord and Each Plug. Uses 117V 59c 195 Over 600 pieces! Something U.S. made with superac- for everyone! All AC/ DC. 4 draws with adjustable here 64-2182, tive rosin core. Fits fed. compartments. brand new-no sweepings! I lb. Net 1.89 specs. QQ-S-571d One full pound. Compar- 64-2050, 2 ,bs. Net 1.95 64-2178, Extra cop- 64-0002 Net .69 able value: 54.50! 64-2890, Wt. I lb..... Net .99 per Tip .. Net .25 For Store Addresses, Order Form, See Page 20 AUGUST -SEPTEMBER, 1968 9

www.americanradiohistory.com Recommended by Reviewers, Educators! NEW Created by Radio Shack Engineers to give youngsters and adults alike a ground floor introduction to the theory and Science practice of modern electronics. You build the way the "pros" do - by breadboarding - so soldering is easy. You can move or interchange parts, even additional Fair '° experiments. Detailed pictorials and schematic diagrams, add-on ideas, and all necessary parts are included in each ELECTRONIC KITS fascinating project. An excellent classroom tool!

NEW! EXCITING! EASY TO BUILD!

Science Fair M SIREN KIT Ear -Splitting Volume! A Great Burglar Alarm! Loud Automatic 95 "Rise -Fall" Sound! Adaptable for Bikes! Construct a powerful "rise -fall" oscillator that doubles as a siren or burglar alarm! A wailing sound very similar to a police siren can be produced with ear splitting volume loud enough to be heard on a crowded street. The alarm circuit is completely automatic; no button has to be pushed to control the oscillator's "wailing" rate. Use as a burglar alarm to protect your home while you're away. When activated, a simple microswitch strategically located in a doorway, 'window or vehicle, turns the oscillator on at full blast to deter any intruder. 23-468, AA Battery. 4 Req. (Portable use) Ea. .10 270-383, Battery Clip for above Net .45

28-107, Siren Kit, Wt. I Ib. - Net 5.95 23-006, 6V Lantern Batt. (Normal) Net 1.19 23-541, 6V Lantern Batt. (Heavy duty) Net 2.59 EACH KIT IS COMPLETE - NO EXTRAS TO BUY! EACH INCLUDES A STEP-BY-STEP INSTRUCTIONAL MANUAL PLUS ADDITIONAL IDEAS FOR SCHOOL AND HOME USE!

Detailed Pictorials All Necessary Parts Perf-Board Construction Add -On Ideas 11 KITS TO CHOOSE FROM: 28-102, 2 -Transistor Radio Kit 3.95 28-106, "OTL" Audio Amplifier Kit ... 4.95

28-100, I -Tube DC Radio Kit 3.95 28-I12, Bell/Buzzer/Code Key 1.49 28-IOI, Transistor Organ Kit 5.95 28-I13, Stereo Amplifier Kit 8.95 28-103, Wireless AM Mike Kit 3.95 28-109, FM Wireless Microphone Kit .. 6.95 28-104, AC/DC Power Supply Kit ... 6.95 28-110, 3 -Transistor Kit 7.95 28-105, 3 -Way Code Oscillator Kit ... 3.95 In Stock at Any One of the 200 Radio Shack Stores Coast fo Coast- 10 For Store Addresses, Order Form, See Page 20

www.americanradiohistory.com from RADIO SHACK ScienceNEW

FafrM BATTERY KIT Make 2 "D" Batteries

ONLY

125

Learn the Basics of Electrochemistry

2 Work- All Parts and Accessories for Making Manual ing "D" Cells 8 -Page 'nstruction en- The ideal project kit developed and for- youngsters from 7 dorsed by educators - for making to 16! Contains all material needed Longer -Life "D" Batteries, 2 Radio Shack 50% of plus step-by-step instruction manual, theory and suggested practical experiments. operation, usable Completed batteries are top-quality and needed! wherever Net 1.25 28-125, Ship. wt. 2 I bs. . .

Science Fair i4 50 -IN -1 ELECTRONIC PROJECT KIT

95 50No DiSfoerentlderingProjects SMaafkees- - No AC All Solid State Circuitry 7 15 Solar Energy Projects 62 -Page Illustrated Manual!

Imagiine, Now you can get one of the biggest bargains in electronic kits ever offered - and enjoy the "fun" way to learn the theory of electronics! Build 50 different projects as you learn. Packed (in hardwood' case) with everything you need. Read some of the things you can build: home broadca.ting station, electronic "organ," germanium radio, one- and 2 -transistor radios, morse :ode key, telephone, ra- dio telegraph, transistor amplifier, wireless phonograph am- plifier, oscillator tester, signal tracer, field transistor test- ers, continuity tester, sensitive galvanometer, Wheatstone bridge, A.C. bridge, solar ' telemeter, sound level meter, photometer, water purity indicator, light -powered oscillator, electronic metronome, telephone amplifier. And these are only SOME of the things you can build from this king-sized 50 -in -1 kit! 28-201 Ship. wt. 5 lbs. Net I7.95 For Store Addresses, Order Form, See Page 20 11

www.americanradiohistory.com CB'ers MOBILE -FeEALI-s- TRANSCEIVERS!

--2EALlsr. 12-CHANNEL SOLID STATE CB TRANSCEIVER

With Purchase of TRC-I5 4 SETS OF CRYSTALS Set; Channel II Installed in 3 ADDI- YOUR CHOICE OF TIONAL CHANNELS - FREE! When A Regular $19.92 Value Crystals Purchased Separately

The S100 -quality 2 -way radio for any 12V (neg. ground) 13 Silicon Transistors; 4 Diodes! 12 Crystal - car, truck or boat! 5 full watts of input power; 1 µv sen * * sitivity; solid 100% modulation! Includes built-in ANL; Controlled Channels! * Illuminated Channel Selec- provision for connecting PA speaker. Complete with ser of tor! Adjustable Squelch! Electronic Antenna Ch. 11 crystals, push -to -talk mike with coiled cable, adjust- * * able mounting bracket, DC cable, instructions. Switching! * No Worm -Up Delay! * Die -Cast 21-033, Sh. wt. 5 lbs., 8/4x51/4x23/s" Net 89.95 Panel; Extruded Trim! * Provision for PA! --,,EAtu.i.stic..º 12 CHANNEL CB TRANSCEIVER Single Crystal Operation for Receive and Transmit

-E.austt 9995 rwc-+e su.soN socio stste ce t«ANSCHVetI Solid State Circuitry! Dual Conversion 6.2 MHZ and 455 KHZ for Greater ...... P o ocr Sensitivity & Selectivity! eaUelCM teCNANNile vocuuse Mechanical 455 KHZ Filter! Push -to -talk Dynamic Mike! A truly versatile communications package. Incorporates ad- vehicle. Adjustable squelch control; automatic noise limiter; vanced frequency synthesis technique used on higher priced illuminated channel selector and meter. Sensitivity: 0.5 µv models, the TRC-13 transmits and receives with only one for 10 db S-}-Sz N. With cords, brackets, crystal for channel crystal per channel. Up to 3 -watts output with a full 5 watts 11.711"x60/8"x24". of RF input. Low battery drain in any 12 VDC neg. ground 21-120, Ship. Wt. 8 lbs. Net 99.95 TRC-24 23 -CHANNEL CRYSTAL -CONTROLLED TRANSCEIVER

18 Transistors,4Diodes! Synthesizer Circuitry! ALL CRYSTALS Low Battery Drain! Illuminated 5 Meier SUPPLIED! Antenna Changeover and Channel Selector! Relay! Chrome and Wood Grain Front Panel!

13995 Money Down Obsoletes all 23 -channel crystal -controlled CB transceivers! 0.25 µv sensitivity at 10db S/N! Includes adjustable squelch, auto- matic series gate noise limiter . all wanted features! 12 VDC neg. ground. Plug-in ceramic mike, fusable DC cable, bracket, instructions. ONLY 6"x7''x13/4" 21-124, 5h. wt. 6 lbs. Net 139.95 12 for Store Addresses, Order Form, SeePage 20

www.americanradiohistory.com e;: r+rs1 est

CB WALKIE TALKIE VALUES!

TRC-1B 7 -Transistor Superhet

Low in Cost - High in Quality! Compact and Lightweight! 95 With Push -Pull Audio Output! 100MW - No License Needed! 1 Each Rugged Die -Cast Front Panel!

than RF output power, more audio and greater sensitivity More modulator, 1 mou others in its price class! Push-pull audio output volume control switch, and 45" 10 -section telescopic diode, on/off and carry antenna. Includes set of crystals for Channel 11, battery, strap. 6 x 21/2 x 11/2". Net 13.95 21-IC2, Ship. wt. 2 lbs.

NOW - SAVE UP TO 15% OFF OUR ALREADY LOW, LOW PRICES!

TRC-44B 1 -WATT 3 -CHANNEL Automatic Noise Limiter! Adjustable Squelch! Push -Pun Audio Output! SAVE $5.00 SAS REG. $A,450 usive "lock-sw sock! featu e; separate micro- Beepof 1 Signal diodes and uca,r.stir uouslent transmit; transistors, 3 and speaker! Has 12 batteries, phone With set of Ch. 11 crystals, a thermistor. strap. 9x23/4X2" telescoping antenna, carry Sale 39.50 21-106, Sh. wt. 5 lbs.

1 V2 -WATT 2 -CHANNEL TRC-66 Center -Loaded Telescopic Antenna Increases ! Battery Meter Indicator! Beep Signal! SAVE $10 p REG. «"5.995. S 4995 Each 15 limes the power of 100 MW feature -packed units! This husky unit has 14 transistors, 4 diodes and 1 thermistor, plus ANL modulation. and "DX -boost" for better With crystals, batteries, earphone. 21-1]5. Sh. wt. 5 lbs. _.. Sale 49.95

AUGUST-SS'PTEMSER, 1968 For Store Addresses, Order Form, See Page 20 13

www.americanradiohistory.com 1,000 OHMS/VOLT MULTITESTER 30,000 n/V 26 -RANGE MULTITESTER SPECIAL!

Factory 1695Factory 395Wired Wired Our Regular $5.95 30,000 Ohms/VDC! Convenient Thumb -Set Zero Adjustment! 15,000 Ohms/VAC! Reads AC/DC Volts in 3 Single Knob Selector! Ranges: 0-5, 150, 1000! Easy -fo -Rend Meter!

Only 31/2x 21/8x1"!

Great for home or workshop! Pin jacks for all 5 Makes easy work of the big jobs with precision ranges; 2 -color 13A" meter scale. DC Current 0-150 1% resistors and recessed zero ohm adjust- ma. Resistance: 0-100,000 ohms. Accuracy is ±3% ment! DC volts: 0-0.6/3/15/60/300/600/ of full scale value on DC ranges, ±±4% of full 1200/3000; AC volts: 0-6/30/120/600/1200. scale on AC ranges. A rugged black bakelite case. Resistance: R x 1/100/1000/10,000. Current Comes with pair of color -coded test leads, instruc- (ma): 0-0.03/6/60/600. -2 to +63db in 5 tions, battery. ranges. With leads, instructions, battery. 22-049, 22-4027, Ship. Wt. I lb. Net 3.95 Wt. 2 lbs. Net 16.95

50,000 OHMS/VOLT MULTITESTER __=---AftiL1741107:61 61/2" VTV M METER

95 95

7Factory Factory 2 Wired 3 Wired

4" Full View Meter with Precision Resistors! Mirrored Scale! Measures Peak -to -Peak Meter Protection Circuit! and RMS (7 Ranges on 1% Precision Resistors! Each Function)!

26 -Ranges! Frequency Response: 30 cps to 10 mc!

Only 7x5t/2x55/8"I Easy-to -Read 2 -Color Full View Mirrored Scale! Great for technicians, mechanics and hobbyists. Specs: DC volts: 0-0.5-2.5-10-50-250-500-1000V Features a zero -center scale for alignment of FM - @ 50,000 12/volts. AC volts: 0-2.5-10-50-250- TV detector circuits. Specs: AC volts: RMS 0.1 to 1000V @ 12,500 9/volts. DC current: 0-25ma- 1500 V. (7 ranges); DC volts: 0.1 to 1500 V. (7 2.5ma-250ma-1 amp -10 amps. DC Resistance: 0- ranges). Peak -to -peak 4-4000 V. (7 ranges). Out- 10,000/100,000/1 meg./10 meg-ohms. Center put -20 db to +65 db (7 ranges) . Resistance: scale: 90/900/9000/900,000 ohms. Decibels: -20 0.212 to 1000 meg-ohms (7 ranges). Tubes: 12AU7, Power: 117 VAC, cycles. to (5 Ranges) . 6AC5 and SR1A. 50/60 +62 Net 39.95 22-150, Ship. Wt. 5/h lbs. Net 27.95 22.025, Ship. Wt. 7 lbs. For Store Add , Order Form, See Page 20.

14 RADIO-TV EXPERIMENTER

www.americanradiohistory.com Ai1e) Ik : I ß:[óJ: :id Pt Silicon Field -Effect ;I- . CHER.-A- Replacementp Transistors Transistors PNP TYPES Silicon Epoxy high gain. Re- places: 198 For high frequency, RF -IF, and 2N3548- converter circuits. Replaces: 2N2333.2N2337, 2N252, 2N3550. High Impedance Input( 2N247, 2N248, 276-420, Wt. 3 oz. ,.,. Net 1.09 2N267, 2N274, 2N308 Low Noise! High Gain! 2N309, 2N310. Silicon Epoxy medium gain. Characteristics Similar 276.412; Wt. 3 02. 1.29 Replaces: 2N1132, 2N923 - to Pentode Vacuum For mixer/oscillator converter 2N928, 2N2372, 2N859, circuits. Replaces: 2N112, 2N865. Tube! 2N113 2N114, 2N135, 276-421, Wt. 3 oz. Net .99 2N136, 2N137, 2N140, 1000's of applications where pentode 2N175, etc. tubes are used in low level circuits: field meters, "gate dippers," 276.401, Wt. 3 oz. ....-.,._.,.,..99 strength NPN TYPES receivers, flea power , etc. For universal IF circuits. Re- For mixer/oscillator converter TO -5 case. Includes specifications. places: 2, circuits. Replaces: 2N193, 276464, 5h. wt. 2 oz. Net 1.98 139, 2N2Ì8, 2N219, 2N194/A, 2N211, 2N2-12, 2N315, 2N366, 2N406, 2N233, 2N234, 2N357, etc. 2N358. 3 , .99 Hard 276.402, Wt. oz. 276-408, Wt. 3 oz. 1.09 -to -Find IBM For 6 volt audio circuits. Re- places: 2N77, 2N104, For universal IF amplifier cir- Component Boards cuits. Replaces: 2N98, 2N99, 2N105, 2N107, .2N109, 2N100, 2N145. 2N146, 2N130, 2N131. 2N147, 2N148, 2N149, etc. 276-403, Wt, 3 oz. .99 8 For 276-409, Wt. 3 oz, 1.15

, For 12 volt audio circuits. Re- places: 2N36, 2N37, 2N38, For 9 volt AF amplifier cir- 2N41, 2N43, 2N44, 2N45, cuits. Replaces: 2N35, boo 2N46. etc. 2N169Á, 2N213, 2N214. 276.404, Wt. 3 oz. .99 2N228, 2N306, 2N312, etc. For 9 volt audio circuits Re- 2N313, places: 2N188, 2N189, 276.410, Wt. 3 oz. .99 All quality American made parts. 2N190, 2N191, 2N192, Por 12 volt AF amplifier cir- Each board contains at least two 2N195, 2N196, 2N197, cuits. Replaces: 2N306Á, transistors, plus loads of other com- etc. 2N445Á, 2N446A, 2N447Á, ponents: resistors, capacitors, coils, 276-405, Wt. 3 oz, .99 2N556, 2N557, 2N587, diodes, modules, chokes, and heat For auto radio AF amplifier 2N649, etc. sinks. Size: 25/a x 37/a". 276-617 circuits: Replaces: 2N176, 276.411, Wt. 3 oz. __ ., . .99 8 for 1.00 2N178, 2N179, 2N234, 2N35B' 2N236, Silicon Epoxy high gain. Re- 2N235, places: 2N3704.2N 37 0t), 2N242, etc. 2N3415 2N387'. NEW! Twin -Pak 276-406, Wt. 3 oz...... 1.19 -2N3417, 276-422, Wt. 3 ox. ._ Net 1.09 For high power AP circuits in Transistor Kit auto radios. Replaces: 2N173, Silicon Epoxy Medium gain. 2N174, _ 2N277, 2N278, Replaces: 2N706TPP, 2N441, 2N442, 2N443, 2N3663, 2N3843A, 2N3900, 2N1515, etc. 2N3901, etc. Pak 276-407, Wt. 3 oz. _.ï...... , 2.29 276-423, Wt, 3 oz.....-... Net .99 198 of 50 i4 25 NPN 25 PNP Integrated Circuit Silicon & Planars Included Specials! A sensational value! Full-length leads; ideal for RF applications, switching and general-purpose audio use. Silicon and planar types in- Ideal for the Hobbyist, cluded to provide replacements for many popular numbers without cir- 98 Builder, Experimenter! cuit change. Think of it- less than -if per transistor! 276-1516, Wt. 2 1.98 1 UP Fsintastic Savings! lbs. Net 100 -Pc. Jumbo Pak New from Radio Shack! Resistor -Transistor Logic type .ICs are ideal for builders, hobbyists, labs, industry etc. Guaranteed to be 100% perfect electronically and Assorted Transistors mechanically. Each comes complete with diagram and lead locations. Power re- quirements: 3 volts. Flat Pak type, Size 4 x 5/16 x 1/16". 398 DUAL 3 INPUT GATE. Can be used as a 6 input microphone mixer. Contains up to 6 transistors & 8 resistors in pak. Elements can be used parallel to increase current capabilities. 276-430, Wt. 3 oz, 4 Net 1.98 Includes Germanium & Silicon DUAL JK FLIP-FLOP. Construct your own binary computers, digital adding machines etc. Contains up to 25 transistors and 32 resistors per pak. PNP and NPN's in assorted cases, 276.431, Wt. 3 oz. Net 2.49 TO -I, TO -5, TO-3, TO -22, etc. Ideal for RP, IF, OSC., audio and power. 276-544, 5h. wt. I lb. Net 3.98 For Store Addresses, Order Form, See Page 20

AUGUST -SEPTEMBER, 1968 15

www.americanradiohistory.com -ARCHER-- PHOTO -ELECTRIC RELAY SYSTEM Ready to Operate-Not a Kit! Complete with Exciter Lamp and Photo -Cell Receiver! Effective Range: up to 50 Feet! Each Unit Is Separately Powered!

ONLY 1995

The ideal multi -purpose photo -relay for business, retail store, home or warehouse use! System consists of an exciter lamp and photo -cell re- ceiver, each housed in a rugged metal case. Both plug into standard 117 VAC house current. The system can be used (with bell or buzzer) to signal when someone enters a room and" "breaks" the beam; to count people or objects; or to trig- ger an alarm to deter intruders. A variable sensitivity control adjusts for ambient light level, or can be used to inactivate the system tem- porarily. Each unir 5 V2x4x2 e". 275-489, Sh. wt. 6 lbs. Net 19.95

D Cell 23' RADIO SHACK "EXTRA -LIFE" BATTERIES 50% Longer Life! Higher Lumen Output! Higher MNO Content! Steel Encased with Anti -Corrosive Caps! cen Radio Shack's new 50% Extra Life cells yield fresher, longer life without sacrificing "shelf life" or adding weight. Ideal for radios, recorders, flashlights, etc. Designed to exceed U.S. Government standards! Buy 'em by the box - save more! ill Interchangeable with Cat. RADIO Eve- Bur- Per Fig. No. SHACK ready gess RCA Pack Box I.SV A 23-1538 "D" Cell 950 2 VS036 4/.98 24/5.59 I.SV B 23-478 "AA" Cell 915 Z VS034A 4/.69 72/9.95 I.SV C 23-153 "C" Cell 935 VS035A 4/.88 24/4.49 D 23-152 9V Rect. 216 2U6 VS323 2/.98 50/19.95 AMAZING HOME BATTERY CHARGER Don't Discard Your "Dead" Batteries! Accepts All These Types:

1 1/2V "AA" Cells "D" and "C" Cells 9V Transistor Radio Batteries Count the number of batteries you use around the house right now - then count how much you'd save by recharging them over and over again. End replacement costs! Get the handy battery charger that plugs into any 117 VAC house outlet and recharges batteries overnight! Accepts up to 4 batteries at a time. Cannot overcharge or burn out. Start saving money today! 270.1526, Sh. wt. 13/ lbs. Net 4.95

16 For Store Addresses, Order Form, See Page 20 RADIO-TV EXPERIMENTER

www.americanradiohistory.com RADIO SHACK

ANY ARCHER-PAK "1 ON 94040 STOKE PER THIS PAK PAGE

20 Power Resistors 35 Precision 1% Resistors 50 Tubular Capacitors

rPackage consists of high - Large assortment of pop- An assortment of quality quality vitreous, cand-ohm ular /2, 1 and 2 -watt tubular capacitors, 100 and wire -wound types. In- values; includes encapsu- mmf to .1 mf to 600 cludes 5 to 25 -watt lated, bobbin, carbon WVDC. Includes molded, power resistors; individual film, etc. Made by Aero- paper and porcelain catalog net -4110! vox, Shellcross, IRC, and types. $10 if purchased 271-1202, 2 lbs. Net 1.00 other famous names. ,individually from catalog!

271.1196, I Ib.._ .. Net 1.00 272-1568, I Ib. Net 1.00

4 Subminiature 455KC 8 Sets -RCA Plugs & Jacks 40 Micro Resistors IF Transformers World's smallest 1/4 -watt Quality items, ideal for carbon type resistors! An use in phono amplifiers, have axial leads; built for Slug tuned, made for tuners, recorders, etc. transistor and subminia- printed circuitry mtg., Take advantage of this ture circuitry: Assorted shielded. Size: /a x 34í2 Radio Shack Special low values, with resistor color x1" price! code chart. 1.00 273.515, 1/4 I b..... Net 1.00 274-1575, /2 Ib. Net 271-1574, 1/2 Ib.....Net 1.00

40 Coils and Chokes 50 Mica Capacitors 8 Volume Controls Famous name micas Most Popular Values Shop assortment consist- Aerovox, Sangamo, C.D.,- ing of RF, OSC, IF, para etc. This assortment in Contains 8 assorted values sitic, peaking and many eludes popular values 100 including long and short more types. Individually mmf to .01 mf, as well shaft types. A tremen- purchased, this would cost as silver type condensers. dous bargain for service- you $15! A $10 catalog net value! men! I Net 1.00 273-1569, Ib. 271-127, I lb. Net 1.00 272-1573, I lb.i.._. Net 1.00 Special! 50 Capacitors 60 Half -Watt Resistors 50 Ceramic Capacitors Assortment of many types Made by Allen Bradley Wide variety of popular including disc, ceramic, and IRC. Many 5% and values by Centralab and mylar, temperature coeffi- 10% tolerance. Color other famous -name mak- cient, molded, paper, oil, chart. All most popular ers. 10 mtnf to .04 mf to Vit -Q. You save $9 over values. An absolute KV. Assortment includes industrial net catalog "must" for hobbyists and tubulars, discs, NPO's, prices! kit -builders. temp. coefficient, etc.

1.00 271-1612, I 1.00 I Net 1.00 272-1199, I Ib..---. Net Ib. Net 272.1566, lb.

_ 40 Terminal Strips 40 Disc Type Capacitors 150' of Hook -Up Wire You get a wide variety of varied screw and solder lug type A assortment of Assortment consists of 6 types, including NPO's, V rolls of 25' each terminal strips with 1 to Hi -Q, N -750's, mylar - 6 lugs. Outstanding value and solid and stranded wire. ceramic. 10 mmfy to .01 # 18 through #22. Nec- at this low price! 101 mf to 6 KV. A uses for the builder and $10 cat- essary for multitude of alog net value! jobs and always useful! experimenter. 1.00 1.00 272.1567, 1/4 Ib. Nat 278-025, lb. Net 1.00 274.1555, I lb. Net '/2 40 One -Watt Resistors 4 Transistor Transformers SURPRISE Here are resistors fcr hundreds of uses! Assort- Made by UTC and Rem- PACKAGE! ment has Allen Bradley ington Rand. Famous min- $25 and IRC carbons, with iatures. Includes sub- 5% values included. This ouncer, mike, input types. leads. Loaded with { pack is a regular $8.00 Color coded 1.00 $ catalog net! 273-1581, I Ib. 'Net Parts! 271-1576, I lb. Net 1.00 The biggest surprise package yet! Enough 50 Plugs and Sockets 30 2 -Watt Resistors electronics compo- Ideal bench assortment nents to make your for servicemen, hams, etc. These quality 2 -watt re- eyes pop! Resistors, Subminiature and printed sistors are non -inductive, capacitors, condensers, circuit types included! magnetic film, carbon diodes ... your guess This assortment saves you types. Many with 5S'r is as good as ours. The $10 over individual cat- values. Made by famous - famous -make parts are alog prices! name manufacturers. worth at least $25.00! 270-1251, I lb., Net 1.00 274.1562, I lb. Net 1,00 271-1211. Va Ib. ... Net t,00 For Store Addresses,. Order Form, See Page 20 AUGUST-SEPTEMBER, 1968 17 www.americanradiohistory.com RADIO SHACK EXCLUSIVE! ADD A

TO YOUR SLAVE "WALKIE" OR WA KIEpTALKIES! I`E

Actual Crystal -controlled superhet Size! receiver ONLY! Add as many ears to your network as you want. Fits in a shirt pocket - an excellent paging or guided tour device!

This unusual Radio Shack product, called the Realistic Microsonic 27MC Receiver, comes complete with a Ch. 11 CB crystal - and because it's a plug-in, it can be changed to any of the 23 channels. It's a teeny 31/2 x 21/2 x 13/g". It includes an earphone with clip, and the phone's lead acts as the antenna. So if you want to hide it away as a pager, there's nothing showing. For DX we've included a 16" telescopic whip to be used only if necessary. Let your imagination run wild with this novel device! 21-109 Microsonic 27MC Receiver Only 7.95 NEW IDEA #2 - as a companion to the above, or a wire- less CB microphone (!), there's also the Realistic Micro - sonic CB transmitter. Same size, color, everything. But transmit only, 100mw of course, with plug-in crystal for Ch. 11. Uses? For example: one of these plus x -number of receivers and you have a guided tour technique that'll never quit! 21-I10 Microsonic CB Transmitter Only 7.95

FREE ACCESSORIES: Receiver - earphone and whip antenna Transmitter - 35" telescopic antenna Note: both units include crystals but require a 9V transistor battery to operate. 23-464, 29e each.

100 MW TRANSMITTER AND REMOTE CONTROL 399 Perfect as a CW Trans- mitter ór Wireless Mike!

Loads into almost any antenna; 100 milliwatt out- Range to 1/4 mile, uses plug-in crystal (not sup - put, plays into any CB set. Use as low -power CB plied). Get yours now at Radio Shack's low price! transmito:r, band marker or signal generator. 21-1166, Sh. wt. l/2 lb. Net 3.99 MINIATURE 6V SYNCHROS For All Remote Control Applications Ideal for: Amateur & CB Beam Antennas 44 Weathervanes and Other Indicating Uses 4 Pair Used in aircraft equipment. Compact, ruggedlygge y built. Operate on 26 VAC @ 400 cycles. Guaranteed to operate efficiently at 6 VAC (a? 60 cycles. With wiring diagram. Size 1.5/8 x 1Ss": shaft Vs x 1/2". 273.2006, Ship. wt. 1 lb. Pair 4.44 273-050, 6.3 VAC Transformers Net 1.19

1B RADIO-TV EXPERIMENTER

www.americanradiohistory.com Standard Desk Telephone

Reedy io Install $95

Enjoy the extra convenience of an extra phone! Our most popular style; it's modern, low-cost, and easy to install. Each phone is factory reconditioned to give trouble -free service. Bakelite body and handset; metal base. Dial, bell and coil included. (Note: use of telephone Phone equipment not installed by a telephone For Private company may be subject to local tariff.) and Intercom Systems. 279.371, Sh. wt. 10 lbs. Net 8.95 Carbon Type Handset 30 Ft. Telephone Cord For Mobile and Extension Replacement Use! your phone from room to room! with mobiles & intercoms, Move flexible cord Great for use Highest -quality 4 -conductor or as outdoor mike for camps and con- plus standard telephone jack and plug. Withstands extreme tem- more for struction sites. Ideal foi intercom. Use 2 or peratures. High output mike can be used extra length. Adapt to your CB Net 2.98 with low gain circuits. 279.1261, Sh. wt. 114 lbs. transceiver or radio. Includes earpiece and 3 -conductor cord. Net 2.99 Telephone 279.1351, Sh. wt. I lb. Plugs & Jacks e Sound -Powered Ideal for making extensions, these plugs and jacks each weigh approximately tV4 Elements pound. electricity 1.25 Kit of two! Talk without - 279.366, plug Net these devices. Hook Net 1.40 your voice powers 279-367, lack them up, and talk up to 300 feet. Ship- ping weight: %: pound. Coiled Phone Cords 279-1353 Net .99 Stretches no to six feet. 3 -conductor. Shipping weight: 3a pound. 100 Ft. 3 -Conductor 278-361 Net 1.19 Telephone Wire Four conductor extends up to fifteen feet. Shipping weight: 1 pound. -use 100' 3- cond;gitor wire for 'Netet 5.95 Multi telephone work. -Ideal for linking temporary phones for field uses. 278-370, Sh. wt. 2 lbs. Net 3.49 Shoulder Rest Frees both hands! Spring mechanism Handset Hanger enables arm to be folded out of sight to attach to any Hang up your phone without totting off when not in use. Easy tele- phone. Long lasting metal construction. party on other end. Ideal for wall in the . phones. Anodized black aluminum. Manufactured Net 1.25 1 pound. 279-1528, 5h. wt. 1/4 lb. Weight: 1.49 279-606 Net Dials Wall Jack Telephone Telephone Standard Electric unit. Can be used with automatic control circuits, & For 2, 3, 4 -wire systems. Fits standard electronic combination lock circuits. wall conduit boxes. 1 lb. 279-359, Sh. wt. VA lbs...... Net 2.99 279-1507 Net 1.99 Store Addresses, Order Form, See Page 20 19 s AUGUST -SEPTEMBER, 1968

www.americanradiohistory.com ORDER BY MAIL FROM YOUR NEAREST RADIO SHACK STORE PHOENIX 3905 East Thomas Rd., NEW 273 -1722 OVERLAND 96 North Avalon, PARK Ranch Mart So. ALBUQUERQUE: 272.7589 (Leawood), Eastgate 649-2122 6315 Shopping Cfr., 683.3985 LITTLE Lomas Blvd., N.E., 268-5722 Frayser ROCK University Plaza, 562.32 02 WICHITA Parklaue Shopping Center, Plaza Shop. Ctr., 358-4315 4th and Copper N.W., 247-3828 685-2211 1825 South 3rd St., 947-2371 NASHVILLE NEW 100 Oaks Shop. Ctr.,.297-3662 ANAHEIM 507 East YORK Katelle Ave., 776 9540 ALBANY BAKERSFIELD BOWLING Colonie Shop. Ct., Colonie, TEXAS Valley Square Shopping GREEN Bowling Green Mall, 459.9208 Ctr., 2734 Ming Ave., 832-5080 842-6564 ABILENE 2910 North First St., '673 BINGHAMTON Vestal -8169 - COVINA 1065 West NEWPORT Newport Shopping Plaza, AMARILLO Western Badillo, 966-1661 Plaza, 70 Carol hers 729-1525 Plaza Shop. Ctr., DOWNEY Stonewood Rd., 441-4361 355.2822 Shopping Center, BUFFALO: 923.1709 Collins at Park Row,l277-3151 725 Main Street, 852-6364 GARDEN GROVE 9836 Garden AUSTIN Hancock'Sh000inv.Center,4543090 Grove GRETNA Transitown Ctr. Blvd., 537-1450 Oakwood Shop. Ctr., 362-7 (Williamsville) 632-7111 BROWNSVILLE 989 NEW YORK: 847 S.E. Elizabeth St., GLENDALE MONROE 1818 Tower Dr. Plaza.1323.7 Broadway & Chevy Chase Dr 546-6156 3112 Paris 1128 Ave of the Americas, 687.4482 241.5106 Ave., 282 4682 CORPUS CHRISTI 520 Everhart SHREVEPORT 384 Fifth Ave., 244-0444 Rd., LA HABRA 1511 West 1297 Shreve City,'865- 854-2661 Whittier Blvd 9661 ROCHESTER Ridgemont 597-6707 Plaza (), : 865.0690 LONG BEACH 4686 long Beach Medallion Center, Blvd. BANGOR SCHENECTADY Shoporama 363-6236 423-5444 20-24 Broad St., 945-9494 Ctr., Ratter. 125 Wynnewood PORTLAND dam,355.9740 Village, 948-3201 LOS ANGELES: Pine Tree Shop. Ctr.,j773 -7071 SYRACSE: 138 Marsh Lane Plaza, 357-7419 830 W. Olympic Blvd., 747-0271 156 Inwood Village, MARYLAND 3057 Erie Blvd. East, 446-4990 358-3892 Ladera Shop. Ct. 5305 Centinela Ave. 507 Casa Linda Plaza, , BALTIMORE Perring Pky. Shop. Fairmount Fair Ctr., 328.2522 b76-5268 Ctr, 3675 W. Genesee 1424 661-3520 St., 468.0211 So. Buckner Blvd., 391-5578 Mission Hills 10125 No. EL PASO 85 Bassett Sepulved a LANGLEY PARK Hampshire -Langley Center, 778-7965 Blvd., 892-3118 FORT WORTH: Shop. Ctr., 439-6688 NORTH CAROLINA Reseda Leonards 19389 Victory at Tampa , ROCKVILLE CHARLOTTE 1010 Department 1600 Rockville Pike,427- 1323 Central Ave., 375-3198 Store, 881.3142 200 St., 336-9111 West L A. 10650 W. Pico Blvd. at OHIO 3524 Denton Highway, 831.1951 Overland, 870-4752 : 740 Swifton Ctr., 631-0570 2615 West 7th St., 336.4684 MOUNTAIN CLEVELAND: VIEW San Antonio Shop. 167 St., 523-4719 6303 Camp Bowie Blvd., 737-0812 Southgate Ctr.' 941-2320 54 Washinton St.,31 Ctr. (Maple Hts.) Village 138 Seminary South, 927-782g NO. BRAINTREE Shops, 475-8150 HOUSTON: Laurel Plaza Shop. Ctr. South Shore426-34Plaza, 843-92 00 OAKLAND BROCKTON Richmond (San Leandro) Bay Fair Shop. Westgate Mall, 588.5327 Mall (Rich Hts.), 442-2955 7949 Katy Freeway, 682-5694 Ctr., BROOKLINE Parmatown 278-5200 730 Commonwealth Ave., Shop. Ctr., 884-5127 8458 Gulf Freeway, 643-4731 PASADENA 1715 East Blvd., 734-1000 COLUMBUS. 4290 No. High St., 267-9271 322 Northline Mall, 697-7914 LIMA 449.4527 CAMBRIDGE Fresh Pond Shopping Lima Mall, 331-5085 Bellaire 4759 Bissonet, 667.5190 POMONA 1335 Center, WILLOWICK 9417 Holt Ave., 629.5027 178 Alewife Brook Pkwy., Shoregate Shopping Ctr Jensen Rd., 694-4266 SACRAMENTO 491-2925 944-6640 1407 600 Fulton Ave., 483-2707 Spencer Hgy. (So. Houston), SAN BRUNO 481 Y8 DEOHAM 994-5575 El Camino Real, 588-62 Dedham Mall, 300 VFW Pkwy., SAN OKLAHOMA IRVING DIEGO Grossmont Shopping Center 329-1587 Plymouth Park Shop. Cfr.,253.6811 5500 Center DORCHESTER OKLAHOMA CITY: LUBBOCK Dr., La Mesa, 456.4062 2 3 B-10 Caprock Shop. Ctr., F Mayfair Shop. Ctr., 943-8491 305 Mission Valley Ctr., W. San AM NGHAM Shopperside s'' Word, 872-6569 799-1323 LEOMINSTER Hillcrest Shop. Ctr., Diego, 298.6688 Whiteacre Shop. Ctr. 6815591 MIDLAND South "9" Meta Drive, LOWELL TULSA 2730 South Harvard, College Grove Shop. Ctr., 583-3211 Central Shop. Plaza 455-5469 742.2255 682-7001 MEDFORD SAN ANTONIO: 36 Geary Street, 986.100 278 Mystic Ave. (Duellrr Div.), SANTA ANA: 395-6700 150 Wonderland PORTLAND 1928 N.E. Shop. Ctr., 735-9161 NATICK 136 42nd St., 281-4842 684 Bristol Plaza Shop. Ctr., 546-5700 Worcester Rd. (Darrellrr Div.), S.W. Military Drive, 924.4851 2713 South Main St., 5450405 655.1850 7107/ San Pedro Ave., 341-3391 QUINCY 221 SHERMAN SANTA MONICA 732 Santa Monica Blvd., Quincy Ave. (Dur re l) GREENSBURG Greengate Mall, 8370370 1620 Highway 75 North, 892-6553 394-3791 471-3318 : TYLER 108 Troup Hgwy., 593-5392 TORRANCE SAUGUS: WACO 4300 22519 Hawthorne Blvd., 2327G Coltman Ave., Roosevelt Mall, West Waco Dr., 752-7739 373-1984 N. E. Shop. Ctr., 233-5350 338-4711 WEST COVINA 704 2516 East Workman Ave., 2 641 1128 Walnut St., 923.2198 SALT SPRINGFIELDWSpringfield LAKE CITY Cottonwood Mall, 3391227 Plazell a, 7 3492189 : 271.3064t WALTHAM 922 Main 309 So. VIRGINIA St. IDurrel I Hills Village Ctr., 343.5800 COLORADO 893-7020 ARLINGTON East Hills Shop. Ctr., 243-8200 Parkington Shop. Ctr.,1524.5422 DENVER: WEST SPRINGFIELD HAMPTON Century Shp. Ctr,; PLYMOUTH MEETING Plymouth Meeting Mercury Plaza Mall, 838.5200 798 South Santa Fe Dr., 233 733.7833 Memorial Ave, 732-4433 Mall, 825.0699 NORFOLK 4016 Granby St., 622-9080 Westland Shopping Center, 238-6323 WORCESTER PORTSMOUTH Lincoln Plaza. 757-90309 RHODE 3109 South St., 399-2115 ISLAND VIRGINIA BEACH Pembroke MOUTON PROVIDENCE Mall Shop. NorthradoValleylvd Shop756-1678 Ctr., 288.834 6, MICHIGAN 355 Reservoir Ave., 4673390 Ctr., 497.9211 : EAST PROVIDENCE Shoppers' Town, Macomb Mall (Roseville( 434-5672 WASHINGTON BRIDGEPORT Lafayette 29 4- 5650 : Plaza Lincoln Ctr. (Oak WARWICK 296 NAMDEN Park), 398.0686 Midland Mall, 828-4141 Hamden Mart Shopping Sears Shop. 116 SW 148th St., 242-3637 Ctr., (Lincoln Park),W Center, 2300 Dixwell Ave. 288.7911 388.1120 2028 Third Ave., 682-5280 MANCHESTER Manchester Shopping GRAND RAPIDS Woodland MEMPHIS: 837 N. E. 110th St., 364-8670 Parkede, Mall 649-5247 1208 Southland Mall. Whitehaven, WEST NEW BRITAIN Newbrite Plaza, 225.8787 396-7762 VIRGINIA DULUTH MARTINSBURG NEW HAVEN 230 Crown St., 787-7121 29-31 E. Superior St., 722-55512 Charles Town Rd., 2639995 NOW MINNEAPOLIS: LONDON New London Shop. Ctr., 442-0522 1121 Nicolet Ave., 339-8229 RADIO SHACK' Dirition of Tandy Corporation ORANGE Whiteacre 140 Apache Plaza, 788-4911 Shop. Ctr., 795-9731 For CATALOG D Hub ONLY -mall to Radio Shack, 2727 27 W. 7111 St. Dept. TTORRRINGTON ST. PAUL 47p1 Nong Ft. Worth, Texas TorriHigngiongParkad325-43712 7 Snelling Ave 64 5.2063 76107 WEST HARTFORD For ORDER plus CATALOG XV 39 So. Main St.,236.5441 -mail to Radio Shack store nearest you. JACKSON 3017 CAT. NO. I No. State St., 36 8226 QTY. DESCRIPTION COCOA 6 PRICE EACH BEACH 585 No. Atlantic Ave., 783.9545 JACKSONVILLE KANSAS CITY: NEW 1968 Regency Square Shop. CATALOG FREE Clr., 725-7477 1234 Grand Ave., 421-1030 Antioch ORLANDO Winter Park Mall, Winter Park, ST. JOSEPHS 647.8646 505 No, Belt Hgy.,240233 -2423 ST. LOUIS: WEST PALM BEACH Palm Beach Mall, 1125 Pine 683-1502 St. (Walter Ashe Dv.),i 241-1125 South GEORGIA County Shopping Center,' 8 92.1800 ATLANTA: Northland Shopping Center, 381-5190I- 917 Peachtree 10483 St., 8743069 St. Charles Rock Rd., St.Ann, Greenbrier Shop. Ctr., 349-0751 423-1700 No. DeKalb Shop. Ctr., Decatur, 638.8002 OMAHA Min. order, 192.50. O ders up 3002 Dodge St., 346-2433 to 90.00, add SOW; over $5.00: add 75e to cover cost BELLEVILLE Bellevue Plaza Shop. Ctr, of handling and postage in 2354050 NEVADA U.S. CHICAGO LAS VEGAS 953 Add STATE TAX where Evergreen Plaza at 95th St, East Sahara, 734-28358 Applicable: 636-9796 Add to My Account ELGIN 528 Dundee Ave., 695-5361 50` COMPUTER' FREE MANCHESTER 1247 Elm Check Enclosed. HARVEY Dixie Square Shop. Mr., 339-3860 St., 669-13033 WAUKEGAN Belvedere Mall, 336.3151 NAME TOTAL FORDS 588 New Bruswick Ave., 442-5959 STREET PENNSAUKEN Rt. RICHMOND 735 Richmond Square 130 and Browning Rd., Shop. 665-0260 Ctr 9664578 CITY STATE TRENTON ZIP 1461 Hamilton Ave., 586.1086 A 4 20 RADIO-TV EXPERIMENTER

www.americanradiohistory.com how often could You Haue used...

POSITIVE FEEDBACK llIillliII111I1111111liiilIIIlIIIIIJ JULIAN M. SIENKIEWICZ, EDITOR

got Man, oh, man-talk about winners, we've one in the new 1968 CB BUYER'§' GUIDE, now on your newsstand. It's our third edition and our best. Yep, the Editors of RADIO-TV EXPERIMENTER had a finget in the preparation of this fine CB annual, and we'd like all our readers to thumb through a copy at their favor- ite newsstand. Why not! We're sure you'll de- part with the mag in your clutches-after you have paid for it! To make this CB mag really great, we started with the cover and went wild from there on in. For example, take a look at pretty Pamela put- ting out plenty of flower power with an E. F. power pack. Johnson 323 CB rig and portable Handy as an (The bikini isn't much to look at, but that's the way it should be!) extra hand or helper. You may see Pamela on the beach this sum- Clamp* lightly or tightly ... you do, take a snapshot mer with her CB rig. If or minutes. me. Be sure to identify the J for moments of her and send it to Y'7 CB gear in the photo and identify the lass if she holding A remarkably versatile :oel with unusual qualities. Clamps tightly holds wires for soldering, from hard - acts as a heat sink, retrieves small parts Box joint to reach places. Two -position ;nap -lock. construction. Precision reach ned from perfectly tempe -ed stainless stee . 42H straight 4 MODELS: 6" (serrates laws/ Nos. jaws) and 43H curved nose; 1' Jr. (smooth, slim Nos. 32H straight and 33H clrved nose.

Park, N. Y. 14127 XCELITE, INC., 64 Bank Stt, Orchard Send Bulletin N564 on Seizcrse.

name

address 1968 state 8 zip This is she-Pamela, the cover girl on the city Pam CB BUYERS' GUIDE. If you want fo see in t Ltd. In Canada contact Charles W. Pointon, full color, get o copy today! 21 AUGUST -SEPTEMBER, 1968

www.americanradiohistory.com POSITIVE FEEDBACK iiiimmilimminiumeinummuminummummilimumminimmiumiummumnimumnimmuummiiiiimillimmilimm

happens to look like your favorite playmate. Mrs. to upstate Do this New York. The Charger handled and we may publish your snap this great on the road-power winter when the frost steering was at its is on the pumpkin. In best. I chewed up the roads, risking fact, we may even send you speeding a little something tickets in the interest of sound reporting. or other in the event we publish My the photo. mileage was about 14 miles per gallon, Please-we cannot return photos, but then so send us an I was not looking for any mpg awards. extra copy only. And while you're waiting for Oh yes, there was something wrong with the the snap to be published, spend the days read- accelerator-every ing time I floored it the car the 1968 CB BUYERS' GUIDE-or looking at leaped to Pam. 95 mph and the wife screamed (I understand Dodge will not fix this defect). Coming home on Sunday I decided to stay with- t Got The Fever. Editors like to talk to editors in legal limits and let the radar traps go hun- from other magazines, and last Friday found gry. Most of my mileage was at 50 mph with a me Chatting with Joe Gutts of SCIENCE & ME- short stretch at a legal 60-result, 20.34 miles CHANICS magazine. Joe's their Auto Editor and a per gallon. monster Joe Gutts doesn't believe me, but of a man, so when he started to criticize I'll swear to it. my magazine, I listened. Joe complained about The Dodge Charger with its Hemi engine our Lab Checks. In his own words, is "All youse just great for young at heart and for couples guys report on is electronic junk filled with who like to wires. travel on weekends. The racing What gives with the nice things in life- stripe wrapped around like wheels, the trunk is the greatest man!" and so is the plush Well, interior. But all good things Joe had more than a point on his head come to an this end, and I returned the Charger time. We're all consumers and we're all in- to Joe Gutts. terested in consumer products. Therefore, I'm Next Fall. Gravity is the most taken -for - granted force on earth. The youngest child soon learns that if he trips, he will fall, and he eventually begins to take precautions. As the child grows up he eventually learns that all material objects fall toward each other simply because they are material. Scientists have been explaining why things Man, we were lucky fo get this Dodge Charger fall for a long time. Isaac Newton gave one to stand still for the photo. Racing stripe around explanation that satisfied thinkers for more trunk and rear fenders gives it a gift-wrapped look. than 200 years. Difficulties with some of New- ton's predictions led Albert Einstein to formu- late a new going to mäke it a practice theory in 1916. One of the unexpected to report on non- things about electronic consumer products this new theory-as Einstein in, this column pointed out-was that that I have a chance to test. Whenever it predicted that bodies a non- could exchange energy with each electronic item comes along that I think you'd other by means of gravitational waves in a like to hear about, you'll find news of it manner similar to here- electromagnetic waves such as light as long as I can use the item long enough and radio. to become acquainted But nobody has yet seen a gravitational wave. with it and make some And meaningful comments. it has only been a short while that anyone has been To get the ball steadily looking. Most physicists be- rolling, I would like to report lieved on the 1968 Dodge that gravity waves could not be detected, Hemi-Charger Joe Gutts and loaned me so far only two small groups have been for the weekend. Joe mentioned willing something about to expend the effort to hunt for them. a 425 -horsepower engine, but Such I figured he waves are extremely difficult to find be- was giving me the mileage (no cause gravitational car has that much power!) forces are very weak. Gravity So off, I go with /maintains the stars and planets this 4 -speed, stick -shift, bright-red in their courses, thunderstick but the large forces involved result through streets. I had trouble from the with huge masses of the bodies concerned. Given the shift only because I am shiftless in comparable my habits-I kept charges, gravitational forces are a the Charger in second all the hundred billion way home. Believe billion billion billion times it or not, the tach never weaker than electromagnetic entered the red zone even when forces. I was doing Only in the last eight years have 60. (New York City cops do not read!) a few physi- cists been willing to develop the fantastically Onoe home I practiced shifting for 15 minutes precise technology required for even a hope and was able to drag with the best. It all of detecting gravitational waves. The first to begin comes back quickly if you learned to drive on a was a,group led by Prof. Joseph Weber of the shift car. Now, off to a weekend of fun with the (Continued on page 111) 22 RADIO-TV EXPERIMENTÉR

www.americanradiohistory.com Here's a new, complete ICS course in TV Servicing that costs less than $100. With the first two texts, you can repair 70 percent of all TV troubles. you get the this com- you take a final examination. Then You need no previous experience to take the ICS coveted ICS® diploma, plus membership in plete, practical course in TV Repairing. tube from TV Repairman Association. You don't even have to know a vacuum you should be By the time you've finished the course, resistor. Yet in a matter of months, you can a able to handle tough, multiple TV problems, on on color sets! be doing troubleshooting well as black and white. to bring you along quickly color sets as Course consists of 6 texts and Repair Course has been easy -to -follow in- This new TV Servicing and easily. 936 pages of concise, Associations for You also approved by National Electronic struction, plus 329 detailed illustrations. Because Uf its directly to use in their Apprenticeship program. a dictionary of TV terms geared of receive completeness, practicality and price, it is the talk material so you'll understand even the most course the industry. The cost is less than $100-just slightly technical terms. on the over 1/2 the price of any comparable course is simple, very easy to grasp. Photos Instruction market today. what a TV screen looks like when everything show you Remember, the sooner you get started on your and what it looks like when trouble fouls is normal, course, the sooner you'll be turning your spare time The texts tell you how to remedy the problem, it up. into real money. Fill out the coupon and mail today. and why that remedy is best. at no obli- so you We'll rush you '\ complete information Quizzes are spotted throughout the texts the course, gation to you. can check your progress. At the end of

23 AUGUST -SEPTEMBER, 1968

www.americanradiohistory.com BY BOOKWORM

ti;,7ns-es25- E5

GD Wanna be a Ham? There's no doubt that the new FCC/ARRL incentive licensing will mean many changes in the hobby of amateur e radio. What these changes are is discussed in I the new fourth edition of So You Fill in coupon for a FREE One Year Subscrip- Want to Be tion to OLSON ELECTRONICS' Fantastic Value a Ham, by Robert Hertzberg, W2DJJ. Every- Packed Catalog-Unheard of LOW, LOW PRICES thing the would-be radio amateur needs on Brand Name Speakers, Changers, Tubes, or Tools, Stereo Amps, Tuners, CB, and other Val- wants to know about the hobby of amateur ues. Credit plan available. radio is contained in this old favorite. It's a must for those going for their ham ticket.

GIVE ZIP CODE mo yus r If you have a friend interested in electronics send Ylti]t. cts isc is his name and address for a FREE subscription also. Per

922 S. Forge Street Akron, Ohio 44308

Soft cover 192 pages $3.95 Chapters are devoted to the code, kits, the receiver, getting the ticket, going on the air, ERSIN the antenna, going mobile, how to be a good operator, test equipment and safety measures, the organization of amateur radio, electronics as a career, the ham in military service, and the MULTILORE radio market place. The book contains profuse illustrations and descriptions of modern equipment to aid the 5 -CORE reader in making a selection. It also describes operating procedures, and gives helpful guid- ance on passing the FCC exam. SOLDE Copies of So You Want to Be a Ham are available from electronics parts distributors and bookstores throughout the country, or di- rect from the publisher Howard W. Sams & Co., Inc., 4300 West 62nd Street, Indianapolis, Indiana 46268.

GD Switch Craft! The simple, but talented switch-the Silicon Controlled Rectifier-has Only 69C quickly assumed a top position among highpower devices employed for rectifying, BUY IT AT RADIO-TV switching, and regulation. Heavy industry, PARTS STORES transportation, construction, aerospace, com- munication-these are areas where the SCR is now used, and will be used in constantly MÚLTICORE SALES CORP., in- WESTBURY.. N.Y. 115? creasing number. It is essential that today's 24 RADIO-TV EXPERIMENTER

www.americanradiohistory.com nnAllDER UNUSUAL OR SHOPPINGSHOPPINGMARTART VALUES Experimenter A selection of products available by mail for readers of Radio-TV by Stock No. Send check or M.O. All merchandise sold on a money -back guarantee. Order Direct

iteätitiav- WITH A MAGNET WORKING MODEL DIGITAL COMPUTER 23 ELECTRONIC PROJECTS in 1 KIT fiSH' Now easily build 23 fascinating electronic hunting on the bottom. Fas- Solve problems, teach logic, play games with transistor Go treasure brains! projects that really work including fun & sometimes profitable! Tie a miniature version of giant electronic r .trotc cinating radioreceivers,alarm, our 6-Ib. Magnet-drop it overboard Adds, subtracts, multiplies, shifts, comple- burglar flashing beacon lice to carries. memorizes. Colored plastic organ,nicComplete, foolproof templatetobe fdr in bay, river, lake or ocean. Troll it along ments, used.y parts easily assembled. 12"x31/4rfx49$". Incl. each model clearly showsshoindiws parts to bottom-your "treasure" haul can be out- in- Pegboardrd assembly.res.Fully illustratedgrstep anchors, other metal valu- step-by-step assembly diagrams, 32-p. procedures. No or tools re- board motors, covering operation, computer step It 5 -lb. Magnet is war surplus-Alnico struction book quired. together-work. it ables. (binary system) programming, prob- autnd itea Absolutely safe - V Type --Gov't cost $50. Lifts over 150 lbs. language expensive 9-V battery. Great fun-educational on land-much greater weights under water. lems and 15 experiments. 70.683H P $5.98 Ppd. too. No. 70,571HP $12.50 Ppd. Stock No. Stock No. 70,904HP $27.95 Ppd. Stock III STARTER KIT (Parts for S Projects) IT'S HERE-BIG, NEW DIGICOMP $17.95 Ppd Stock No. 70.903HP Stock No. 70,946HP $16.00 Ppd.

TOP-QUALITY LOW-COST S1R011E ASTRONOMICAL TELESCOPE KITS Create spectacular psychedelic lighting effects own mirror for powerful tele- with this genuine electronic strobe. Trrine LONG -WAVE BLACK LIGHT FIXTURE Grind your far parties, special occasions, experiments. fine annealed pyrex night clubs, Extremelycompactly scope. Kit contains . perfect for combos, angstroms) black light from 1 to 10 short -dura- wave (3200-4000 blank, tool, abrasives, diagonal e' hibitions. Adjusts fixture. Has 13 -statt, lamp mirror flashes per second-not a make-shlft eyepiece lenses. You build tion with old- t iaviolet)th built-in filter-eliminates harmful shorter mirror and mechanical device. Amaze friends waveultraviolet rays. Use to identify min- instrument valued from $75.00 up. time movie effects. Best party Ice -breaker ever bacteria-check for surface flaws, the action and "unfreeze" your erals, fungi, with Stock No. Diam. Thickness Price "freeze' of mod- oil and gas leakage-perfect for displays guests. Practical too-check action fluorescent paper, pelota, chalk, crayons. trace 41/a" °/a" $8.00 Ppd. erate -speed machinery. Xenon lamp gives one aluminum reflector, 70,003HP diem. reflector. Uses powder. Incl. adjustable 70,004HP 6" 1" 12.95 Ppd. Trillion flashes. 01/2" push-pull switch, connecting plug. Mount reg. 110-120 volt A.C. current. Handsome vert., hoar., or un corner. 10" L., 11/2" W.. 8" 1%" 21.00 Ppd. solid walnut cabinet, 9iá" /s"x 70,005HP other startlingly 11/4" R. 70,006HP 10" 134" 34.25 f.o.b. for Bulletin 275-describes Stock ...... 53.925 Ppd. new unique lighting effects. No. 80,124NP (Replacement Bulb) $3.25 Pod. 70,007HP 121/1" 21/8" 65.85 f.o.b. Mock No. 70.989HP $79.95 Ppd. GIANT FREE CATALOG

148 PAGES: MORE THAN 4,000 UNUSUAL BARGAINS! Completely new. Packed with huge selection of lenses, prisms. optical in- struments, parts and ac- cessories, 100's of charts, illustrations. Many hard - to -get surplus bargains. Enormous variety of tele- scopes, microscopes, bin- oculars, magnets, magni- 11 etc. For hobby- ASTRONOMICAL TELESCOPE fier,. ph,nu components, 3" ists, experimenters, workshops, fac- See stars, moon, phases of Venus, plan FLY 9 -FT. HOT AIR BALLOON tories. Shop by mail. No salesman will eis close up. 60 to 180 power-famous Mt. heights on call. Simply check coupon or write for 9 Ft. tall. Rises to amazing lust Scientific Co., Palomar reflecting type. Aluminized & Lot air. Supplied with tether attached, so can Catalog "HP" to Edmund over coated 3" diameter f/10 primary be used over and over. Easy to make, launch. Barrington, N. J. 08007. mirror ventilated cell. Equipped with 60X By. Loads of fun. Great for celebrations, sci- and mounted 3X finder scope, ence fairs, plain fun. Will lift model gliders. eyepiece Instruments, etc.-anything up Name hardwood tripod. FREE: "STAR CHART"; parachutes, io A lb. Approx. 5 ft. diana. when fully in - 272 -page "HANDBOOK OF HEAVENS"; red & white gated. lit contains 10 pre-cut Address "HOW TO USE YOUR TELESCOPE." gores (No. 1 model paper), 6 ft. 14 -gage wire Stock No. 85,050HP $29.95 Ppd. for bottom ring, top, "tie -off" curd. complete No. 85,105HP-(41/4").$84.50 F.O.B. instructions. City State lip Stock Ppd. Stock No. 85,086HP-(6"1..$199.50 F.O.B. Stock No. 60,691HP $2.00 FIRMS MONEY -BACK GUARANTEE ORDER BY STOCK NUMBER OPEN ACCOUNT TO RATED 300 EDSCORP BUILDING EDMUND SCIENTIFIC CO BARRINGTON, NEW JERSEY 08007

25 1968 EDITION

www.americanradiohistory.com BOOKMARK

technicians and engineers become familiar with this important device via a concise treatment of the SCR-Understanding Silicon Controlled Rectifiers, by Saul Heller. This fully illustrated guide introduces the reader to the SCR, familiarizes him with its theory of operation, acquaints him with the circuits in which it has been used, and provides

tiNbfRS1fNt `1 SMR$ìk Hard Cover COMICS RECTIFIERS 104 pages $3.95 who have themselves been involved in research and invention of the gas laser, show how some lasers can break through the strongest sub- stances known to man, yet other lasers can be used to transmit 3 -dimensional pictures or destroy a single, chromosome in a human cell! Soft cover Six short years/ ago, the laser was discovered. 134 pages Today, after much experimentation, progress $3.50 in atomic light has been so stupendous that one a practical understanding of this solid-state de- can easily see many applications in everyday vice. Beginning with a review of semiconductor life. fundamentals, the text goes on to present a de- This book gives you an insight into what lies tailed run-down on how the SCR is constructed, ahead with this new type of coherent light in how it operates, and what its capabilities are. the fields of medicine, communication, optics, Triggering circuits associated with the various travel, business and industry. If you can't resist SCRs are also covered. peeking into a crystal ball (and who can?), The book considers each member of the SCR this is a rare opportunity to see your future! family individually. It describes their character- If your local bookstore doesn't have a copy, istics and applications as static switches, phase - write to Sterling Publishing Co., Inc., 419 control switches, inverters, choppers, and Park Avenue South, New York, N. Y. 10016. cyclo converters. Focusing on the problem of selecting the proper SCR for a given task, the Mr. RCAI "I have in mind a plan ..." These book discusses a number of factors that in- words written in 1915 signalled the beginning fluence SCR performance. of a lifetime of prophesy by a man who has Author Saul Heller brings to this book his exercised a great influence over modern day considerable experience as writer, editor, teach- living. er and technician. He has written three other The writer was David Sarnoff and his plan books and over 200 articles in the electronics was a "Radio Music Box" to bring news and field. To get your copy of Understanding Silicon Controlled Rectifiers, write directly to Hayden Book Company, Inc., 116 West 14th Street, New York, N. Y. 10011.

Lot of Light. To the non-scientific mind, all things dealing with lasers seem utterly beyond comprehension. For these readers a new, simple and clear book opens up the fascinating world of lasers. This volume, called Atomic Light: Hard Cover Lasers, by Richard B. Nehrich, Jr., Glenn I. Voran and Norman 313 pages F. Dessel, is written in $9.95 everyday language and terms and uses a multi- tude of pictures to help reveal the facts about music into the home by wireless. Over the next the startling laser beam, the most powerful light fifty-three years, Sarnoff first dreamed and then ever dreamed possible. For the laser is simply a fulfilled. As the head of the world's foremost beam created from coherent light waves locked electronics company, the Radio Corporation of in step instead of the ordinary dispersed or in- America, he became the driving force behind

coherent waves. The increase in power is tre- such developments as network . broadcasting, mendous. black -and -white and color TV. The authors, all from San Diego, California, (Continued on page 110)

26 RADIO-TV EXPERIMENTER

www.americanradiohistory.com With CB Live Better Electronically RIGS & LAFAYETTE RADIO ELECTRONICS RIGMAROLE 1968 Catalog 680 FREE! E9E2:º_ ° Now OFF PRESS °C1 BETTER THAN EVER Over 500 Pages Stereo Hi-Fi Citizens Band Ham Gear Tape -.( E7f e 0000 .v1.7! Recorders Test Equip- t144 ment TV and Radio Tubes N and Parts Cameras Auto Accessories Musical Invaders from Space. It has outer space styl- Instruments Tools Books ing and they decided to call it The Invader. Featuring Everything in Electronics for Actually it will invade all 23 CB channels with HOME INDUSTRY LABORATORY its high level 5 -watt signal (runs about 31/2 from the "World's Hi-Fi & Electronics Center" watts output-that's good!) in the design of the LAFAYETTE Radio ELECTRONICS The "they" involved Dept. MH-8, P.O. Box 10 Invader is none other than Mark Products, 5439 Syosset, L.I., N.Y. 11791 West Fargo Ave., Skokie, I11. 60076. Mark .M Products has long been known as one of the Send me the FREE 1968 LAFAYETTE Catalog 680 MH-8 more advanced companies in CB, what with Name their Sidewinder SSB rig which we covered Address here a few issues back. The Invader uses con- ventional AM modulation. City Zip (Please Give Your Zip Code No.) t. mr.r111.

Mark Products 23 -Channel Invader Rig Some of the jazzy features of this rig include Ultrasonic 1/2 -microvolt receiver sensitivity, 29 solid-state devices in the circuit, mechanical filter for sharp Area Protection tuning, light weight (6 lbs), full-size calibrated S -meter and RF output meter, built-in PA sys- tem. The rig sells for $169.95 and an optional 110 volt AC power supply is available.

They've Got Connections. What a perplexing problem when you've either got two CB rigs and one antenna, or two antennas for one CB Euphonics Intrusion Alarm rig. Each time you want to switch over to the (Continued on page 30) This new, simplified Intrusion Alarm System projects an invisible ultrasonic beam which will cover and protect any desired area. Any person moving within its range will trigger it immediately. The Euphonics A-1 Intrusion Alarm is the ideal, low cost protector of homes, apart- ments, offices, stores and thousands of commercial / industrial establishments. Write for details and prices. Also available: AN -1 Annun- ciator; MA -2 (12 VDC) marine model.

[/phonics MARKETING Dept. RX-8 202 Park Street Miami Springs, Florida 33166 Gold Line Model 2P Coax Switch

AUGUST -SEPTEMBER, 1968 27

www.americanradiohistory.com Look What's New

NEW HEATHKIT In -Circuit Transistor Tester At last, a realistic price for in-circuit testing of transistors! The new Heathkit IT-18 Tester has the facilities you need and it costs a lot less. It measures DC Beta in -or -out -of -circuit in 2 ranges from 2 to 1000 (the spec. commonly used by mftrs. and schematics to determine transistor gain). It tests diodes in -or -out -of-circuit for forward and reverse current to indicate opens or shorts. Measures transistors out - of -circuit for ¡CEO and ICBO leakage on leakage current scale of 0 to 5,000 uA. Identifies NPN or PNP devices, anode and cathode of unmarked diodes; matches transistors of the same type or oppo- site types. Cannot damage device or circuit even if connected incor- rectly. Big 41/2" 200 uA meter. 10 -turn calibrate control. Completely portable, powered by "D" cell (long battery life). Front panel socket for lower power devices. Attached 3' test leads. Rugged polypropylene case with attached cover. Build in 2 hours. 4 lbs.

NEW HEATHKIT 1-15 VDC Regulated Power Supply Labs, service shops, hams, home experimenters ... anybody working NEW with transistor circuitry can use this handy new Heathkit All -Silicon Transistor Power Supply. Voltage regulated (less than 40 mV variation Kit no-load to full -load; less than 0.05% change in output with input IP -18 change from 105-125 VAC). Current limiting; adjustable from 10-500 $1995 mA. Ripple and noise less than 0.1 mV. Transient response 25 uS. Out- put impedance 0.5 ohm or less to 100 kHz. AC or DC programming (3 mA driving current on DC). Circuit board construction. Operates 105-125 or 210-250 VAC, 50/60 Hz. 6 lbs.

NEW HEATHKIT Low -Cost 5 MHz 3" 'Scope Here is the wideband response, extra sensitivity and utility you need, all at low cost. The Heathkit 10-17 features vertical response of 5 Hz to 5 NEW MHz; 30 my Peak-to -Peak sensitivity; vertical gain control with pull- Kit out X50 attenuator; front panel 1 volt Peak -to -Peak reference voltage; horizontal sweep 10-17 from internal generator, 60 Hz line, or external source; wide range automatic sync; plastic graticle with 4 major vertical di- $7995 visions & 6 major horizontal; front mounted controls; completely nickel -alloy shielded 3' CRT; solid-state high & low voltage power sup- plies for 115/230 VAC, 50-60 Hz; Zener diode regulatòrs minimize trace bounce from line voltage variations; new professional Heath instrument styling with removable cabinet shells; beige & black color; just 91/2" H. x 51/2" W. x 14'/z" L.; circuit board construction, shipping wt. 17 lbs.

NEW HEATHKIT Solid -State Portable Volt -Ohm Meter There's never been a better buy in meters. Solid-state circuit has FET input, 4 silicon transistors (2 used as diodes), and 1 silicon diode. 11 megohm input on DC, 1 megohm on AC. 4 DC volt ranges, 0.1000 v, with ±3% accuracy; 4 AC volt ranges, 0-1000 v. with ±5% accuracy. NEW 4 resistance ranges, 10 ohms center scale xl, x100, x10K, xl M, measures Kit from 0.1 ohm to 1000 megohms. 4%", 200 uA meter with multicolored scales. Operates on "C" cell 8.4 v. cell IM -17 and mercury (not included). Housed in rugged black polypropylene case with molded -in cover and $2195 handle and plenty of space for the three built-in test leads. An extra jack is provided for connecting accessory probes to extend basic ranges. Controls include zero -adjust, ohms -adjust, DC polarity reversing switch, continuous rotation 12-position function switch. Easy -to -build circuit board construction completes in 3-4 hours. 4 lbs.

NEW HEATHKIT/Kraft 5 -Channel Digital NEW Proportional System with Variable Capacitor Servos System Kit This Heathkit version of the internationally famous Kraft system saves GD -47 you over $200. The system includes solid-state transmitter with built-in $21995 r,.».. charger and rechargeable battery, solid-state receiver, receiver recharge- ny.r< 6 able battery, four variable capacitor servos, and all cables. Servos fea- ture sealed variable capacitor feedback to eliminate failure due to dirty contacts, vibration, etc.; three outputs; two linear shafts travel %' in simultaneous opposite directions plus rotary wheel. Specify freq.: 26.995, 27.045, 27.095, 27.145, 27.195 MHz.

28 .RADIO-TV- EXPERIMENTER

www.americanradiohistory.com From Heath NOW, THE TUNER AND AMPLIFIER OF THE FAMOUS HEATH AR -15 RECEIVER ARE NEW HEATHKIT AJ-15 Deluxe Stereo Tuner AVAILABLE AS SEPARATE COMPONENTS For the man who already owns a fine stereo amplifier, and in response to many requests, Heath now offers the superb FM stereo tuner section of the renowned AR -15 receiver as a separate unit. The new A.1-15 FM Stereo Tuner has the exclusive design FET FM tuner for remarkable sensitivity, the exclusive Crystal Filters in the IF strip for perfect re- sponse curve and no alignment; Integrated Circuits in the IF for high gain, best limiting; elaborate Noise -Operated Squelch; Stereo-Threshold' Switch; Stereo -Only Switch; Adjustable Multiplex Phase, two Tuning Meters; two variable output Stereo Phone jacks; one pair variable outputs plus two fixed outputs for amps., recorders, etc.; front panel mounted controls; "Black Magic" panel lighting; 120/240 VAC op- eration. 18 lbs. 'Walnut cabinet AE -18, $19.95.

NEW HEATHKIT AA -15 Deluxe Stereo Amplifier For the man who already owns a fine stereo tuner, Heath now offers the famous amplifier section of the AR-15 receiver as a separate unit. The new AA -15 Stereo Amplifier has the same superb features: 150 watts Music Power; Ultra -Low Harmonic & IM Distortion (less than 0.5% at full output); Ultra -Wide Frequency Response (t 1 dB, 8 to 40,000 Hz at 1 watt); Ultra -Wide Dynamic Range Preamp (98 dB); Tone -Flat Switch; Front Panel Input Level Controls; Transformerless Amplifier; Capacitor Coupled Outputs; Massive Power Supply; All - Silicon Transistor Circuit; Positive Circuit Protection; "Black Magic" Kit Panel Lighting; new second system Remote Speaker Switch; 120/240 NEW AA -15 lbs. "Walnut cabinet AE -18, $19.95. VAC. 26 16395* NEW HEATHKIT 2 -Meter AM Amateur Transceiver 2 -Meters at low cost. And the HW-17 Transceiver has 143.2 to 148.2 NEW MHz extended coverage to include MARS, CAP, and Coast Guard Auxiliary operation. Output power of tube -type transmitter is 8 to 10 Kit watts, AM. 4 crystal sockets plus VFO input. Relayless PTT operation. HW 17 Double conversion solid-state superhet. Receiver has 1 uV sensitivity with prebuilt, aligned FET tuner, ANL, Squelch, "Spot" function, and $12995' lighted dial. Signal-strength/relative power -output meter. Battery saver switch for low current drain during receiving only. 15 transistor, 18 diode, 3 tube circuit on two boards builds in about 20 hours. Btiilt-in 120/240 VAC, 50.60 Hz power supply and 3' x 5' speaker; low profile aluminum cabinet in Heath gray -green; ceramic mic. and gimbal mount included. 17 lbs. 'Optional DC mobile supply, HWA-17-1, $24.95. GD -77 Receiver / NEW HEATHKIT Home Protection System Alarm Customize your own system with these new Heathkit units to guard the $3985 safety of your home and family. Warns of smoke, fire, intruders, freezing, cooling, thawing, pressure, water, almost any change you want to be warned about. Your house is already wired for this system, just plug NEW GD -87 units into AC outlets. Exclusive "loading" design of transmitters gen- Smoke /Heat _ erates unusual signal which is detected by the Receiver/Alarm. Solid- Detector- / - - state circuitry with fail-safe features warns if components of system Transmitter have failed. Any number of units may be used in system. Receiver/Alarm has built-in 2800 Hz alarm and rechargeable battery to signal if power $4995 line fails (built-in charger keeps battery in peak condition). Receiver accepts external 117 VAC bells or horns. Smoke/Heat Detector-Trans- mitter senses smoke and 133°F. heat (extra heat sensors may be added GD -97 contacts to accept any type switch 1 Utility to it). Utility Transmitter has several Transmitter or thermostat to guard against any hazard except smoke. All units feature eircuit board construction and each builds in 3-4 hours. All are $3495 small and finished in beige and brown velvet finish. Operating cost similar to that of electric clocks. Invest in safety now with this unique new low-cost Heathkit system.

HEATH COMPANY, Dg61I-s .EATFIKIT 1110158 Benton Harbor, Michigan 49022 NEW In Canada, Nystrom Ltd. FREE 1968 CATALOG! Enclosed is plus shipping. Now with more kits, more color. Please send model (s) Fully describes these along with O Please send FREE Heathkit Catalog. over 300 kits for stereo/hl.fi, D Please send Credit Application. color Sit, electronic organs elec.trio Name guitar & amplifier, amateur radio, marine. educational, CB, Address home & hobby. Mail coupon or write Heath Company, Benton City State Zip Harbor, Michigan 49022. Prices & reifications su1ect to chan_e without notice. CL -32 HR L a. -

AUGUST -SEPTEMBER, 1968 29

www.americanradiohistory.com World Famed BREVETTATA CB RIGS & RIGMAROLE TEAR GAS PISTOL Continued from page 27 Appearance of this fine tear <^, second rig or antenna you've got to pull apart pas weapon is -similar to real gun. It is ideal for people who your operating table and grope around the rear work In lonely, dark locations of the rig the and require protection. Men for antenna connector, unscrew give this gun to wives and it, locate the other connector-oh well, you daughters for night security. get Many industrial applications. the picture! Pity is the word which was in the Shooting of gun stops aggres- sor without permanently injur- hearts of the people at Gold Line, Muller Ave., ing him. Neither permit nor license Is needed, but it Is not sold to minors. It fires six car. Norwalk, Conn. 06852. They felt genuine pity tridges without reloading. Each gun comes for CBers and designed with six tear gas shells and six blanks for a single pole two posi- practice and Is shipped prepaid. Gun unit tion switch for coaxial cables. Rated at 1000 prices include, 12 shells and all shipping costs.

I Gun -unit at $13.07 watts (even though they know that no self 7 2 Gun -units at $22.86 ($11.43 ea.) respecting CBer would dare run more than 750 3 Gun -units at $29.94 (5 9.98 ea.) 4 Gun -units at $35.16 (5 8.79 ea.) watts!), the Model 2P may be left in the an- Extra boxes of ten tear gas shells at $1.50 per box (prepaid with tenna line without any measurable signal loss gun orders). Extra boxes of blanks at $1.25 per box. UNITED SAFETY SUPPLY CO. because of its special design, brass fittings, 310 West 9th Street phenolic insulating. Kansas City 6RT, Missouri 84105 Marty Miller at Gold Line will be happy to send you additional details if you drop him a card. Tell him the boys at RADIO-TV EXPERI- VHF RECEIVER MENTER sent you. AM/FM-MULTI-BAND Johnson Rides Again (E. F., not L. B.). Yes, HIGH SENSITIVITY-SELF CONTAINED not satisfied with producing some of the most Hear police, fire, aircraft, popular deluxe sets in CB-land, Johnson has amateur CB, etc. signals. shook up a lot of people with a set which sells d. Covers 26 to 54 and 88 to for $99.95 and still maintains the high 174 mc in eight calibrated Johnson bands. Plus a ninth adjust- quality. able band for 15 or 20 meter The new baby in the Johnson family has been SW BC listening. Five tubes dubbed the Messenger 110. It's a 5 -channel rig AC power supply with silicon rectifier. with a built-in speech compression circuit, bet- Write for catalogue of complete 364C line of converters, receivers and audio equipment for recording. $59.95 KUHN ELECTRONICS, INC. 1801 Mills Ave. Norwood, Ohio 45213

TRANSISTORIZED CONVERTER KITS $5.00 EACH Three kits available. Marine 2-3 mc, police & fire, high band 100-200 mc, low band 26-60 mc. 1 mc tuning on car radio. Full instructions. E.F. Johnson 5 -Channel Messenger 110 ANY KIT $5.00 pp. WIRED $15.00 pp. FRED MESHNA, NO. READING, MASS. 01864 ter than 1/2 -microvolt sensitivity, and tiny (212H x 6 3/16W x 83D) construction for in- conspicuous mobile mounting. The set is FCC and Canadian DOT approved. E. F. Johnson Co. holes up at Waseca, Minn. 56093. Want to know more about the new Messenger? Then Seen any why not get the straight dope from them?

Rectifying Your Rig. It's now possible to re- flying saucers lately? place the rectifier tube in your CB rig with a transistorized gizmo which does not drain fila- Thousands claim they have and hundreds of eye- ment current and generates no heat, and gen- witness reports, plus the most cpmplete directory erally increases the B -plus (high voltage) of your set. of sightings ever published, appear in the fas- These replacements meet Mil Specs and can cinating pages of this Official Guide to UFOs. be directly substituted for the following tubes: Pick up a copy at your newsstand $1 or send to 6X4, 12X4, 6BW4 12BW4. Price is $6.95 each include postage and handling to Official Guide from Specialty Engineering and Sales Co., 600 to UFOs, Dept. RTV-8, 505 Park Ave., N. Y., San Mateo Blvd., S.E., Albuquerque, N. M. N. Y. 10022. 87108.

30 RADIO-TV EXPERIMENTER

www.americanradiohistory.com -7 NEW PRODVCTS HERE'S YOUR ONE -SOURCE FOR CERAMIC CAPACITORS HIGH-FIDELITY AN D AMATEVR RADIO SEMICONDUCTORS

SHORT WAVE tiLECtRQN}C =la CÜiVI"nNHNTS RECORDERS srnrInra ... and NOW GIMNICKS YOU GET fre' GADGETS e50°Fr TOOLS when you buy s TC. Components from ERIE'S _ s ia:',: »A1_(A.49.111itito f .wee. VIg,i `, 1 Vttv ELECTRONIC COMPONENTS Crazy Unmixed -Up Mixer STATION The latest in the series of microphone mixers from American Geloso is the G1/501/U. It's portable, mounted in an attractive case with NOW AT YOUR FAVORIR DISTRIBUTOR handle and built-in power supply. Geloso says the G 1 /501 /U meets all professional, commer- YOUR COMPONENTS ARE cial and industrial sound application require- ments, like: 8 low- and high -impedance chan- NEATLY PACKAGED WITH nels with individual volume control and on/off switch; high level auxiliary inputs; two COMPLETE DESCRIPTION outputs for high and low impedance amplifiers, tape recorders, and guitar amplifiers; monitor for EASY USE! earphone output with separate level control and monitor control for each channel or output; 112 Popular Components... master volume control that simultaneously ad- justs gain of all output; and individual preampli- 56 CERAMIC CAPACITORS fier each channel. The G1/501/U has a for 28 SEMICONDUCTORS

18 VARIABLE CAPACITORS

10 MYLAR CAPACITORS

On purchase of only $2.50 E FOR FREE $.50 Coupon and 6 -Page Components Catalog Send to: ERIE TECHNOLOGICAL PRODUCTS, INC. Erie Distributor Sales 644 West 12th Street Erie, Pa. 16501 PLEASE SEND CATALOG AND PRICE DATA... TODAY NAME COMPANY ADDRESS CITY STATE Geloso Electronics G1/501/U Microphone Mixer

AUGUST -SEPTEMBER, 1968 31

www.americanradiohistory.com THE ELECTRONIC INDUSTRY'S NEW PRODUCTS *****************fix MOST CURRENT 1968 CATALOG response of 30 to 20,000 Hz ± 1 dB. Unit measures 151/4 x 9 x 5 in., and may be ganged for supplemental microphone application. Sug- gested -price is $142.50; for some more info, write American Geloso Electronics, Inc., 251 Park Ave. So., New York, ALL NEW... N.Y. 10010. ELECTRONIC CATALOG Electric Auto Antennas In their expanding Brach line 4 of auto antennas, JFD Electron- YOUR BUYING ics have come out with two new GUIDE FOR: electric models-a front -mount Stereo & Hi -FI Systems & Components Tape Re- and a rear-mount-along with a corders Phonos, Radios rear -mount extension kit. The & TV's Cameras & Film PA Ham Gear Test front-mount job, Model 86-6753 Instruments & Kits Citi- zens Band Electronic ($43.40), has a 5 -section mast Parts, Tubes & Tools. that extends to 46 in. The motor SEND FOR YOURS TODAY! develops 18 to 20 lb. of thrust to raise or lower the antenna, even in BURSTEIN- sub -zero weather. This model includes in. APPLEBEE 56 of cable, and a 6 -ft. electric harnèss with DEPT.RTVT,3199 MERCIER, KANSAS CITY, MO. 641111 an up-and-down control switch and bracket. The rear -mount Name antenna, 86-6756 ($48.00), has Address i the same dimensions and power I City I output, 180 in. of shielded cable, and a 180 -in.

I State Zip Code I electric harness extension with up-and-down control switch and bracket, and a rear -mount adapter pad. Then there is the rear -mount ex- NAVY mBAAV WALKIE-TALKIE tension kit, 86-6755 ($7.50), optional with TRANS. & RECEIVER-Crystal controlled. can be operated on any one channel in freq. range 2.3 to 4.5 86-6753, consisting of 180 -in- cable extension, MC. Voice (A3) communication only; output of Trans. Is 0.2 watts & satisfactory communication between 180 -in, electric harness extension, and a rear - units over average terrain should be maintained approx. Up to one (1) mile. With Tubes: 1/1R3, 1/155, 2/1T4. mount adapter pad. Each model comes with 3/354. Voltages required: 87.5 VDC 3 MA; 135 VDC 4 MA; 1.5 VDC 225 MA f/Receiver. 87.5 VDC 1.5 MA: complete assembly 135 VDC 19 MA; 1.5 VDC 225 MA & -8 VDC 30 MA hardware including perfo- f/Trans. Ina waterproof plastic case w/space for batt. or power supply. Telescoping antenna 8 ft. Has spec. rated steel anchor brackets, metal screws, loading coil. Complete w/tube. antenna, 2 crystals FT -243 (no choice of freq.) headphones, carbonmicro- washers and instruction sheet. For further in- phone, canvas cover, & manual. Size: 8x8x 21/2". Wt.: 8 Iba $9.95 formation write to Brach Div., JFD Electronics "DAV" MODEL-Same as above, but with direction finding @' Co., 15th Ave. at 62nd St., , N. Y. loop end lip mi., plywood cane w/strap.. Size: 14x 10x3" . 17 s 95 VIBRATOR Power Supply f/MAB & DAV. Operates from 6 VDC 4 A 11219. 1.)Z -T-8 Batt. or other power source. 8s/zx3aaxla/4 2 lbs. New.á5.95 Dry Charge Battery N -T -B f/above power supply. 8 VDC 4 A...93.93 Prices F.O.B. Lima, 0.-25% Deposit on COD's-Address Dept. 39 RIO FREE CATALOG-Write for your FREE copy novel Ready for a Pro Receiver? FAIR RADIO SALES Though designed for professional applica- 1016 E. EUREKA Box 1105 LIMA, OHIO 45802 tions the Galaxy R-530 HF receiver is priced within reach of the discriminating $10 TRANSISTOR $10 amateur and IGNITION serious SWL (about $700). All solid state, of Complete electronic 2 transistor dual ignition system with for cars, boats, trucks. Fully wired harness, dual course, continuous coverage of from 0.5 primary coil, instant changeover from transistor to to 30 MHz. Crystal lattice filters are used in the conventional or back. Neg. ground, 6 or 12 volt system. Complete with instructions, ready to install. Original price $35, now only $10.00 postpaid. MESHNA 1968 Surplus Electronic catalog shows hundreds of dol- lar saving surplus bargains. Send 25Ç for new 92 page catalog. MESHNA PO BOX 62, EAST LYNN, MASS. 01904

How to Write a Classified Ad That Pulls Deluxe 48 page booklet-only $1 per copy. And, with the booklet, you get a $2 credit towards your, payment of your classified ad in RADIO-TV EXPERI- MENTER. Send $1 now to RADIO-TV EXPERIMENTER, 505 Park Avenue, New York, New York 10022. Galaxy R-530 Shortwave Receiver

. 32 RADIO-TV EXPERIMENTER

www.americanradiohistory.com **ir******xr*******%*****%*ir*

high frequency IF for optimum selectivity. Fre- quency stability, less than 100 Hz drift after THE SUPERSENSITIVE turn -on; frequency accuracy, 1 kHz throughout frequency coverage, making the R-530 particu- larly suited for communications applications where pre -assigned frequencies are to be re- DARKROOM METER ceived. R-530 offers reception of selectable upper and lower sideband, AM, CW, and RTTY sig- nals. Rear panel outputs of the PTO, high fre- S & M MODEL A-3 quency IF, AVC, RF gain control and balanced 600 -ohm audio permit dual and space diversity utilization with minimum accessories. Power re- $44.50 quirements: 115/230 VAC, 50/60 Hz, or 12 in kit form* VDC @ 1 amp. An optional standard rack $49.50 mounting is available. Total weight 23 lb. For fully further info, contact Galaxy Electronics, 10 S. 34th St., Council Bluffs, 51501. assembled*

*Carrying Case Let the Burglar Beware included Affix one of these decals to your apartment door or your car window (whether you have an alarm or not) and it's sure to have a psycho- Here is a precision instrument that meets the highest logical effect on any would-be burglar. The standards of any meter available today. The S & M chances are that thieves and vandals won't take A-3 uses the newest cadmium sulfide light cell to the chance. The cost is $1.00 for a set of two measure light levels from twilight to bright sunlight electronic alarm decals, and you may order at ASA speeds of 3 to 25,000. This supersensitive them from J. Ross, 80-34 Kent St., Jamaica, darkroom meter Is successfully used with movie or N. Y. 11432. still cameras, microscopes, telescopes and it can also be set up for use as a densitometer.

The computer gives F stops from .7 to 90 and lists ex- posure time from 1/15,000 sec. to 8 hours; 4 range se- WARNING! EV-EVS-LV The unit is also equipped Protected by lection; settings. with a large (41/2") illuminated meter, paper speed ROSS control knob and a new battery test switch. ELECTRONIC SENTRY The S & M A-3 darkroom meter is ideal for darkroom and studio applications where accuracy is a necessity. ALARM= It's available fully -assembled from the factory, or in easy to assemble kit form.

Ross Sentry Decal RTV-888 Electronic SCIENCE & MECHANICS-Kit Division 505 Park Ave./New York, New York 10022 Please Don't Hit the Deck! Please send the A-3 Supersensitive Darkroom Meter as I checked below. I understand that if I am not satisfied, Here, for serious tape recording buffs, is a may return the meter within 10 days for a complete refund. new deck from Uher, the 7000. But for this Add 10% for Canadian and foreign orders one, you don't have to be rich. In a hand - N.Y.C. residents add 5% for sales tax rubbed walnut base, the Deck 7000 has two Q $44.50-In kit form $49.50-fully assembled speeds -71/2 and 33/4 allows ips-and for D Check or money order D Enclosed $3.00 deposit, sound -on -sound recordings for multiple effects. enclosed, ship post ship balance COD, plus Precise balancing of, each channel of stereo re- paid. postage and COD cording is possible through the individual level charges. control and VU meter. Some other features A-3 Extra Carrying Case-$4.95 are: proven transport system, positive track se- NAME lection and indication for monophonic record. (Please print; ing, automatic shut-off with metallic leader, full fingertip control, 4 -digit index counter with ADDRESS push-button reset, frequency response of 40- ZIP 18,000 Hz ± 2.5 dB @ 71/2 ips; 40-15,000 Hz CITY STATE COD (Continued on page 109) ii r

AUGUST -SRO' EMBER. 1968 33

www.americanradiohistory.com RAD:0-1: V 1:.X1ERMIENTER www.americanradiohistory.com DISCOVER THE EASE AND EXCITEMENT OF TRAINING AT HOME THE NRI WAY New Achievement Kit-Custom Training Kits -"Bite Size" Texts Only NRI offers you this pioneering method of simpli- fied "3 Dimensional" home -study training in Electron- ics, TV/Radio and Broadcasting/Communications. It's a remarkable teaching idea unlike anything you have ever encountered, the result of more than half a cen- tury of simplifying, organizing and dramatizing learn- ing -at-home techniques. If you are an ambitious man -regardless of your education-you can effectively learn the Electronics field of your choice the NRI way. NRI has simplified Electronics by producing "bite size" lesson texts averaging only 40 pages each. Dozens of illustrations open wide a picture window through which you'll see and understand practical uses of Elec- tronics. You start out with NRI's exclusive Achievement Kit, containing everything you need to get started fast. (Illustrated at right.) NRI has organized Electronics training to take you YOU GET MORE FOR step-by-step from the first stages into more intriguing areas. Once you know the fundamentals thoroughly, it's YOUR MONEY FROM NRI easy to grasp more advanced theory and techniques. You move with confidence and enthusiasm into a new Mail postage -free-card now for your free NRI catalog. adventure filled with the excitement of discovery. Then, compare. You'll find-as have thousands of others NRI has dramatized Electronics through the careful -NRI training can't be beat. Read about the new development of special training equipment that is Achievement Kit sent the day you enroll; about "bite - programmed into your training systematically ... be- size," texts and custom designed training equipment. ginning with your first group of lessons. Things you See why NRI gives you more value. Whatever your reason read about come alive in your hands as you build, ex- for wanting more knowledge of Electronics, NRI has an periment, purposely cause "problems" in circuits- instruction plan for you. Choose from major programs in and solve them. You learn to use test equipment, to TV/Radio Servicing, Industrial Electronics and Complete Or select from build radios and TV sets, transmitter, or computer Communications. AvailableUnder circuits. It's the priceless "third dimension" in NRI special courses to meet specific training ... practical experience. needs. Check the course of inter- NEW est to you on postage -free card and mail today for free NRI cata- GI BILL If you served since More than 50 years of leadership log. Nosalesman will call. NATIONAL January 31, 1955, or are in service, check RADIO INSTITUTE, Electronics Div., - in Electronics Training GI line in postage Washington, D.C. 20016. free card. Career? Part -Time Earnings? Hobby? Choose From 12 Training Plans

1. TELEVISIONRADIO SERVICING - 5. MATH FOR ELECTRONICS - Brief 9. MARINE COMMUNICATIONS*- Learn to fix all TV sets, including Color. course for engineers, technicians seek- Covers electronic equipment used on Includes your choice of NRI Color Kit or ing quick review of essential math: commercial ships, pleasure boats. Pre- 19" black -white TV Kit. Also covers basic arithmetic, short-cut formulas, pares for FCC License with Radar radios, stereo hi-fi, etc. Profitable field digital systems, etc. Endorsement. spare or full-time. 10. MOBILE COMMUNICATIONS*- 6. BASIC ELECTRONICS - For anyone Learn to install, maintain mobile trans- 2. INDUSTRIAL -MILITARY ELECTRON- wanting a basic understanding of Radio- mitters and receivers. Prepares for FCC ICS - Basics to computers. Starts with TV Electronics terminology and compo- License exams. fundamentals, covers servos, telem- nents, and a better understanding of etry. multiplexing, phase circuitry, other the field. 11. ELECTRICAL APPLIANCE REPAIR- subjects. Learn to repair all appliances, including small gag 7. ELECTRONICS FOR AUTOMATION - air conditioning, refrigeration, engines. Leads to profitable part or full- 3. COMPLETE COMMUNICATIONS* - Not for beginners. Covers process con- Operation, service, maintenance of AM, trol, ultrasonics. telemetering and re- time business. FM and TV broadcasting stations. Also mote control, electromechanical meas- 12. ELECTRONICS FOR PRINTERS - covers marine, aviation, mobile radio, urements. other subjects. Operation and maintenance of Elec- facsimile, radar, microwave. tronic equipment used in graphic arts 8. AVIATION COMMUNICATIONS* - industry. From basics to computer dir. 4. FCC LICENSE* - Prepares you for Prepares you to install, maintain, serv- éuits. Approved by major manufacturers. FCC License exams. Begin ice aircraft in-flight and landing sys- 1st Class *You must pass your FCC License with fundamentals, advance to required tems. Earn your FCC License with exams (any Communications course) or NR1 subjects in equipment and procedures. Radar Endorsement. refunds in full the tuition you have paid.

AUGUST -SEPTEMBER, 1968 37 www.americanradiohistory.com risers M this issue, Consult their ads for additional in

OrCI]y °kl â t iheations. :w' .. tl<1I)1U EL éClRilAM

CB -AMATEUR RADIO - 115. Get the full story on Poly - slog for electronic gear that can be SHORTWAVE RADIO ironies Laboratories' latest CB entry modified to your needs. Fair way to Poly -Pup. Full 5 -watts, great for mo- save cash. bile, base 102. No never mind what brand or portable use. Works on 6. Bargains galore, that's what's in your CB set is, Sentry has the crystal 12 VDC or 117 VAC. store! Poly-Paks Co. will send you you need. Same goes for ham rigs. 100. You can get increased CB range their latest eight -page flyer listing the Seeing is believing, so get Sentry's and clarity using the "Cobra -23" latest in available merchandise, in- catalog today. Circle 102. transceiver with speech compressor - cluding a giant $1 special sale. 130. Bone up on the CB with the receiver sensitivityis excellent. Cata- B&K. *10. Burstein-Applebee offers a new latest Sams books. Titles range from log sheet will be mailed by giant catalog containing 100s of big "ABC's of CB Radio" to "99 Ways Division of Dynascan Corporation. pages crammed with savings includ- to Improve your CB Radio." So Cir- 54. A catalog for CBers, hams and ing hundreds of bargains on hi-fi kits, cle 130 and get the facts from Sams. experimenters, with outstanding val- power tools, tubes, and parts. Grove Electron- 107. Want a deluxe CB base sta- ues. Terrific buys on 11. Now available from EDI tion? Then get the specs on Tram's ics' antennas, mikes and accessories. (Electronic Distributors, Inc.): all new Titan II -it's the SSB/AM a cata- rig you've log containing hundreds of electronic been waiting for! items. EDI will be happy to place you 101. If it's a CB product, chances ELECTRONIC PARTS on their mailing list. are International Crystal has it listed in their colorful catalog. Whether kit *135. Get with ICs! RCA's new 120. Tab's new electrpnics parts cat- or wired, accessory or test gear, this integrated Circuit Experimenter's Kit alog is now off the press and you're CB -oriented company can be relied KD2112 is the first of its kind and welcome to have a copy. Some of on to fill the bill. should be a part of your next project. Tab's bargains and odd -ball items are Get all the facts direct from RCA. unbelievable offers. 96. If a rugged low-cost business/ Circle 135. industrial two-way radio is what 117. Harried by the high cost of you've been looking for, be sure to 132. Discover 18 new and different parts for projects? Examine Bigelow's send for the brochure on E. F. John- professional -quality amplifiers, tuners, 13th Anniversary catalog packed with son Co.'s brand new Messenger "202." and preamps completely assembled "Lucky 13" specials. on PC -boards now offered by Amper - *129. Boy, oh boy -if you want to ex. Prices will amaze you! read about a flock of CB winners, get ELECTRONIC PRODUCTS your hands on Lafayette's new 1968 1. Allied's catalog is so widely used catalog. Lafayette has CB sets for all as a reference book, that it's re- *42. Here's colorful 108 -page cat- pocketbooks. garded as a standard by people in the alog containing a wide assortment of electronics industry. Don't you have electronic kits. You'll find something 103. Squires -Sanders would Ilke you for any interest, any budget. And to know about their CB transceivers, the 1968 Allied Radio catalog? The surprising thing is that it's free! Heath Co. will happily send you a the "23'er" and the new "S5S." Also. copy. CB accessories that add versatility to *2. The new 1968 Edition of Lafay- their 5-watters. ette's catalog features sections on *44. Kit Builder? Like wired prod- 46. A long-time builder of ham stereo hi-fi, CB, ham gear, test equip- ucts? EICO's 1968 catalog takes care equipment, Hallicrajters will send you ment, cameras, optics, tools and much of both breeds of buyers. 32 pages lots of info on ham. CB and com- more. Get your copy today. full of hi-fi, test, CB, ham, SWL, au- mercial radio equipment. tomotive and hobby kits and prod- *8. Get it now! John Meshna, Jr.'s ucts -do you have a copy? 122. Discover the most inexpensive new 46 -page catalog is jam packed CB mobile, Citi-Fone lI by Multi- with surplus buys -surplus radios, 128. If you can hammer a nail Elmac Company. Get the facts plus new parts, computer parts, etc. and miss your thumb, you can as- other CB product data before you semble a Schober organ. To prove the buy. *23. No electronics bargain hunter point, Schober will send you their should be caught without the 1968 catalog and a 7 -in. disc 116. Pep -up your CB rig's perfor- copy of Radio Shack's catalog. Some recording. mance with Turner's M-1-2 mobile equipment and kit offers are so low. 126. Delta Products new capacitive microphone. Get complete spec sheets they look like misprints. Buying is discharge ignition system in kit form and data on other Turner mikes. believing. will pep up your car. Designed to 48. Hy -Gain's new CB antenna cata- *5. Edmund Scientific's new cata- cut gas costs and reduce point and log is packed full of useful informa- log contains over 4000 products that plug wear. Get Delta's details in full - tion and product data that every embrace many interests and fields. it's color literature. CBer should know. Get a copy. a 148 -page buyers' guide for Science 66. Try instant lettering to mark 111. Get the scoop on Versa- Fair fans. control panels and component parts. Tronics' Versa-Tenna with instant 106. With 70 million TV and 240 Datak's booklets and sample show magnetic mounting. Antenna models this easy dry transfer method. available for CBers, hams and mobile million radios somebody somewhere units from 27 MHz to 1000 MHz. will need a vacuum tube replacement 109. Seco offers a line of special- at the rate of one a second! Get Uni- ized and test equipment 45. Hams, CBers, experimenters! versal Tube Co.'s Troubleshooting standard World Radio Labs 1968 catalog is a that's ideal for the home experimenter Chart and facts on their $1 flat rate and pro. Get specs and prices today. bargain hunter's delight. Get your per tube. copy -it's free. *4. Olson's catalog is a multi- TOOLS 50. Get your copy of Amphenot's colored newspaper that's packed with "User's Guide to CB Radio" -18 more bargains than a phone book has *78. Need an extra hand? Xcelite's pages packed with CB know-how and names. Don't believe us? Get a copy. Seizers clamp tightly, hold wires for chit-chat. Also, Amphenol will let soldering, act as heat sinks, retrieve you know what's new on their prod- *7. Before you build from scratch small parts from hard to reach places. uct line. check the Fair Radio Sales latest cat- Get Xcelite Bulletin N564 for details.

38 RADIO-TV EXPERIMENTER

www.americanradiohistory.com 118. Secure coax cables, speaker 19. Empire's new 16 -page, full -color 31. All the facts about Concord wires, phone wires, etc., with Arrow catalog features speaker systems in Electronics Corp. tape recorders are staple gun tackers. 3 models for wires odd shapes for beautiful room decor. yours for the asking in a free book- and cables from 3/16" to 1" die Also, rediscover Empire's quality let. Portable, battery operated to four - Get fact -full Arrow literature. turntable line and cartridges. track, fully transistorized stereos cov- er every need. 124. Now, Sonotone offers you recording SCHOOLS AND EDUCATIONAL young ideas In microphone use in 32. "Everybody's Tape Recording their new catalog. Mikes for talk ses- Handbook" the title of a booklet *74. Whiz through math and elec- sions, swinging combos, home reºord- is tronics problems without that Sarkes-Tarztan will send you. pencil and ing, PA systems and many more uses. It's 24-pages jam-packed with info for paper. Get the facts on the amazing the home recording enthusiast. In- electronics slide rule and 4-lesson in- 26. Always a leader, H. H. Scott introduces a new concept in stereo cludes a valuable table of recording struction course offered by Cleveland times for various tapes. Institute of Electronics. No charge console catalogs. The information - packed 1968 Stereo Guide and catalog at all. are required reading for audio fans. 34. "All the Best from Sony" is an *136. "Power Engineering," a new ideal 8 -page booklet describing Sony -Super- 32 -page, illustrated brochure by ICS 85. Write the specs for an scope products-tape recorders, mi- (International Correspondence preamp and amp, and you've spelled crophones, tape and accessories. Get Schools) describes seven ICS Power out Dynaco's stereo 120 amp and a copy before you buy! Engineering courses that may open PAS -3X preamp. So why not get all a new career for you. Get a copy the facts from Dynacol 35. If you are a serious tape audio- today! 119. Kenwood puts it right on the phile, you will be interested in the line. The all -new Kenwood stereo -FM 'all new Vticing/Telex line of quality 114. Prepare for tomorrow by receivers are described in a colorful tape recorders. studying at home with Technical I6 -page booklet complete with easy- Training International. Get the facts to -read -and-compare spec data. Get today on how you can step up in your copy today! your present job. HI-FI ACCESSORIES 131. Let Elpa send you "The Rec- 137. For success in -communications, ord Omibook." It's a great buy and 112. Telex would like you to know broadcasting and electronics get your Elpa wants you to have it free. Your about their improved Serenata Head- First Class FCC license and Gran- records will thank you when the mail- set -and their entire line of quality tham School of Electronics will show man delivers it. stereo headsets. you how. Interesting booklets are yours for the asking. 17. Mikes,, speakers, amps, re- 104. You can't hear FM stereo un- ceivers -you name it, Electro -Voice less your FM antenna can pull 'em in. 138. For a complete rundown on makes it and makes it good. Get the Learn more and discover what's avail- curriculum, lesson outlines, and full straight poop from E -V today. able from Finco's 6 -pager "Third Di- details from. a leading electronic mensional Sound." school, ask for this brochure from the 27. 12 pages of Sherwood receivers, Indiana Home Study Institute.. tuners, amplifiers, speaker systems, and cabinetry make up a colorful 105. Get the low-down on the latest booklet every hi-fi bug should see. TELEVISION in educational electronic kits from Trans -Tek. Build light dimmers, 95. Confused about stereo? Want to *70. Need a new TV set'? Then as- amplifiers, metronomes, and many beat the high cost of hi-fi without semble a Heath TV kit. Heath has compromising on the results? Thin -all sizes. B&W and color, portable more. Trans-Tek helps you to learn need the by while building. you new 24 -page catalog and fixed. Why not build the next Jensen ManuJacturing. TV you watch? 3. Get all the facts on Progressive 99. Get the inside Info on why du-Kits Home Radio Course. Build TelexfAcoustech's solid-state ampli- 127. National Schools will help you 20 radios and electronic circuits; fiers are the rage of the experts. Col- learn all about color TV as you parts, tools and instructions come orful brochure answers all your ques- assemble their 25 -in. color TV kit. with course. tions. ._Just one of National's many exciting and rewarding courses. HI-FI/AUDIO )APE RECORDERS AND TAPE 134. Discover PlayTape-America's 97. Interesting, helpful brochures newest tape cartridge and tape play- 123. Yours for the asking-Elea's describing the TV antenna discovery ers. Units priced at under $17 with new "The Tape Recording Omni - of the decade -the log periodic an- cartridges at.45-disc prices. PlayTape book." 16 jam-packed pages on facts tenna for VHF and UHF -TV, and *has one of America's largest record- and tips you should know about be- FM -stereo. Get it from JFD Elec- ing libraries. fore you buy a tape recorder. tronics Corporation.

I RADIO-TV EXPERIMENTER Dept. 868 Indicate total number of booklets requested 505 Park Avenue New York, N. Y. 10022 1 2 3 4 5 6 7 8 10 11 Please arrange to have the lit- 17 19 23 26 27 31 32 34 35 42 erature whose numbers I have 54 66 70 74 78 circled sent to me as soon as 44 45 46 48 50 possible. I am enclosing 25e for 85 95 96 97 99 100 101 102 103 104 1 to 10 items; 50C for 11 to 20 116 117 items to cover handling. No 105 106 107 109 111 112 114 115 stamps, please. 118 119 120 122 123 124 126 127 128 129 11.20 items 130 131 132 134 135 136 137 138

NAMF

ADDRESS

CITY

7IP i maximum number of items 20 STATF

AUGUST -SEPTEMBER, 1968 3`.)

www.americanradiohistory.com Can't find the ASK ME ANOTHER RADIÒ TV EXPERIMENTER key 505 PARK AVENVE NEW YORK, N.Y.10022 to electronics? -then get your electronics cool with this Six and Twelve introductory offer to the two leading elec- 1 want to build a battery eliminator with a tronics magazines! Use coupon: 6- and 12 -volt ou(put, 110 -VAC input, and giving up to 3 amps. Can you give me a sche- 1 matic or tell me where to get one? DAVIS RTV-868 PUBLICATIONS, INC. D., Belleville, 505 Park Avenue/New York, N.Y. 10022 -W. Ill. Yes! I want to find the key to electronics. .O1H Begin my subscription to both RADIO-TV 117 EXPERIMENTER and ELEMENTARY ELECTRON- VAC ICS at your special low -subscription rate of

$7.00 12.6V - 3AMP Bill me later. D Check enclosed. FILAMENT TRANSFORMER Name 12V Address The circuit shown employs a bridge rectifier

City State Zip I for 12 volts and a full -wave rectifier for 6 volts. (Outside U.S.A. & Canada add $1.50 pstge. & hndlg.) The diodes should be able to handle at least 2 amperes, preferably more to allow a margin of safety. -Now, both of these fine magazines will be delivered to you at the special subscription rate Calling All Cars of just $7.00 ... save $2 from newsstand price. Can you tell me where KEX-460 is located? I hear it near 168 MHz on my FM receiver. 1 ELEMENTARY think the station is a police unit near me. ELECTRONICS -1. R. M., Morton, Pa. Regarding police units, it's unlawful for any- The magazine that serves up one to divulge what was transmitted, or that a electronics theory in pleasant transmission took place. Amateur or broadcast spoonfuls and reinforces the stations are an exception. The operators of would knowledge you gain with KEX-460 undoubtedly take a dim view of your listening to their transmissions. They're exciting and useful projects. supposed to be as private as your telephone RADIO-TV calls. EXPERIMENTER Rad tr r. eee w All Charged Up 'EXERIMENTERig ra.M.sNuwnöiulFiLea The magazine dedicated to the x: have an outboard motorboat with transistor- hobbyist-the man who ized ignition and an alternator for charging the wants to obtain a fuller and 12 -volt storage battery. Also, a depth finder which now runs on a separate 12 -volt broader knowledge of dry -cell battery. The depth finder produces stray flashes electronics through the when I hook it up to the boat wiring system be - applications of his bobby. (Continued on page 116)

40 RADIO-TV EXPERIMENTER

www.americanradiohistory.com Radio'1U AUG -SEPT 19B8 EXPERIMENTER

2) Mall' By Charles Green, W6FFQ

There may be ore on that shore, so build our treasure tracker and take a sec to know for sure

Has your girl ever complained about a lost earring just as you're about to leave the beach and make your way home? Have the kids ever buried their favorite pail under inches of what looks like a murky quicksand? Well, now for the first time, RADIO-TV EXPERIMENTER has come up with a metal locator that'll help you solve problem,S like these. And it'll throw some fun and fortune into the bargain as well. For (Continued overleaf)

41 AUGUST -SEPTEMBER, 1968 www.americanradiohistory.com battery, it is light enough to permit easy operation as a search tool. (As you can see from the photos, there are two versions of realm) Gold Grabber-one jazzed up by the editors, whether it's minor disasters like the ones and one constructed by the author. You mentioned, or just a natural lust to go out choose the one best for you. But stay away adventuring. Gold Grabber will keep you from ferrous material! Brass screws will do, busy like nothing you've ever seen. but epoxy glue would be best.) Pieces of Eight. Lucky folks down in Most metal locators are complex to build, the Caribbean or in the California and Cen- but Gold Grabber has a simplified design tral Ameriça areas can go looking for the ,that makes for easy construction. The sim- gold coins and relics which abound on some plified circuit, of course, is not designed for of the exotic beaches and landscapes. And great depth penetration in the earth. But the battlefields of Civil War fame are hunt- metallic objects lying close to the surface ing grounds that should keep any buff 'busy should be no problem. for days on end. Two FETs (field-effect transistors) and a You can also use Gold Grabber to find conventional transistor are used in an RF buried cables and conduits; to make up beat-frequency, metal -detector circuit which games for the youngsters so they can have does not require any complex test equipment fun looking for hidden objects; or just to for initial adjustment. help out a friend in need of a metal locator. The Circuit. Q1 (an n -type FET) is con- In fact, every reader will be able to come nected to L and C1 in a Hartley oscillator up with countless ideas that'll increase the circuit operating at a frequency of approxi- value of his instrument a thousandfold. mately 500 kHz. The source electrode of Easy Operation. Gold Grabber consists Q1 is connected to a tap on L1 to obtain of a search loop and locator unit mounted the RF feedback needed in this circuit. The on a wooden handle. Since the locator unit C2/R1 combo form the gate -leak self-bias is all -solid-state and powered by a mercury for Ql.

NI1111,1,,1111,,,,,,,,,;,,,,111111111/1,,,,,,,,,,,,,111,,11 ,11111111,4 11101111.1111111 Layout shown below allows space for plenty of components. OSCILLATOR Check clearance of pot R6, and 01

make sure that green index L1 (LOOP) P1 dot of L2 shows on top of coil. NT *J1 Parts must be anchored securely.

GND

TAP

3 BOTTOM VIEW C2 01, 02

R R1 d CASE (NC) = C Cl HEP MOTOROLA HEP - 801 MOTOROLA - 51 C C4 "N TYPE FET "P" TYPE TRANSISTOR

= R 02

3 B1 -8.4-V mercury battery (Mallory TR -286 = C8 or equiv.) 12 g C7 C1-220-pF mica capacitor R7 E R3 C2, CS, C7-470-pF, 50-V disc ceramic capac-

: R5 C10 itor C3-.001 uF, 50-V disc ceramic capacitor C1; R8 C4-10-pF, 50-V tubular ceramic capacitor C11 C9 C6-470-pF mica capacitor C8, C1,0, C12-5-uF, 15-V electrolytic capac- = St itor C9, C11-.005-uF, 50-V disc ceramic capacitor C13-10-uF, 15-V electrolytic capacitor J1-phone pin lack

1111114/111111n111.11/u,11111111,W1111111114u,1 111111u,111111111111,n11111m1111111111.1111.,,,,u.uR

42 - RADIO-TV EXPERIMENTER

www.americanradiohistory.com LI is an external loop which radiates the 3x21/4 -in. aluminum box. We'll start with oscillator RF energy. A small portion of the locator unit in the box. this RF is coupled via C4 to the oscillating Best way to begin construction is to in- detector circuit of Q2. Note that Q2 is con- stall two 11/4 -in. macktine screws spaced two nected in a Hartley circuit similar to Q 1, inches apart and centered on the long side except that the gate leak is much larger, and of the box. The screws extend out from the the detected output is taken from the drain bottom of the box and are used to mount electrode. the box to the loop assembly. Use serrated Resonant circuit L2/C6 is tuned to a fre- washers with the nuts to prevent any move- quency very close to the operating frequency ment. of the Ql oscillator, thereby producing an Cut a section of perforated wiring board audio beat -note signal from detector Q1. to approximately 2% x4 in. and mount it as This audio signal is coupled through C8 and shown in the photo with machine screws and low-pass filter R5/C9 to volume control R6. nuts. Position it 3/8 in. above the box bot- The audio signal from R6 is amplified by tom. Install two ground lugs as shown in the circuit of Q3 and direct -coupled to J3. the photo, and use serrated washers as re- and a pair of external 2000 -ohm earphones. quired. When RF energy radiated from external Mount the components on the sides of loop Ll is absorbed by a nearby metallic the box as shown, using washers to prevent conducting surface, the Q1 oscillator circuit movement. Position R6 to stay clear of the changes its frequency. This change in fre- top cover and mounting screws. Battery B1 quency also changes the beat -note frequency is fastened to the side of the box with a tape - of the Q2 detector circuit, thereby changing covered aluminum strap. Position L2 so the frequency of the audio signal heard in that its green index dot is on top of the coil. the earphones. Insert the push -in terminals, and mount On Your Way. The Gold Grabber has the parts on the wiring board as shown in two major assemblies: the external loop, and the photo. Make your connections with the oscillator/amplifier mounted in a 51/4 x short, stiff leads to prevent movement. There

+I 68 DETECTOR AMPLIFIER 10 7 5uF R5 03 C11 1K PITCH I C5 770. R45V Cl .005 470 2.2K J L2 b Cb When working with o 40 units, it's important C12 to adjust tuning slug I .005 -- in 15t of L2 so that change beat -note frequency can be detected quickly. Audio tone comfortable for opera- B1 8.4V tor will help. If beat note isn't . heard, external loop LI must be (ON R6) adjusted for correct frequency.

PARTS LIST FOR GOLD GRABBER J2-Phono jack R5 -1000 -ohm, 1/2 -watt resistor J3-phone jack R6 -10,000-ohm, audio taper potentiometer L1-Loop (see text) (with Si) L2-Tapped oscillator coil (Miller X -5496-C R7 -1,000,000 -ohm, 1/2 -watt resistor or equiv.) S1-Spst switch (part of R6) P1-Phone tip plug 1=51/4x3x21/8-in. aluminum box (LMB-780 P2-Phono plug or equiv.) 01, 02-HEP-801 FET (Motorola) Misc.-1/8-in. masonite, 7/8 -in. OD aluminum Q3-Pnp-HEP-51 pnp transistor (Motorola) tubing, 3/4 -in. wooden dowel, #22 plastic - R1 -33,000 -ohm, 1/2 -watt resistor insulated hook-up wire, hardware, perf R2, R8 -220 -ohm, 1/2 -watt resistor board and push -in terminals, knob to fit L2 R3 -2,200,000 -ohm, 1/2 -watt resistor tuning screw (optional) and knob for R6, R4 -2200 -ohm, 1/2 -watt resistor 2000 -ohm earphones, wire, solder, etc.

AUGUST -SEPTEMBER, 1968 43

www.americanradiohistory.com &:cdi Gl2L1162) is no electrical connection to the case leads of Q1 or Q2, but the leads should be con- nected to push -in terminals to help support the FETs. Make sure that all parts and wir- ing are anchored down, or performance of the Gold Grabber will be affected. Use spa- ghetti over the leads of) Q1, Q2, and Q3 to prevent shorts. Looping The Loop. Fasten four nails in a 6 -in. square of a piece of scrap wood. The nails should protrude approximately i in. Wind 10 turns of #22 plastic -covered wire Loop should first be constructed on a piece (Belden 8530 or equiv.) around the square, of scrap wood, with three connections for Hi, Tap, and Gnd. Two wires from ground and connect a length Of wire at this point for lead are wrapped around opposite sides of loop. the tap. Continue winding until there are 25 turns forming the square loop. inch apart on both sides of the loop. Drill the Carefully remove the nails and wire loop holes and lace the loop onto the board with from the scrap, tape the corners of the loop insulated tubing or fish line. Make sure the with plastic tape, and connect a length of loop is tightly secured. wire to the start of the loop (ground end). Hold On Tight. Cut one end of a 15 -in. This done, wrap it tightly around one-half length of 3/4 -in. wood dowel at a 45 -deg of the loop spaced approximately in IA -in. angle and fasten it to the end of the loop turns. Tape the end to the loop. Then con- board with two machine screws and nuts nect another length of wire to the ground (brass screws are a must) : end of the loop and wind it around the re- Mount the aluminum box on the wood maining side of the loop in the same way. dowel approximately 3 in. up from the loop Tape the end to the loop, making sure it does board. You can use a 44 -in. length of %a -in. not short to the other length of wire. OD aluminum tubing for a handle, and fas- Cut the three -loop leads to approximately ten it to the dowel approximately 3 in. be- 5 in. and connect them to P1 and P2 as hind the box with two machine screws. shown in the schematic. Twist the leads of (Since the tubing can be of any convenient P2 together. Make sure the loop is firm, but length, you can make it as long as desired.) use tape sparingly to hold it together. Plug It In. To test the Gold Grabber, Now cut a 10 -in. square of tempered Va- connect the loop to J1 and J2, plug a pair of in. hardboard and round _the corners as 2000 -ohm earphones into J3, and turn R6 shown in the photo. Center the loop on the full clockwise for maximum 'volume. Adjust board, and mark hole locations about an (Continued on page 111)

Photos of author's unit show slight variations from model on cover. Brass screws are a must, as use of any ferrous materials will affect metal lo- cator's performance greatly.

41 RADIO-TV EXPERIIYIENTER

www.americanradiohistory.com By Jorma Hyypia

WHAT IIV[S WITH OLD SOL?

i -I About 500,000 years ago, Homo Sapiens first turned his uncomprehending, bedazzled eyes toward the sun. Yet almost everything he now knows about this star has been learned in the last 350 years. With the aid of elec- tronics, man will learn more about this seeth- ing, life -supporting furnace during the next decade than he has ever been able to grasp in the preceding half million years of sun - watching! Until now, our astronomers have been trap - (Continued overleaf)

AUGUST -SEPTEMBER, 1963 45

www.americanradiohistory.com Aeronautics and Space Administration's VtiIIATCIVLti major efforts in solar physics.. But NASA alone cannot handle a project as complex WITH 0111 SUL? as this; many other groups having specialized experience must participate. Organizations ped behind an imprisoning barrier of air cooperating in the OSO -IV experimental pro- that permits only a partial glimpse of outer space. Like a prisoners peering through the NASA photo iron bars in the window of his cell, the as- tronomer has had only a limited view of what exists in the outer world. He has been forced to deduce the nature of that world mainly on the basis of brief, often distorted glimpses of passing events. The advent of the space age has changed all that. For the first time, man has placed an astronomic observatory outside of the earth's atmospheric mantle where he now has an unobstructed view of the sun, and of the universe as a whole. Unquestionably, electronics provided the vital key to this liberation. The spectacle of a huge rocket leaving its launch pad is mani- fest in the thunderous roar of burning fuel. Above, photo of sun taken by Air Weather Serv- But only a complex system of electronics ice personnel using only light emitted by hydro- can start this relatively simple combustion gen gas. Such specialized pictures tell much about sun's process. chemical composition and nature of Electronic systems guide the space different types of solar radiation. At right, photo vehicle to its proper orbit, stabilize it there, of sun taken during total eclipse. Whereas pre- manipulate the payload instruments that viously the corona could only be studied in pro- gather information from outer space, and file-daring an eclipse-now earth -orbiting ob- communicate by telemetry the acquired servatories probe all of it except for small por- data back to men on the ground. tion behind solar disk. Below, solar flares re- Orbiting Observatory. On October 18, sulting from sunspot activity create lethal clouds 1967, a three -stage Delta launch vehicle of radiation. These deadly blasts can kill space travelers, throw orbiting satellites roared off the pad at Complex 17 at Cape off course, and disturb vital radio communications systems. . It pushed a 599-1b. solar observa- tory into a 350 -mile circular orbit around the earth. Its mission was to obtain new infor- mation about the nature of the sun by meas- uring ultraviolet, X-ray, and other -radia- tions that cannot penetrate the earth's atmos- phere and therefore cannot be studied at ground level. This latest Orbiting Solar Observatory (OSO -IV) is the fourth such space labora- tory to be sent aloft and the first to concen- trate entirely on the sun.. During its planned tour of duty of about six months, OSO-IV will aim nine different pieces of astronomical equipment at the sun with awesome accuracy and efficiency. And this is only the beginning. Other observatories will follow OSO -IV into space gram include: Harvard College Observatory, to continue observation of the sun for most U.S. Naval Research Laboratory, American of an eleven-year period-a full solar cycle Science and Engineering, Inc., University during which the sun will pass through its College and the University of Leicester (Eng- characteristic quiet and active phases. land), and the University of California. The OSO program is one of the National Electronic Pilot.. All of the sophisticated

46 RADIO -PV EXPERIMENTER

www.americanradiohistory.com 1.1111- -

observational equipment contained in OSO - tion opposite to the spinning wheel. To- IV would be useless unless the spacecraft is gether, the four eyes have a 360-deg. field aimed accurately at the sun and stabilized of view. When the pair of eyes on the side during its orbital travels. After three months facing the sun sense the morning sunlight. in orbit, it is obvious that the ingenious elec- the servo motor is activated to hold the sun tronic pilot inside OSO-IV is doing its job within 3 deg. of perfect alignment with the magnificently. instruments contained in the sail. Other It is not an easy job. The sun, some 94 eyes mounted near the viewing ends of the million miles away, appears as a small tar- observatory instruments provide additional get. To draw an accurate bead on this tar- corrections for an aiming within one min- get from a laboratory zipping around the ute of arc in azimuth and elevation. earth at great speed, the OSO -IV system must No Rock 'n Roll. Rolling and pitching of have a pretty steady eye. In fact, as we shall the spacecraft must be kept at a minimum. see. it requires several pairs of eyes to per- An aspect -monitoring system- measures the form the feat. craft's roll position in relation to the sun by The OSO -IV system has two main sec- means of a magnetometer that senses the tions: 1) a spinning wheel, which is sur- craft's position relative to a plane in the mounted by 2) a sail that can be tacked into earth's magnetic field. Simultaneously, the the direction of the solar wind. To stabilize system produces a time pulse which indicates the spacecraft properly, the wheel section points along the magnetic plane at which the must spin within a fairly narrow rpm range. spacecraft sights on the sun. Information obtained from the aspects -monitoring system, along with data on the craft's pitch angle, is compared to known values of the earth's magnetic field using a ground -based com- puter. The calculated roll angle will then serve to indicate what corrective measures are needed. Any backward or forward pitching mo- tion is controlled by an automatic system that maintains the spacecraft spin axis with- in 3.5 deg. of the perpendicular to the direc- tion of the sun. A pair of photoelectric eyes on the sun side of the sail and their associ- ated electronic circuits activate pitch -control gas jets mounted inside the top edge of the sail. This pitch -control system can also be A set of silicon photoelectric eyes on the worked by command control from the rim of the wheel count the frequency at ground. which they see the sun as the wheel spins. A magnetic torque coil wound around the If the frequency exceeds 41 spottings per inside hub of the wheel section also helps minute, nitrogen gas is released through tiny minimize pitching. The coil can be energized jets on the gas storage bottles to slow down in three basic modes by ground command. the wheel. If the spin rate drops below 26 Power can' be adjusted to full, half, or off rpm, jets on the opposite sides of the bottles levels. The polarity of the coil can even operate to speed up the wheel. be reversed. When energized, the coil pro- The semicircular sail atop the wheel is duces a torqueing force perpendicular to about 44 in. wide, and is covered with 2016 the coil which tends to line up perpendicu- solar cells. Inside the sail are the electronic lar with the earth's magnetic field. Since the and mechanical components used to operate force also coincides with the spin axis of the it. While the ship is in the dark stage of spacecraft, it helps to minimize any pitching orbital flight, the sail rotates along with the action. supporting wheel. But each time the craft Communications Complex. The OSO -IV comes back into the sunlight, the sail locks communications system must perform three onto the sun. basic chores: 1) receive and process com- Two pairs of silicon photodetector eyes- mand signals, 2) record experimental data, a pair on each side of the sail-control a 3) transmit experimental and spacecraft servo motor that drives the sail in a direc- operational data to the ground. (Turn page)

AUGUST -SEPTEMBER, 1968 47

www.americanradiohistory.com commanded to play báck the- information at WHAT CW[S 18 times the recording speed-at 7200 bits per second. A complete transmission takes WITH OLD SOL? only about five minutes. After playback, the tape recorder automatically reverts back to The system accepts 140 different com- the record mode and the craft resumes mands in digital form, using two on -board transmitting real-time data. command receivers that operate continually Power Package. The spacecraft requires to protect against possible failure of a single about 26 watts of electric power (13 watts receiver. The outputs from the command each for spacecraft systems and for experi- receivers are fed into three decoders for ments) while travelling in sunlight. The command execution. Output commands power requirement drops to seven watts dur- from the decoders actuate latching relays ing the orbital night. and transistor switches to execute the com- The 2016 solar cells on the sail section mands. are arranged in 36 parallel strings of 56 The system transmits data to earth in real cells each. The total cell surface area of 4 time while simultaneously recording the sq. ft. can produce a maximum power output same scientific data with an on -board tape of 38 watts. These cells provide electrical recorder. This recorder operates throughout energy to power the craft during sunlight the craft's orbital period, recording data at hours and to charge batteries used during the rate of 400 bits of digital information nighttime operations. per second. The prime battery pack consists of 42 re - Once during each orbit the system is (Continued on page 114)

11:,:1: THE SUN IN A DIFFERENT LIGHT Ultraviolet spectrometer (below) in 050 -IV is of primary importance. While in orbit, device is instructed by ground station to take thousands of corona pictures at various wavelengths. Mag- nesium -10 spectroheliogram (at left) is example of photo taken by UV spectrometer at wave- length of 625 angstroms. At this wavelength, a temperature plot of sun's corona can be made for temperatures of ,1.5 million degrees Kelvin. Only Magnesium-10 ions give off 625 -angstrom radiation at this particular temperature.

PHOTOMULTIPLIER

LIGHT ENTRANCE APERTURE ELECTRICAL HARNESS

WAVELENGTH SELECTOR PRIMAR Y MIRROR

1, 750 VOLT POWER SUPPLY

OPTICAL REFERENCE DIFFRACTION GRATING PHOTOTUBE 16, 000 lines per cm.

iwn:1wmw1w:

48 RADIO-TV EXPERIMENTER

www.americanradiohistory.com CB SKYHOOK mit sock! By Elmer Carlson Socket -2 -me, CB baby, with a whip that rises in seconds and stays up for months A low-cost, center -loaded R/C antenna makes a good CB skyhook for cliff dwell- ers and temporary installations anywhere. Field-tested on the outskirts of a big city's concrete jungle, this convenient whip belts out good signals from a near ground -level base station to any mobile unit over a four - mile area. Whether you're just anxious to get some use out of your newly -arrived license, or Mother Nature has leveled your roof -mount in one blustery blast, you'll find this whip can fill in better than you ever expected. There are no coax losses, mismatches, etc. All five watts (or whatever) pour right into the of radiator. R/C or CB? The beauty of this project is the convenience of a ready -to -go, center - loading coil antenna available from Lafay- ette Radio for $2.99, plus postage (by mail: 111 Jericho Tpke., Syosset, N.Y. 11791). Though advertised for R/C (radio control), it's good for frequencies in the CB band and will work fine. And those five watts certainly won't melt a tubular antenna; you need much more power for that: Even the center -loading coil will (Continued of erleaf)

49 f,U:U -T-`h-PTE'dBER. 1,963

www.americanradiohistory.com When drilling those two screw holes be CB SKYHOOK careful that you don't spray metal chips over the inside of the transceiver. Drill at a low stand up under the strain of CB transceiv- speed-even if you have to use the of egg- er power and will match all CB rigs. beater. The use of a slow drilling speed is especially important with tube -type trans- ceivers. High-speed drilling will cause more vibration, and there's a better chance of damaging delicate vacuum tubes. A little oil on the self -tapping screws will make it easier to set them in their holes. In the Middle. Alternatively, you can mount the whip right in the center of the transceiver cabinet. Doing so might give you a little better ground -plane effect, but you probably won't be able to notice the dif- ference. Then, too, it would also mean extra hardware. -

Center -loading whip extends to 54 in. Use length of stranded hookup wire for lead.

PARTS LIST FOR CB SKYHOOK 1-Center-loaded R/C antenna (Lafayette 99H9098 or equiv.)

1-13/8 x 1 3/4 -in. piece of perforated phenolic 1-Banana plug 1-Solder lug 2-1/2 x 6 Parker-Kalon binderhead sheetmetal screws 1 -12 -in. length of AWG -18 plastic -covered hookup wire 1 -1 -in. 6-36 roundhead machine screw (if not supplied with antenna) Misc.-Solder, wire, 1/4 -in. spacers (if needed), etc. Solder lug and wire are attached to whip from underside of phenolic. Phenolic is then screwed down on top of cabinet at rear. Three Plus Two. Believe it or not, you don't have to build anything. All you do is If you do decide to mount the antenna drill five holes-three in a scrap of phenolic in the center of the cabinet, you'll need a set (or any insulating material), and two in the of four I/4 -in. spacers to raise the phenolic rear edge of the top of the CB transceiver above the cabinet surface. Then the lug and cabinet. This set-up allows the antenna to the screw at the bottom end of the antenna be mounted just behind the cabinet rim. will clear the cabinet. (The author attached his unit to the rear of To connect the antenna to your rig, strip an Olson "Sidebander.") the ends of an 8- to 12 -in. length of hookup The holes drilled into the cabinet should wire. Solder one end to a solder lug and the be smaller than those drilled through the other to a banana plug. You don't need an perforated phenolic. As shown in our insulator on the shank end of the plug. photo, the perforated phenolic is attached That's just about it. How much quicker to the cabinet of transceiver with self -tap- can you get? All that's left is to mount the ping screws. This eliminates the need for whip on the cabinet of the CB transceiver, opening the cabinet. Sheet -metal screws have and get on the air. deeper threads and will hold better in the , So go to it, and don't be shy about using thin metal. this CB skyhook to get on the air-fast!

50 RADIO-TV EXPERIMENTER

www.americanradiohistory.com `hasilarZd...

...the DXer's dream that almost was By Don Jensen

On a warm May morning two years ago, a truckload of police constables forded a muddy river, seized a partially -built shortwave station, and claimed the tiny island on which it stood -Shasiland. But wherd is Shasiland? Ask that question of almost any DXer, and chances are you'll a tiny, get only a shrug and a blank stare in return. For Shasiland, would-be country ::n southern , is almost totally unknown. And this despite the fact that it came within a hairs -breadth of becoming the rarest DX target in the world! But for the vagaries of African politics, Shasiland today would be the home of a small but thriving missionary radio station. And it would be operated by a South African religious group called Christian Action by Radio in Africa, or CARA for short. CARA's adventures in Shasiland are really two tales in one- the story of how this strange little country came to be, and the story of a fledgling missionary society that nearly overcame overwhelming odcs to establish a voice in . (Continued overleaf)

AUGUST -SEPTEMBER, 1968 51

www.americanradiohistory.com G8hasilam d.:. AFRI C A ---.

DEM. REP. ) r ../ t SOUTH OF THE CONGO N t

UN. REP OF TANZANIA ATANGA

1 MALAWI \ W. ZAFIAIA.-.- ) -Q= /JQO

z ATLANTI C OCEAN

Map pinpoints location of Shasi Island: at junction of Shasi and Limpopo Rivers and between what are now Botswana, Rhodesia, and the Republic of . Not shown is W. B. Coetzer's farm, located on the Bechuanaland border, directly across from the island he tried to make into a country of his own. For an actual aerial view of Shasiland, see photo on p. 51.

Claiming The Unclaimed. The Shasi- offer was a jungld of huge twisted trees, land story begins many years ago, when monkey ropes, Malela palms, and under- W. B. Coetzer, a prosperous businessman growth. Its only residents were the hundreds who owned a farm on the border of the of different birds that chirped and shrieked British protectorate of Bechuanaland (now cacophonously. For years his claim went Botswana), made an interesting discovery. unnoticed and unchallenged. He learned that uninhabited Shasi Island, CARA Calling? Then CARA entered located at the confluence of the Shasi and thé picture. In 1961, five students and a Limpopo Rivers where Bechuanaland, Rho- Dutch Reformed Church minister had desia, and South Africa meet, was unclaimed founded Christian Action by Radio in Af- territory. rica. Their goal was to bring a Gospel mes- So, on July 1, 1952, Coetzer nailed a sign sage to Africa by radio. to a big tree on the 215 -acre island, .pro- In time, the society established recording claiming it a sovereign, independent state. studios in four nations. The stumbling block, As far as Coetzer was concerned, Shasiland however, was the lack of transmitting facili- was his. No one else seemed the least bit ties. A weekly half-hour broadcast over the interested in his little island. All it had to commercial Radio Clube de

52 RADIO-TV EXPERIMENTER

www.americanradiohistory.com Shasiland was born when Coetzer posted this Station's "power " was moved to Gaber- sign, proclaiming it an independent state. ones after police confiscated the transmitter.

proved inadequate. CARA wanted its. own framework of an old transmitter, John Gra- shortwave station, but permission to operate ham, a missionary -engineer, built the 1000 - could not be obtained from any country in watt shortwave station in the workshop of southern Africa. So Shasiland seemed to South Africa's Stellenbosch University. And offer the missionary group its best oppor- on May 5, 1966, Graham and his wife, Lor- tunity. raine, left Cape Town for Shasiland, the With the assistance of Coetzer's son, a transmitter and other vital parts loaded into medical missionary, an interview was 'ar- a 11/2 -ton truck and a station wagon. ranged with the island's owner at the Mt. After a 1300 -mile trip, the Grahams Nelson Hotel in Cape Town. The Reverend joined another missionary couple, Mr. and Steyn Fourie explained CARA's needs, Mrs. J. Foster, already on the island. A Coetzer, in turn, listened carefully, then mud -brick transmitter building had been par- agreed to the proposal to establish a station tially completed. Work was progressing rap- on Shasiland. His sign, he said, had been idly, and it looked as though CARA's long- posted on the island for ten years, the time awaited station would soon be on the air. necessary, according to international law, to CARA Going? Then the Bechuana- proclaim it a separatelndependent state. land authorities siepped in. On May 18, The first meeting was held in April, 1962, police constables crossed the shallow Shasi but it took CARA four years to raisethe River and seized the transmitter. By their funds needed for the project Using the action, they claimed Shasi Island as part of

In this rare photo, Shasiland's only (and one of the world's rarest) radio stations is shown under construction on Shasi Islard. But as later events show, it was never to be completed.

AUGUST -SEPTEMBER, 1968 53

www.americanradiohistory.com status is still unresolved. Coetzer has indi- cated he will take the matter to court. The Botswana and South African governments `chasilartd... are now discussing boundary questions and upon the outcome of these talks will depend Bechuanaland. And thereby ended the coun- the future of the island. try that might have been, the DXer's dream CARA applied to the new Botswana gov- that almost was. (Can you imagine tuning in ernment for a station license, but after a sometime during the wee hours and picking year of waiting, the answer was a firm no. up a transmission from an independent, 215 - Discouraged, CARA's governing board last acre island called Shasiland?) And thereby fall dissolved the group, turning its activities also ended Shasiland's very claim to be, to MEMA, the audio-visual branch of the Coetzer's 1952 notice that "Trespassers will Dutch Reformed Church. MEMA maintains be prosecuted. This island named Shasiland the original recording studios, producing re- is a sovereign, independent state, not part of ligious programs for the national Botswana the Union of South Africa, Bechuanaland, Radio and South Africa's Radio or Southern Bantu FM Rhodesia, and has been oc- network. cupied by me since 7 st July, 1952." now The whole operation was friendly enough. Graham heads the MEMA team in The police cordially issued a receipt for the Botswana's capital of Gaberones. And while transmitter, loaded it on their van, and religious broadcasts make up on 31/2 percent hauled it away. Not wishing to create a of .the R. Bantu schedule, surveys show them major incident, the organization admitted to be the second most popular feature, reach- guilt and the case was soon settled. The ing an audience of three million daily. government promised to return the trans- Though its work continues, CARA's mitter should CARA obtain permission to dream of its own shortwave station in Shasi- establish a legal station. land is over. And with it went DX listener's Two years later, however, -Shasiland's chances to log the country that almost was.

CARA hoped its broadcasts over R. Shasiland would reach listeners throughout southern Afri- ca. In foreground above: a Dutch Reformed Church in Botswana, situated in a typical town.

54 RADIO-TV EXPERIMENTER

www.americanradiohistory.com Housed in the sleeve of a ballpoint pen, this light -activated device stacks up as one of the simplest projects ever. It's so simple, in fact, that we call it our . .

By Ronald G. Hilke

Many's the time when an amateur photog- Once an SCR is in the conducting state, rapher needs additional lighting for flash it will continue to conduct until the anode photography. Thing is7 large additional ex- voltage is removed. In an electronic flash, penditures plus the complexity of intercon- this is accomplished automatically by the necting multiple electronic- flash units dis- flash tube discharging the main storage ca - courage most laymen. Fortunately, however, there is an easy way out. The ready availability of low-cost elec- tronic flash units is one happy side to the picture. This, plus development of a new semiconductor device called the LASCR (light activated silicon controlled rectifier) means that new avenues of multiple elec- tronic flash photography are now open to most every one. One such route is the photo- electric slave flash we're about to describe. It's so simple we call it our "No -Parts" Slave Flash. Three And A Lens. Fig. 1 shows the LASCR with its three electrical connections -the anode, cathode, and gate. Smack on top of the unit is the lens, which focuses the impinging light energy onto the semiconduc- Fig. 1. Looking for all the world like an tor junction. If the light energy is of suffi- ordinary, everyday transistor, the LASCR cient intensity, the switch junction conducts. differs in that it contains a lens on top.

AUGUST-SEPTE14BER, 1968 55

www.americanradiohistory.com SLAVE FLASH

pacitor phich provides voltage for the trig- ' gering circuits. The LASCR used for this project was ob- tained from Poly-Paks, Inc., Box 942, Lynn -- field, Mass. 01940. The device, called a, Photran, is available in vòltage ratings from 50 to 300 volts. Most electronic flash trig- gering levels are in the 200-volt range, so to provide a healthy safety factor a 300 -volt device was selected; price is $2.95. Fig. 4. Completed Slave, ready for use with most any electronic flash unit. However, plug J/./ TO on cable must match connector on flash. ELECTRONIC LASCR FLASH joints; care should be taken to not overheat RI the LASCR by conduction of heat up 56K CONNECTOR through the leads. Overheating may be pre- a vented by clamping the jaws of a needle -nose LASCR plier on the LASCR lead between the sol- BOTTOM VIEW dered connection and the LASCR dùring the soldering operation. Fig. 2. Schematic of "No -Parts" Slave Flash. Positive Anode. The electrical hookup Author used LASCR supplied by Poly-Paks, to the flash unit requires that a positive volt,- Inc.; see text above for additional information. age exist on the anode of the LASCR. This Simplicity Plus. Fig. 2 is a schematic can be verified with a voltmeter, or by hook- of the electrical hookup and a drawing show- ing up the trigger unit and attempting to ing the relative placement of the LASCR trigger the flash by beaming light from a anode, cathode, and gate leads. Since gate flashlight into the LASCR lens. If the flash current is extremely small, the wattage rat- doesn't trigger, reverse the interconnecting ing of the 56k gate resistor is noncritical and cord connections. (No damage to the can be any value from 1/a watt on up. LASCR will occur because of the reversed Fig. 3 shows the wiring of the slave trig- polarity.) ger unit prior to insertion into the plastic Once the unit is operating properly you end of a ballpoint pen. The plastic tube can complete assembly. Simply insert the has been halved by means of a hacksaw to works into the plastic tube and cement the aid in assembly. If the end of the plastic case of the LASCR to the front of the tube. tube is large enough to accommodate the The output cable should be cemented to the body of the LASCR, this step won't be nec- rear of the tube to prevent twisting the cable essary. and possibly damaging the- internal assem- A length of spaghetti has been placed over bly. The finished unit is shown in Fig. 4. the LASCR anode and cathode leads to pre- Add. A Plug. Several types of connectors clude shorting. However, if spaghetti isn't can be usefl at the end of the output cable. available, electrical tape or even masking A standard. female P -C type connector mates tape will suffice. All leads are soldered at (Continued on page 109)

SPAGHETTI OVER LEADS

RH

LASCR

Fig. 3. View of "Nd -Parts" Slave Flash be-

fore reassembly of ballpoint pen. As ex- BALL POINT PEN plained in text, spaghetti must be placed (SAWED IN TNO) over two LASCR leads to prevent shorting.

56 RADIO-TV EXPERIMENTER www.americanradiohistory.com WANNA JOIN A DX CLUB? Most every DXer does. Question is, why do they wait so long? By the Editors of RADIO-TV EXPERIMENTER

There's no doubt about it, hams seem to The following groups are all affiliates of have more fun. They're constantly talking the Association of North American Radio about their equipment, problems, and fami- Clubs (ANARC is a super -organization of lies in a never-ending world of chit-chat and DX clubs dedicated to maintaining standards fellowship-a far cry, indeed, from the among members and furthering DX activi- SWL condemned to a lonely existence be- ties). These clubs have members spread hind the controls, with only a log book for far and wide throughout the Western Hemi- company. sphere. Though there are certainly other But all this needn't be so. Whether your clubs for the DXer, the eleven listed here are main interest is SWLing, BCB, or ham -band known to have a wide range of activities and operations, the following radio clubs offer proven reliability over past years. everyone a chance to get in on the DX Whatever your interest, you should find action. the one just right for you-there are no The mainstay of each organization is a boundaries with regard to nationality, age, club bulletin. Here the enthusiast will find or occupation. So good luck, and good hunt- gobs of information and news put together ing. by people who really know their field. And featured columns offer members an oppor- AMERICAN SWL CLUB (ASWLC), tunity to contribute material based on their 16182 Ballad La., Huntington, Beach, major interests. These bulletins are obviously Calif. 92647. SWBC Editor, C.M. Stan - one of the best ways to stay up-to-date on bury II. This club specializes in SWBC latest happenings in the BC bands. coverage and foreign BCB DX. Its month- No Long Shots. Before joining a club, ly publication SWL averages 25 pages and every SWL wants to know which one gives has a Utility and Cardswap column. Dues more for the money, and how the various are $4.00 yearly. clubs differ in what they offer. There are many clubs in the U.S. and CANADIAN DX CLUB (CDXC), 311 Canada-both large and sma;l-and each W. 14th St., Riviera Beach, Fla. 33404. must be judged on its own merits. The longer President, Ralph J. Irace, Jr. Club's a club has been in existence, the more be- monthly publication called Cadex, and it lievable is its promotion material. (Continued oat page 113)

AUGUST -SEPTEMBER, 1968 57

www.americanradiohistory.com Paul Kilborn looked up from his latest copy of Playboy and out through the screen of his porch, 300 feet up the side of a West Vir- ginia mountain. In the val- ley, lights were flasjiing oh, DID first in the office building,. then in the equipment sheds of the big Green Bank ob- servatory. Paul stepped quickly inside and dialed the main office. YOU "What's going on down there?" "We're not sure, sir." It was tracking the star Tau was one of the new techni- Ceti, eleven light years from cians assigned to the Na- Earth. But Paul knew to tional Observatory since its expect surprises. He had HEAR 1967 expansion. "We don't helped to redesign the big know what it is, but we're radio telescope with a new getting a signal. A pattern." narrow beam antenna and The Playboy still in his low noise receiv&rs that hand, Paul headed for the might pick up almost any- station wagon standing in thing. He found Dr. Gerard TE the driveway, its engine still in the computer analysis warm. Project Sensor was room, wrist deep in readout less than twenty hours old, sheets and frowning. and already the false alarms were starting. What would it be this time: a ham oper- STAR ator, trespassing on the ra- dio-restricted zone? A dis- tant thunderstorm? A stray transmission from an airline flight? Theoretically, the antenna

By Alan C. Van Dine

58 RADIO-TV EXPERIMENTER

www.americanradiohistory.com "Any inkling, Jake?" sembles this. We played it sign of intelligence in deep "None," said the project for the Navy hotshots at space? Paul and Dr. Gerard director, "except that it's too Sugar Grove, and they can't decided to. check it out. good to be true." identify it either." They steered the antenna off Paul looked at the pulse Paul squinted at the azi- the star. pattern, traced out on long muth and elevation dials. The signal stopped. For grid sheets. "Muih too "We can't have drifted off a full minute, not a word good," he agreed. "It looks Tau Ceti." a passed. Pointlessly, Gerard almost like a musical score." "Not a chance. She's walked to the visual tele- "Right," Gerard said. tracking that star steady as scope and peered through, "The Tau Ceti Toccata and a rock. But this signal is as if to look at the distant Fugue. Only it will turn out much too strong to be com- radio transmitter that had to be a jamboree from some ing from the star. Another just materialized in the mind jerkwater radio station with thing-look at this frequen- of everyone in the room. a faulty transmitter. cy analysis. The rhythmic "It can't be," he muttered. Wouldn't that look good in signal is superimposed over "It just can't be."

the newspapers? Scientists the random noise we were "Maybe not," Paul said, find intelligent life in West getting from Tau Ceti. Fig- "but it's what we're here to VirginiaP' ure that out." find." Paul glanced at another By 3:30 the Sensor team "It's too distinct," Gerard sheet, then another. More had exhausted every plausi- insisted. "The signal is sim- of the same. "When did it ble radio source anyone ply too strong. Where would start, Jake?" could suggest. No malfunc- they get that kind of Gerard checked the timing tions apparent. No stray power?" blips. "Zero one thirteen, transmissions from outside "And too complicated," and it's still repeating. I the valley. But the signal Paul added. "Like a mel- thought we might have some continued: a repeating pat- ody, or a series of equations. weird oscillation in the fre- tern of four sequences that If they were putting out a quency analyzer, but all cir- defied all attempts at de- beacon signal, it would be cuits check perfectly. The coding. Could it be coming something simple and basic, interference analysis crew from the Tau Ceti solar sys- like two plus two equals can't find a thing that re- tem after all? The first real four." (Continued overleaf)

AUGUST -SEPTEMBER, 1968 59

www.americanradiohistory.com "Right," said Gerard, "except that not Hear That even in our most imaginative blundering Star? could we accidentally program our com- puters to write poetry." Gerard nodded. "Let's try it again." "No, no ... not program. But we have "Wait a minute," Paul said. "Let's try an- hooked the antenna into so much redundant other target instead." The vague beginnings circuitry that the damn thing could prac- of an idea were assembling in his mind, but tically talk to itself. And the antenna can it was too far fetched, and he was too tired eavesdrop on stimuli that we 'haven't even ... he turned his attention back to the an- discovered. That's what it's for, isn't it?" tenna controls. "Okay, okay." Gerard was apparently When a second star was zeroed in, the tiring of the game. "Sejsitivity, brains, and signal resumed-the same pattern-and now a celestial viewpoint. It all adds up to a poet. all attempts at explanation were in ruins. A 15 -acre, 203 million dollar federal poet. How could two solar systems, light years Go to sleep!" apart, bé beaming the same message? Gerard Pauk shrugged. Sleep, to be sure, was the called a break for coffee and rest. only solution, and he could finally feel it Paul, who had been awake for nearly 24 coming. But Gerard up suddenly, grin- hours when the signal began, now found that ning. he couldn't sleep. Lying on the couch in "I just realized something," he said. "We Gerard's office, he reopened his Playboy and have a whole roomful of eager young as- thumbed through it. tronomers, physicists, and mathematicians Gerard, leaning far back in his swivel downstairs without a thing to do. Paul, can chair, reached for his cigarettes, started to you think of a more gullible group in all offer one to Paul, then noticed the magazine. this world than astronomers, physicists, and "Tell me," he said. "Why is it that every mathematicians?" time I'm up to my eyelashes in trouble, I find "Not offhand." that my top assistant has buried himself in Gerard reached for the phone. "Well, some girlie mag." since you have come up with the original "It's envy," Paul said. "A lover looks at hypothesis of the night, I suggest we unleash a star, and it reminds him of peace, wisdom, all that Ivy League tuition on testing it. It and. womanhood, which reminds him of his might be just what we need to get some of girl. So he tells the star how nice his girl is, those high-priced brains in motion." and he tells the girl how nice the star is. We A half-awake Princeton mathematician look at a star and promptly get hung up on named Pitts was Gerard's choice as project electromagnetic frequency analysis. I'd chief for the exercise. The young man stared rather be a lover." uncertainly through hanging strands of hair "I may cry," Gerard said. "And you, if as his boss explained the assignment. you happen to get around to it, might try "This is right down your alley, Pitts. Be- saying something even half that smart about sides, I've always admired your beard. I radio transmissions from the direction of want you to have everyone who's awake take Tau Ceti." another crack at decoding the signal pattern, "Oh, that. Well you see, if we were lovers but with two arbitrary assumptions: first, and poets, the whole thing would be quite that it translates to meaningful English; simple. We would know immediately that second, that it follows a regular meter, like our friend is writing poetry." poetry."

"Which friend? Tau Ceti?" "Dr. Gerard, may I point out . . ." Paul hesitated. "No, not the star. The "Pitts," Gerard interrupted, "you are far antenna. It has noticed its first celestial ob- too bright to go walking around a place like ject and reacted like most of our new equip- this with a closed mind." ment reacts-temperamentally." Pitts left. Paul finally slept, but Gerard Gerard grunted. shook him just before sunrise to say that he "Think about it," Paul said. "We have had called Pitts to come back and discuss put 203 million dollars worth of sharpened his progress. perception into this thing, haven't we? And "You could have gone down to the con- we have it so cross -rigged with computers trol room, you know," Paul yawned. "Sup- that we're not even sure we've isolated all of plied some encouragement, a few sugges- the functions. Right?" tions." (Continued on page 108)

60 RADIO-TV EXPERIMENTER www.americanradiohistory.com SOMEONE SHOULD DEVELOP AN EASY WAY

TO LEARN ELECTRONICS AT HOME

RCA INSTITUTES DID!

RCA Introduces new CAREER PROGRAMS CHOOSE A CAREER PROGRAM NOW right in your own home! You build a work- -beginning with the student -proved your first step to the job of your choice! ing signal generator, AM Receiver, Multi- "AUTOTEXT" Programmed Instruction Television Servicing meter, Oscilloscope, and other valuable Method-the faster, easier way to learn. Telecommunications equipment-ALL AS A PART OF YOUR Get the facts today! You start to learn the field of your choice FCC License Preparation COURSE! Training Also Available. Day immediately. No previous training or ex- Automation Electronics Classroom Classes are available to you perience needed. Automatic Controls and Evening in New York City at RCA Institutes Resi- Digital Techniques dent School. You may be admitted with- Pick the career of your choice-and RCA Industrial Electronics any previous technical training; prep Institutes will do the rest! RCA's new, rev- Nuclear Instrumentation out courses are available if you haven't com- olutionary "Career Programs" help you go Solid State Electronics pleted high school. Coeducational classes directly to the cáreer you want! You waste Electronics Drafting no time learning things you'll never use start four times a year. RCA INSTITUTES BONUS EXTRAS on your job! Each Career Program is de- SEND ATTACHED CARD TODAY FOR Only RCA Institutes offers you a Liberal FREE DESCRIPTIVE BOOK signed to get you into the kind of job you Tuition Man, ene of the most economical All courses and programs approved want in the fastest, easiest possible way! for veterans under new G.I. Bill. ways to learn. Plus, you get top quality Canadians: These same RCA courses equipment in all kits furnished to you with to you in Canada. No SEPARATE COURSES are available your courses-yours to keep and use on postage. No customs. No delay. Your In addition, in order to meet specific the job. And now. RCA's NEW PRO- inquiry will be referred to our school needs, RCA Institutes offers a wide variety in Canada. GRAMMED ELECTRONIC BREADBOARD RCA INSTITUTES, INC. Dep't. RX-88 of separate courses which may be taken GIVES YOU LIMITLESS EXPERIMENTA- 320 West 31 Street, Pro- independently of the above Career TION - scientific laboratory procedures New York, N.Y. 10001 grams, on all subjects from Electronics Fundamentals to Computer Programming. Complete information about these courses Accredited Member National Home Study Council will be sent with your other materials. ncn AUGUST -SEPTEMBER, 1968 63

www.americanradiohistory.com A Along comes a man called Peta with an ngenious utilization of the video tape re- corder. He trains it on the ladies in his golden grotto of a beauty salon and lets them see themselves in action with differ- ent hair styles and hairpieces. Then, if they wish, the tape can be filed. And if, in a few months, a lady would like, say, an Anniversary hairdo, all the details are there to be replayed. Peta visualizes chic ladies in the future using their home video tape recorders this way-so if you say to your wife "Why can't you do your hair the way you had it at the big dance?"-she can! Mean- time, send your Fair One to Peta's (just off New York's 5th Avenue) for a multi- dimensional consultation (a mere $10) and a starring role in her own production -"Crowning Glory." -H. Arliss Bell

RADIO-TV EXPERIMENTER www.americanradiohistory.com Roll 'em first, and rollers next is the order of the day in Peta's salon, where he is casting director, cameraman, coiffeur (and most likely confidant). The lady acts out a short, curly part.

Svengali and Trilby? Maybe, but updated with the electronic assistance of a video tape recorder.

If the FBI can keep your fingerprints and the hospital your X-rays, why not a file on Milady's hairdos in motion?

The name of Peta's shop is Special Occasions, but you

don't need one to fall in and nemeslie star in a production of yourself with ringlets, fall, postiche, frosting. The guys don't have to memorize all these terms, but they'll know what they like when they see the whole scene on camera.

Something to go with a frilly midi? Zeé Great Peta will help you decide with his really mod, on -the - spot canned video.

AUGUST -SEPTEMBER, 1968 65

www.americanradiohistory.com instant me! Continued from previous page

A long time ago, when a lady sat tor her portrait, she wasn't allowed to move. Now she can really see herself as others see her with the video tape recorder.

Professor Peta points out how a hair- piece can make on instantly more appealing YOU. And if you forget the effect, you can play it back next year.

In the can with your low -budget, coiffing-by-video production-working title, "Instant Me!"

66 RADIO-TV F.RPERIMIENTER

www.americanradiohistory.com power rowd Getter

One transistor radio plus this IC booster spell more bark in the beat

By Herb Friedman, W2ZLF/KBI9457

Pocket radios are everywhere. You get fit the larger battery into the speaker cabinet. AM, FM, even SW coverage anywhere you Both the IC -amplifier and the battery wander. And the little box fits lickety-split mount on the back panel of the speaker into pocket, purse, beach bag, picnic basket, cabinet, making the Crowd Getter as port- or what have you. able as your transistor radio. In fact, you to Trouble is, while transistor radios are 'get- might even consider attaching a handle ting smaller and smaller, the sound is often the cabinet. not what it should be. The mini levels pro- To use 'the Crowd Getter, simply connect vided by these transistor units are fine for a cord from the radio's earphone jack- small rooms and private listening. But try thereby disabling the speaker-to phono jack making the scene with the group, and you'll 71. Volume must be controlled by the radio's find they're just too pooped to pop. volume control, since no control has been Take on our Crowd Getter, however, and included in the amplifier. you can bet your surf parties will zoom like Building The Bomb. While connections, never before. This amplifier/speaker combo can be made directly to Q1's leads via flea - will raise any transistor's whisper to an ear - clip terminals, to avoid excessive heat from shattering blast that'll gather all the bees to soldering, we suggest you use a transistor the and make your party the success socket as shown. Note that though Q1 has it should be. 12 leads, a 10 -pin socket is used. A 12 -pin Only One IC. The Crowd Getter is a socket is not only difficult to obtain, it is also complete booster amplifier housed in a com- expensive. On the other hand, a low-cost mercially made remote -speaker cabinet (the 10 -pin socket is available in Motorola's HEP speaker comes with the cabinet). The am- line of components. And if you follow our plifier consists of a single IC (integrated cir- layout, construction will actually be easier cuit) which contains the preamp, driver, and using the 10 -pin socket. power -output stages. The amplifier shown First step is to remove the back cover of in our photos is powered by a 6-volt battery the speaker enclosure and unsolder the J1 which provides about a 1/2 -watt output- speaker wires connected to phono jack roughly equivalent to an old vacuum -tube on the cover. Next, assemble the amplifier table radio at full volume. If you substitute on a section of perf-board measuring ap- -in a 9 -volt battery the sound will be substan- proximately 2 x 3 in. Flea -clips or push tially louder, though it might be difficult to terminals are tie points. (Turn page)

67 AUGUST -SEPTEMBER, 1968

www.americanradiohistory.com exactly one-half the total length of the re- maining Q1 leads. Place the socket in the Hi -Power perf-board hole, then insert Q1 into the Crowd Getter socket. .. The Ql lead directly opposite the case's Drill a 5/16 -in. hole for Ql's socket about key is 12. Looking at the bottom of QI, the 11/4 in. from one end of the perf-board. Note lead next to 12 in a clockwise direction is 1. that the socket is keyed with a small point; On the socket, the pin opposite the key is 10. the key should face the closer end of the The next pin in a clockwise direction is 1.

eeee,

PARTS LIST FOR CROWD GETTER

BI -6 -volt battery (Burgess Z4 or equiv.) C1-.1-uF, 10-VDC capacitor C2-.01-uF, 10-VDC capacitor C3-.22- or .25-uF, 10-VDC capacitor J1-Phono jack (supplied with speaker) Q1-Integrated circuit (RCA CA3020) R1-0.82- or 1 -ohm, 1/2 -watt resistor R2 -1000 -ohm, 1/2 -watt resistor S1-Spst toggle switch SP1-Speaker in enclosure (Lafayette 99H4550 or equiv./ TI-Output transformer, 8 ohms (Lafayette 33H8571 or equiv.) Misc.-Battery holder (Keystone #175 or equiv.), 10 -pin socket for Ql (Motorola), phono plug, plug for earphone jack, patch cord, perf-board, push -in terminals, wire, solder, hardware, etc. Note-A kit (#1C-51 I Integrated circuit is from RCA. While IC has containing the CA3020 and 10 -pin socket is available 12 leads, a 10 -pin socket is used for economy. from Custom Components, Box 352, Alden Manor, El Leads 11 and 12 are bent out from case, - mont, N.Y. 11003. Price is $4.50, includ- so remaining leads align with socket terminals. ing postage and handling.

dxxxxxeexeexrmmrmxxmrrmrrmxxxeexmxxxmrrrrxrmmxxxeeeexxxxmxeemxmxeeeexxxmeerrmreeeerrmmxxxxxxxmxxeexeemmxxxmeemxeeree mnrrxnmxinrrnxxinxxnxxxxxxeexrxxxxxnxxxxeexxmeerxeerinrreerrrrrxxnxnxxxineenxnninnrxxnnrinxnximnxrrnneexeexF

perf-board. Bend leads 11 and 12 of Q1 This might sound somewhat complicated, but straight out from the case-at right angles it's not. When Ql's 10 lead is lined up with to all the other leads. Make certain leads 11 the socket's 10 pin, all of Q1's leads will fall and 12 don't touch Ql's case. Now cut off into line. Just take an extra moment or so

Cl T1

SPKR R1 SOCKET TERMINALS R2 PIN 11 01 Most components mount on top of perf-board 02 (IC) and R2 are mounted on bottom of and should be tack -soldered to Q1 's socket. perf-board assembly. Leads 11 and 12 of Do not attempt to wrap the leads as a socket Q1 are brought out at right angles to case. terminal might become shorted. Leads 1 to They are about 1/2 in. long in order to pre- 10 of 01 are cut to about half length. vent heat damage to unit while soldering.

68 RADIO-TV EXPERIMENTER

www.americanradiohistory.com to check Ql's installation, because you won't St get a second chance if you make an error. Press Q1 down firmly into the socket, then cement the socket to the perf-board using ordinary hobby or household cement. Don't cement the socket before Q1 is installed, for just a drop of cement in a pin will make the socket useless. Mount transformer Tl on the socket terminal side of the board, as shown in patch cord between tran- photo. Position Ti about 1 to 11/2 in. from Connect shielded Ql, then install the remaining components. sistor radio's earphone jack and J1. Si turns on power, but volume is controlled by radio. All connections to Ql's socket are tack - soldered; don't try to wrap wires around the socket's terminals. . A heat sink is not needed for a 6 -volt power Installation. Install the amplifier on the source. back cover so the input terminals are in line To,finish up, connect the speaker wires to with phono jack J1. To avoid crushing Q1 Ti's secondary terminals, route the leads on the underside of the perf-board, use a 1/2 - away from the, amplifier's input connections, or 3/4 -in. spacer between the amplifier and then install the speaker enclosure's back the cover at each mounting screw. cover. Your Crowd Getter is now ready Install power switch S1 near the amplifier. for use. It can be installed in any of the 3/4 -in. holes A Final Note. Make up a patch cord pre -drilled in the cover. Finally, install bat - with a phono plug on one end and a plug

Amplifier, power switch (SI), and battery holder are mounted on back cover of speaker enclosure. Phono jack (J1) is supplied with speaker. Make sure perf- board is mounted on cover with either 1/2- or 3/4 -in. spacers so that case of Q1 will not be damaged.

B1 Si AMP J1

tery holder for B1. Though B1 is a 6 -volt on the other that matches the earphone jack battery, it will fit a standard D -cell holder of the transistor radio. Then connect the such as the Keytone #175. For ' slightly radio. Turn on the amplifier and turn on higher power output a 9-volt battery can be radio. Adjust the radio's volume control for substituted, though it must be rated for at the desired level. Do not turn on the radio least 100 mA. Don't use a transistor radio first and then patch it into the booster, as 9 -volt battery like the 2U6. The 2U6 won't the Crowd Getter requires only a very mi- last more than a couple of hours. nute input level (patching in the radio when Warning. QI's supply voltage must not the volume is up might damage Q1). exceed 9 volts. To avoid damage, mount a So there you are. Have fun, and good heat sink on Q1 when using a 9 -volt battery. listening!

AUGUST -SEPTEMBER, 1968 69

www.americanradiohistory.com 1MAGi1'VEER11`IG

GOING AROUND STEADY Next time a kit manual tells yoù to twist lengths of red and black wires into a twisted pair, here's what you do! Secure an eye hook or a hooked nail in your drill's chuck. Tie the wires to the hook, and clamp the other ends in a vise. Zap the drill's switch trigger for a short blast and watch the twisted pair form. Lengths up to 10 feet can be paired. -Al Wise

PLUG WITH FORKED TONGUE Polarize your hi-fi and test gear to be sure they're properly grounded. The ground slot on an AC outlet is wider than the other, so make the ground prong on the line cord plug wider, too! Just snip the ground prong with a heavy- duty cutter as shown-the prong will spread. But, be sure you have the ground prong before you snip! -L. Grant

COLOR CODE YOUR TRANSISTORS A few drops of dope will let you identify tran- sistors as you do resistors-the color code is the same. Use hobby -type dope or quick -dry en- amel on the transistor case. A red dot on top means "2N". The next 3 or 4 colors give the numbers that follow the 2N prefix, like 2N1177. -J. Lamb

DOWN WITH FINGER POKING

One sure way to destroy a loudspeaker is to poke a hole through it. An easy way to prevent this type of cone damage is to place a metal screen between the speaker and grille cloth. Be- sides adding protection for the delicate speaker cone, the added steel or aluminum screen will prevent unsightly pushed -in or torn grille ` SCREEN GRILLE CLOTH cloths. -Jack Kiser

Send your Imagineering Design Tips with full details and a photo or drawing to Radio-TV Ex- perimenter, 229 Park Ave. South, New York, N.Y. 10003. The top ideas selected by the editors will win $10.00. Entries become the property of Radio-TV Experimenter and can't be returned.

70 RADIO-TV EXPERIMENTER

www.americanradiohistory.com SNACK PACK

COMMANDER

By Chris Stevens

Build this take -command PA system and watch 'em sit up and listen

D Here's a lunchbox public address system that takes the strain off your vocal cords. And it also makes for a radio Merit Badge project that'll help any junior leader be the envy of his troop. This PA system has a self-contained bat- tery for all-around use, but an AC power supply can be included to conserve or re- juvenate the battery. For occasional use you can get by with just the 6 -volt lantern bat- tery. But if you're planning a lot of work indoors, you'll save money if you get the power supply, too. The Snack Pack Commander won't rattle windows a half -mile away, but you'll be able to talk to people 20 or 30 feet distant. If you want more volume you'll need a higher -

Snack Pack uses two Eicocraft kits. Both the EC -900 solid-state AC power supply and EC - 300 solid-state audio power amplifier are available in blister packages from EICO (see Parts List) or from your local jobber.

AUGUST -SEPTEMBER, 1968 71

www.americanradiohistory.com PARTS LIST FOR SNACK PACK SNACK PACK COMMANDER B1 -6 -volt battery (Eveready 509 or equiv.) -see text

output mike or a 1 -transistor preamp. J1-Miniature microphone connector (Amphe- A sturdy case can be made from a metal nol 75-PC1M or equiv.) lunchbox, and the metal is thin enough to be P1-AC line cord (with plug) worked with tin snips and an ice pick or awl. S1. -Spst toggle switch Saving Space. To eliminate need for a 1-Eicocraft EC -300 amplifier kit matching transformer, a low -impedance mike is used. For a smaller package, you can use 1-Eicocraft EC -900 power supply kit (op- a mike cartridge without a case. Just wire tional) leads to cartridge and mount it in a small 1-Remote auto speaker kit (speaker, grille, plastic box. However, there's more than and template) enough room for a full-sized nit. Misc.-Metal lunchbox, low -impedance micro- Before mounting any parts on PC board. phone and cable (Lafayette 99H4577 or place it in its approximate position in the equiv.), hardware, wire, solder, etc. lunchbox and use the board's mounting holes as a template for marking mounting holes on Eicocraft kits are available from EICO Elec- the sides. When the amplifier kit (and power tronic Instrument Co., 283 Malta St., Brooklyn, supply, if used) is completed, set it aside and complete work on the lunchbox. N.Y. 11207, or from your local dealer.

Everything you need for construction is included in kits-PC boards, transistors, capacitors, resistors, and even hardware for mounting boards in lunchbox. Your work will go easier if you lay out components before assembly. But do only one kit at a time.

Above right, speaker template is first used to mark speaker opening in lunchbox bottom. Scratch in outline with ice pick or awl, then punch in mounting holes by pressing point of tool through template and into metal.

At right, hole for speaker is started with heavy -bladed knife, then tin snips finish job. Watch out for sharp edges of metal cutout! Holes for mounting screws must be enlarged to accommodate machine screws furnished with speaker kit.

72 RADIO-TV EXPERIMENTE*

www.americanradiohistory.com If you're lucky, the remote speaker kit will have a template the same shape as the cone of the speaker. This can be used to mark the speaker cutout. The template can then he placed inside the box to reduce the tinny sound that often occurs when metal boxes are used for speaker enclosures. If the speaker kit doesn't have a suitable template you can make one quite easily from a piece of soft corrugated cardboard. Just press the speaker face -down into the card- board and run a pencil around the outline of the speaker. Also mark the positions of the mounting holes. A strip of masking tape will hold the template in place. Power to Spare. If you can't obtain the lantern battery, substitute four D -cells. The lantern battery, however, will give longer With connections used here, switch doesn't service. For an extended trip, try to get control operation of amplifier when power heavy-duty alkaline D -cells. They have more supply is used-it only turns battery on or than four times the current rating of a simi- off. But other connections are possible. lar -size cell.

Above, the 4 x 6 -in. speaker, matching metal grille, and speaker template are part of kit for installing a remote speaker in car. Mounting hardware should be included. Low- priced kit will work fine, but make sure that speaker and grille are not too large for box.

Above left, use short wires to connect on/off switch and mike connector to PC boards. Add leads for battery and speaker (and power supply, if used) as shown. If possible, do all soldering before mounting boards. At left, completely packed unit is teady to go. Lantern battery is held in place by speaker magnet and transformer; roll of packing material protects PC board and helps secure mike. For rough travel, battery can be mounted to case with strap and screws.

73 AUGUST -SEPTEMBER, 1968

www.americanradiohistory.com By C. M. Stanbury II Propagation Forecast

With this issue we have added two new rarest of DX, conditions for the novice or abbreviations to our forecast table -w those SWLs using very simple equipment (Western ) and e (Eastern will be excellent, generally speaking. Be- North America). If one of these letters fol- cause of the high current sunspot count, lows a listing, it means the band is only those super powered transmitters beamed good for that part of the continent. For our way should provide consistent reception. example, under Asia at 1500-1800 listener's This is especially true on 25 and 19 meters time we have listed as a promising second where static is seldom a problem. choice "60w," which means a DX opening For all you who did a double take at our may occur on this band to Asia, but west of "SW Peak Listening Periods" table which ac- the Mississippi only. Incidentally, this par- companied the April/May Propagation ticular band opening may not occur more Forecast, you're right, there was a misprint. than three or four days out of the whole The listing for reception of Asia on the two month period. But when it does, the West Coast should have read 1800-0900 band produces spectacular results, so it's PST, not 1800-2100. This corrected, along worth while monitoring. with the rest of those peak periods listed, Turning our attention away from the very still holds true.

RADIO-TV EXPERIMENTER PROPAGATION FORECAST

EUROPE, Aug./Sept, 1968 NEAR EAST LISTENER'S ASIA & AFRICA AFRICA STANDARD (except (N. of the (S. of the SOUTH LATIN TIME Near East) Sahara) Sahara) PACIFIC AMERICA

0000-0300 25, 31 31, 41 41, 49, (60e) 41 49, 60

0300.0600 (25), 31, (41), 49 31 Nil, (19w) 41, 49, 60 49, 60

0600.0900 (16), 19, 25, (31) 16, 19 19, (60w) 31 31, 49

0900-1200 19, 25 16,19 13,16,19 25 25

1200.1500 (16), 19 16,19 13, 16, 19 19 (poor) 19 & 25 (poor)

1500.1800 19, 31, (60w) 19, 25 25, 31, (60e) 19 31

1800-2100 16, 19 25, 31 25,31,(90),(120) 16, 19 49, 60, 90

2100.2400 16,19 25, 31 41, 60, (120e) 19, 25, (41w) 49, 60, 90

To use the table put your finger on the region you want to hear and log, move your finger down until it is alongside the local standard time at which you will be listening and lift your finger. Underneath your pointing digit will be the shortwave band or bands that will give the best DX results. The time in the above propagation prediction table is given in standard time at the listener's location which effectively compen- sates for differences in propagation characteristics between the East and West Coasts of North America. However, Asia and the South Pacific stations will generally be received stronger in the West while Europe and Africa will be easier to tune on the East Coast. The shortwave bands in brackets are given as second chokes. Refer to White's Radio Log for World -Wide Shortwave Broadcast Stations list.

74 RADIo-TV EXPERIMENTER

www.americanradiohistory.com RadloTV EXPERIMENTER L]CHECK

frequency-sort of like w000-eee-000? Ac- tually, the horn generated a constant -fre- quency sound. But since the train or truck was speeding as the horn sounded, the sound waves were stretched, or compressed by the simultaneous motion of the vehicle. Let's imagine that the vehicle's horn is coming straight at you and that the horn normally produces imaginary sound waves two feet apart. Since the vehicle is moving EUPHONICS TYPE Al right along with the sound waves, it com- presses the waves so they are only one foot Doppler Effect apart; this makes the effective pitch of the higher. But once the vehicle passes you Intrusion Alarm horn it stretches the sound waves away from you and the imaginary waves are now four feet apart. The total effect at your location as The real wonder of the transistor is that the vehicle moves past is an increase and it gives us low-cost, consumer -grade equip- then a decrease in the pitch of the horn. ment of the type once found only in high- Got the picture? Okay, let's imagine a priced industrial equipment. Take, for setup. On the left side is an oscillator/trans- example, the Euphonics Intrusion Alarm, a ducer which is emitting a steady 30 -kHz device which floods an area with inaudible tone. At the right is a receiver which is very ultrasonic sound, then uses the reflected sharply tuned to 29 kHz. Normally, the re- sound to determine if a trespasser is about. ceiver cannot "hear" the 30 -kHz tone, so it Until recently, an ultrasonic silent watch- has no output (in our example, the receiver man was built with tubes. Such units were will activate an alarm bell when it "hears" expensive-upwards of $300, and, they were a tone). large. And while many department stores Now let's assume that someone moves into still protect their camera departments with the sound field. The person's motion will silent -watchman radiators or globes placed compress and expand the reflected sound about 20 feet apart, they're far from ideal. waves, and at some instant the receiver will Even the store watchman must keep away sense a 29 -kHz signal. The receiver is now from the area, for if heenters the sound field activated and produces a DC output voltage, he'll likely end up looking for a new job. which in turn trips a latching relay that turns Because of the silent watchman's high on the alarm. price, the home owner or small shopkeeper In practice, commercial intrusion alarms who wanted full protectidn was relegated to use a more complicated circuit which ensures a wired burglar alarm. With this setup, win- sensitive sensing without a tendency toward dows and dóors were protected by a string false tripping. Still, the arrangement just of series -connected wires. But now, thanks outlined works quite well. to transistorization, a silent watchman-the Bounce Pounce. The Euphonics Intrusion Euphonics Intrusion Alarm-is available at Alarm operates on the same principle as our budget prices (under $100.00). simplified alarm we discussed. Built into Doppler Again. In actual operation, the a small (11 x 21/2 x 10 in.) case is the trans- Intrusion Alarm works on the Doppler mitter (oscillator/transducer), the receiver, Effect, which is the same thing the fuzz uses and time-delay control circuits. On one end to nail speeders with "radar." The Doppler of the cabinet is the transmitter's transducer, Effect, is a rather simple thing to understand which beams the ultrasonic sound field into if you can recall the last time you heard the the room or area to be protected. On the horn from a speeding train or truck. Re- other end of the cabinet is the receiving member how the sound seemed to change in transducer, which picks up the ultrasonic

AUGUST -SEPTEMBER, 1968 75

www.americanradiohistory.com time the 117 -VAC alarm bell outlet is acti- vated. The purpose of the delay is to allow _L 3 CHECK the user to turn off the alarm before the bell sounds off, if so desired. sound that is bounced back from hard sur- With the slide switch set to alarm hold, faces in the room or protected area. both the lights and the alarm bell are con- Normally, the bounce -back signal is the tinuously on until the intrusion alarm's same frequency as the transmitted sound, so power is disconnected. However, with the the alarm doesn't trip. But as soon as some- switch on the reset position, the alarm turns one enters the sound field, the frequency of itself off after one minute and as already

the signals . bouncing off the intruder is mentioned, is then ready to detect any sub- changed due to the Doppler Effect, and the sequent motion in the area. receiver is tripped. Performance. We tried the Euphonics In- What happens in the receiver is the real trusion Alarm exactly as suggested in the difference between the simplified intrusion instructions: i.e., we placed it at one end alarm and the Euphonics Unit. When the of a room at an approximate height of 4 ft. Euphonics receiver is tripped it just doesn't (concealed between books in bookcase). turn a on an alarm. Instead, the receiver By adjusting the sensitivity control we were activates time -delay circuits which provide a able to detect just a slight wave of the hand variety of possible alarm combinations. 20 ft. away. Lights and Bells. On the back of the Eu - Hard -surfaced rooms with lots of uncov- phonics Intrusion Alarm are two 117 -VAC. ered wall space produced more sound reflec- outlet sockets, a slide switch, and a sensitivity tions and the alarm's coverage was almost control. The sensitivity control quite natu- wall-to-wall. But soft rooms, rooms with rally determines the pickup range of the poor sound reflections because of covered alarm. The two outlets are used for the walls and upholstered furnitúre, reduced the alarm circuits: one outlet for lights, and one alarm's sensitivity range to 10 to 15 ft., de- for a delayed sound alarm such as a bell. pending on the degree of room hardness. The switch provides for alarm hold or But even a 10 -ft. range still gives coverage auto reset. When the switch is set to alarm to the center of the room and will spot any- hold, the alarm's power outlets are locked one walking around or through. on in the event the alarm is tripped. But Though Euphonics claims the alarm can when the switch is set to auto reset, the alarm be used outdoors, we didn't have a chance to will reset itself to standby after one minute run an outdoor test. Nonetheless, we suspect and will then detect any subsequent motion. that birds, cats, and dogs would be just as Here's howl the entire alarm system works effective at tripping the alarm as a human from turnon to sound -off. As soon as power intruder. is applied by turning the power switch on, a The unit is supplied complete, with a set 20 -second time delay is activated, which of mounting brackets that permit the alarm allows the user 20 seconds to get out of the to be mounted on a wall or under a shelf. area. After 20 seconds the alarm circuits are The lights (up. to 800 watts can be handled activated. by the alarm) are supplied by the user, As soon as an intruder enters the area, though dealers can provide alarm bells. Summing Up. As far as We can tell, the Euphonics Intrusion Alarm is as effective a device for protecting the home as anyone could want. And because of its very' small size it makes a highly attractive alarm system for travelers worried about leaving their SENSITIVITY HOLD/RESET CONTROL SWITCH valuables in an empty hotel or motel room (just the sudden flashing on of lights is gen- Rear view of alarm. Lights or bells con- erally enough to scare off a burglar). nected to lights sockets come on instantly; The other sockets have built-in 20 -sec delay. Euphonics Intrusion Alarm (type A-1) lists at $97.50; optional equipment the receiver trips the 117 -VAC light outlet includes indoor and outdoor bells and a key - and the room lights or flood lamps are turned lock power switch. For additional informa- on. From the instant the lights go on a 20- tion write Euphonics Marketing, Dept. LE, second delay is activated, at the end of which 173 W. Madison St., Chicago, Ill. 60602.

76 RADIO-TV EXPERIMENTER

www.americanradiohistory.com By MARSHALL LINCOLN

AM RAFFIG E WRDOS Kiboshing Hamdom's Hooligan Breed

Do you want to join the latest "in" crowd tudes to amateur radio. Their contemptible that's invading amateur radio? If so, you'd and irresponsible behavior will soon wreck better hurry. You've got to make your "rep" our priceless hobby unless they are squelched. fast and develop habits' to match. Loose Living. Eyebrows are lifting all First, you must prepare a long list of nasty over the country at the senseless carryings- four-letter words and keep this as a reference on of operators who seem to think the ham close beside your rig. Then you must build bands are nothing more than a nationwide up a sizable collection of off-color stories. stag party. The once proud traditions and Better set up a file card system for these, so shining accomplishments of amateur radio you can find the one you want quickly while could go down the drain with a sick gurgle on the air. Next, develop a knack for using if these sick minds aren't either cured or put these two operating aids on the air to ridicule off the air. other operators and to promote your own Though the number of operators engaged pet ideas on politics, religion, or what have in these activities is still fairly small, it seems you. to be growing daily. Guttersnipe language, Finally, devote several hours each day de- snearing remarks with a double meaning, veloping an intense feeling of disrespect for and derogatory comments on a wide variety your brother hams and an utter disregard of subjects including politics, religion, and for the effect of your actions on the future race are making some of the ham frequencies of amateur radio. Be ready, willing, able, sound like rats' alley. and eager to deliberately interfere, with any Maybe the current tendency toward "any- station on the air which you don't like. thing goes" has spawned this recklessness in Now you are properly equipped to become amateur radio. Perhaps the frequent con- a participating member of a growing and in- temptuous outbursts in our modern society fluential group in modern amateur radio. where respect for the other person seems We'll call this bunch of shortwave hooligans forgotten has also had its effect on today's the ham busters. They're the guys who are ham. Whatever the cause, this modern bringing pool-hall language and gutter atti- certainly is no good for ham radio. We're

Operating ham station setup at Sahara Amateur Radio Opera- tors convention in Las Vegas are Lee Miller (left), WA7AEL, and Wayne Nail, WB6CBW. Station was manned by mem- bers of West Coast Amateur Radio Service, a 500 -member group that monitors 7255 kHz daily for emergency and rou- tine communications. Nearly 900 hams attended convention.

AUGUST -SEPTEMBER, 1968 77

www.americanradiohistory.com mitted, you may operate as a portable sta- tion at the new address, just as before. How- HAM TRAFFIC ever, now there is no time limit to this portable operation, and you need to send a notice of this portable operation only to the already criticized for spawning too much idle FCC office having jurisdiction over your new talk and too few technical accomplishments. address. Now that some of this talk sounds like a Formerly, you were supposed barroom to notify brawl, our respectability in the eyes the FCC office with jurisdiction over your of outsiders will drop several notches further. old address as well, though a lot of ops didn't To The Rescue. Vigilante groups are al- bother to do this. Just like the changes in ' ready springing up in radio clubs across the ham station identification requirements a few nation to deal with this menacing behavior months back, these new changes make it legal on our ham bands. These groups, if well to do approximately what many hams have handled, can be the most effective force in been doing for years! dealing with the problem. This is because Birdies and Fuzz. Are your "birdies" the FCC rules governing obscene and pro- bothering the iron birds? Or in plain lan- fane conduct on the air are quite vague and guage, do you have a transmitter emitting have been watered down even further by spurious radiation that can interfere with air- court decisions. Also, deliberate interference craft radios? If so, better clean up the trouble and harassment directed at other stations is before you get an angry knock on the door extremely hard to prove. So, official en- in the middle of a QSO. forcement is likely only in extremely bad The Federal Aviation Administration says cases. some electronic devices, including walkie- In past years, hams have done a pretty talkies and radio -controlled garage door good job of policing their own bands. With openers, emit signals that interfere with air- this new menace facing us, it's hoped we craft communications. And an FCC official can still face up to the challenge. says these gadgets, plus such items as elec- What can an individual do? The most tronic heaters, wireless microphones, and important thing which should be obvious to welding tools have polluted the radio spec- all operators is to behave yourself on the air. trum with noise. He reports the FCC received Make sure you don't fall into the bad habits 40,000 interference complaints last year, of the ham buster crowd. Next, when you with the most serious ones involving aviation hear another ham abusing his operating communications. privilege by causing interference or using Modern air transportation depends heavily improper language, don't lower yourself to on radio for navigation and air traffic con- his level by bawling him out on the air. This trol, as well as for routine communications. would just make matters worse. A few seconds of interference at a critical One thing you should do is make a mental time during a flight could easily spell doom note to never, absolutely never talk to this for over a hundred people. For these rea- guy on the air-not even in a casual signal sons, the FCC was recently given added report. Ignore him completely. If enough authority to crack down on gadgets that in- hams do this, the ham busters may get the terfere with legal communications. Got the idea that their presence on the bands isn't message? appreciated. Then they'll have to give up News for GIs. The FCC seems to be ham radio, or clean up their manners. In leaning over backwards to encourage folks either case, ham radio-and all conscien- of all ages to obtain Novice Class ham tious, respectable hams-will be the winners. licenses and make use of them for their FCC Rule Change. This one is rather intended purpose-to learn about ham radio minor, and affects only some of the paper throtigh on -the -air operation. A while back shuffling we all must do at times to stay the Feds extended the Novice license term legal. The new rule requires that when you to two years. Now special provision has move from one permanent address to an- been made for Novices who go into military other, you must submit the change of address service overseas. (on a form 610) within four months after James E. Barr, chief of the FCC's safety the move, and before any on -the -air operat- and special radio services bureau, reports ing at your new address. that if a serviceman has a Novice license Once this change of address has been sub- (Continued on page 108)

78 RADIO-TV EXPERIMENTER

www.americanradiohistory.com FLOWER POWER SIGNALITE Nifty posies from Nixieland speak in sweet nothings only she can understand By James Robert Squires

Many times when I left my desk I had to Secretaries, bless them, love flowers. And leave a note for my' secretary. Frequently flowers are a natural way to effectively con- these notes were lost in the pile of mail on ceal a message indicator. So I purchased a her desk, and they finally got so cumbersome bouquet of artificial flowers and hid a neon she suggested using a code of numbers- Nixie tube amid the colorful posies. With each having a different meaning. For exam- these digits coming through nicely, the Flow- ple, the number 5 on a sheet of paper could er Power Signalite later took on many of the mean "I have left the building for the morn- duties of an intercom-often too expensive ing." and too noisy for many offices and homes. After trying this for a while, the next step Digital Design. To illustrate how the was to convert this random system of mes- Signalite worked, my code for "Don't bother sages into an electronic device that met two me no matter what" was the number O. The criteria. First, it had to be pleasant to have number 1 soon came to mean "Please come on the desk. And second, it had to com- in for dictation"-and so on through the ten

municate the message efficiently. digits. ( With continued use, other features

AUGUST -SEPTEMBER, 1968 79

www.americanradiohistory.com 31/2 in. with room to spare. (A cabinet meas- uring 5 x 5 x 5 in. is given in Parts List.) FLOW[11 POWER First remove the cover, then tape white paper firmly over the faces of the cabinet. Using the pictorial diagram, lay out the drill proved helpful and they were added. For centers on the front, bottom, and rear of the instance, a remote switch was provided for control box. my secretary so that when she had under- The two rocker-switch holes are best cut stood the message, she could turn off the in- by constantly comparing the rocker arm and dicator. The sharp click of the relay in the the rectangular hole as you shape and file. control unit on my desk was a clear indica- A little care will provide a neat, rectangular tion that the message had been read AOK. cutout. Black paint along the edges of the Whatever applications you discover, the holes improves their appearance. Drill the numerals lend themselves to any sort of code other holes in the bottom and rear of the you wish to devise. Simplicity, however. chassis according to the diagram. should be the key factor in your system. Install the power cord using a strain -relief Off and Running. A tilted, cowl -type plug, and leave about six inches extending chassis/cabinet was selected to give a pleas- into the box for wiring purposes. Two ter- ant appearance on the desk. The parts will fit minal strips, an eight -pin and a three -pin, into any small cabinet of at least 41 x 41 x come next. You can use round -head screws,

PARTS LIST FOR FLOWER POWER SIGNALITE Cl, C2-30-uF, 250-VDC electrolytic capacitor Si, S5-Spst rocker switch (Burstein-Applebee CB1-Circuit breaker (Sylvania MB -315 or 18D510 or equiv.) equiv.) S2-Spst, red pushbutton switch, normally D1, D2 -1N4365 silicon rectifier (Texas In- open struments) S3-Spst, black pushbutton switch, normally 11-Snap-in neon panel light, 1 -in. dia. (Bur- closed stein-Applebee 17C312 or equiv.) S4 -1 -pole, 12 -position, non -shorting rotary 12-Neon-glow readout tube (National Elec- switch (Mallory 32112J or equiv.) tronics NL840 or equiv.) 1-5x5x5-in. cowl -type cabinet/chassis (Bud K1 -115-V, 10-A, 3PDT enclosed relay (Guard- SC -2133 or equiv.) ian IR 1220 -3C -115A or equiv.) I-Box for black remote switch (see text) K2 -115-V, 45 -sec. spst thermal delay relay, 1-Unshielded intercom cable (Allied 55E8552 9 -pin min., normally closed (Amperite 115- or equiv.-see text) C45T or equiv.) P1-Power cord and plug, grey, 71/2 ft. (Bur- Misc.-Miniature 9 -pin socket, terminal strips stein-Applebee 19B800 or equiv.) (see text), fuse clip, 3/4 -in. standoffs, strain - R1 -1,000 -ohm, 20 -watt resistor relief plug, artificial flowers, decals, grom- R2 -15,000 -ohm, 1/2 -watt resistor mets, hardware, wire, solder, etc. Circuit below comes to life when superim- R2 posed numerals in neon Nixie tube (12) 15K #W 01 start to light up. Note voltage doubler C2 (D1 and D2) which powers this fantastic C1I Ó3Vf I2 ^ tube. Since line voltage (117 VAC) is 02 250V }OFF used throughout, watch your own digits + 30uF I o I o I while wiring for those of neon variety. 1 I 250V L 1 - R1 1 I 2 2 1K I I r.POWER 4 é 3 I I 2Cir ' t' 7 \\\ 4 4s I ___ S LATCH 8 6 6 7 redS2 3TIMER e9 POWER K1 9 SI START r ---I I i: s1K2 IAMPERITE Pl 115V ;IF S3 black COIL * DELAY TUBE e a._ I REMOTE L (NC)

S5 CB1 - TIMER

80 RADIO-TV EXPERIMENTER

www.americanradiohistory.com 51, 52, 54, S5, and 11 2}' take up space on front BACK panel. At right go 9-pin socket, 20-watt resistor, DRILL IV and 3 -pin terminal strip. FRONT be- DRILL (2 REQ.) Relay mounts at back tween holes for power DRILL 1' DRILLf cord and intercom cable. DRILL DRILL Cl and ,C2 are placed underneath relay, while ,. 3 W circuit breaker goes to --1 1 left of relay. Mount 8 - pin terminal strip (with DRILL¡ DRILL'i BOTTOM z II (4 REQ.) SEE DETAIL 13 D1, D2, R2) on left side. BACK

cur 2 RECTANGULAR _4#' HOLES TO FIT ROCKER SWITCHES

DETAI L OF BOTTOM

(SURFACE AS SEEN FROM ABOVE)

but it would be better to use countersunk tors are dressed along the floor of the chassis flats if they are available. Two Cinch -Jones with the plus ends facing the Amperite tube. terminal strips and the fuse clip for the Syl- This way, the positive ends use the three -pin vania circuit breaker are now mounted as terminal strip and the negative ends connect shown in photo. to the eight -pin strip. Before mounting the nine -pin socket for The mounting plate provided with the re- the Amperite miniature delay tube, wire pins lay is snapped on to the unit, and the assem- 1, 3, 6, and 9 of the socket with a 6 -in. length bly is then mounted to the rear wall of the of #20 wire. Then mount the socket using box. 3/4 -in. standoffs. Be careful not to short the It is helpful to start wiring at the power metal pins to any surrounding metal. cord and work through the schematic to- Cord to Cable. The two 30-uF capaci- wards the output cable going to the Nixie

Right side of chassis with cover removed. Power cord is at far left, while intercom cable comes in just behind power resistor. Use grommets for these holes, and mount 9 -pin socket on 3/4 -in. standoffs. Since power resistor gets very hot, drilling ventilation holes near it (on back panel) will help it to keep its cool.

AUGUST -SEPTEMBER, 1968 81

www.americanradiohistory.com numerical -indicator tubes available on the market. Burroughs Corp. and National Elec- FLOW[ll POWEll tronics both sell indicators using the neon glow principle (a National Electronics model is given in the Parts List). The Nixie tube tube. When hooking up the relay, check was used with a cut -down socket. your work against the schematic provided One artificial flower was disassembled and with it. Then, before you turn the unit on, strung around the tube wires. The petals and assure yourself that R1 (the 20 -watt, 1000 - were added to give a natural look and ohm power resistor) is mounted clear of to make it look as though the tube were the other wires and circuitry. This resistor will natural center of the flower. The wired flow- get very hot, so adding some ventilation er was then clustered amid the others in a holes near it might not be a bad idea. colorful bouquet. It is a good idea to weigh Diodes D1, D2, and resistor R2 are down the base with BBs to prevent it from mounted 9n the eight -pin terminal strip. The being top-heavy. remote -cutoff button (this is switch S3 on the Turning on power switch S1 energizes schematic diagram) must be mounted in a panel light I1 only. The relay is wired as a chassis so that its terminals cannot be latching device and is activated only by touched. You can use any sort of box or pressing S2 (red button). Operation may be cover that is appropriate. continuous, or timed to switch off in 45 seconds. The timed sequence is initiated by switching on S5. The relay may be unlatched. by either the remote button, the internal timer, or the power switch. The timer circuit opens the relay after 45 seconds, assuming a message has not been sent during the previous minute. If messages are sent (using timer cutoff) in intervals of less than two minutes, relay shut- off times will be less than 45 seconds. The sound of the clicking relay is enough to tell you when the indicator switches off. The message indicator can be energized Control box has symmetrical layout and will for longer times by switching off the timer have attractive appearance on any desk. Pow- control. In this position the relay can only er cord and intercom cable can be hidden. be turned off by the remote button or the The eleven leads from 12 (the Nixie tube) main power switch. However, it is best not and two leads from the remote button are to leave the message on for too long, as now wired into the box. (Note since there RI will'eventually heat up excessively. The are no unshielded intercom cables having unit is designed for message-on times of just 13 leads, a cable with 18 leads is given three minutes or less. in Parts List. Many of the parts for your The twelve -position selector switch S4 is Flower Signalite may be difficult to obtain used to select any one of ten digits from locally. Consult catalogs of Burstein -Apple - 0 to 9. Note that there are two off positions bee, 1012 McGee St., Kansas City, Mo. on S4 which are adjacent. 64106, and Allied Radio, 100 N. Western Your Flower Power Signalite will find use Ave., Chicago, Ill. 60680, for the compo- in the office, between den and kitchen or nents listed.) workshop and kitchen, and especially in the When all wiring is completed, it should sick room. It is particularly useful when be checked thoroughly. Line voltage (117 voice transmission is either impossible or im- VAC) is used throughout, so the circuit can practical. In machine shops, for example, a be dangerous if connected improperly. Cir- voice intercom between foreman and front cuit breaker CB1 will open at about 1.5 A. office would be of very little help to either However, it closes again when cool, even party. though the short still remains. It is best to But gal Friday should be the principal unplug the cod as soon as possible after a beneficiary. You know a fellow can never go short is noticed. wrong if he gives his girl flowers-especially Neon Glow. There äre at least two neon if there's a message for her.

82 RADIO-TV EXPERIMENTER

www.americanradiohistory.com RadlodY EXPERIMENTER I3 CHECK ceiver is more or less standard for the low- priced group. Both the transmitter and receiver are crystal -controlled on any of six channels. Separate crystals are used for both transmit and receive. The transmitter is a 3 -stage affair with a triple L -section tuned output circuit. The receiver is single -conver- sion with a stage of RF amplification, a mixer, an oscillator, two stages of IF ampli- fication, a noise limiter, and AF output. An external jack on the rear apron allows connection of a standard remote speaker. The external speaker jack automatically dis- connects the "mike" speaker during receive when the remote speaker is plugged in. Yet the mike functions normally in the transmit mode even with a remote speaker connected. To obtain greater selectivity (or adjacent - channel rejection) than is common with two stages of IF amplification, a ceramic filter is used in the first IF amplifier. The transceiver is supplied complete with AMPHENOL MODEL 750 one set of crystals, the mobile mount, and a microphone. The DC Pocket -Sized plug -jack connected power leads are permanently connected for 5 -Watt CB Transceiver 12-V negative -ground operation. The chan- nel -selector window is illuminated, and a set of numerals is provided so the user can slip in the appropriate channel markers. You never realize just how much space Two Brackets. Two microphone brackets a little speaker eats up till you see a solid- are provided. One is the standard clip -type state transceiver without a speaker inside. A which can be mounted just about anywhere case in point is Amphenol's latest entry in the on the dashboard. The second bracket is CB field, the model 750 5 -watt transceiver. somewhat unusual-it's a grooved plastic Yes, that little package shown in the photo is just about the size of a walkie-talkie and ANTENNA AF OUTPUT less than a hand's span wide. JACK And now hear this: it's also a full 5 -watt TRANSISTORS transceiver. Fact is, the photos don't show how small it really is, because the unit can actually be tucked into a coat pocket! Measuring just 2 x 43/4 x 51/ in., the 750 gets its small size by eliminating the speaker from the case (the rest of the circuitry com- mon to a 5 -watt transceiver is all there). And where's the speaker? In the microphone case-as you may have already guessed. De- press the PTT (push -to -talk) button and you EXTERNAL POWER CABLES switch the speaker into the modulator circuit SPEAKER JACK to make like a microphone. Yet it looks for Jack allows connection of external speaker all the world like a standard hand-held mike. without affecting mike function of speaker/ CC On Six. The remainder of the trans- mike combo, secret of 750's small size.

AUGUST -SEPTEMBER, 1968 83

www.americanradiohistory.com noise to noise) ratio, somewhat better than the claimed specs. Adjacent -channel rejec- ;n3 CHECK tion measured 31 dB, considerably better than claimed by the manufacturer. Image rejection, the ability of the receiver to reject block permanently mounted on the bottom signals appearing at twice the IF frequency, of the transceiver case. measured but 4 dB (poor). Still, this is The top of the "mike" speaker has a typical of nearly all single -conversion solid- mating plastic block that slides into transceivers. Further, normally there grooved bracket. When the "mike" speaker are no signals on the image frequency, so the is slipped into the groove it becomes part of user will seldom be bothered by image -fre- the transceiver, and the sound radiates for- quency interference. ward just as though the speaker were built AGC action for a 1 to 1000 microvolt test into the front of the transceiver case. Yet signal range was 4 dB (good). By way of when a call is received, the user simply slips explanation, AGC (automatic gain control) the "mike" speaker out of the grooved holder is provided in a receiver to avoid overload on and brings it toward his face. strong signals, and to prevent \strong signals Performance. Since gimmicks are worth- from blasting from the speaker when the less if performance isn't up to par, We tested volume control has been cranked wide open the Amphenol 750 just as we would any to pick up a weak station. The effect of other 5 -watt transceiver. The transmitter's AGC is to automatically reduce the receiver's performance was typical of most other solid- gain on strong signals. state transceivers. Power output with a Between the input signal test values of 1 uV (to simulate a weak signal), and 1000 uV (to a very strong sig- POWER simulate TRANSFORMER nal), the 750's AGC re- duced the 60 -dB signal spread to a mere 4 dB varia- tion in speaker output level. So good was the AGC ac- tion, in fact, that the change RELAY in sound volume between the two stations was barely noticeable.

About the size of a walkie- talkie, the 750 accepts six transmit, six receive crystals.

MIC JACK -----La CRYSTAL SOCKETS 13.8-V power supply (simulating battery, Low -Power Drain. Besides its very small charging voltage in a moving auto) checked size the Amphenol 750 features a very low out at 3.1 watts into a 50 -ohm load. The current drain. The total consumption is only modulation sensitivity (the signal into the 170 mA in receive/standby, and 1.2 A dur- microphone) at 1000 Hz was exactly aver- ing transmit. Because of this low current age for 85% modulation. (The 85% figure drain a set of 6-V lantern batteries used as a is thè Standard measurement value and is portable power supply will provide several essentially equal to 100%.) hours of operation. The batteries can even Negative modulation was limited to be tied to the top of the transceiver, and 100%, and test signals into the microphone the addition of a book strap would complete equal to a very loud shout did not cause a very portable, full 5 -watt station. overmodulation. Due to use of a speaker Summing Up. Where size is of first im- type microphone, módulation quality re- portance the Amphenol 750 is the first sulted in a sound very much like that from choice. The unit goes for a Mere $79.95. a standard intercom. For additional information write to the Receiver section sensitivity checked out at Amphenol Corp.,' Dept. DF, 2875 S. 25th 0.8 uV for a 10 dB S+N/N (signal plus Ave., Broadview, Ill. 60153.

84 RADIO-TV EXPERIMENTER

www.americanradiohistory.com THE I IOOFIN' HEART In the beautiful Dolling hills of New carried in the patient's pocket, and' studies Jersey, a young veterinarian is using aero- the results on a nearby recording device. space technology to write a new chapter in Humans vs. Horses. Significant work has man's scientific efforts to learn more about been done in human electrocardiography, the horse. but there hasn't been much done with Dr. G. Frederick Fregin is pioneering in horses," Dr. Fregin observes. Though the

the field of radioelectrocardiography in vet- first normal ECG of a horse was published erinary medicine. Specifically, he's studying in 1910, little has been done in the field race horses to find out what constitutes their since, and nothing with radioelectrocardiog- normal heart activity under varying condi- raphy until recently." tions, so that later he will be able to discover Dr. Fregin became interested in radio te- abnormalities. lemetry as a post -doctoral student at the Uni- Radioelectrocardiography is the use of versity of Pennsylvania's School of Veter- radio telemetry for heart study. The te- inary Medicine, where he is now a fellow lemetry, equipment measures the activity of in cardiology. A guest lecturer, Dr. T. the heart and transmits the results to a dis- Senta, described how he and his associates tant receiving device. in , using radio telemetry, had been With techniques of modern medicine it able to take a horse's ECG while the horse is relatively easy to record the electrocardio- was running. Intrigued by the Japanese ex- gram (ECG) of a human. A doctor merely periments, Dr. Fregin borrowed some radio tapes electrodes to the patient's skin, attaches telemetry equipment from Dr. Samuel Bellet, them to a small transmitter which can be a widely known cardiologist who had studied

AUGUST -SEPTEMBER, 1968 85

www.americanradiohistory.com Longer Range. He procured even more powerful equipment from a United Aircraft The i n' Heart Hof Medical telemetry group based in the cor- poration's Hamilton Standard Division in Windsor Locks, Conn. The new equipment thé heart reactions of automobile drivers to suited Dr. Fregin's work perfectly. A more various situations behind the wheel. powerful transmitter and the use of a special But Dr. Fregin had difficulty adapting the antenna on the receiver increased the range technique: "When the horses stood still, the to about a half -mile. ECG trackings were good. But during ex- The doctor began further testing on race ercise, the horses sweated 'so profusely and horses in Hydes, Md. He even devised a

Dr. G. Frederick Fregin adjusts radio transmitter before plac- ing it in special pouch on sad- dle. Transmitter will send con- tinuous ECG of running horse to distant receiver. Before radio telemetry, electrocardi- ography required wiring an animal to a stationary ma- chine. New mobility will be big aid to veterinary medicine.

moved so violently that the electrodes kept special saddle to carry the transmitter so as pulling loose." not to encumber the highly excitable Dr. Fregin experimented with various thoroughbreds. He was encouraged by the combinations of electrodes, electrode hous- way the equipment worked, so he extended ings, jellies, and glues, and finally found a his testing to the more docile American combination that worked. But a more seri- standardbreds, the breed normally associated ous problem arose: his borrowed equipment with harness racing. was not powerful enough. If a horse moved Still, the doctor was working in virtually more than a few feet away, the signal would uncharted waters. ¶Vith standard equipment, not reach the receiver. it had been possible to take a horse's ECG

Before radio telemetry, MDs only guessed at horse's maximum heart rate-about 260 beats.

86 RADIO-TV EXPERIMENTER

www.americanradiohistory.com Doctor Fregin secures saddle before test run. He designed special saddle so as not to disturb and encumber highly excitable thoroughbreds. Here, transmitter goes into empty pouch. But for work with trot- ters, transmitter is strapped on to back of sulky driver by means of a special harness.

within a minute or two after exercise-the doctor will weigh whatever he learns by time it took to bring the horse from the track means of radio telemetry with information and attach it to the device. But the heartbeat gathered during extensive physical examina- of a horse slows quickly during the first tions of the horses. He expects his study to minute after such exercise, sometimes as take about a year, and the results will be the much as 100 beats a minute. basis of his master's degree thesis. With radio telemetry, the ECG can be The 29 -year -old doctor spends much of taken either while the horse is on the dead his time in his second -floor office and in the run or while it is standing quietly in its stall. adjacent barns and laboratories which make The resulting information has surprised vet- up the quadrangle of the School of Veter- erinarians. inary Medicine in downtown Philadelphia. When a normal horse is resting, its .heart (Continued on page 112) usually beats 30 to 35 times a minute. Dur- ing strenuous exercise, Dr. Fregin has meas- ured the rate as high as 260 beats a minute! No More Guessing. Doctors had only guessed the maximum heart rate of a horse, because before radio telemetry there was no way to measure- it. "The increase in rates between rest and heavy exercise that we have seen with radio telemetry are remarkable and much higher than many doctors would have believed possible," Dr. Fregin com- ments. The doctor has begun to compile statistics on horses' heartbeats under varying exercise conditions to establish what is normal and what is abnormal. Without such data for comparison, -future examinations would be meaningless. He has confined his study to taking radioelectrocardigrams of 20 clinical- ly normal horses at rest, during exercise, and immediately after exercise. "We know certain changes occur in the ECG' of humans during various stages of exercise. Similar changes also appear in horses. Some people have felt that these ECG changes in horses suggest signs of mild cardiac damage, others say the changes are Electrodes are attached just before workout normal. I want to find out what they really begins. A great deal of testing was required mean in otherwise normal, healthy horses." before right electrode combination was found Before he reaches any conclusions, the which would stick during heavy exercise.

AUGUST -SEPTEMBER, 1968 87

www.americanradiohistory.com by Jack Schmidt .bg the e_

."Yes, Sir, that's quite an antenna you have." "The main thing it picks up is girls!" '

L

"l'li carry it up . you ask if it's waterproof!" "Come on, Tommy, tell Daddy where his radio is!"

G U'S(' IY,(' :~`\

1 1 , ,. "Yes, I would mind moving to the left!" "Have to get it checked ... picture's weak again!"

88 Ramo -TV EXPERIMENTER

www.americanradiohistory.com WHITE'S

Volume 50, No. 1

An up-to-date Broadcasting Directory of North American AM, FM and TV Stations, including a Special Section on World -Wide Shortwave Stations

n this issue of White's Radio Log we have following listings: U.S. AM Stations by Call .included the following listings: U.S. AM Letters, U.S. FM Stations by Call Letters, Stations by Frequency, Canadian AM Sta- Canadian AM Stations by Call Letters, Cana- tions by Frequency, U.S. Television Stations dian FM Stations by Call Letters, and an ex- by States, Canadian Television Stations by panded World-Wide Shortwave Section. Cities, and World -Wide Shortwave Stations. Therefore, in any three consecutive 1968 In Our Next Issue, Oct -Nov., 1968, issues Of RADIO-TV EXPERIMENTER maga- the Log will contain the following list- zine, you will have a complete cross-refer- ings: U.S. AM Stations by Location, U.S. ence listings of White's Radio Log that is FM Stations by States, Canadian AM Sta- always up-to-date. The three consecutive tions by Location, Canadian FM Stations by issues are a complete volume of White's Ra- Location, and an expande: Shortwave dio Log that offers up to the minute listings Section. The shortwave listings are always that are not to be found in any other magazine completely revised in each issue of Log to or book. If you are a broadcast band DXer, insure 100 percent up-to-date and accurate FM station logger, like to photograph dis- information. tant TV test patterns, or tune the shortwave In the December, 1968 issue of RADIO-TV bands, you will find the new- White's Radio EXPERIMENTER, the Log will contain the Log format an unbeatable reference. p

1,,,,1,,,111,1111111111,11,1,111,1111111 111111111111 w,u,n,u, uliulli,e11,u,11.11u11 1u1111 1. 0uuuu.uuuuue,ur u., nruur mmnimmrtr 11,111,111u,u",111u11111,. 11111111u,um,u1x1u11o,111,uuu141ww14111uu1uu,1111u1mmuo,u,u,uu,,,,u,,,,uu,,,,,,,q

1111 QUICK REFERENCE INDEX U.S. AM Stations by Frequency 90 Canadian AM Stations by Frequency 100 U.S. Television Stations by States 102 Canadian Television Stations by Cities 104 World -Wide Shortwave Stations 105

11

AUGUST -SEPTEMBER, 1968 89

www.americanradiohistory.com WHITE'S U.S. AM Stations by Frequency LnSLII "JDO U. S. stations listed alphabetically by states within groups. Abbreviations: kHz, frequency in kilocycles; F W.P., power in watts; d, operates daytime only; n. operates nighttime only. Wave length is given in meters. Listing indicates stations on the air up to April I, 1968. i lO@ kHz Wave Length W.P. kHz Wave Length W.P. kHz Wave Length W.P. kHz Wave Length W.P. 540-555.5 KLUB , Utah 5000 KAVL Lancaster, Calif. 1000 KVI Seattle. Wash. 5000 KFRC San Francisco. Calif. 5000 680-440.9 KVIP Redding, Calif. 5000d WMAM Marinette, Wis. 250d WTOR Torrington, Conn. 1000 KNBR San Francisco, Cal. 50000 WGTO Cypress Gardens, WIOD Miami. Fla. 5000 WPIN St. Petersburg. Fla. 1000d Fla. 50000d 580-516.9 WMEL Pensacola, Fla. 500d WRNG N. Atlanta, Ga. 5000 WDAK Columbus, Ga. 5000 WABT Tuskegee, WCEH Hawkinsville, Ga. 500d WCTT Corbin. Ky. 1000 Ala. 500d 10000 KWMT Ft. Dodge, Iowa 5000d Tucson, 5000 KUAM Agana, Guam 10000 WCBM Baltimore, Md. KIKX Ariz. WRKO Boston, Mass. 50000 KNOE Monroe. La. 5000 KMl Fresno. Calif. 5000 WRUS Russellville, Ky. 500d WDMV Pocomoke City, Md. 500d KUBC Montrose, Colo. 5000 1(DAL Duluth, Minn. 5000 WDBC Escanaba, Mich. 10000 Mo. WLIX Islip, N.J 250d WDBO Orlando. Fla. 5000 WDAF Kansas City. Mo. 5000 KFEQ St. Joseph, 5000 WETC Wendell-Zehulon, WGAC Augusta, 5000 KOJM Havre, Mont. 1000 WINR Binghamton, N.Y. 1000 Ga. WNYR Rochester, N.Y. 250 N.C. 250d I(F)(D Nampa, 5000 l(CSR Chadron, Nebr. I000d WPTF 50000 WARO Canonsburg, Pa. 250d Urbana. III, 5000d W G I R Manchester. N.H. 5000 Raleigh, N.C. WILL WISH Butler, Pa. 250d WYNN Florence, S.C. 250d KSAC Manhattan, Kans. 5000 KGGM Albuquerque. N.Mex. 5000 WAPA San Juan, P.Rico. 10000 WDXN Clarksville. Tenn. 1000d WIBW Topeka. Kans. 5000 WAYS Charlotte, N.C. 5000 WRIC Richlands. Va. 1000d WTVN Columbus. OhIo 5000 WMPS Memphis. Tenn. 10000 KALB Alexandria, La. 5000 KBAT San Antonio, Tex. 50000 WYLO Jackson, Wisc. 250d WTAG Worcester. Mass. 5000 WIP Philadelphia, Pa. 5000 KILT Houston, Tex. 5000 KOMW Omak. Wash. 1000d WELD Tupelo. Miss. 1000 I0000d 550-545.1 KANA Anaconda. Mont. 1000 KVNU Logan. Utah 5000 WCAW Charleston, W.Va. WAGR Lumberton, N.C. 500 WSLS Roanoke, Va. 5000 KENT Anchorage. 5000 WHPL Winchester. Va. 500 690-434.5 KOY Phoenix, Ariz. 5000 KWIN Ashland, Oreg. 1000 Pa. 5000 KEPR Kennewick-Richmond - WVOK Birmingham, Ala. 50000d KAFY Bakersfield. Calif. 1000 WHP Harrisburg. WKAQ San luan, P.R. 5000 Pasco, Wash. 5000 KEOS Flagstaff, Ariz. 1000 I(RAI Craig. Colo. 1000 Tucson, Ariz. 250d WAYR Park, 1000d I

90 RADIO-TV EXPERIMENTER

www.americanradiohistory.com kHz Wave Length W.P. kHz Wave Length W.P. kHz Wave Length W.P. kHz Wave Length W.P.

KULE Ephrata. Wash. 1000d KINY Juneau. Alaska 5000 KSHA Medford, Oreg. 1000d KCJB Minot, N.Dak. 1000 WXMT Merrill, Wis. 1000d KAGH Crossett. Ark. 250d WAMO Pittsburgh. Pa. I000d WBRJ Marietta, 0. 5000 KVOM Morrilton. Ark. 250d WTEL Philadelphia. Pa. I0000d WPFB Middletown. Ohio 1000 740-405.2 KUZZ Bakersfield. Calif. 250d WLBG Laurens, S.C. I000d KGLC Miami. Okla. 1000 1000d WBAM Montgomery, Ala. 50000d KDAD Weed, Calif. 1000d KFST Ft. Stockton. Tex. 250d KURY Brookings, Oreg. KBRN Brighton. Colo. 500d KPAN Hereford, Tex. 250d WAVL Apollo. Pa. I000d KMEO Phoenix, Ariz. IOOOd 1000 Avalon. 10000d WLAD Danbury. Conn. I000d KSFA Nacogdoches. Tex. 1000d WGBI Scranton. Pa. KBIG Cal. York, Pe. 5000 KCBS San Francisco, Calif. 50000 WRKV Rockville, Conn. KONO San Antonio. Tex. 5000 WSBA KSSS Colorado Springs, Colo. WSUZ Palatka. Fla. I000d KWHO Salt Lake City, WPRP Ponce. P.R. 5000 I000d WJAT Swainsboro, Ga. 1000d Utah I000d WNCG North Charleston. S.C. 500d KVFC Cortez, Colo. WKZI Casey, Ill. 250d WEVA Emperla, Va. I000d WORD Spartanburg, S.C. 5000d WJCW Johnson City. Tenn. 5000 WSBR Boca Raton. Fla. 1l000dÓÓÓ KXIC Iowa City, Iowa I000d WOAY Oak Hill. W.Va. 10000d WKMK Blountston, Fla. 10000d WCCM Lawrence. Mass. 1000d WFOX Milwaukee, Wis. 250d WEPG S. Pittsburgh, Tenn. 500d WKIS Orlando. Fia. 5000 WVAL Sauk Rapids, Minn. 250d KNAF Fredericksburg, Tex. 1000d KYME Boise. Idaho 500d KREI Farmington. Mo. I000d 870-344.6 KRIO McAllen, Tex. 5000 WVLN Ill. I000d WKDN Camden. N. J. 5000d KRRV Sherman. Tex. 1000 Olney. KIEV Glendale. Calif. 500d KALL Lake City, Utah 5000 KBOE Oskaloosa. Iowa 250d KJEM Okla. City. Okla. 250d KAIM Honolulu. Hawaii 5000 Salt I000d KPDQ Portland. Ore. 10000 WNHV White River Jet.. Vt. WNOP Newport, Ky. W W L New Orleans, La. 50000 1000d Mass 250d WCHA Chambersburg, Pa. 1000 10000d WCAS Cambridge. WKAR E: Lansing, Mich. Va. 5000 KPBM Carlsbad. N.Mex. I000d WDSC Dillon. S.C. I000d WHCU Ithaca, N.Y. 5000 WRNL Richmond. 5000d WEAR Greer. S.C. 250d WPXI Roanoke. Va. I000d WGSM Huntington. N.Y. WGTL Kannapolìs. N.C. 1000d Pasco. Io00d Morehead N.C. I000d WDEH Sweetwater. Tenn. I000d 5000 KORD Wash. WMBL City. WHOA San Juan, P.R. Seattle, Wash. 1000 WPAQ Mount Airy. N.C. I0000d KDDD Dumas, Tex. 250d KJIM Ft. Worth, Tex. 250 KIM KRMG Tulsa. Okla. 50000 KBUH Brigham City, Utah 250d WFLO Farmville. Va. I000d KISN . Wash. 5000 Pa. I000d WSVS Crewe. Ve. 5000d WHSM Hayward, Wis. 5000d WVCH Chester. WDOR Sturgeon Bay, Wis. 1000d WIAC Sen Juan. P.Rieo 10000 WKEE Huntington. W.Va. 5000d 880-340.7 WDUX Waupaca, Wis. 5000d WBAW Barnwell, S.C. I000d KRVN Lexington. Neb. 50000 920-325.9 WIRJ Humhalt, Tenn. 250d 810-370.2 WCBS New York, N.Y. 50000 WJIG Tullahoma. Tenn. 250d WRRZ Clinton, N.C. 1000d WCTA Adalusia, Ala. 5000 KTRH Houston. Tex. 50000 KGO San Francisco, Calif. 50000 WRFD Worthington, Ohio 5000d W W W R Russellville. Ala. I000d KCMC Texarkana. Tex. 1000 KWSR Rifle, Colo. I000d KSRM Soldotna. Alaska 5000 WSCI Williamsburg. Va. 500d W AT I Indianapolis. Ind. 2500d 890-336.9 KARK Little Rock. Ark, 5000 WBOO Baraboo, Wis. WYRE Annapolis, Md. 250d KLOC Ceres. Calif. 500d WJPW Rockford, Mich. 500d W LS Chicago, III. 50000 KDES Palm Springs. Cal. 5000 N.C. losad 750-399.8 WSJC Magee, Miss. 50000 WH1 C Henderson. KVEC San Luis Obispo, Cal. 1000 Mo. 50000 KBYE Okla. City, Okla, I000d KFQD Anchorage. Alaska 10000 KCMO Kansas City, KLMR Lamar, Colo. - 5000 WSB Atlanta. Ga. 50000 KAFE Santa Fe. N.M. WMEG Eau Gabbie. Fla. 1000 WBMD Baltimore. Md. I000d WGY Schenectady. N.Y. 50000 900-333.1 WGST Atlanta, Ga. 5000 KMM1 Grand Island. Neb. 10000 WKBC N.Wilkcsboro. N.C. I000d WATV Birmingham. Ala. I000d WVOH Hazelhurst, Ga. 500d WHEB Portsmouth. N.H. 1000d WCEC Rocky Mount. N.C. I000d WGOK Mobile, Ala. 1000d WGNU Granite City, III. 500d KSEO Durant. Okla. 250d WEDO McKeesport. Pa. IOOOd WOZK Ozark, Ala. I000d WMOK Metropolis, III. I000d KXL Portland. Oreg. 50000 WKVM San luan. P.R. 50000 KPRB Fairbanks, Alaska 10000 WBAA W. Lafayette, Ind. 5000 WPDX Clarksburg. W.Va. I000d WQIZ St. George. S.C. 5000d KHOZ Harrison. Ark. 1000d KFNF Council Bluffs, la. 5000 KBHB Sturgis. S.D. 5000d KBIF Fresno, Calif. 1000d KFNF Shenandoah, la. 1000d 760-394.5 WMTS Murfreesboro. Tenn. 5000d KGRB West Covina, Cal. 250d WTCW Whitesburg, Ky. 5000d KFMB San Diego. Cal. 5000 KWDR Del Rio. Tex. WJ W L Georgetown, Del. 1000d WBOX Bogalusa, La. In00d KGU Honolulu, Hawaii 10000 WILT Tomahawk, Wis. WSWN Belle Glade. Fla. 1000d KTOC Jonesboro, La. 1000d WJR Detroit, Mich. 50000 WMOP Ocala, Fla. I000d WPTX Lexington Park, Md. 5000 WCPS Tarboro, N.C. I000d 820-365.6 WCGA Calhoun, Ga. I000d WMPL Hancock. Mich. 1000d WORA Mayaguez. P.R. 5000 WAIT Chicago, Ill. 5000d WCRY Macon, Ga. 250d KDHL Fairbault, Minn. 5000 WIKY Evansville, Ind. 250d WEAS Savannah, Ga. 5000d KWAD Wadena, Minn. 1000 770-389.4 WOSU Columbus. Ohio 5000d KTEE Idaho Falls. Ida. I000d KWYS W. Yellowstone. Mont. KUOM Minneapolis. Minn. 5000d WFAA Dallas. Tex. 50000 K EYN Wichita. Kan. 250d KRAM Las Vegas, Nev. 1000 WCAL Northfield. Minn. 5000d WRAP Ft. Worth. Tex. 50000 WFIA Louisville Ky. 1000d KOLO Reno, Nev. 1000 WEW St. Louis. Mo. I000d WLSI Pikeville, Ííy. 5000d KQEO Albuquerque, N.Mex. 1000 KOB Albuquerque, N.Mex. 50000 830-361.2 KREH Oakdale. La. 250d WTTM Trenton. N.J. 1000 WABC New York, N.Y. 50000 KIKI Honolulu. Hawaii 10000 WCME Brunswick, Maine 1000d WKRT Cortland. N.Y. 1000 KXA Seattle, Wash. 1000 WCCO MinneapolisSt. Paul, WLMD Laurel. Md. I000d WGHQ Kingston. N.Y. 5000d Minn. 50000 WATC Gaylord. Mich. . I000d WIRD Lake Placid, N.Y. 1000 780-384.4 i KBOA Kennett. Mo. I000d KTIS Minneapolis, Minn. 1000d WBBB Burlington. N.C. 5000d 1001 WBBM Chicago. Ill. 50000 WNYC New York. N.Y. 1000 WODT Greenville, Miss. 1000d WMNI Columbus, Ohio Norfolk. Neb. 1000d KFAL Fulton, Mo. 1000d KGAL Lebanon. Oreg. 1000 WJAG 1000d Lewistown, Pa. 1000 WCKB Dunn. N.C. 1000d 840-356.9 RISK Columbus, Nebr. WKVA WBBO Forest City. N.C. I000d WTUF Mobile Ala. 1000d WOTW Nashua, N.H. IOOOd WJAR Providence. R.I. 5000 KSPI Stillwater. Okla. 250d WRYM New Britain. Conn. I000d WBRV Boonville, N.Y. 1000d WIND Orangeburg. S.C. 1000d WAVA Arlington, Va. I000d WHAS Louisville. Ky. 50000 W KAJ Saratoga Springs, KEZU Rapid City, S.Dak. 1000d WI/PO Stroudsburg, Pa. 250d N.Y. 250d WLIV Livingston, Tenn. 1000d 790-379.5 WKJK Granite Falls. N.C. 500d KELP El Paso, Tex. 1000 850-352.7 WAYN Rockingham, N.C. I000d WRIR Odessa. Tex. 1000 WTUG Tuscaloosa, Ala. I000d N.C. I000d Texas Tex. 1000d Ala. 10000 WIAM Williamston, l(TLW City. KCAM Glennallen, Alaska 5000 WYDE Birmingham, KFNW Fargo. N.Dak. I000d KITN Olympia. Wash. I000á KCEE Tucson, Ariz. 5000 KICY Nome, Alaska 5000 5000d I000d WNYN Canton, O. KXLY Spokane, Wash. 5000 KOSY Texarkana. Ark. 1000 KGKO Benton, Ark. WFRO Fremont. Ohio 500d WMMN Fairmont. W.Va. 5000 KABC Los Angeles. Calif. 5000 KOA Denver. Colo. 50000 Pa. I000d Milwaukee, Wis. Gainesville. Fla. 5000 WCPA Clearfield. WOKY 5000 WLBE Leesburg, Fla. 5000 WRUF WFLN Philadelphia, Pa. 1000d WFUN S. Miami. Fla. 5000 WEAT W. Palm Beach. Fla. 1000 Tenn. I000d KIMO Hilo. Hawaii 1000 WKXV Knoxville. 930-322.4 WQXI Atlanta, Ga. 5000d WCOR Lebanon. Tenn. 500d WYNR Brunswick, Ga. 500d WCLR Crystal Lake. Ill. 500d Atlanta. Tex. I000d WETO Gadsden, Ala. 1000d W H D H Boston. Mass. 50000 KALT WORA Cairo. Ga. I000d KMCO Conroe. Tex. 500d KTKN Ketchikan, Alaska 5000 KONA Kealakekua, Haatail 1000 WKBZ Muskegon. Mich. 1000 KAPR Douglas. Ariz. 1000d KFUO Clayton. Mo. 5000 KFLD Floydada. Tex. 250d KEST Boise. Idaho I000d KCLW Hamilton. Tex. 250d KAFF Flagstaff. Ariz. 5000d KBRV Soda Springs. Ida. 5000d WKIX Raleigh. N.C. 10000 KHI Los Angeles, Calif. 5000 WJW Cleveland, Ohio 10000 WODY Bassett. Va. 500f WRMS Beardstown. Ill. 500d WAFC Staunton. Va, 1000d KEWQ Paradise. Cal. 5000d KXXX Colby. Kans. 5000d WJAC Johnstown, Pa. 10000 KIUP Durango, Colo. 5000 WEEU Reading. Pa. 1000 KUEN Wenatchee, Wash. 1000á WAKY Louisville, Ky. 5000 WATK Antis°. Wis. 250d WTHD Milford. Del. 500d WRUM Rumford. Me. I000d WABA Aguadille, P.R. 500 WHAN Haines City. Fla. 1000 WSGW Saginaw, MIA. 5000 WIVK Knoxville. Tenn. 50000d WJAX Jacksonville. Fla. 5000 KGHL Billings. Mont. 5000 WRAP Norfolk, Va. 5000 910-329.5 WKXY Sarasota. Fla. 1000 WWNY Watertown. N.Y. 1000 KTAC Tacoma. Wash. 10000 WDVC Dadaville, Ala. 500d WMGR Bainbridge, Ga. 5000 WLSV Wellsville. N.Y. I000d KPHO Phoenix, Ariz. 5000 KSEI- Pocatello. Idaho soon WTNC Thomasville, N.C. I000d 860-348.6 KLCN Blytheville, Ark. 5000d WTAD Quincy. III. 5000 KFGO Fargo, N.D. 5000 WHRT Hartselle, Ala. 250d KAMD Camden. Ark. 5000 WHON Centerville, Ind. 500d KWIL Albany. Oreg. 1000 WAMI Opp, Ala. I000d KDEO El Cajon, Calif. 1000 WKCT Bowling Green, Ky. 1000 WAEB Allentown, Pa. 1000 KIFN Phoenix, Ariz. I000d KNEW Oakland, Calif. 5000 WFMD Frederick, Md. 5000 WPIC Sharon. Pa. I000d KOSE Osceola. Ark. I000d KOXR Oxnard, Cal. 5000 WRER Holyoke. Mass. 500d WEAN Providence, R.I. 5000 KWRF Warren, Ark. 250d KPOF Denver. Colo. 5000d WBCK Battle Creek. Mich. 5000 WWBD Bamberg -, KTRB Modesto. Calif. 10000 WRCH New Britain, Conn. 5000 KKIN Aitkin. Minn. I000d S.C. I000d WAZE Clearwater, Fla. 500d WPLA Plant City, Fla. 10004 WSLI Jackson, Miss. 5000 WETB Johnson City. Tenn. I000d WKKO Cocoa, Fla. 1000 WGAF Valdosta, Ga. 5000 KWOC Poplar Bluff. Mo. 5000 WMC Memphis. Tenn. 5000 WERD Atlanta. Ga. 1000 KBGN Caldwell. Ida. I000d KOC,A Ogallala, Nebr. 500d KTHT Houston, Tex. 5000 WDMG Douglas. Ga. 5000d WAKO Lawrenceville, III. 500d KCCC Carlsbad, N.M. KFYO Lubbock. Tex. 5000 WMRI Marion. Ind. 250d WSUI Iowa City. Iowa 5000 WSOC Charlotte, N.C. 5000 KUTA Blanding, Utah I000d KWPC Muscatine, Iowa 250d KISI Salina, Kan. 500d WITN Washington, N.C. 5000 WSIG Mount Jackson. Va. 1000d KOAM Pittsburg, Kan. 10000 WLCS Baton Rouge. La. 1000 W W N H Rochester, N.H. 5000 WTAR Norfolk. Va. 5000 WSON Henderson, Ky. 500d WABI Bangor, Maine 5000 WPAT Paterson. N.J. 5000 KOMI Bellingham, Wash. 5000 WAYE Baltimore. Md. 1000d WFDF Flint. Mie.. 5000 WREN Buffalo, N.Y. 5000 KJRB Spokane. Wash 5000 WSBS Gt. Barrington. Mass. 250d WCOC Meridian. Miss. 5000 WIZR Johnstown, N.Y. 1000d WEAQ Eau Claire, Wis. , 5000 KNUJ New Ulm. Minn. I000d KOYN Billings. Mont. I000d WEOL Elyria. Ohio 1000 WMAG Forest. Miss. 500d KYSS Missoula. Mont. 1000d WKY Oklahoma City, Okla. 5000 800-374.8 KARS Bolen. N. Mex. 250d KBIM Roswell. N. M. 5000 KAGI Grants Pass. Oreg. 5000 WHOS Decatur, Ala. I000d WFMO Fairmont. N.C. 1000d WRKL New City. N.Y. 1000d KSWB Seaside. Ore. WMGY Montgomery, Ala. I000d WSTH Taylorsville, N. C. 250d WLAS Jacksonville, N.C. 5000d WCNR Bloomsburg, Pa. 1000d

AUGUST -SEPTEMBER, 1968 91

www.americanradiohistory.com kHz Wave Length W.P. kHz Wave Length W.P. kHz Wave Length W.P.

WIAZ Albany. Ga. 5000 WAPF McComb, Miss, 5000d WITL Lansing, Mich. 5000d WRFC Athens, Ga. 5000 KMBZ Kansas City. Me. 5000 WJSW Maplewood, Minn. 250d t'1 KSRA Salmon. Idaho I000d I(LYQ Hamilton, Mont. I000d WMOX Meridian, Miss. 10000 WDLM E. Moline, Ill. 1000d 1(VLV Fallon, Nev. 5000d I(CHI Chillicothe, Mo. 250d WSBT South Bend, Ind. 5000 ICICA Clovis, N. Mex. 1000 KXEN Festus-St. Louis, l(MA Shenandoah. Iowa 5000 KMIN Grants, N. Mex. I000d Mo. 50000d WPRT Prestonsburg, Ky. 5000d WTRY Troy. N.Y. 5000 WCNL Newport, N.H. 250d aOg I(ROF Abbeville, La. 1000d W KLM Wilmington, N.C. 5000d WINS New York, N.Y. 50000 WBOC Salisbury. Md. 5000 WAAA Win. -Salem, N.C. 1000d WABZ Albermarle. N.C. 1000d kHz Wave Length W.P. WFGL Fitchburg, Mass. 1000 WONE Dayton, Ohio 5000 WFGW Black Mountain, WHA I( Rogers City, Mich. 5000d WILK Wilkes-Barre. Pa. 5000 N.C. 50000d KSDN Aberdeen. KLTF Little Falls, Minn. 500d WAZS Summerville, S.C. 1000d WELS Kinston, N.C. 1000d S.D. 1000 WABG WSEV Sevierville, Tenn. 5000d Greenwood. Miss. 1000 WYCL York. S. C. I000d W101 New Boston, Ohio 1000d KDET Center, KFVS Cape Girardeau, Mo. 5000 KDS1 Deadwood, S.Dak. 1000 WUNS Lewisburg, Pa. 250d Tex. I000d KFLN Baker. KITE San Antonio, Tex. 5000 Mont. 5000d WSIX Nashville. Tenn- 5000 WHIN Gallatin, Tenn. I000d WLLL Lynchburg. Va. KNEB Scottsbluff. Nebr. 1000 KFRD Rosenberg -Richmond, WORM Savannah. Tenn, 250d 50000 KW YI( Farmington, N.Mex. Tex. I000d KENY Bellingham -Ferndale, I000d 1(V I I Amarillo, Tex. 5000 ICRII( Roswell. N. KSVC Richfield, Utah Wash. 1000d Mes. I000d 5000d KODA Houston, Tex. 50000 W WFHG Va. KQOT Yakima. Wash. 1000d EAV Plattsburg. N.Y. 5000 Bristol. 5000 KAWA Waco -Marlin. Tex. 10000d WSAZ Huntington, W.Va. WAAK Dallas, N.C. 1000d WMEK Chase City. Va. 500d WELK Charlottesville, Va. 1000d 5000 WFTC K UTI Yakima, Wash. KROE Sheridan, Wyo. I000d Kinston, N.C. 5000 5000d WMEV Marion, Va. 1000d WWST Wooster, Ohio I000d WHAW Weston, W.Va. I000d WLBL Auburndale, Wis. 50000 WPMH Portsmouth, Va. 50000 l(GWA Enid, Okla. 1000 WCUB Manitowoc, Wis. 1000d WCST Berkeley Soros-W.Va. 2500 940-319.0 K LAD Klamath Falls. Ore. 5000 WPFP Park Falls, Wis. I000d WSPT Stevens Pt., Wis. 1000d KHOS Tucson, WHYL Carlisle, Pa. 5000d WPRE Prairie du Chien, Wis. 1000 Arlz. 250 W KZA Kane, Pa. 1000d KFRE Fresno. Calif. 50000 1020-293.9 WATS Sayre, Pa. IOOOd 990-302.8 WINE Brookfield, Conn, I000d l(GBS Los Angeles, Calif. 50000 WBEU Beaufort. S.C. I000d WEIS Center, Ala. WKQH Chiefland, Fla. WBMC McMinnville, 250 WCIL Carbondale. III. 1000d WINZ Miami, Fla. Tenn, 500d W W W F Fayette. Ala. IOOOd WPEO Peoria, 50000 KIMP Mt. Pleasant, Tex, I000d Ill. 10000d WMAZ Macon, Ga. 50000 WTCB Flamaton, Ala. 500d KSWS Roswell. N. M. 50000 KAHU Waipahu, ICGKL San Angelo, Tex. 5000 KTKT Tucson, Ariz. 10000 Hawaii 10000 Provo, KDKA Pittsburgh, Pa. 50000 WMIX Mt. Vernon, Ill. 50000 KOVO Utah 5000 I( K IS Pittsburg, Calif. 5000 KIOA Des Moines, Iowa 10000 WDBJ Roanoke, Va. 5000 I(GUD Santa Barbara, Calif. I000d 1030-291.1 WCND Shelbyville. Ky. 2500 KALE Richland, Wash. . 1000 KLIR Denver, Colo. I000d WTCH Shawano. Wis. 1000 WBZ Boston, Maas. 50000 WYLD New Orleans. La. 10000 KCTA Corpus WHO() Christi, Tex. 50000d WIDG St. Ignace, Mich. 5000 Orlando, Fla. 50000 KTWO Casper, Wyo. 10000 W1OR South Haven, Mich. I000d 970-309.1 WDWD Dawson. Ga. I000d WCPC Houston, Miss. 50000d WERH Hamilton, Ala. 5000d WGML Hinesville, Ga. 250d 1040-288.3 KSMW Aurora, Mo. 500d WTBF Troy. Ala. 5000 KTRG Honolulu, Hawaii 5000 KVSH Valentine, KHVH Honolulu. Hawaii 5000 Nebr. 5000d KVWM Show Low, Ariz. 5000d WCAZ Carthage. 111. I000d WHO Des Moines, WFNC Fayetteville, N. C. 10000 WITZ Jasper, Iowa 50000 KNEA Jonesboro, Ark. I000d Ind. 1000d 1(I X L Dallas, Tex. 1000d WCIT Lima, Ohio 250d I(BIS Bakersfield. Calif, 1000 WERK Muncie, Ind. 250d WNAL Nelsonville. O. KCHV Coachella, Calif. 5000 ICAYL Storm Lake. Iowa 250d 1050-285.5 KGRL Bend, Oreg. I000d KBEE Modesto, Calif. 1000 I(RSL Russell. Kans. 250d KWRC Woodburn, Ore, I000d KFE,L Pueblo. WNNR New Orleans, La. W RFS Alexander City, Ala. 1000d Colo. 1000d 250d WCRI Scottsboro, WESA Charleroi, Pa. 250d WBOM Jacksonville, Fla. KRIH Rayville, La. 2500 Ala, 250d WGRP Greenville, Pa. I0000 WFLA Tampa. WCRM Clare. Mich. I(VLC Little Rock. Ark. 1000d Fla. 5000 250d l(TOT Bear Lake, WIPR San Juan, P.R. 10000 WIIN Atlanta, Ga. 5000d WABO Waynesboro, Miss. 250d Big Cal. 250d KIXZ Amarillo. Tex, 5000 WVOP Vidalia, Ga. 5000d It RMO Monett, Mo. 250d KOFY San Mateo, Calif. 1000d KTON Belton, Tex. 10000 KPUA Hilo. Hawaii 5000 KSVP Artesia. N.Mex. 1000 l(WSO Wasco, Calif. 1000d KATQ Texarkana, Tex. I000d KAYT Rupert, Idaho I000d WEEB Southern Pines, N.C.5000d WJSB Crestview. Fla. 1000d WNRG Grundy, Va. 5000d WMAY Springfield. Ill. 1000 WJEH Gallipolis, Ohio 1000d WIVY Jacksonville, Fla. I000d WFAW Ft. Atkinson. Wis. 500d WAVE Louisville, Ky. 5000 WTI G Massillon. Ohio 2500 WHBO Tampa. Fla. 250d WCSW Shell Lake, Wis. I(SYL Alexandria, La. 1000 KRI(T Albany, Oreg. 250d WRMF Titusville, Fla. 500d WCSH Portland, Maine 5000 WIBG Philadelphia, Pa. 50000 WAUG Augusta, Ga. 50000 950-315.6 WAMD Aberdeen, Md. 500 WVSC Somerset, Pa. 5000d WMNZ Montezuma, Ga. 250d WRMA Montgomery, WESO Southbridge, Mass, 1000d WPRA Mayaguez, P.R. 10000 WDZ Decatur, III. 10000 Ala. I000d WTCA Plymouth. KIBH Seward, Alaska 1000 WCKD Ishpeming. Mich. 5000d WLKW Providence. R.I. 50000 Ind, 250d KXJK Forrest City, Ark. 5000d WI(HM Jackson, Mich. 1000 WAICN Aiken, S.C. I000d KUPK Garden City, Kan. 5000d KFSA Ft. Smith, Ark. 1000 I(QAQ Austin, Minn. 5000 WNOX Knoxville, Tenn. 10000 WNES Central City, Ky. 5000 KAHI Auburn, Calif. 5000d WRI(N Brandon, Miss. KWAM Memphis, Tenn, 10000d KLPL Lake Providence, La. 250d KIMN Denver, Colo. 5000 1(00K Billings. Mont. 5000 KTRM Beaumont, Tex. 1000 I(CIJ Shreveport, La. 250d WLOF Orlando, Fla. 5000 KJLT No. Platte, Nebr, 5000d I(AML Kenedy-Karnes City, KVPI Villa Platte, La. 250d WGTA Summerville, Ga. 5000d I(VEG Las Vegas, Nev. 500d Tex. 250d WMSG Oakland. Md. 500d WGOV Valdosta. Ga. 5000 WJRZ Hackensack. N. J. 5000d ICNIN Wichita Falla, Tex. 10000 W QM R Silver Sprg., Md. 1000d KATN Boise. Ida. 5000d I(DCE Espanola. N. M. 10000 KDYL Tooele. Utah 1000d WPAG Ann Arbor, Mich. 5000d KLER Orofino, Idaho I000d WEBR Buffalo, N.Y. 5000 WNRV Narrows- KLOH Pipestone, Minn. 1000d WACR W G RT Chicago, Ill. 10000 WCHN Norwich, N.Y. 500d Pearishurg, Va. 5000d Columbus, Miss. 1000d WXLW Indianapolis, Ind. 50000 WRCS Ahoskie, N.C. I000d WANT Richmond, Va. I000d KMIS Portageville, Mo, 1000d KOEL Oelwein, la. 5000 WWIT Canton, N.C. I000d ISIS Sedalia, Mo. 1000d KJ RG Newton, Kans. 500d WDAY Fargo, N.Dak. 5000 1000-299.8 KLVC Las Vegas, Nev. 500d WYWY Barbourville, I(y. WREO Ashtabula. Ohio 5000 WFM1 Montgomery, Ala. 5000d WBNC Conway, N.H. I000d WAGM Presque Isle. Maine 5000 WATH Athens, Ohio I000d KMLO Vista, Cal. 10000 WSEN Baldwinsville. N.Y. 250d WXLN Potomac -Cabin John, Md. KAKC Tulsa, Okla. 1000 W '

92 RADIO-TV EXPERIMENTER

www.americanradiohistory.com kHz Wave Length W.P. kHz Wave Length W.P. kHz Wave Length W.P. kHz Wave Length W.P. KFIL Fergus Falls, Minn. 500d KFAB Omaha, Nebr. 50000 1160-258.5 1230-243.8 KNLY Ord. Neb. I000d WBT Charlotte, N.C. 50000 WMAP Monroe, N.C. 1000d WELX Xenia, O. WJJD Chicago, 111, 50000d WAUD Auburn, Ala. 1000 WBYB St. Pauls, N.C. 250d KEOR Atoka, Okla. KSL Salt Lake City. Utah 50000 WJBB Haleyville, Ala. 1000 WCOK Sparta. N.C. 250d KBND Bend, Oreg. 5000 WBHP Huntsville. Ala, 1000 W010 Canton. O. 5000d WJSM Martinsburg, Pa. 1170-256.3 WNUZ Talladega, Ala. 1000 KYW Philadelphia, Pa. 50000 WNAR Norristown. Penn. 50000d WCOV Montgomery, Ala. 10000 WTBC Tuscaloosa, Ala. 1000 WRJS San German, P. R. 250 WVJP Caguas. P.R. 250 KJNP North Pole. Alaska KIFW Sitka, Alaska 250 WALD Walterboro. S. C. 1000d WHIM Providence. R.I. 1000d KCBQ San Diego, Calif 50000 KSUN Bisbee, Ariz. 250 KGFX Pierre, S. D. 10000d WPHC Waverly, Tenn. I000d KLOK San Jose, Calif. 10000 KAAA Kingman, Ariz. 1000 WPHC Waverly, Tenn. I000d KDRY Alamo Heights, Tex. I000d KOHO Honolulu, Hawaii 1000 KRIZ Phoenix, Ariz. 250 WCIR Beckley, W.Va. I0000d WLBH Mattoon, Ill. 250d KATO Safford, Ariz.. 250 KHRB Lockhart, Tex. 1120-267.7 KSTT Davenport. Iowa 1000 KINO Winslow, Ariz. 1000 KRSP Salt Lake City, Utah 10000 WUST Bethesda, Md, 250d KV00 Tulsa. Okla. 50000 KCON Conway. Ark. 250 WLEO Ponce. P.R. 250 KFPW Ft. Smith, Ark. 1000 KMOX St. Louis, Mo. 50000 1000 1070-280.2 WWOL Buffalo, N.Y. 1000d KPUG Bellingham, Wash. 5000 KBTM Jonesboro. Ark. l(CLE Cleburne, Tex. 250d WWVA Wheeling. W.Va. sonna KCON Conway, Ark. 1000 WAPI Birmingham, Ala. 50000 WLI(E Waupun. Wls. I000d KGEE Bakersfield, Calif. 1000 KNX Los Angeles. Calif. 50000 KWTC Barstow. Calif. 1000 WIBC Indianapolis, Ind. 50000 1130-265.3 1180-254.1 KIBS Bishop, Calif. 1000 KILR Estherville, Iowa 250d KRDU Dinuba, Calif. 1000 WLDS Jacksonville, Ill. I000d KXO El Centro. Calif. 250 KFDI Wichita, Kans. 10000 KSDO San Diego. Cal. 5000d KDAC Ft. Bragg, Calif. 250 KHMO Hannibal. Mo. 5000 KOFI Kalispell. Mont. 50000 Angeles. Calif. 1000 KLEI Kailua, Hawaii 1000 WHAM Rochester. N.Y. 50000 KG FJ Los WKDR Plattsburgh, N. Y. KLEY Wellington, Kan, 250d KPRL Paso Robles, Calif. 1000 WNCT Greenville, N.C. 10000 KWKH Shreveport, La. 50000 KRUG Redding. Calif. 250 WHPE High Point, N.C. I000d WCAR Detroit, Mich. 50000 1190-252.0 KWG Stockton, Calif 1000 WKOK Sunbury. Penn. 10000 WDGY Minneapolis, Minn. 50000 KRDS Tolleson. Ariz. 250 KEXO Grand Junction, Colo. 1000 WMIA Arecibo, P. R. 5000 KBLR Bolivar, Mo. 250d KMCW Augusta, Ark. 250d KBRR Leadville, Colo. 250 WHYZ Greenville. S.C. 50000d WNEW New York. .N.Y. 50000 KEZY Anaheim, Calif 5000 KDZA Pueblo, Colo. I000d WFLI Lookout Mtn.. Tenn. 50000 WASP Brownsville. Pa. KNBA Vallejo. Calif. 250d KGEK Sterling, Colo. I000d WDIA Memphis, Tenn. 50000 KBGH Memphis. Tenn. I000d WGKA Atlanta, 6a. I000d WINF Manchester. Conn. 1000 KOPY Alice. Tex. 1000 WDTM Selmer, Tenn. 250d WRIP Roseville, Ga. 500d WGGG Gainesville, Fla. 1000 KNNN Frionx, Tex. KBGH Memphis, Tex. WOWO Ft. Wayne. Ind. 50000 WONN Lakeland, Fla 1000 KENR Houstdn, Tex. 5000 WISN Milwaukee, Wis. 50000 WANN Annapolis, Md. I0000d WMAF Madison, Fla. 1000 WKOW Madison. Wis. 10000 WKOX Fram'gham, Mass, 1000d WSBB New Smyrna Bch., 1140-263.0 KPAR Albuquerque, N. M. 1000d Florida 1000 1080-277.6 WLIB New York. N. Y. I000d WNVY Pensacola, Fla. 1000 WKAC Athens, Ala. 1000d KRAK Sacramento, Calif. 50000 WSML Graham, N. C. 250d WCNH Quincy, Fla. I000d KSCO Santa Cruz. Calif. 10000 KNAB Burlington, Colo. WIXE Monroe. N. C. WINO W. Palms Beach. Fla. 250 WTIC Hartford, Cdnn. 50000 WMIE Miami, Fla. 10000 K EX Portland. Oreg. 50000 WBIA Augusta, Ga. I000d WVCG Coral Gables. Fla. 10000 KGEM Boise, Idaho 10000 WRAI Rio Piedras. P.R. 500 WBLJ Dalton, Ga. 1000 WFIV Kissimmee, Fla. 250 WSIV Pekin. Ill. 5000d WBM1 San Juan. P.R. 10000 WXLI Dublin, Ga. 1000 WJOE Pqrt St. Joe. Fla. I000d WAWK Kendallville, Ind. 250d KLIF Dallas, Tex. 50000 WFOM Marietta, Ga. 1000 WBIE Mbrietta, Ga. I0000d KNEI Waukon, Iowa 250d W SO K Savannah, Ga. 1000 KBIL Liberty, Mo. 500d WPOK Pontiac, 111. 1000d 1200-249.9 WAYX Waycross, Ga. 1000 WNW1 Valparaiso, Ind. 5000d KPWB Piedmont. Mo. I000d KBAR Burley, Idaho 1000 IOOOd WOAI San Antonio. Tex. 50000 KOAK Red Oak. la. KLPR Oklahoma City, Okla. KORT Grangevilie, Ida. 1000 WKLO Louisville. KY. 5000 WITA San Juan, P.R. 10000 KRXK Rexburg, Idaho 1000 WOAP Owosso, Mich. 1000d (SOD Sioux Falls. S.Dak. 10000 1210-247.8 WJBC Bloomington, Ill, 1000 KGCL East Prairie, Mo. KORC Mineral Wells, Tex. 250d (ZOO Honolulu, Hawaii 1000 WQUA Moline. III. 1000 WUFO Amherst, N.Y. I000d WRVA Richmond. Va. 50000 WILY Centralia, Ill. IOOOd WHCO Sparta, Ill. 250 WEWO Laurinburg. N.C. 5000d WKNX Saginaw, Mich. I0000d WJOB Hammond. Ind. 1000 WWDR Murfreesboro, N.C. 500d 1150-260.7 WADE Wadesboro, N.C. 1000d WSAL Logansport, Ind. 1000 KNDK Langdon, N.D. WGEA Geneva, Ala. I000d WAVI Dayton. Ohio 250d WTCJ Tell City, Ind. 1000 WMVR Sidney, O. 250d WJRD Tuscaloosa. Ala. 5000 (GYN. Guymon, Okla. 10000 WBOW Terre Haute, Ind. I000d KW11 Portland. Oreg. 50000 KCKY Coolidge, Ariz. 1000 WCAU Philadelphia, Pa. 50000 KFJB Marshalltown, Iowa 1000 WEEP Pittsburgh, Pa. 50000 KXLR No. Little Rock, Ark. 5000 WHOY Salinas, P.R. WHIR Danville, Ky. I000d WLEY Cayey, P.R. 250 KRKD Los Angeles, Calif. 5000 WHOP Hopkinsvllle, Ky. 1000 KRLD Dallas. Tex. 50000 KJAX Santa Rosa, Calif. 5000 1220-245.8 WANO Pineville, Ky. 1000d WKBY Chatham. Va. I000d KGMC Englewood, Colo. I000d KLIC Monroe, La. I000d WCNX'Middletown, Conn. I000d WAQY Birmingham, Ala. I000d WBOK New Orleans, La. 1000d 1090-275.1 WDEL Wilmington, Del. 5000 WABF Fairhope, Ala. 1000 KSLO Opelousas, La. 1000 KVSA McGehee. Ark. I000d 250 KAAY Little Rock, Ark. 50000 WNDB Daytona Bch.. Fla. 1000 WBME Belfast, Me. WTMP Tampa. Fla. 5000d KLIP Fowler. Calif. 250d WADY Calais. Maine 1000d WQIK Jacksonville, Fia, 50000d KIBE Palo Alto. Cal. 5000d WWSD Monticello, Fla, I000d WFPM Fort Valley. Ga. 1000d WSJR Madawaska, Me. 1000 WJEM Valdosta, Ga. 1000d KKAR Pomona, Calif. 250d WITH Baltimore, Md. 1000d WBAF Barnesville, Ga. KFSC Denver. Colo. I000d WCRA Effingham, III. 1000 WGGH Marion, III. 5000d WCUM Cumberland, Md. 1000 WCDQ Hamden, Conn. I000d No. Adams. Mass. I000d W G LC Mendota. Ill. 250d WYFE Rockford, Ill. 500d WMNB WDCJ Arlington, Fla. I000d WESX Salem, Mass, 1000 KHAI Honolulu. Hawaii 5000 KYND Burlington. la. 500d WJPB Kissimmee, Fla. WFWR Ft. Wayne, Ind. KWKY Des Moines. Iowa 1000 WNEB Worcester. Mass. 1000 WOAH Miami, Fla. 250d WJEF Grand Rapids, Mich. 1000 I(NWS Waterloo, Iowa 1000d KSAL Salina. Kans. 5000 WSAF Sarasota, Fla. I000d WOLV Oonalsonville. La. WMST Mt. Sterling. KY. 500d WIKB Iron River. Mich, I000d WLOC Mumfordville, Ky. I000d WCLB Camilla. Ga. 1000d WMPC Lapeer. Mich. 250 WBAL Baltimore, Md. 50000 WPLK Rockmart, Ga. 500d WILD Boston. Mass. I000d WJBO Baton Rouge, La. 5000 WS00 Slt. Ste. Marie, Mich. 1000 WGHM Skowhegan, Maine 5000d WSFT Thomaston, Ga. 250d WSTR Sturgis, Mich. I000d WMUS Muskegon. Mich. I000d WLPO LaSalle, 250d WHMC Gaithersburg, Md. 1000 Ill. I000d WKLK Cloquet. Minn. 1000 WTAK Garden City, Mich. W K RS Waukegan, III. I000d Springs, Mo. WCOP Boston, Mass. .5000 KGHS loternat'I Falls, Minn. 250 KEXS Excelsior WSLM Salem, Ind. 5000d 1000 I000d WCEN Mt. Pleasant, Mich. 10100Ód KYSM Mankato, Minn. WKTE King, N. C. KJAN Atlantic, Iowa 250d KTGO Tioga, N.D. KASM Albany, Minn. KMRS Morris, Minn. 250 1000d KRMS Osage Beach. Mo. 1000d KOUR Independence, tows 250d KTRF Thief Riv. Falls, WMWM Wilmington. O. KOFO . Kans. 250d WKSP Kingstree. S.C. KSEN Shelby, Mont. 5000 Minn. 1000 I000d KDEF Albuquerque, N. M. 5000 WFKN Franklin, Ky. 250d KWNO Winona, Minn. I000d WENR Englewood, Tenn. KBCL Shreveport, La. 250d WJKM Hartsville. Tenn. 250d WRUN Utica, N.Y 5000 WCMA Corinth, Miss. 1000 WBAG Burlington, N.C. 1000d WLBI Denham Springs, La. 250d WHSY Hattiesburg, Miss. 1000 WGOC Kingsport. Tenn. , Utah I000d WGBR Goldsboro. N.C. 5000 WSME Sanford, Maine I000d WSSO Starkville, Miss. 1000 KANN Ogden, Hastings, Mich. 250d 1000 KING Seattle. Wash. 50000 W CU E Cuyahoga Falls, Ohio I000d WBCH WAZF Yazoo City, Miss. WIMA Lima, Ohio 1000 `WAVN Stillwater, Minn. 5000d KODE Joplin. Mo. 1000 KNED McAlester, Okla. 1000 WMOC Hazlehurst, Miss. 250d KLWT Lebanon. Mo. 250 1100-272.6 KAGO Klamath Falls. Oreg. 5000 KZYM Cape Girardeau, Mo. 250d KWIT Moberly. Mo. 1000 KFAX San Francisco, Calif. 50000 WHUN Huntingdon. Pa. 5000d KBHM Branson, Mo. I000d KBMN Bozeman, Mont. I000d KREX Grand Junction, Colo. WYNS Lehighton, Pa. I000d WKBK Keene, N.H. I000a (HON Hardin. Mont. 1000 50000 WKPA New Kensington, Pa. I000d WGNY Newburgh, N.Y. 5000d KXLO Lewiston, Mont. 1000 WLBB Carrollton. Ga. I000d WOIX Orangeburg, S.C. 5000 WSOQ N. Syracuse, N.Y. I000d KLCB Libby. Mont. 1000 WHLI Hempstead, N.Y. 10000d WTYC Rock Hill, S.C. 1000d WKMT Kings Mtn., N.C. 1000d KTNC Falls City, Nebr. 100 WKYC Cleveland. 0. 50000 WSNW Seneca. S.C. IOOOd WREV Reidsville, N.C. I000d KHAS Hastings. Neb. 1000 WGPA Bethlehem, Pa. 250d KIMM Rapid City. S.Dak. 5000d WENC Whiteville, N.C. 5000d KELY Ely. Nev. 250 WAPO Chattanooga, Tenn. 5000 KEYD Oakes, N.Dak. 1000d KLAV Las Vegas. Nev. 250 1110-270.1 WCRK Morristown, Tenn. 1000 WGAR Cleveland, Ohin 50000 KCBN Reno, Nev. 1000 WBCA Bay Minette. Ala. I0000d WTAW Bryan, Tex. 1000d WERT Van Wert, Ohio 250d WMOU Berlin, N.H. 1000d WBIB Centreville, Ala. I000d KCCT Corpus Christi. Tex. IOOOd KBLY Goldbeach, Oreg. I000d WTSV Claremont. N.H. 1000 KRLA Pasadena, Cal. 50000 KIZZ El Paso.Tex. I000d KAPT Salem, Ore. 1000 WCMC Wildwood, N.J. 1000 KPOP Roseville, Cal. KVIL Highland Park, Tex. I000d WJUN Mexico, Pa. I000d KALG Alamagordo, N. M. 1000 WALT Tampa, Fla. 50000d KJBC Midland, Tex. I000d WRIB Providence. R.I. I000d KOTS Deming, N.Mex. WGKA Atlanta, Ga. I000d KPNG Port Neches, Tex. 500d WFWL Camden, Tenn. 250d KYVA Gallup. N. Mex. 1000 WEBS Calhoun, Ga. 250d l(OLJ Quanah. Tex. 500d WCPH Etowah, Tenn. I000d KFUN Las Vegas, N.Mex. 250 KIPA Hilo. Hawaii 1000 KBER San Antonio, Tex. I000d KZEE Weatherford. Tex. 250d KRSY Roswell. N. Men. 1000 WMBI Chicago, Ill. 5000d KPUL Pullman, Wash. I000d KVLL Woodville, Tex. 250d WNIA Cheektowaga. N.Y. 500 WKDZ Cadiz. Ky. KAYO Seattle, Wash. 5000 WLSD Big Stone Gap. Va. I000d WENY Elmira. N.Y. 1000 WFCC Franklinton. La. 1000d KKEY Vancouver, Wash. 1000d WFAX Falls 'Church, Va. 5000d WIGS Gouverneur, N. Y. 1000 WUNN Mason, Mich. WABH Deerfield, Va. 1000d KASY Auburn, Wash. 250d WHUC Hudson, N. Y. 1000 WJML Petoskey, Mich. WELC Welch, W.Va. I000d KOZI Chelan, Wash. I000d WLFH Little Falls, N. Y. 1000 WKRA Holly Springs, Miss. I000d WAXX Chippewa Falls, WIs.5000d WRNE Wis. Rapids, Wis. 500d WFAS White Plains, N. Y. 1000

AUGUST -SEPTEMBER, 1968 93

www.americanradiohistory.com WHITE'S kHz Wave Length W.P. kHz Wave Lengfh W.P. kHz Wave Length W.P. W W NS Statesboro. Ga. 1000 WJMC Rice Lake, Wie. 1000 KWSH WewokaSeminole, WPAX Thomasville, Ga. 1000 KFBC Cheyenne, Wyo. 1000 Oklahoma 1000 WTWA Thomson, Ga. 250 KEVA Evanston, Wyo. 1000 KMCM McMinnville. Oreg. 1000 KVNI Coeur d'Alene. Idaho 1000 KASL Newcastle. Wyo. 250 WWYN Erie, Pa. 5000 KFLI Mountain, Home, Idaho 250 KRAL Rawlins. Wyo. 1000 WPHB Philipsburg, Pa. 5000d KMCL McCall, Ida. 1000 KTHE Thermopolis, Wyo. 1000 WISO Ponce. P.R. 1000 KWIK Pocatello, Idaho 250 WMUU Greenville, S.C. 5000d aoc WCRW Chicago, Ill. 1000 1250-239.9 WJOT Lake City. S.C. I000d WEDC Chicago, Ill. I000d KWYR Winner, S.Dak, 5000d WSBC Chicago, Ill. 1000 WZOB Ft. Payne, Ala. I000d WN00 Chattanooga, Tenn. I000d WEBO Harrisburg, Ill. 1000 kHz Wave Length W.P. WETU Wetumpka, Ala. 5000d WMCH Church Hill, Tenn. I000d WTAX Springfield. III. 1000 KSWW Wickenburg, Ariz. 500d WDKN Dickson, Tenn. I000d WSDR Sterling, III. 500 KHIL Willcox, Ariz. 5000d WCLC Jamestown, WSKY Asheville, N.C. 1000 Tenn, 1000d WHBU Anderson, Ind. I000d KFAY Fayetteville, Ark. I000d KSPL Diboll, Tex. WFAI Fayetteville, N.C. I000d KDEC Decorah, 1000d Iowa 000 KALO Little Rock, Ark, 1000 KPSO Falfurrias, Tex. 500d WMFR High Point. N.C. 1000 KW LC Decorah, Iowa 000 KHOT Madera, WISP Kinston, Calif. 500d KWFR San Angelo, Tex. I000d N.C. I000d l(BIZ Ottumwa, Iowa 000 KTMS Santa Barbara. Calif. 1000 WNNC Newton, N. C. 1000 Iowa KTUE Tulia, Tex. I000d KICD Spencer, 000 KDHI Twenty -Nine Palms. KTAE Taylor, Tex. WCBT Roanoke Rap., N. C. 1000 KIUL Garden City, Kans, 000 I000d California I000d WCHV Charlottesville. Va, 5000 KDIX Dickinson. N.Dak. 250 KAKE Wichita, Kans. 250 KMSL Ukiah, Calif. 500d WUBE Cincinnati. O. 1000d WI NN Louisville, I(y. 000 KICM WJ11 Christiansburg, Va, I000d Golden, Colo. I000d KWIQ Moses Lake, Wash. WCOL Columbus, Ohio 1000 WFTM Maysville, Ky. 000 WNER Live Oak, Fla, I000d I000d WIRO Ironton, 0. 1000 WPKE Pikeville, Ky. 100od WVVW Grafton. W.Va. 500 WDAE Tampa, Fla. 5000 WWIS Black WCWA Toledo. O. I000d WSFC Somerset, Ky. 000 WLYB Albany, Ga. I000d River Falls. KADA N. of Ada, Okla. 250 KASO Minden, La. 000 WYTH Madison. W le. 1000d Ga. I000d WEKZ Monroe, Wis, 1000d WBBZ Ponca City. Okla. 250 KANE New Iberia, La. 000 W IZZ Streator. III, 500d KVAS Astoria, Ore. 000 WCOU Lewiston, Maine WOCO Oconto, Wie. 000 WGL Ft. Wayne. Ind. 1000 KPOW Powell, Wyo. KRNS Burns. Ore. 000 WMKR Millinocket, Me. 000 WRAY Princeton, Ind. I000d 5000 KOOS Coos Bay, Ore. 000 WCEM Cambridge, Md. 000 KCFI Cedar Falls. Iowa 500d KRDR Gresham, Oreg. 000 WJEJ Hagerstown, Md. 000 KFKU Lawrence, Kans. 5000 1270-236.1 KYJC Medford, Oreg. 000 WHAI Greenfield, Mass. 250 WREN Topeka, Kans, 5000 WGSV Guntersville. Ala. 1000d KQIK Lakeview, Ore. 000 WOCB W. Yarmouth, Mass. 000 WNVL Nicholasvllle, 1(TOO Ky. 500 WZAM Prichard, Ala. I000d Toledo, Ore. 000 WATT Cadillac, Mich. 000 WICK Scottsville, I(y. 500d KBYR WBVP Beaver Pa. Anchorage. Alaska 1000 Falls, 000 WCBY Cheboygan, Mich. 000 WGUY Bangor. Maine 5000d KDJI Holbrook, Aril. 5000d WEEX Easton. Pa. 000 WJPD Ishpeming. Mich. 000 WKBO WARE Ware, Mass. 1000 KADL Pine Bluff. Ark, 5000d Harrisburg, Pa. 000 WJIM Lansing, Mich. I000d WXOX Bay City. Mich. 1000 KBLC Lakeport, WCRO Johnstown, Pa. 000 Calif. WMFG Hibbing, Minn. 1000 KBRF Fergus Falls, Minn. 1000 KGOL Palm Desert. WBPZ Lock Haven, Pa. 000 Cal. 500d KPRM Park Rapids. Minn. 1000 KCUE Red Wing, Minn. I000d KCOK Tulare, Calif. 5000d WTIV Titusville, Pa. 000 WJON St. Cloud, Minn. 1000 WHNY WNOG Naples, Fla. WNIK Arecibo. P.R. 000 McComb. Miss. 5000 500d WMPA Aberdeen, Miss. 1000 KBTC Houston, Mo. 1000d WHIY Orlando. Fla. WERI Westerly, R.I. 000 5000d WGRM Greenwood, Miss. 250 WKBR Manchester, N.H. 5000 WTNT Tallahassee, Fla. 5000 WAIM Anderson. S.C. 000 WGCM Gulfport, Miss. 1000 WMTR WNOK Columbia, S.C. I000d Morristown, N.J. 5000d WKRW Cartersville, Ga. 500d WMIS Natchez, Miss. 250 WIPS Ticonderoga, N.Y. I000d WHYD Columbus, Ga. 5000d WOLS Florence, S.C. 1000 KFMO Flat River. Mo. 1000 WFAG I

94 RADIO-TV EXPERIMENTER

www.americanradiohistory.com kHz Wave Length W.P. kHz Wave Length W.P. kHz Wave Length W.P , kHz Wave Length W.P. 5000 WDOD Chattanooga. Tenn. 5000 W 100V Wellston. Ohio 500d W 1X 1 Lancaster, Ky. 500d KW KW Pasadena. Calif. 5000 WELW Willou0hby, O. 500d WDSU New Orleans, La. 5000 I(VOR Colorado Springs, Colo. WDXI Jackson, Tenn. Oakgrove. La. I000d 5000 WBNT Oneida, Tenn. I000d I(POJ Portland, Oreg. 5000 KWCL WBLF Bellefonte, Pa. 500 WABK Gardiner, Me. WAVZ New Haven, Conn. 1000 ICZIP Amarillo, Tex. 1000d I Pa. 5000 Mass. 5000 WRKT Cocoa Beach, Fla. 5000 WRR Dallas, Tex. 5000 W R E Erie, WEIM Fitchburg, W LAT 5000 WFYC Alma, Mich. 5000d WFFG Marathon. Fla, 500 KOYL Odessa, Tex. I000d Conway, S. C. Minn. 5000 WSOL Tampa, Fla. 5000d I(BUC San Antonio, Tex. 5000 WFBC Greenville, S.C. 5000 WWTC Minneapolis, Tenn. 1000d KVOX Moorhead. Minn. 1000 WMTM Moultrie, Ga, 5000d WEEL Fairfax, Va. 5000 WAEW Crossville, Newport News, Va. 5000 WTRO Dyersburg, Tenn. 500d 1

AUGUST -SEPTEMBER, 1968 95

www.americanradiohistory.com WHITE'S kHz Wove Lengfh W.P. kHz Wave Length W.P. kHz Wave Length W.P.

WRWH Cleveland, Ga. 1000d WMOV Ravenswood, W.Va. 1000d WTOB Winston-Salem, N.C. 5000 WAVC Warner Robins, Ga. 5000d WBAY Green Bay. Wis. 5000 WPKO Waverly, Ohio 1000d KTOH Liban, Hawaii 5000 WISV Viroqua. Wis. 1000 KSWO Lawton, Okla. 1000 KRLC Lewiston, Ida. - WMNE Menomonie. Wis. 1000d KMUS Muskogee, Okla. 1000 Clarkston, Wash. 5000d KVRS Rock Springs, Wyo. 1000 KBCH Ocean Lake, Oreg. 1000d WXCL Peoria, III. 1000 KSRV . Oreg. 5000 WiBD Salem, III. 1000d 1370-218.8 WACB I(ittanning, Pa. 1000d g WIOU Kokomo, Ind. 5000 WMLP Milton, Pa. 1000d WBYE Calera, Ala, 1000d KRNT Des Moines, Iowa 5000 WAYZ Waynesboro. Pa. 1000d i(MAN Manhattan, Kans. 500d KAWW Heber Springs, Ark. 500d KTPA Prescott, Ark. WNRI Woonsocket, R.I. 1000d kHz Wave Length W.P. WLOU Louisville. Ky. 5000d 500d WAGS Bishopvilie, S.C. 1000d WSMB New Orleans, La. 5000 KREL Corona, Cal. 5000 KQCY Quincy, WGUS N. Augusta, S.C. 1000d KATL Mlles City, Mont. 1000 WHMI Howell, Mich. 500 Calif. 500d KOTA Rapid City. S.Dak. KEEN San Jose. Calif. 5000 5000 KYLT Missoula, Mont. 250 KDIO Ortonville, Minn. 1000d KFCB Redfield, S.Dak. 500d I(HUB Fremont. Nebr. 500 WCMP Pine City, Minn. 1000d KGEN Tulare, Calif. 1000d W K M K WYSH Clinton, Tenn. 1000d KGFW Kearney, Nebr. 1000 WKCU Corinth. Miss, 1000 Blountstown, Fla. 500d WGMM Osaba, Millington, Tenn, 500d KSID Sidney, Nebr. 1000 WKOZ Kosciusko, Miss. 5000d WWKE Fla. 5000d KJET Beaumont, Tex. 1000 WCOA Pensacola, Fla, 5000 KORK Las Vegas, Nev. 1000 KCHR Charleston, Mo. 1000d K B W D Brownwood, Tex. 1000 WAXE Vero Beach, Fla. 1000d KBET Reno, Nev. 1000 KBRX O'Neill. Nebr. I000d KCRM Crane, Tex. 100011 WDCR Hanover. N.H. 1000 WLNH Laconia. N.H. 5000d WLOP Jesup, Ga. 5000 KTSM El Paso, Tex. WFDR Manchester, 5000 WMID Atlantic City, N.J. 1000 W H W H Princeton, N.J. 5000 Ga. 1000d KMUL Muleshoe, Tex. 1000d KHAP Aztec, N.M. 1000d KABQ Albuquerque, N.M. 5000 WLOV Washington, Ga. I000d WPRC KBOP Pleasanton, Tex. 1000d KRRR Ruidoso, N. Mex. 1000 WCBA Corning. N.Y. 1000d Lincoln, III. 1000d WSYB Rutland, Vt. 5000 KKIT Taon, N.Mex. 250 WRNY Rome. N.Y. 500d WTTS Bloomington, Ind. 5000 WTVR Richmond. Gary. Va. 5000 KSIL Silver City. N.Mex, 1000 WBMS Black Mountain, N. C. WLTH Ind. 1000d KRKO Everett, Wash. 5000 WMBO Auburn, N.Y. 1000 500d KDTH Dubuque. Iowa 5000 KPEG Spokane, Wash. KGNO Dodge 5000d WENT Gloversville, N.Y. 1000 WHIP Mooresville. N.C. 1000d City. Kans. 5000 WMTD Hinton, W.Va. 1000d KALN Iola, Kans. 500d W I(SN Jamestown, N.Y. 250 WLLY Wilson, N.C. 1000d WBEL Beloit, Wis, 5000 WUSJ Lockport, N.Y. 250 KBMR,Bismarck, N. D. 500d WABD Ft. Campbell, Ky. 500d WMSA Massena, N.Y. 1000 WSLR Akron, 0. 5000 WGOH Grayson. Ky. 5000d 1390-215.7 WTKY Tompkinsville, Ky. 1000d WALL Middletown, N.Y. 1000 WCSM Celina, Ohio 500d Anniston, WIRY Plattsburgh, 1000 KAPB Mnrksville. La. 1000d WHMA AIa, 5000 N.Y. WCHI Chillicothe. Ohio 1000d KDQN DeQueen, Ark. WIRI Lenoir, N.C. 1000 KRHD Duncan, WDEA Ellsworth, Me. 5000d 500d Okla. 250 KAMO Rogers, Ark. 1000d WTSB Lumberton, N.C. 1000 KTLQ Tahlequah. Okla. 1000d WMHI Braddoeke Hte., Md. 500d W KI K Leonardtown. Md. 1000d KGER Long Beach, Calif. 5000 WOXF Oxford, N.C. 1000 KRVC Ashland, Oreg. I000d KCEY Turlock; WOOW Greenville, N.C. 1000 WWAM Cadillac, Mich. Calif. 5000 WORK York. Pa. 5000 KFML Denver, Colo 5000d WGNI Wilmington. N.C. 1000 WWBR WOHN Grand Haven, Mich. 500d Windber, Pa. I000d WUWU Gainsville, Fla. 5000d WAIR Winston-Salem, N.C. 250 WDAR Darlington, S.C. 1000d KSUM Fairmont, Minn. 1000 WMKT S. St. Paul. Minn. 500d WISK Americus, Ga. 5000d KGPC Grafton, N.Dak. 1000 WGSW Greenwood. S.C. 1000d WNUS Chicago. WNCO Ashland, O. 1000 WMGO Canton. Miss, 1000d III. 5000 WRKM Carthage, Tenn. 1000d WFIW Fairfield, 1000 WOUB Athens. Ohio 250 KCAR KWRT Boonville, Mo, 1000d III. Clarksville. Tex. 500d WJCD Seymour, Ind, IOOOd WIZE Springfield. Ohio 1000 KCRV Caruthersville, Mo. 1000d KTXJ Jasper, Tex. I000d KCLN Clinton. Iowa 1000d WSTV Steubenville, Ohlo 1000 KCOR San Antonio. Tex. 5000 KXLF Butte, Mont. 5000 Hugo. KAWL York. Nebr. 500d KCBC Des Moines, Iowa 1000 K1HN Okla. 250 WELT Bedford. Va. 1000d KNCI( Kans. KOCY Okla. City, Okla. 1000 WFLS WFEA Manchester, N.H. 5000 Concordia, 500d Fredericksburg. Va. I000d WANY Albany. Ky. 1000d KTOW Sand Springs, Okla. 500 WNVA Norton, Va, 5000d WELV Ellenville, N.Y. 500 Corvallis, Ore. 1000 WALK Patchogue, N.Y. 500d WKIC Hazard, Ky. 5000d KLOO WAVY Portsmouth, Va. 5000 KFRA Franklin, La. 500d KW V R Enterprise, Oreg. 250 WPD R Portage, Wis. 5000d WSAY Rochester, N.Y. 5000 WLTC Gastonia, WEGP Presque Isle, Me. 5000d KIHR Hood River, Oreg. 250 N.C. 5000d KJPW Waynesville. KBBR N. Bend, Ore. 1000d WTAB Tabor City, N.C. 5000d Mn, 1000d 1360-220.4 Grand Forks, WCAT Orange, Mass. 1000d WCVI Connellsville, Pa. 1000d KFJM N.D. 1000d WPLM Plymouth, WSAJ Grove City. Pa. 100 W W W B Jasper, Ala. 1000d WSPD Toledo, Ohio 5000 Mass. 5000 WLIQ Mobile, KVYL Holdenville. WCER Charlotte, Mich. 5000d WKRZ Oil City, Pa. 1000 Ala. 6000d Okla. 500d KAOH Duluth, WHAT Philadelphia, Pa. 1000 WMFC Monroeville, Ala. I000d KAST Astoria. Oreg. 1000 Minn. 500 WRAW Reading, Pa. 1000 WELR Roanoke, Ala. 1000d WOTR Corry, Pa. 1000 KRFO Owatonna, Minn, 500d WROA Gulfport, Miss. . 1000d WTRN Tyrone, Pa. 1000 KRUX Glendale. Ariz. 5000 WPAZ Pottstown. Pa. 1000d WBRE Wilkes-Barre, Pa. 1000 .KLYR Clarksville, Ark. 500d W KMC Roaring Sprgs., Pa. 1000d WQIC Meridian. Miss. 5000d WWPA Williamsport. Pa. loot KFFA Helena. Ark. 1000 WIVV Vleaues. P.R. 1000 KJPW Waynesville. Mo. 1000d WUNA Aquadilla, P.R. 250 KFIV Modesto, Cal. 5000 WKFD Wlekford, R.I. 500d KENN Farmington, N.Mex. 5000 WOKE Charleston, S.C. 1000 KRCK Ridgecrest. Calif. I000d WDEF Chattanooga, Tenn. 5000 KHOB Hobbs, N.Mex. 5000d W EO WRHI Rock Hill, S.C. 1000 KGB San Diego, Calif. W DX E Lawrenceburg. Tenn. 1000d K Poughkeepsie, N.Y. 5000 6000 Riverhead. WSSC Sumter, S.C. 1000 WDRC Hartford. Conn. 5000 WRGS Rogersville, Tenn. 10 00d WRIV N.Y. 1000d KIJV Huron, S. D. 1000 WOBS Jacksonville. Fla. 5000d KOKE Austin, Tex. 10 00d WFBL Syracuse.N.Y. 5000 WEED Rocky Mount, N.C. 5000 KRSD Rapid City, S.Dak. 1000 WKAT Miami Beach, KFRO Longview. Tex. 1 000 Fia. 5000 WADA Shelby, WBAC Cleveland. Tenn. 1000 WINT Winter Haven, 1000d KPOS Post, Tex. 10 OOd N.C. 1000 Fla. WJRM Troy, N.C. 500d WKRM Columbia, Tenn. 1000 WAZA Bainbridge. Ga. 1000d KSOP Salt Lake City. Utah 10 00d KLPM Minot. 5000 WGRV Greeneville. Tenn. 1000 WLAW Lawrenceville, Ga. 1000d WBTN Bennington, Vt. 10 00d N.Dak. WKGN Knoxville, Tenn. 1000 WMAC Metter, 50 00d WOHP Bellefontaine, Ohio 500d Ga. 500d WHEE Martinsville. Va. WMPO WLOK Memphis. Tenn. 1000d WIYN Rome. Ga. 500d WJWS South Hill, Va. 50 00d Middleport- Pomeroy, 5000d WCDT Winchester, Tenn. 1000 WLBK DeKalb. III. 1000d KPOR Quincy. Wash. 10 00d 0. WFMJ Youngstown, Ohio 5000 KWI(C Abilene. Tex. 1000 WVMC Mt. Carmel, III. 500d WEIF Moundsville, W. Va. 10 OOd Burnett, Tex. 250 KCRC Enid. Okla. 1000 KTSL WGFA Watseka, Ill. 1000d WCCN Nelllsville, Wis. 50 00d Salem, KAND Corsicana, Tex. 1000 K H A K KSLM Oreg. 5000 Cedar Rapids, Iowa I000d KVWO Cheyenne, Wyo. I 000 WLAN Lancaster, Pa. 5000 KSET El Paso. Tex. 250 KRCB Council Bluffs, Iowa WRSC KLBK Lubbock. Tex. 1000 KXGI State College, Pa. I000d Ft. Madison,'Iowa I000d 1380-217.3 WISA Isabella, P.R. 1000 KRBA Lufkin. Tex. 1000 KSCJ Sioux Iowa City, 5000 WRAB Arab, Ala. 1000d WHPB Belton. S.C. 1000d KPDN Pampa. Tex. 250 KBTO El Dorado. Kans. 500d NOLE Port Arthur, TeX. 250 WGYV Greenville. Ala. 1000d WCSC Charleston. S.C. 5000 WFLW Monticello. Ky. 1000d KJAM Madison. S.D. KTEO San Angelo, Tex. 250 KDXI Mansfield. WVSA Vernon, Ala. 5000d La. 1000d KDXE N. Little Reek. Ark. 1000d WYXI Athens, Tenn. 500d KVIC Victoria, Tex. 250 KNIR New Iberia, 1000d La. KBVM Lancaster, Calif. 1000d WTJS Jackson. Tenn. 5000 WTWN St. Johnsbury. Vt. 1000 KTLD Tallulah. La. 500d WSTA Charlotte Amalie. V.I. 250 KGMS Sacramento. Calif. 1000 WMCT Mountain City, Tenn. WEBB Baltimore, Md, 5000d KSBW Salinas, El Campo, Tex, WKEY Covington. Va. 1000 Lynn, Calif. 5000 KULP 500d WLYN Mass. 1000d KFLJ Wglsenburg. Colo. I000d KBEC Waxahachie, Tex, 500d WHAP Hopewell, Va. 1000 WKYO Caro, Mich. 500d WOWW Naugatuck, Conn. 5000 KOHN Logan, Utah 1000 WJMA Orange, Va. 1000 WKMI Kalamazoo, Mich. 5000 KAGT Anacnrtes. Wash. 250 WAMS Wilmington, Del. 5000 WEAM Arlington, Va. 5000 1(LRS Mountain Grove. Mo. 1000d Lake WWOD Lynchburg. KSM K Kennewick, Wash. 1000 KICX McCook. WLIZ Worth. Fla. 500d Va. 5000 Nebr. 1000d WQXQ Orpiond Bch.. Fla. 1000d WKLP Keyser, W.Va. 1000d KAPA Raymond. Wash. 1000 WNNJ Newton, N.J. I000d KM EL Wenatchee. Wash. 25n WWBZ WLCY St. Petersburg, Fla. 5000 KBBO Yakima, Wash, 1000 Vineland, N.J. ,1000 WAOIO Atlanta. Ga. 5000 WHAR Clarksburg. W.Va. 1000 W KOP Binghamton, N.Y. 5000 WEPM Martinsburg, W. Va. 1000 WSIZ Ocilla, Ga. 5000d 1400-214.2 WMNS Olean. N.Y. 1000d KPO1 WMON Montgomery, W.Va. 250 Honolulu. Hawaii 5000 WMSL Decatur. Ala. 1000 WCHL Chapel Hill, N.C. 1000 WWCM . Ind. 500d I(EYZ Williston, N.D. 5000 WXAL Demopolis, Ala. 1000d WLDY Ladysmith. Wis. 1000 WKJG Ft. Wayne, Ind. 5000 WSAI Cincinnati. Ohio 5000 WFPA Ft. Payne, Ala. 1000 WRIT Milwaukee Wis. 1000 KCI M Carroll. Iowa 1000 WILD Homewood, WWOW Conneaut, Ohio 50Gd KCII Washington. Iowa 500d Ala. 1000 KSGT Jackson, Wyo. 250 KUIK Hillsboro. Oreg, WJHO Opelika, Ala. 1000 Wheatland, 250 1000d KUDL Fairway. Kan. 5000 KYCN Wyo. WMCK McKeesport, Pa. 5000 KSEW Sitka, Alaska 1000 KWOR Worland, Wyo. 1000 WMTA Central City, Ky. 500d KCLF WPPA Pottsville, Pa. 5000 WWKY Winchester. KY. 1000d Clifton, Ariz. 250 WELP Easley, S.C. I000d KXIV Phoenix, Ariz. 1000 1350-222.1 WYNK Baton Rouge. La. 500d KTUC Tucson, WLCM Lancaster, S.C. 1000d W KT1 Farmington, Me. 1000d Ariz. 250 KVOY Yuma. Ariz. 250 WELB Elba. Ala. 1000d WBLC Lenoir City, Tenn. Port 1000 WPHM Huron. Mich. I(ELD El Dorado, Ark. 1000 WGAD Gadsden, Ala. 5000d WNAH Nashville. Tenn. 1000d WPLB Mich. 1000 Greenville. KCLA Pine Bluff, 1000 KLYD Bakersfield, Calif. 1000d 1(RAY Amarillo, Tex. 500d KLIZ Brainerd. Minn. 5000 Ark, KCKC San Bernardino. Cal. 5000 KACT Andrews. Tex. 1000d KWYN Wynne, Ark. 1000 KAGE Winona, Minn. 1000 Berkeley, KSRO Santa Rosa, Calif. 5000 K W BA Baytown, Tex. 1000 WOLT Indianola. Miss. 500d KPAT Calif. 1000 KKAM Pueblo. Colo. KRYS Corpus Christi. Tex. 1000 KREO Indio. Calif. 250 KWK St. Louis. Mo. 5000 KQMS Redding, 250 WNLK Norwalk, Conn. 1000 KXOL Ft. Worth. Tex. 5000 Holdredge, 500 Calif. KUVR Nebr. KSLY San Luis Obispo, 250 WINY Putnam, Conn. 1000d WBOB Galax. Va. 1000d WBBX Portsmouth, N.H. 1000 Cal. WEZY Cocoa, Fla. 1000 WHBG Harrisonburg, Va, 5000d WAWZ Zarephath, N.J. 5000 K010 Santa Paula. Cal. 250 WDCF Dade City, Fla, 1000d KFDR Grand Coulee, Wash. 1000d WFSR Bath, N.Y. 500d KHOE Truckee, Calif. 1000 WCAI Ft. Myers, Fla. I000d KMO Tacoma. Wash. 5000 WBNX New York, N.Y. 5000 KU KI Ukiah, Calif. 1000 WBSG Blackshear, Ga. 500d WHJC Matawan, W.Va. I000d WLOS Asheville, N.C. 5000 KONG Visalia, Calif. 1000

96 RADIO-TV EXPERIMENTER

www.americanradiohistory.com kHz Wave Length W.P. kHz Wave Length W.P. kHz Wave Length W. P. kHz Wave Length W.P. 1000d 250 WGAP Maryville, Tenn. 1000d I(JST Joshua Tree. Cal. 1000d I(COH Houston, Tex. KRLN Canon City, Colo. 5000 250 Shelbyville. Tenn. 1000 KSTN Stockton. Calif. 5000 KLO Ogden, Utah KDTA Delta, Colo. WHAL Va. 1000d 1

AUGUST -SEPTEMBER, 1968 97

www.americanradiohistory.com r

WHITE'S kHz Wave Length W.P. kHz Wave Length W.P. kHz Wove Length W.P. WHSC Hartsville. S.C. 1000 KXOA Sacramento, Calif. 5000 WMS/ Sylva. N.C. KBFS Belle Fourche. 5000 S. Dak. 1000 KKEP Estes Park, Colo, 500d WYDK Yadkinvllle. N.C. 1000d KYNT Yankton, S. D. QaLao 1000 WMMW Meriden, Conn. 1000d WHBC Canton, Ohio 5000 WLAR Athens. Tenn. 1000 WRBD Pompano Beach, Fla. 5000 WCIN Cincinnati, Ohio WMOC Tenn. 5000 Chattanooga. 1000 WCWR Tarpon Springs. Fla. 5000d WTRA Latrobe, Pa. 500d WDSG Dyersburg, Tenn, 1000 WAAG Adel, Ga. I000d WDAS Philadelphia. WSMG Greeneville, Pa. 5000 Tenn. 250 WDOL Athens, Ga. 1000d WISL Shamokin, Pa. 1000 aog WLAF LaFollette. Tenn. 1000 WCLA Claxton. pensburg, WGNS Ga. 1000 WSHP Shi Pa. 500d Murfreesboro, Tenn. 1000 WRGA Rome, Ga. 5000 W M D D Fajardo, P.R. 5000 KAYC Beaumont. Tex. 1000 WMPP KSOR Waterton, KBEN Chicago Heights, Ill, I000d S.D. 1000d kHz Wave Length W.P. Carrizo Sores.. Tex. 250 WMBD Peoria. III. 5000 WJFC Jefferson City. Tenn. 500 I(CTI Gonzales. Tex. 250 WHUT Anderson, Ind. I000d WMQM Memphis, Tenn. 5000d WBYG Savannah, Ga. 1000 KMBL Junction, Tex. 1000 KTR1 Sioux WJLE Smithville, 1000d KCYL Lampasas, City. Iowa 5000 Tenn; WVLD Valdosta, Ga. 1000 Tex. 1000 KWVY Waverly, Iowa 1000d KBOX Dallas, Tex. 5000 KMHT Marshall, Tex. 1000 KVSI Montpelier, Ida. 1000 KARE Atchison. Kans. 1000 KLVL Pasadena, Tex. 1000 KEEP KAMY McCamey, Tex. 250 Twin Falls. Idaho 1000 KNET Palestine. KLIB Liberal, Kans, 1000d KAPE San Antonio, Tex. 500d WVON Cicero. III. 1000 Tex. 250 WSAC Fart Knox, Ky. 1000d i(ONI Spanish Fork, Utah I000d W K EI Kewanee. KSNY Snyder, Tex. 000 KTOL Farmersville, WCFR Springfield, III. 500 KURA Moab, La. 1000d Vt. 1000d WCVS Springfield, III. 1000 Utah 000 KPLC Lake Charles, La. 5000 WBBL Richmond, Va. 5000 WLYV KEYY Provo. Utah 250 WLAM Lewiston, Ft. Wayne, Ind. 500 KOXU St. George. Maine 5000 WLEE Richmond, Va. 5000 WXVW Jeffersonville, Ind. 1000 Utah 000 WJDY Salisbury. Md. 5000d WBLU Salem. Va. 5000d WASK Lafayette, WSNO Barre, Vt. 000 WTTR Westminster, KOOD Ind. 1000 WTSA Brattleboro, Vt. Md. 1000d Lakewood Center, Wash. WAOV Vincennes. Ind. 1000 000 WSRO Marlborough, Mass. I000d 1000d K-LWW Cedar WFTR Front Royal, Va. 000 WNBP KVAN Rapids. la. 250 WENZ Highland Newhuryport, Mass. 500d Vancouver, Wash. 1000d KYET Payette, Ida. 250 Springs. WKMF Flint, Mich. 5000 WISM Madison, Wis. 5000 KWBW Hutchinson. Kans. 1000 Va. 00' WKLZ Kalamazoo. KRAE Cheyenne. Wyo. I000d WREL Lexington. 000 Mich. 500d WTCO Campbellsville, Ky. 1000 Va. KANO Anoka. Minn. I000d WWXL Manchester, Ky. 1000 WMVA Martinsville, Va. 000 WCHJ Brookhaven. Miss. WLPM Va. 000 I000d 1490-201.2 WPAD Paducah, Ky. 1000 Suffolk. WNAU New Albany, 500d KBKW Aberdeen, Wash. 000 Miss. WANA Anniston. Ala. 250 WLKS W. Liberty, Ky. 1000 KGHM Brookfield, Mo. 500d KSI G Crowley, KCLX Colfax, Wash. 000 WAIF Decatur, Ala. 1000 La. 1000 KTCB Malden. Mo. 1000d WRLD KNOC Natchitoches, La. 1000 KONP Port Angeles. Wash. 250 WTKO Ithaca, Lanett, Ala. 1000 KAYE Puyallup, Wash. 000 N.Y. 1000d WHBB Selma, Ala. 1000 WNPS New Orleans. La. 250 WPDM Potsdam, N.Y. I000d KYCA WLKN Lincoln. Me. I000d WPAR Parkersburg, W. Va. 000 Prescott, Ariz. 1000 KFIZ Fond du Lac, Wis. WBIG Greensboro, N.C. 5000 KAIR Tucson. WRKD Rockland. Maine 250 000 Ariz. 250 W DLB Marshfield, Wis. 000 WPNC Plymouth, N.C. I000d KXAR Hope, Ark. 1000 WKTQ South Paris, Maine 1000 WTOE Spruce Pine, N.C. I000d KDRS Paragould, WTBO Cumberland, Md. WRCO Richland Center, Wla. 000 Ark. 1000 1000 WOHO Toledo. Ohio 1000 KOTN Pine Bluff. Ark. 1000 WTHU Thurment Md. 100 KBBS Buffalo. Wyo. I(VOW Riverton, Wyo. 000 KVLH Pauls Valley, Okla. 250d KXRJ Russellville, Ark. 1000 WMAS Springfield. Mass. 1000 KVIN Vlnita.Okla. 500d KWAC Bakersfield, WATZ Alpena Township, Calif. 1000 KRAF Reedeport, Oreg. 5000d KPAS Banning. 250 Michigan 1000 1460-205.4 Calif. WSAN Allentown. Pa. 5000 KICO Calexico. Calif. 250 WHTC Holland, Mich. 1000 WFMH Cullman. Ala. 5000d WFAR Farrell, Pa. I000d KRKC Iron King City, Calif. 1000 WMIQ Mtn.. Mich. 250 WPNX Phenix City, Ala. 5000 W W ML Portage. Pa. 500,1 KTOB Petaluma, Calif. 1000 WIBM Jackson, Minh. 1000 KZOT Marianna, Ark. 500 WQXL Columbia, S.C. 5000d KBLF WKLA Ludington, Mich. Red Bluff, Calif. 1000 1000 KCCL Paris. Ark. 500d WINK Georgetown. S.C. I000d KDB Santa Barbara, Calif. 1000 WNBY Newberry, Mich. 1000 KTYM Inglewood. Calif. 5000 WEAG Alcoa, Tenn. 1000d KOWL So. Lake Tahoe. Cal. 250 WHLS Port Huron, Mich. 1000 KDON Salinas. Calif. 5000 WVOL Berry Hill. Tenn. 5000 KSYC Yreka. KATE Albert Lea, Calif. 1000 Minn. 250 KVRE Santa Rosa, Calif. I000d KRBC Abilene. Tex. 5000 KBOL Boulder, Colo. 1000d KBUN Bemidji, Minn. 1000 KYSN Colo. Sprgs., Colo. 1000 KDHN Dimmitt. Tex. 500d KGUC Gunnison, KBMW Wahpeton. Colo. 250 N.D.. WBAR Bartow, Fla. I000d KWRD Henderson. Tex. 500d KCMS Manitou Springs, Calo. 500 Breckinridge, Minn. I000d WZEP DeFuniak Springs. KCNY Marcos, KOLR WELY Ely, Minn. San Tex. 250d Sterling. Colo. 250 Florida I000d WTZE Tazewell. Va. I000d WGCH Greenwich. Conn. 250 KFAM St. Cloud. Minn. 1000 WMBR Jacksonville, Fla. 5000 KELA Centralia. WTRL Bradenton. Fla. 250 WROX Clarksdale, Miss. 1000 WDYZ Buford, Ga. 5000d WCJU Columbia, Chehalis, Wash. 5000d WJBS Deland, Fla. 1000 Miss. 250 WPNX Columbus. Ga. 1000 KSEM Moses Lake, Wash. 5000 WIRA Ft. Pierce, Fla. 250 WJXN Jackson, Misa. 250 WROY Carmi, Iii. I000d KAPS Mount Vernon. Wash. 500d WCOF Immokalie, Fla. 250 WOKK Meridian. Miss. 1000 WIXN Dixon, III. 1000d WWHY Huntington, W.Va. 5000d WMBM Miami Beach, Fla. 250 WNAT Natchez. Miss. 250 WRTL Rantoul, III. 250d WBZE Wheeling. W.Va. 500d WSRA Milton, Fla. 1000 WROB West Point. Miss. 1000 WKAM Goshen. Ind. 1000 WBKV West Bend, Wis. 1000d WPXE Starke. Fla. 1000 KFTW Fredericktown, Mo. 1000 HDes WTTB Vero Beach. Fla. 1000 WMBH Joplin. Mo. 1000 KSO Moines, Iowa 15Ó0Ó5000 RX 1480-202.6 WSIR Winter Haven. Fla. 500 KI Kirksville, Mo. 1000 KCRB Chanute, Kans. 1000d WMOG Brunswick. Ga. 1000 KOKO Warrensburg, Mo. 1000 WRVK Mt. Vernon. Ky. 500d WARI Abbeville, Ala, 1000d WMJM Cordele, Ga. 1000 KWPM West Plains, Mo. 1000 WXOK Baton Rouge, WLPH Irondale, Ala. 5000d WMRE Monroe, I

98 RADIO-TV EXPERIMENTER

www.americanradiohistory.com Wave Length W.P. kHz Wave Length W.P. kHz Wave Length W.P. kHz Wave Length W.P. kHz 1000 KOSG Pawhuska, Okla. 5000d WERX , Mich. 50051 KCAN Canyon, Tex. WEMJ Laconia, N.H. 000 KWBC Navasota, TeX. 25011 WLDB Atlantic City. N. J. 000 KPNW Eugene, Ore. 50000 KSMM Shakopee, Minn. 500d P.R. 250 KPCR Bowling Green, Mo. 250 W KY E Bristol, Tenn. 1000d KRSN Los Alamos, N.Mex. 000 W M NT Mandl, Tenn. 250d WEAC Gaffney, S. C. 1000d KMAM Butler, Mo. 500d WPTN Cookeville, KRTN Raton, N.Mex. 000 WTPI Cookville. Tenn. 250d WCSS , N.Y. 000 WDEB Jamestown. Tenn. 1000d KLOL Lincoln, Neb. 5000d Trenton, Tenn. 250d WCKY Cincinnati, Ohio 50000 WKPT Kingsport, Tenn. 10000d WBTA Batavia, N, Y. 250 WTNE Comanche, Tex. 250d WKNY Kingston, N.Y. 000 KWFA Markle. Tex. 250d KWLG Wagoner, Okla. Tex. 250 WHYP North East, Pa. I000d KRGO Salt Lake City. Utah WICY Malone, N.Y. 000 KTXO Sherman, I0000d 000 Tex. 500 WMBT Shenandoah. Pa. 250d WDLC Port Jervis, N. Y. KANI Wharton, Vinton, Va. I0000d Syracuse, N. Y. 000 WUPR Utuado, P.R. I000d WKBA WOLF 1000 WVAB Bch., Va. 5000d WSSB Durham, N. C. 000 1510-199.1 WASC Spartanburg, S.C. Virginia KGTN Georgetown. Tex. I000d WXVA Charlestown, W.Va. 500d WFLB Fayetteville, N.C. 000 KALF Mesa, Ariz. I0000d I000d 000 KGBT Harlingen. Tex. 50000 KOQT Bellingham. Wash. WLOE Leaksville, N.C. KSOM Ontario, Cal. 10000 Wash. 1000d WRNB New Bern, N.C. 000 KCLR Balls. Tex. 5000d KGAR Vancouver, KIRV Fresno, Cal. 500d 250 WMIR Lake Geneva. Wis. 1000d WRMT Rocky Mount. N. C. 000 Calif. I000d WQVA Quantico, Va. KTIM San Rafael, Cheyenne, Wy. 10000 WMAD Madison, Wis. 5000d WSTP Salisbury, N. C. 000 KOKO Littleton. Colo. 1000 KCHY WSVM Valdese. N.C. 000 WNLC New London, Conn. 10000 WHSL Wilmington, N. C. 000 WWBC Cocoa, Fla. 250d 1540-195.0 1560-192.3 KNDC Hettinger, N.D. 000 WINU Highland, Ill. 250d WANL Lineville, Ala. WAGC Centre. Ala. 1000d KOVC Valley City. N. Dak. 000 500d Ariz. I0000d KDDA Dumas, Ark. 000 S./MC Joliet, Ill. KASA Phoenix, WBEX Chillicothe, Ohio Macomb. I000d Los Calif. 50000 KBIB Monette, Ark. 250d 000 W KAI Ill. KPOL Angeles, WJMO Cleveland Hghts., 0. KIFG Iowa Falls, Iowa I000d WBSR Pensacola, Fla. 1000 KPMC Bakersfield. Calif. 10000 WOHI E. Liverpool. Ohio 250 KANS Lamed. Kan. I000d WJGA Jackson, Ga. KIQS Willows. Calif. 250d WMOA Marietta, Ohio 000 KPBC Port Sulpher. La. 500d WOGA Sylvester, Ga. 1000d WTAI Eau Gallia. Fla. 5000d WMRN Marion, Ohio 000 Fla. 1000 WMEX Boston, Mass. 50000 W SM 1 Litchfield. III. 1000d WYSE Inverness, KWRW Guthrie. Okla. 100 Jackson, Mich. 5000d 250d WCIK Gordon, Ga. 5000d 000 WIC° WBNL Boonville, Ind. KBIX Muskogee, Okla. WLKM Three Rivers, Mich. 500 WADM Decatur, Ind 25011 WBYS Canton. III. 250d KBKR Baker. Oreg. 000 Miss. 1000 250d Paoli, Ind. 250d 000 WKPO Prentiss, WL01 LaPorte, Ind. WVAK KRNR Roseburg, Oreg. KCCV Independence, Mo. 1000d WCBK Martinsville, Ind. 250d WRIN Rensselaer, Ind. I000d KBZY Salem. Oree. 000 KTTT Columbus, Nebr. 500d KXEL Waterloo, Iowa 50000 I(SWI Council Bluffs, Iowa I000d WESB Bradford, Pa. 000 Dover, N.J. 1000 250d Abilene. Kan. 250d 000 WRAN KNEX McPherson, Kans. KABI WAZL Hazleton, Pa. WJIC Salem. N.J. 250d Parsons. Kans. 250d WPHN Liberty, Ky. 250d WARD Johnstown, Pa. 000 KLKC 10000 WPUT Brewster, N. Y. I000d KCTO Columbia, La. I000d WDXR Paducah. Ky. WGAL Lancaster, Pa. 000 Greensboro, N.C. I000d 1000 WBGS Sidell, La, I000d 000 WEAL WDON Wheaton, Md. WBCB Levittown, Pa. N. C. 500d 250d WSMD La Plata, Md. 1000d 000 WBZB Selma. WMRR Marshall. Mich. WMRF Lewiston, Pa. WLKR Norwalk, O. I000d WTPS Portage, Mich. 1000d IOOOd WLEF Greenwood. Miss. WMGW Meadville, Pa. WAHT Annvllle-Cleona, Pa. 5000d KBXM Kennett, Mo. 250d WMIC Sandusky, Mich. I000d WNBT Wellshero, Pa. 1000 Penn. 250d KBEW Blue Earth, Minn. 1000 500 WPSL Monroeville, W KX R Exeter. N.H. WSIB Beaufort, S.C. WSJW Woodruff. S.C. WPTR Albany. N.Y. 50000 KQYX Joplin, Mo. 250d WGCD Chester. S.C. I000d 50000 1000d Macon, Mo. 250d 1000 WLAC Nashville. Tenn. WPAW E. Syracuse, N.Y. KLTI WMRB Greenville. S.C. KCTX Childress, Tex. 250d WKYK Burnsville. N.C. I000d KTUI Sullivan, Mo. 1000d KORN Mitchell, S.Dak. 1000 500d I000d N.Y. 50000 1000 KABH Midland. Tex. WRPL Charlotte, N.C. WQXR New York, WOPI Bristol, Tenn. Mineola. Tex. 250d N.C. I000d WTNS Coshocton, Ohio 1000d Chattanooga, Tenn. 1000 (MOO WIFM Elkin. WDXB KROB Robstown, Tex. 500d WBCO Bucyrus. Ohio 500d WCNW Fairfield. 0. 5000d WROL Fountain City, Tenn. 1000 250d I000d 5000d 1000 KSTV Stephenville, Tex WABQ Cleveland. Ohio WTOD Toledo, Ohio WJJM Lewisburg, Tenn. WLGN Logan. Utah WNIO Niles, Ohio 500d KWCO Chickasha, Okla. 1000 WDXL Lexington, Tenn. 1000 Wash. 250 P.R. 5000 250 KURB Mountlake Terrace, WBTC Ulrichviile, 0. WRSJ Bayamon, KNOW Austin, Tex. a 50000 I000d I0000d 250 KGA Spokane. Wash. KZEL Eugene. Ore. WAGL Lancaster, S.C. KIBL Beeville, Tex. WAUK Waukesha, Wis. 10000d WRCP Philadelphia, Pa. 50000d WWGM Nashville, Tenn. I0000d KBST Big Spring, Tex. 1000 I000d Tenn. 250d 250 WPTS Pittston, Pa. WBOL Bolivar, KHUZ Borger, Tex. 1000d Tex. 500d Tex. 250d 1520-197.4 WPME Punxsutawney. Pa. (CAD Abilene, KNEL Brady, Newport, R.I. I000d KEGG Daingerfieid, Tex. 100011 KWMC Del Rio, Tex. WAOA Opelika, Ala. 5000d WADK 250d Tex, 250 Hollister. Cal. 500 W K K R Pickens, S.C. I000d KHBR Hillsboro, Tex. (SAM Huntsville. KMPG 500d Port Lavaca. Tex. 500d KVOZ Laredo. Tex. 250 KM FB Mendocino. Cal. I000d WBFJ Woodbury, Tenn. (GUL KBUY Ft. Worth, Tex. 50000d KGHO Hoquiam, Wash. I000d KZZN Littlefield. Tex. 1000 KACY Port Hueneme. Calif. 10000 250d KPLT Paris, Tex. 1000 WTLN Apopka, Fla. ( CRC Galveston. Tex. 1000 KDFL Sumner, Wash. 1000 KEDA San Antonio. Tex. WFSP Kingwood. W. Va. I000d KOOK Tyler, Tex. WGNP Indian Rocks Wls250d Tex. 250 BeÌch.l000d WRGM Richmond, Va. I0000d WGLB Port Washington, l(VWC Vernon, 1000 KVOG Ogden, Utah 1000 WIXX Oakland Park, Fla. 1000d KFKF Bellevue, Wash. W KVT Brattleboro, Vt, 1000 WXPQ Eatonton, Ga. 500d WTKM Hartford, Wis. 500d WFAD Middlebury. Vt. 1000 WHOW Clinton. Ill. 5000d 1570-191.1 WIKE Newport, Vt. 1000 WLUV Loves Park, Ill. 500d 1550-193.5 Ala. 1000d 1000 WCRL Oneonta, WCVA Culpeper, Va. 1000 WSVL Shelbyville, Ind. Ala. 5000d WTQX Selma, Ala. 5000d 1000 Iowa I000d WAAV Huntsville, WVEC Hampton, Va. KSIB Creston, WM00 Mobile, Ala. 50000d KBRI Brinkley, Ark. 250d WAYB Waynesboro, Va. 1000 WHIC Hardinsburg, Ky. 250d Fordyce, 250d 1000 KUAT Tucson. Ariz. 50000d KBJT Ark. KBRO Bremerton, Wash. WRSL Stanford, Ky. 500d 500d KRSA Alisal, Calif. 250d Wash. 500 Lafayette, La. 10000 KXEX Fresno, Calif. KVAC Forks, KXKW K KHI San Fran., Calif. 10000 KCVR Lodi, Cal. 5000d KLOG Kelso, Wash. 1000 WVOB Bel Air, Md. 250d I0000d KACE Riverside, Cal. 5000d 1000 500d KQXI Arvada, Colo. K ENE Toppenish. Wash. WTRI Brunswick. Md. WEXT W. Hartford, Conn. 1000d KLOV Loveland. Colo. 25Qá KTEL Walla Walla, Wash. 1000 WKJR Muskegon Hts., Mich. Fla. 10000d WTWB Auburndale, Fla. 5000d W.Va. 1000 000d WRIZ Coral Gables, WGKV Charleston, WOGO New Smyrna Beach, WFBF Fernandino Beach, Fla. WTCS Fairmont, W.Va. I000d WYNZ Ypsilanti, Mich. 250d la. 250 I000d 1000 I0000d WLOH Princeton, W. Va. KOLM Rochester, Minn. WYOU Tampa, Fla. I0000d WOKC Okeechobee, Fla. 1000 WSGB Sutton, W.Va. 1000 KMPL Sikeston, Mo. 5000 5000d Fla. 250 I000d WTHB Augusta, Ga. WJOE Ward Ridge. WGEZ Beloit, Wis. WSLT Ocean City -Somers WYNX Smyrna, Ga. 10000 WMES Ashburn, Ga. 1000d WLCX LaCrosse, Wis. 1000 Pt., N. J. I000d III. 1000d WGHC Clayton, Ga. 1000d 1000 50000 WJIL Jacksonville, WIGM Medford, Wis. WKBW Buffalo, N.Y. WCSJ Morris. Ill. 250d WBAD College Park, Ga. I000d WOSH Oshkosh, Wis. 1000 WTHE Mineola. N. Y. I0000d 250d Ga. 250d 500 5000 W P D F Corydon. Ind. WGSR Millen. KLME Laramie, Wyo. WDSL Mocksville. N.C. WCVL Crawfordsville, Ind. 250 WO KZ Alton, Ill. I000d KRTR Thermopolis. Wyo. 250 KMAV Mayville. N. D. 250d WCTW New Castle, Ind. 250 WFRL Freeport. III. 5000d KGOS Torrington, Wye. 1000 WBNO Bryan. Ohio 500d Sullivan, Ind. 250d Harvey, 5000d I000d W KQV WBEE Ill. W I N W Canton. O. KIWA Sheldon, Iowa 500d WTAY Robinson, III. 250d 1500-199.9 WKNT Kent. O. I000d KEDD Dodge City. Kans. 1000d WILO Frankfort, Ind. 250d WTTO Toledo. 0. 1000 KNIC Winfield, Kan. 250d WH EL New Albany. Ind. 10000d WVSM Rainsville, Ala. I000d Okla. 50000 Ark. 1000d KOMA Okla. City, WIRY Irvine, KY. I000d KMCD Fairfield. Iowa 250d KUMR Jacksonville. Ore. 10000 250d 1000011 KYXI Oregon City. WMSK Morganfleld, Ky. KJFJ Webster City. Iowa 250d KBBQ Burbank, Cal, WCHE West Chester, Pa. 250d 5000d KXRX San Jose. Cal. 10000 WLUX Baton Rouge. La. KNDY Marysville. Kans. 250d WRAI San Juan. P. R. 10000 KOKA Shreveport, La. 10000 Ky. 250d WFIF Milford, Conn. 5000d S.C. 250 WKKS Vaneeburg, 50000 WTGR Myrtle Beach. WSER Elkton. Md. I000d La. 500d WTOP Washington. D.C. S. C. I000d I000d WABL Amite. Key West, Fla. 250 WKMG Newberry,. WSHN Fremont. Mich. KLLA Leesville, La. 1000 WHIZ WSLV Ardmore. Tenn. I000d Miss. 50000 WGUL New Port Richey, Fla. 250d WOK1 Jackson. KMAR Winnsboro, La. 1000 WBHT Brownsville. Tenn. 250d WSAO Senatobia, Miss. 5000d WSEM Donaldsonville, Ga. I000d I000d WPEP Taunton, Mass. I000d WIDD Elizabethton, Tenn. KGMO Cape Girardeau, Mo. 5000d 500d WDEN Macon, Ga. 5000 WMLO Beverly, Mass. Thomaston. Ga. I000d KKJO St. Joseph, Mo. Mass. I000d WTHN 1530-196.1 Neb. 500d WDEW Westfield, KUMU Honolulu. Hawaii 5000 KICS Hastings. WMRP Flint. Mich. 1000d WAAO Andalusia, Ala. WCGR Canadaiqua, N.Y. 250 WEEN Genesco, Ill. 250d 500d WFUR Grand Rapids, 250 WLCB Moulton. Ala. 1000d WBAZ Kingston. N.Y. 1000d WPMB Vandalia, III. Utica, N.Y. 1000 Michigan WZBN Zion. Ill. 250d WCTR Chestertown, Mo. 1530 WBVM KUXL Golden Valley, Minn. I000d 5000d Pine Ark 250d WPXY Greenville, N. C. 500d WBRI Indianapolis, Ind. KCAT Bluff. 1000d WONA Winona, Miss. 1000d Ind. I000d KTMN Trumann, Ark. 250d WYNA Raleigh, N.C. Mo. 250d WAKE Valparaiso, N.C. 1000d KLEX Lexington. RG New Roads, La. I000d KFBK Sacramento. Calif. 50000 WTYN Tryon. Amsterdam, N.Y. I000d KW WFCM WinstonSalem, N.C. WAFS WVOC Battle Creek. Mich. I000d KRYT Colorado Springs. I000d WFLR Dundee, N.Y. I000d WJRK Detroit, Mich. 50000d Colo. I000d WBUZ Fredonia. N.Y. 250d 50000 WOJZ Bridgeport. Conn. KQWB Fargo, N.D. 5000d KSTP St. Paul, Minn. Ohio 500d WHRF Riverhead, N. Y. 1000d WBFN Quitman, Miss. I000d WENG Englewood, Fla. 1000 WDLR Delaware, N.C. 500 10000d Madill. Okla. 250 WTLK Taylorsville, KDFN Donlphan, Mo. 1000d WTTI Dalton, Ga. KMAD WNCA Siler City, N.C. 1000d Lakes, N.J. 500 KNBI Norton, Kan. I000d KREK Sapulpa. Okla, 500d WKER Pompton Pa. 1000d WCLW Mansfield. 0. 1000d Glen, N.Y. KWLA Many. La. 1000d WLOA Braddock. 250d WGMF Watkins WTTC Towanda, Pa. 500d WPTW Piqua, Ohio WKBX Winston-Salem. N.C. WCTR Chestertown, Md, 250d KTAT Frederick, Okla. 250d I000d WRPM Poplarville, Miss. 10000d WKFE Yauco, P.R. 250 S.C. 10000 KOLS Pryor, Okla. I000d WGIC Xenia, O. 500d WTHM Lapeer. Mich. 5000d WBSC Bennetsville. 99 AUGUST -SEPTEMBER, '1968

www.americanradiohistory.com kHz Wave WHITE'S Length W.P. kHz Wave Length W.P. kHz Wave Length W.P. WPGC Bradbury Hts., Md. 10000d KWBG Boone, Iowa WAQE 1000 WKEN Dover, Dol, 1000 Towson, Md. 5000 KVGB Great Bend. Kans. 5000 W I

100 RADIO-TV EXPERIMENTER

www.americanradiohistory.com kHz Wave Length W.P. kHz Wave Length W.P. kHz Wove Length W.P. kHz Wave Length W.P. C1AF Cabano, Que. 250 1400-214.2 800-374.8 990-302.8 C1AV Port Alberni, B.C. 1.000d 250 CFOB Fort Frances, Ont. I ,000d CBW Winnüpeg, Man. 50,000 250n CFLD Burns Lake, B. C. 500n COY Corner Brook, NOd. 10,000 C1CS Stratford 500d Cl FP Rivière du Loup, Que. IO.000d CHAR Moose Jaw, Sask. IO,OOed 250n 250e 5.000n 1000-2119.8 CJRW Summerside, P.E.I. 250 CKCB Collingwood, Ont. 250 I,000d CKRN Rouyn, Que. 250 CHRC , Que. 50,000 CKBW Bridgewater, N.S. 10,000 CJWA Wawa, Ont. CJAD Montreal. Que. 50,000d 250n CKSW Swift Current, Sask. 1,000d I0,OOOn 1010-296.9 CKWL Williams Lake. B.C. 250 250e CJBQ Belleville. Ont. 1,000 CKBS St. Hyacinthe, Que. 250 CJLX Fort William, Ont. I0,000d CBR , Alta. 50,000 CKLS Ls Sarre. Que. 250 1410-212,6 Toronto, Ont. 50.000 I,000d 5,000n CFRB CI(00 Osoyoos, B.C. 10.000 250n CFMB Montreal, Que. CKOK Penticton, B.C. I0,000d B.C. 10,000 500n 1050-285.5 CFUN Vancouver, CKSL London, Ont. 10,000 CKLW Windsor, Ont. 50,000 CFGP Grande Prairie, Alta. 10.000 1250-239.9 VOWR St. John's, NOd. 1,000 CH UM Toronto, Ont. 50,000 CBOF Ottawa. Ont. 10.000 1420-211.1 CJ IC Sault Ste. Marie, Ont. CHWO Oakville. Ont. I.000d 810-370.2 10,000d CHSM Steinbach. Man. 10.000 CJMT Chicoutiml, Que. 1,000 CHAR Calgary, Alta. 10,000 2,500n CKBL Matane, Que. 10.000d CIVR Melfort, Sask. 10.000 CJNB North Battleford, Sask. 5,000n CKPT Peterborough, Ont. 5,000 850-352.7 10.000 CKOM Saskatoon, Sask. 10,000 CJJC Langley, B.C. 1,000 C KSB St. Boniface, Man, 10,000 1430-209.7 CKRD Red Deer. Alta. 10.000d 1260-238.0 1.000n 1060-282.8 CKFH Toronto, Ont. 10,000 CKVL Verdun, Que. 50.000d Alta. 50.000 CFRN Edmonton, Alta. 50,000 I0,000n CFCN Calgary, CJLR Quebec, Que. 10,000 1270-263.1 1440-208.2 B.C. 1.000 860-348.6 1070-280.2 CFGT Alma. Que. I .000 CFCP Courtenay. CBH Halifax. N.S. 10,000 CHAT Medicine Hat. Alta. 10 .000 CKPM Ottawa, Ont. 10,000 CFPR Prince Rupert, B.C. 10,000 CBA Sackville, N.B. 50,000 CHWK Chilliwack. B.C. 10 .000 CHAK Inuvik, N.W.T. 1,000 CFAX Victoria, B.C. 1,000 CJCS Sydney, N.S. 10 ,000 1450-206.8 CJBC Toronto, Ont. 50,000 CHOK , Ont. 5,000d 1,000n CBG Gander, NOd. 250 900-333.1 1280-234.2 CFAB Windsor. N.S. 250 CHML Hamilton. Ont. 5.000 1080-277.6 CHIQ Hamilton, Ont. 10,000d CFJR Brockville, Ont. I,000d 5,000n 250n CHNO Sudbury, Ont. 10,000d Llondminster, Alta. 10,000 I.000n CKSA CHQB Powell River. B.C. 1,000 CHEF Granby, Que. I.000d CJBR Rimouski, Que. 10,000 CMS Montreal. Que. 50,000 250n CJVI Victoria, B.C. 10,000 1090-275.1 CAL Estevan, Sask. 1.000 CHRT Riviere du Loup, P.Q. 250 CKBI Prince Albert, Sask. 10,000 CH EC Lethbridge, Alta. 5,000 CKCV Quebec, Que. I0,000d CHUG Cobourg, Ont. 1,000 CKDR Dryden, Ont. I,000d CH RS St. Jean, Que. I0,000á 5,000n CAM Causapscal, Que. I,000d 250n 250n CKDH Amherst, N.S. 1,000 1110-272.6 1290-232.4 1,000 CKJL St. Jéreme, Que. CBD Saint John, N.B. 10,000 CFAM Altona, Man. 10,000d 1460-205.4 CKTS Sherbrooke. Que. 1.000 5.000n CFML Cornwall, Ont. 1,000 CJOY Guelph, Ont. I0,000d CKVD Val D'Or, Que. 10,000d 250d CJOE London, Ont. 10,000 2,500e CFTJ Galt, Ont. 5,000e CHQT Edmonton, Alta. 10,000 CKRB Ville St. Georges, Que. 910-329.5 1300-230.6 10.000d 1130-265.3 CBAF Moncton, N.B. 5,000 5,000e COO Ottawa, Ont. 5.000 CJME Regina. Sask. 1,000 CFJC Kamloons, B.C. 10,000d CKWX Vancouver, B.C. 50,000 1470-204.0 I,000n 1310-228.9 CFSX Stephenville, Nfld. 500 1140-263.0 CFOX Pointe Claire, Que. 10,000d CH RL Roberval, Que. 1,000 CBI Sydney, N.S. 10.000 CFG M Richmond H ill. Ont. I0.000d 5.000e CJDV Drumheller, Alta. 5.000 CKXL Calgary, Alta. 10,000 2,500e CFRW Winnipeg, Man. 5,000 CKLY Lindsay, Ont. 1.000 CHGB Ste-Anne-de.la- CHOW Welland, Ont. I,000d 1150-260.7 Pocatière, Que. 5,000 500n 920-329.9 CKOY Ottawa, Ont. 50,000 CHSJ Salnt John, N.B. IO,000d CFRY Portage La Prairie. 5.000e 1480-202.6 Man. 1,000 CKOC Hamilton. Ont. 10.000 1320-227.1 CH RD Drummondville, Que. 10.000 CJCH Halifax, N.S. 10.000d Trais- Rivières, Que. I0,000d 5,000 CKTR CHQM Vancouver, B.C. 50,000 I,000n C1S0 Sorel, Que. 10,000d 1490-201.2 CJCJ Woodstock. N.B. 1,000 CKX Brandon. Man. 10.000d Marie, Ont. 5.000n CKCY Sault Ste. I,000n New Glasgow, N.S. 5,000 CF MR Fort Simpson, N,W.T. 25 IO,000d CKEC 100 CK KW Kitchener, Ont. 1,000 CFRC Kingston. Ont. 5,000n 1170-256.3 CHYM Kitchener, Ont. I0.000d Wingham, Ont. 2.500d 5.000e CKNX CFNS Sa.katoon, Sask. 1,000 1,000n 1330-225.4 CJSN Shaunavon, Sask. 1,000d CKKR Rosetown, Sask. 10.000 250e 930-322.4 1220-245.8 CKAD Middleton, N.S. I.000d CFBC Saint John, N.B. 10,000d CHSC St. Catherines, Ont. 1,000d 1340-223.7 250n 500n Que. 1,000d 5,000e Goose Bay. Nod. 1,000 CI(BM Montmagny, Lethbridge, Alta 10,000d CFGB 250n CJCA Edmonton, Alberta I0,000d CJOC Hearst, Ont. 100 5.000n 5,000n CFLH CFWB Campbell River, B.C. 250 1,000 CFSL Weyburn, Sask. 1 ,0004 CJON St. John's, NOd. 10,000 CJRL Kenora, Ont. 250n CJSS Cornwall, Ontario 1,000 1500-199.9 Victoria. B.C. 10,000 CFYK Yellowknife. N.W.T. 1,000 940-319.0 CKDA CHAD Amos, Que. 250 CKCW Moncton, N.B. 10.000 250 CKAY Ducan, B.C. 1,000 CBM Montreal, Que. 50,000 1,000 CILS Yarmouth. N.S. CJGX Yorkton, Sask. 10.000 CKSM Shawinigan, Que, CFOM Ville Vanier, Que. 250 CJIB Vernon, B.C. IO.000d CKAR-I Parry Sound. Ont. 250 1510-199.1 1230-243.8 B.C. 250 CKCR Revelstoke. RS Sherbrooke, P. Q. 10,000- CBDR Schefferville, Que. 250 25Q Cl 950-315.6 CKNR Elliott Lake. Ont. CKOT Tillsonburg, Ont. 1,000 CHER Sydney, N.S. 10,000 CFBV Smithers, B.C. I,000d CKOX Woodstock, Ont. 1,000d CKBB Barrie, Ont. I0,000d 250n 250n 2,500n CFGR Gravelbourg, Sask. 250n 1540-195.0 CFLK Kapuskasing, Ont. 100 1350-222.1 CKNB Campbellton, N.B. I0,000d CHIN Toronto, Ont. 50,000 I,000n CFPA Pert Arthur, Ont. I,000d CHOV Pembroke, Ont. 1,000 250n CJDC Dawson Creek, B.C. 1,000 960-312.3 CHFC Churchill. Man. 250 CJLM Joliette. Que. 1.000 1550-193.5 CHVD Dalbeau. P.Q. 1,0000 CKEN Kentville, N.S. 1,000 10,000 CFAC Calgary, Alta. 10.000 250n CBE Windsor, Ont. 10,000 CKLB Oshawa, Ont. 10,000d CHNS Halifax, N.S. CJSA Ste. Agathes des Monts, 5,000e CKWS Kingston, Ont. I0.000d Que. I,000d 1560-192.3 5,000n 250n 1360-220.4 CFRS Simeon, Ont. 250d CJTT New Liskeard, Ont. I.000d 10,000 970-309.1 250n CKBC Bathurst, N.B. CKCH Hull, Que. 5,000 CKLD Tlhetford Mines, Que. I,000d 1370 --218.8 1570-191.1 CBZ Fredericton, N.B. 10,000 250n CKMP Midland, Ont. I,000d CFLV Valleyfield, Que. 1,000 CFOR Orillia, Ont. 10,000d 980-305.9 250n 1,000e CKTI( Kitimat, B.C. I,000d 1380-217.3 CHUB , B.C. 10.000 CBV Quebec, Que. 5,000 250n Montreal. Que. 50.000 1,000 CKLM CFPL London, Ontario 10,000d VOAR St. John's, NOd. loe CFOA Victoriaville, Que. 5,000n CKLC Kingston, Ont. 10,000d CH EX Peterborough, Ont. 10,000d 5.000n 1580-189.2 1240-241.8 10,000 5.000e CKPC Brantford. Ont. Chicoutimi. Que. 10,000 CKGM Montreal, Que. 10,000 CFLM La Tuque, Que. I,000d CBJ CKNW New Westminster, 250n 1390-215.7 B.C. 50.000 CFLS Levis, P.Q. 250 1600-187.5 I.000d CHOO Ajax. Ont. 10,000 CKRM Regina, Sask. I0.000d CFVR Abbotsford, B.C. Niagara Falls, Ont. 10.000 5,000n 250n CKKC Nelson, B.C. 1,000 CJRN 101 AUGUST -SEPTEMBER, 1968

www.americanradiohistory.com U. S. 'Teevs;on Stations by States U. S. stations listed alphabetically by cities within state groups. Territories and follow educational possessions states. Chan., channel; C.L., call letters. t, stations. Listing indicates stations on the air up to April I. 1966. W I -RTE'S Locaflon C.L. Chan. Location C.L. Chan. Location C.L. Chan. Sacramento KCRA-TV 3 tWUSF-TV 16 KXTV 10 W. Palm Beach W EAT -T V 12 IOWA GUIDO® tl(YIE 6 Salinas- Ames -Des Moines W0I-TV 5 GEORGIA Cedar Rapids Monterey 1(SBW-TV 8 KCRGTV 9 Albany WALB-TV 10 Cedar Rapids San Bernardino tKVCRTV 24 Ashburn Waterloo KHOF=TV 30 tWJIA-TV 23 WMT-TV 2 Athens Davenport WOC-TV 6 aoc San Diego 15 tWGTV 8 tKEbS-TV Atlanta WSB-TV Des Moines KRNTTV 8 KFMB-TV 8 2 WAGA-TV 5 WHO -TV 13 Locofion C.L-- Chan. KOGO-TV 10 KCST 39 WAIT -TV II tKDPS-TV II 30 Ft. Dodge KVFD-TV 21 San Diego -Tijuana XETV 6 tWETV WBMO-TV 36 Sioux City KCAU-TV 9 ALABAMA XEWT-TV 12 San Francisco KRON-TV 4 WJRJTV 17 KMEG 14 Birmingham WBRC-TV 6 Augusta WJBF 6 KTIV 4 KPIX 5 WAPITV 13 WRDWTV 12 Waterloo - KGOTV 7 WBMG 42 WATU-TV 20 Cedar Rapids KWWLTV 7 tKQED 9 TWBIQ 10 KSAN-TV Chatsworth tWCLP-TV 18 Decatur WMSL-TV a3 32 Cochran KANSAS Dothan KBHK-TV 44 tWDCO-TV 15 WTVY 4 Columbus WRBL-TV 3 Dozier San Jose KNTV 11 Ensign KEMO-TV 20 WTVM Garden City KGLD Florence TWFÌQ 36 V 28 II KGSC-TV 36 KUPK-TV WOWL-TV 15 38 13 San Luis TKTEH 54 WVÉA-TV Goodland KLOE-TV IO Huntsville WHNT-TV 19 Dawson W ACS -TV 25 Obispo KSBY-IITV 6 t Great Bend KCKT 2 TWHIQ 25 Macon W MAZ-TV t3 San Mateo TKCS V 14 Hays KAYS-TV 7 WAAY-TV 31 WCWB-TV 41 Santa Barbara EYKT Hutchinson -Wichita KTVH 12 Louisville iWGIQ 43 Pelham 14 Santa Maria 12 tWABW-TV Pittsburg - Mobile WKRG-TV 5 KCOYTV Savannah Stockton -Sacramento WSAV-TV 3 Joplin, Mo. 7 WALA-TV 10 KOVR IS KOAM-TV Visalia KICU-TV 43 WTOC-TV II Salina *KSLN-TV 34 tWEIQ 42 tWVANTV 9 Topeka Montgomery WSFATV 12 Waycross WIBW-TV 13 COLORADO tWXGATV KTSB 27 WCOV-TV 20 Wrens tWCES-TV 20 Wichita W KAB -TV 32 Colo. Springs KARD-TV 3 KKTV II KAKE-TV 10 TWAIQ 26 KRDOTV 13 HAWAII Mount Cheaha Denver KWGNTV 2 Hilo KENTUCKY State Park tWCIQ 7 KOA-TV 4 KPUA-TV 9 Selma WSLA 8 KLZ-TV 7 KHAW-TV 11 Bowling Green WLTV 13 Tuscaloosa WCFTTV 33 KBTV KHVO 13 Lexington 9 Honolulu KHON-TV WLEX-TV 18 ALASKA tKRM 2 W K YT -T V 27 Durango KREZ-TV 6 KHVHTV 4 KGMBTV WBLG-TV 62 Anchorage KENI-TV 2 Grand Junction KREX-TV '5 Louisville WAVE -TV KTRG-TV 13 KVA 11 Montrose KREY-TV 10 WH AS -TV II KHARTTV 19 Pueblo KOAA-TV 5 tKHET II WLKY-TV 92 Walluke KMAU-TV 3 Fairbanks KFAR-TV 2 Sterling KTVS 3 tWFPK-TV 15 KTV KAIITV 7 Paducah WPSD-TV 6 KMVI-TV 12 Juneau KINYTV I 8 CONNECTICUT 10 Sitka I tKMEB KIFW-TV 3 Bridgeport *WFTT 43 LOUISIANA tWEDW 49 IDAHO Alexandria KALB -TV 5 ARIZONA Hartford Baton Rouge WTIC-TV 3 Boise WBRZ 2 Nogales XHFA-TV 2 WHCT 18 KB01TV 2 WAF B -TV 9 , KZAZ 3 KTVB 7 Lafayette tWEDH 24 Idaho Falls-Pacatello KATC Phoenix KTVK New Britain- KIDTV KLFY-TV 10 KPAZ-TV 71 Ilariford KIFITV 8 WHNB-TV 30 Lewiston KLNI-TV I KPHO-TV New Haven WNHC-TV 8 KLEW-TV 3 Lake Charles KPLC-TV KOO L -TV IÓ Norwich Moscow tKUID-TV 12 Monroe tWEDN 53 Twin Falls KNOE-TV 8 KTA R -TV 12 Waterbury WATR-TV 20 KMVT II New Orleans W W LTV 4 t KA ET 8 WDSU-TV *KPAZTV 21 DELAWARE ILLINOIS WVUE 12 Tucson KVOA-TV 4 Wilming.on 12 Carbondale TWSIU 8 tWYES-TV 8 KGUN-TV 9 TWHYY-TV Champaign WC1A 3 'WWOM-TV 26 KOLD-TV 13 Shreveport DISTRICT OF COLUMBIA WICD 15 KTBS-TV 3 tKUAKIVAT -TV 6 KTAL-TV 6 Yuma Washington tWILL-TV 12 II WRC-TV 4 Chicago WBBM-TV 2 KSLA-TV. 12 KBLU-TV 13 WTTG 5 W MAQ-TV 5 W. Monroe KUZN-TV 39 WMAL-TV 7 ARKANSAS WBKBTV 7 WTOP-TV 9 WGN-TV 9 MAINE - El Dorado KTVE 10 WFAN-TV 14 26 WCIU-TV Augusta tWCBB 10 Ft. Smith KFSA-TV 5 T W ETA-TY 26 WFLD 32 Bangor WLBZ-TV 2 Jonesboro KAlT-TV 8 WDCATV 20 11 tWTTW WABI-TV 5 Little Rock KARK-TV 4 tWÄN 20 WEMT 7 KATV 7 FLORIDA Decatur 17 Calais tWMED-TV 13 KTHV 12 Clearwater Freeport WCEE-TV 23 WJNR-TV 22 Orono tWMEBTV 12 tKETS Daytona Harrisburg 3 Beach - WS1L-TV Poland Spring WMTW-TV 8 Orlando La Salle W EEQ-TV 35 CALIFORNIA WESH-TV 2 Portland WCSHTV 6 Ft. hivers WINK-TV II Moline WQAD-TV Bakersfield Peoria WGAN-TV 19 KLYD-TV 17 Ft. Pierce WTVX 34 WIRL-TV 19 Presque Isle WAGM-TV 8 WEEK -TV 25 KERO-TV 23 Gainesville TWUFT 5 tWMEM-TV 10 KBA K -TV 29 Jacksonville WMBD-TV 31 WJXT 4 Quincy -Hannibal Chico KHSL-TV 12 WFGA-TV 12 WGEht-TV 10 MARYLAND Corona KBSC-TV Rockford W REX -TV 52 W1KS-TV I Baltimore El Centro. tWJCT WTVO 17 WMAR-TV 2 Mexicali XHBC-TV 3 Rock Island WHBF-TV 4 WBAL-TV 11 WUMJ-TV 47 Springfield Eureka KIEM-TV 3 Miami WTV1 4 WICS 20 WIZ -TV 18 WMET-TV 24 KVIQ-TV 6 WCIXTV 6 67 tKRWE-TV 13 WCKT 7 INDIANA tWETM Fontana Cumberland WTBO-TV 52 KXLA-TV A0 WLBWTV Iß Bloomington - Fresno Salisbury WBOC-TV 16 KMJ-TV 24 TWTHS-TV 2 Indianapolis WTTV 4 KFRE-TV 30 tWSEC-TV 17 Evansville WTVW 7 MASSACHUSETTS KJEO 47 WAJA-TV 23 WFIE-TV 14 KAIL 53 Orlando WDBO-TV Adams WCDC 19 Los Angeles WEHT 50 KNXT 2 WFTV 9 Ft. Wayne WANE -TV 15 Boston WBZ-TV 4 KNBC 4 tWMFE-TV 24 WPTA 21 WHDHTV 5 KTLA 5 Palm Beach WPTV 5 W KJG-TV 83 WNAC-TV 7 KABC-TV 7 Panama City WJHGTV 7 Indianapolis WFBMTV 6 WSBK-TV 38 KH1-TV 9 Pensacola WEAR -TV 3 WISH -TV 8 tWGRH-TV 2 KTTV II tWSRE 23 WLWI 13 TWGBXTV 44 KCOP 13 St. Petersburg - Lafayette WLFI-TV 18 Cambridge -Boston W KBG-TV 56 KWHY-TV 22 Tampa WSUNTV 38 Marion WTAF-TV 31 Greenfield WRLP 32 KMEXTV 34 TWEDU 3 Muncie WLBC-TV 49 Springfield W W LP 22 tKCET 28 WTOG 44 WACH-TV WHYNTV 40 Modesto 43 KLOC-TV 19 Tallahassee- St. John ÌWCAE 50 Worcester WJZB-TV 14 Monterey KMBY-TV 46 Thomasville WCTV 6 Oakland -San South Bend WNDU-TV 16 Tallahassee tWFSU-TV II WSBT-TV 22 MICHIGAN Francisco KTVU 2 Tampa South Bend -Elkhart WSJV 28 Battle Creek W W W Palm Springs KPLM-TV 42 St. Petersburg UTV 41 WFLA-TV 8 Terre Haute WTWO 2 Bay City -Saginaw WNEM-TV 5 Redding KRCR-TV 7 WLCY-TV 10 WTH1TV .0 Cadillac - tKIXE-TV 9 WTVT 13 Vincennes "tWVUT 22 Traverse City WWTV 9

102 RADIO-TV EXPERIMENTER

www.americanradiohistory.com C.L. Chan. Location C.L. Chan. , Location C.L. Chan. Location C.L. Chan. ILocation 18 -TV 2 tWQEX tKXNE.TV 19 Dickinson (DIX 'WECO-TV 53 Cheboygan WTOM-TV 4 Norfolk Fargo Y,. o. I(NOPTV 2 WDAU-TV 22 Detroit WJBK-TV 2 Platte KTHI-TV 11 Scranton WW1 -TV 4 tKPN(MTV tWVIA-TV 44 3 WXYZ-TV 7 Omaha R1.10T 10 Scranton - 6 Minot 16 WKBD-TV 50 WOW -TV 13 Wilkes -Barre EP -TV KETV 7 KXPAC-TV WBRE-TV 28 )WTVS 26 Pembina KCNDTV 12 9 tl(YNE-TV 26 WSBA-TV 43 DetroitWIndsor WJ-TV KS 42 Valley City KX1B-TV 4 York RT-TV 12 KA 8 Flint (STE' IO Williston KUMV-TV Grand Rapids WZZM-TV 13 Scottsbluff -Gering RHODE ISLAND Superior KHTL-TV 4 Grand Rapids - OHIO Providence Kalamazoo WOOD -TV 8 NEVADA WWPRI-TV 12 Kalamazoo WJIM-TV Akron WAKR-TV 49 tWSBE 36 Lansing 6 KHBV 5 Athens tWOUB-TV 20 Henderson 70 Providence Lansing Las Vegas KORK-TKLAS-TV Bowling Green tWBGU-TV New Bedford WTEV 6 (Onondaga) WILXTV 10 8 Canton W1AN 17 Marquette WLUC-TV 6 KSHO-TV 13 Cincinnati WLWT 5 SOUTH CAROLINA Pleasant 'fWCMU-TV 14 KCRL 4 WCPO-TV 9 Mt. Reno 14 WMKG 54 8 WKRC-TV 12 Allendale WEBA-TV Muskegon KOLO-TV 40 Onondaga - KTVN 2 TWCET 48 Anderson WAIM-TV East Lansing tWMSB 10 'WSCO-TV 19 Charleston WJJ W-TVCI 24 Saginaw - NEW HAMPSHIRE Cleveland W KYC-TV 3 Bay City W KNXTV 25 WEWS 5 WCSC-TV 5 Sault Ste. Marie WW UP -TV 10 Durham tWENH 11 WJW-TV 8 tWNTV 7 Traverse City WPBN-TV 7 Lebanon WRLH d9 tWVIZ-TV 25 Columbia WIS-TV 10 University Center Littleton tWLED-TV 49 WKBF-TV 61 WNOK-TV 19 9 25 (Bay CitY) TWUCM-TV 19 Manchester WMUR-TV Columbus WLWC 4 WOLO-TV NEW JERSEY WTVN-TV 6 tW 35 MINNESOTA WBNS-TV 10 Florence RLK-TVWBTW 13 W KISS -TV 48 34 33 10 Burlington tWOWLWD tW1PM-TV Appleton TKWCM-TV (Newark) WNJU-TV 47 2 WFBC-TV 4 KCMT 7 Linden Dayton Grecenville Alexandria WCMC-TV 40 7 tWNTV 29 6 Wildwood W H IO -TV Austin KAUS-TV W KEF 22 Spartanburg W SPA -TV 7 Duluth t WDIO-TV IO NEW MEXICO Defiance W DNB-TV .65 4 WKTRTV ( Duluth -Superior 3 Albuquerque KOB-TV Kettering (Dayton) 6 KOAT-TV 7 Lima WIMA-TV .5 KXAB-TV 9 WDAL-TVDSM-TV 28 Aberdeen 8 13 Newark tWGSF 8 tWDSE-TV KGGM-TV 14 Brookings tKEED-TV WIRT 13 tKNME-TV 5 Oxford tWMUB-TV Deadwood -Lead KDSJ-TV 5 Hibbing WRLO SO Mankato 4(EYC-TV 12 Carlsbad KAVE-TV 6 Portsmouth Florence KFOW-TV 12 Steubenville- L KDLO-TV 3 Minneapolis. Clovis 9 (Watertown) 8 Wheeling. W. Va. WSTV-TV 11 St. Paul WCCO-TKMSP-TV Roswell -TV Lead KHSD-TV 9 BÌJM TV 10 Toledo WTOL-TV II KORN-TV 5 KS 13 Mitchell WTCN-TV 11 WSPD-TV Rapid City t E -TV 9 YORK WOHO-TV. 24 KOHTA -TV S Rochester NEW -TV 30 tKTCI-TV 17 tW GTE KRSD-TV 7 StPaul Albany WTEN 10 WDK$-TV 54 6 St. Paul - Reliance KPLO-TV. WAST 13 Youngstown W FM1-TV 21 KELO-T II Minneapolis 67 Sioux Falls tKTCA-TV 2 WEEE-TV W KBN-TV 27 KS00-TVV 13 12 KNMT 12 Binghamton WNBF-TV WYTV 33 tKUSD-TV 2 ' Walker Vermillion WBJA-TV 34 Zanesville WHIZ -TV 18 4G TENNESSEE MISSISSIPPI WtWSKG 46 OKLAHOMA Biloxi -Gulfport - Buffalo 2 Chattanooga WRCB-TV Pascagoula WLOX-TV 13 WBENTV 4 Ada KTEN 10 WTTC 9 Columbus WCBI-TV 4 WKBW-TV Ardmore WDEF-TV 12 Greenwood WABG-TV 6 tWNEDTV 17 Sherman- Jackson WBB1TV 7 Gulfport W ROATV 25 Carthage. Denison, Tex. (XII 12 Johnson City -Bristol - 7 7 Hattiesburg - Watertown WWNY-TV Lawton KSWO-TV Kingsport . WJHL-TV il Laurel WDAM-TV 7 Elmira WSYE-TV 18 Oklahoma City W KYTV 4 Knoxville WATE -TV 6 Jackson Jamestown WNYP 26 KOCO-TV 5 WBIR-TV 10 WJTV 26 12 New York WCBS-TV 2 KWTV 9 WTVK Meridian WTOK-TV II WNBC-TV 4 t KETA 13 Lexington tWLJT-TV li Tupelo WTWV 9 WNEW-TV 5 tKOKH-TV 25 Memphis 3 WABC-TV 7 Sayre KFDOTV 8 WRWMTVTV 5 MISSOURI tWNYE-TV 25 Tulsa (VOO-KOTV 2 WHBQ-TV IS 9 tWKNO-TV 10 12 WOR-TV Cape Girardeau KFVS-TV WPIX II KTUL-TV ß SM -TV 4 KOMU-TV 8 Nashville Columbia tWNDT 18 tKOED-TV ll WWAC -TV 5 Hannibal -Quincy KHQA-TV 7 #WN WSIX-TV 8 Jefferson City KRCG la 3 5 2 12 Plattsburgh W PTZ tWDCN-TV Joplin KODE -TV 8 OREGON 2 16 Rochester WROC-TV Sneedville tWS1K-TV KUHI-TV 10 II 4 WHECTV Coos Bay i(CBY-TV Kansas City WDAFTV 13 ' 5 WAAE-TV Corvallis ÌKOAC-TV TEXAS KCMO-TV 21 9 9 tWXXI Eugene KEZI-TV 9 KMBC-TV 6 13 Abilene KRBC-TV 19 Schenectady WRGB KVAL-TV 4 tKCSD-TV 17 KOTI 2 Amarillo KGNC-TV tWMHT Klamath Falls 7 Kirksville - 3 KTVR 13 KVII-TV 3 Syracuse WSYR-TV La Grande 10 Ottumwa, la. KTVO 5 KTVM 5 KFDATV 15 WHEN -TV Medford 7 Poplar Bluff "KPOB-TV 9 10 Austin KTBC-TV 2 WNYS-TV KMED-TV 42 St. Joseph KFEQ-TV 24 KATU 2 KHFI-TV KTVI 2 tWCNY-TV Portland KFDM-TV 6 St. Louis Utica WKTV 2 KOIN.TV 6 Beaumont KMOX-TV 4 KGW-TV KBMT 12 5 4 KSD-TV KPTV 12 Big Spring KWAB-TV II NORTH CAROLINA S KPLR-TV t KOAP-TV 1D Bryan ' KBTX-TV tKETC 9 Asheville OS -TV 13 KPVC-TV 24 Corpus Christi KIII 3 KMOS-TV 6 WISE KRIS -TV 6 Sedalia -TV 62 Roseburg KPIC 4 Springfield KVTV 3 tWUNF-TV 33 KZTV 10 4 KITS -TV 10 Chapel Hill tWUNC-TV 4 DàllasFort Worth KRLD-TV PENNSYLVANIA W FAA -TV 8 Charlotte 13 WCTU-TV 36 Allentown tW LVT-TV 39 tKERA-TV WSOC-TV 9 Io KMECTV 23 Billings KOOKTV 2 Altoona W FBGTV 39 IWTVI 42 3 KDTV KULR-TV 8 Clearfield tW PSX-TV 4 4 "WCTU-TV 36 12 El Paso KROD-TV Butte KXLF-TV Erie WICU-TV KTSM-TV 9 KXGN-TV 5 Columbia WJ ET-TV 24 G lend ive tWUNG-TV 58 KELP -TV 13 Great Falls KRTV 3 Concord 35 WTVD II 54 El Paso - KFBB-TV 5 Durham -Raleigh tWQLN 2 12 Greensboro WFMY-TV 2 WHP-TV 21 Juarez Helena KBLL-TV 48 Harrisburg XEPM-TVXEI-TV 5 WCFW-TV 9 WUBC WTPA 27 Kalispell WNCT-TV 9 Ft. Worth -Dallas WBAP-TV Missoula KGVO-TV 13 Greenville Hershey tW ITF-TV 36 KFWT 40 Hickory WHKY-TV 14 Johnstown W1AC-TV High Point WGHP-TV 8 WARD -TV 56 KTVI 11 NEBRASKA WNBE-TV 12 Galveston KVVV-TV 16 New Bern Lancaster WGALTV 4 I(HQL-TV 8 tWUNETV 17 W 13 Albion Linville Lebanon LYHTV HarlinGBT-TVKPRC-TV 2 Alliance tl(TNE-TV 18 Raleigh. Durham WRAL-TV 5 Philadelphia KY W -TV Houstonen 7 WITN-TV 7 6 KHOU-TV II Bassett tKMNETV Washington W FtL-TV 13 II WWAY 3 10 KIRK -TV Grand Island KGINTV Wilmington WCAU-TV 39 Hastings KHAS-TV 5 WECT 6 WPHL-TV 17 KHTV KHPL-TV 6 WSJS-TV 12 W1BF-TV 29 Hayes Center Winston-Salem tKHER 16 Hay Springs KDUH-TV 4 W KBS-TV 48 KHBV 5 tWUHY-TV 35 Laredodo 8 Henderson KGNS-TVKVTV 12 Kearney-Holdrege KHOL-TV 13 Pittsburgh KDKA-TV 2 Lexington TKLNE-TV 3 Bismarck WTAE-TV 4 Lubbock KCBLK-TV KXMB-TV 12 1 3 KOLN-TV 10 IC -TV 11 KB Lincoln WI 5 tKUON-TV 128 Devils Lake-Grand 13 t KTXT-TV ForksWDAZ V 57 tWQED McCook KOMC 103 AUGUST -SEPTEMBER, 1968

www.americanradiohistory.com WHITE'S Location C.L. Chan. Location C.L. Chan. Location C.L. Chan. Provo TKBYU-TV II Seattle K0MO-TV 4 Madison Salt Lake City 2 WISC.TV 3 KUTV KING -TV 5 GU KCPX-TV 4 WMTV 15 MM@ O KIRO-TV 7 WKOW-TV 27 KSL-TV 5 t KCTS-TV 9 t KU ED 7 Spokane tWHA-TV 21 KREM -TV 2 Milwaukee WTMJ-TV 4 KXLY-TV 4 VERMONT KHQ-TV WITI-TV 6 aog 6 WISN-TV 12 Burlington WCAX-TV 3 t KSPS-TV 7 WVTV 18 TWETK 30 TaeomaSeattle I(TNT-TV II Rutland Tacoma fWMVS 10 Location C.L. Chan. TV ER 28 KTVW 13 tWMVT 36 St. Johnsbury K LAY WVTB 20 -TV 20 Rhinelander WAEO-TV 12 Windsor KP ECT V 56 KKBC-TV 34 tWVTA 41 f Wausau WSAU-TV 7 Lufkin t KTPS 62 I(TRE-TV 9 Yakima WAOWTV 9 Midland -Odessa KMIDTV VIRGINIA KNDO 23 2 KI MA -TV 29 WYOMING Monahans KVKMTV 9 Bristol Odessa WCYBTV f KY V E -TV 47 KOSA-TV 7 HamptonNorfolk WVEC-TV 13 Casper I(TWO-TV 2 Port Arthur - Cheyenne KFBC-TV Beaumont tW H RO -TV 15 WEST VIRGINIA 5 K1AC-TV 4 Harrisonburg WSVA-TV 3 Riverton KWRB-TV 10 Richardson iKRETTV 23 Lynchburg -Roanoke WLVA.TV Bluefield San Angelo 19 WHIS-TV 6 KACBTV 5 Norfolk WTAR-TV 3 Charleston WCHS-TV 8 GUAM KCTV 8 Petersburg - San Antonio WTIP V 23 Agana KUAMTV 8 WOAI-TV 4 Richmond WXEX-TV 8 Clarksburg WBOY-TV 12 KENS -TV 5 Portsmouth #WYAH-TV 27 Huntington PUERTO KSAT-TV Portsmouth.Norfolk fWMUL-TV 67 RICO 12 WAVY -TV 10 Huntington - Aguadilla KWEXTV 41 Richmond WTVR-TV 6 Charleston WSAZ-TV WOLE-TV 12 San Antonio - 3 Caguas WKBM-TV II WRVA-TV 12 WHTN-TV 13 Mayaguez Austin fKLRNTV 9 Oak WORA-TV 5 Sweetwater -Abilene tWCV E -TV 23 Hill WOAY-TV 4 KTXSTV 12 tWCVW 57 Parkersburg tWIPM-TV 3 Temple -Waco KCEN-TV Roanoke Ponce WRIT( -TV 7 Tyler -Longview 6 TWBRA-TV I Marietta. 0. WTAP-TV 15 R KLTV 7 WDBJ-TV Weston WDTV 5 WSU -TV 9 Waco KWTX-TV 10 Wheeling W PSl 14 Weslaco WSLS-TV 10 KRGV-T,V 5 WRFT-TV Steubenville, San Juan W KAQ-TV 2 Wichita Falls 27 0 WTRF-TV 7 KFDX-TV 3 Staunton tWVPT 51 WAPA-TV 4 KAUZ -TV 6 WISCONSIN tWIPRTV 6 WASHINGTON WTSJ 18 UTAH Eau Claire Bellingham WEAUTV 13 WITA-TV 30 Logan KVOS-TV 12 Green Bay WBAYTV 2 tKUSU-TV 12 Pasco KEPR-TV 19 VIRGIN ISLANDS Ogden tKOET 9 Pullman WFRV-TV 5 f KWSC-TV 10 WLUK-TV II Charlotte Amalie WBNB-TV fKWCSTV 18 Richland KNDU 25 LaCrosse 10 WKBT 8 Christiansted WSVI 8 umwwuemmu®ouuuwuuumeomueeeeuuunww 111111111111.11111 111111111111113

Canadian Television Stations by Cities Canadian stations listed alphabetically by cities. Abbreviations: Chan., channel: C.L., call letters. Location C.L. Chan. Location C.L. Chan. Location C.L. Chan. Location C.L. Chan. Adams Hill, B.C. CFCR-TV.8 11 Cheticamp, N.S. CBFCT Alticane, 10 Hinton, Alta. CBXT-3 8 Midway, Sask. CKBI-TV-1 10 Chicoutimi, Que. CKRS-TV-2 B.C. CKMY-TVI 7 Amherst, N.S. 2 Nixon, B.C. CKPG-TV.I 10 Minden, Ont. CJCH-TV-3 8 Churchill, Man. CHGH-TV 4 CH EX -TV -2 10 Antigonish, N.S. Houston B.C. CFTK-TV-10 2 Moncton, CJCB-TV-2 9 Clearwater, B.C. CFCR-TV.10 N.B. CBAFT II Argentia, Nfld. 2 Hudson Hope, B.C. Moncton, N.B. CJOX-TV 3 Clinton, B.C. CFCR-TV-4 9 CKCW-TV 2 Ashcroft, B.C. CFCR-TV-2 10 Cloridorme, Que. CJDC-TV-I II Mont Blanc Perce, Que. Ashmont, CHAU-TV.8 6 Huntsville. Ont. Alta. CFRN-TV-4 12 CKVR-TV-2 8 CFGW-TV-2 8 Coleman, Alta. CJLH.TVI 12 Invermere, Athabasca. B.C. CFWL- TV- 1 6 Mont Alta. CBXT-I 8 Corner Brook, Nfld. Climont, Que. Atikokan, Ont. CBYT 5 Inverness, N.S. CICBTV-I 6 CBWCT-I 7 Corner Brook, Nfld. CKBL-TVI 11 Avola, B.C. CFCR-TV-13 Jasper. Alta- CBXT-4 5 Mont Georges, Que. 3 Jonquiere, Que- Baldy Mountain, Man. Cornwall, CI(RS-TV 12 CKHQ-TV-5 13 Ont. CION-TCJSS TV I8 Jubilee Mountain, B.C. 8 Coronation, Alta. CKRD-TVI Mont -Laurier, Que. CBFT-2 3 Baie St. Paul, Que.CKSSTV 10 CFWLTV-2 8 Mont-Louis, Que. Colgate, Saskatchewan Juskatla, B.C. CKBL-TV-4 2 C CFTKTV-7 2 Mont Tremblant, Que. CB FT -I II Bancroft, CKCI(-TV-I 12 Kamloops, B.C. CFCR-TV 4 Ont. CH EX -TV -I 2 Courtenay, B.C. Montreal, Que. CBFT 2 Banff, CBUT-I 9 Kapuskasing, Ont. CBFOT-I 12 Alta, CKRD-TV-2 IO Cranbrook, B.C. Montreal, Que. CBMT 6 CBUBT 10 Kapuskasing, Ont. CFCL-TV-3 3 CFCN-TV2 8 Crawford Bay, B.C. Montreal. Que. CFCF-TV 12 CBUAT-3 5 Kearns, Ont. CFCL-TV-2 2 CHCT-TV.2 13 Crescent Valley, B.C. Montreal, Que- CFTM-TV 10 Barrie, Kemano, B.C. CFTK.TV-5 2 Ont. CKVR-TV 3 Moose Jaw. Sask- CHAB-TV 4 Bayview, CHMS.TV-I 5 Kelowna, B.C. CH BC -TV 2 N.S. CJCH-TV-2 6 Creston, B.C. Mount Timothy, B.C. Big River. CBUAT.4 3 Kenora, Ont. CBWAT 8 Sask. CI( BI -TV -5 9 Dawson CFCR-TV.6 5 Bon Creek, B.C. CJDCTV 5 Keremens, B.C. Accord, N.B. CHSJ-TV-I 6 Deer CH KC -TV -1 5 Moyle. B.C. Bonavista, Lake, Nfld. CBYAT 12 Kildala, B.C. CKVS-TV-1 5 Nfld. CJON-TV-2 IO Drumheller, CFTK-TV-4 5 Mt. Parizeau, B.C. Bonnyville Alta, CFCN-TV-I 12 Kingston, Ont, CFTK-TV.8 5 Alta. CKSA-TV2 9 Drumheller, CKWS.TV II Mt. Poole (near Queen Boss Mountain, Alta, CHCT-TV-I 8 Kitchener, Ont. CKCO-TV B.C. Dryden. 13 Charlotte) B.C. CHQC-TV-I 4 Ont. CBWDT 9 Kokish, B.C. CFKB-TV-2 CFCRTV-16 7 Eastend, Sask. 9 Murdochville, Que. Boston Bar. B.C. CFCR-TV-9 CJFB.TVl 2 Labrador City, Nfld. CJCL-TV 13 5 Edmonton, Alta. CKBL-TV-2 6 Bowen Island, CBXT 5 Lake Louise, Alta- CFLL-TV-I 6 B.C. CBUT-4 13 CKMU -TVI 3 Bowen Island. Edmonton, Alta, CFRN-TV 3 L'Anse a Valleau, Que. B.C. Edmundston, Nakusp, B.C. CJNP-TV-I 2 N.B. CJBR-TV-1 13 CHAU -TV 7 CHAN -TV -2 3 -9 CJNP-TV-2 4 Brahmin, Elliott Lake. Ont. CBFST3 12 Lawn, Nfld. B.C. CFCR-TV15 3 Elliot CJOX-TV.2 10 Nass Camp (Near Lava Lake) Brandon, Man. Lake, Ont. CKSO-TV-I 3 Lethbridge, Alta. CJLH-TV 7 CKX-TV 5 Enderby, B.C. CFTK-TV-6 5 Brooks, Alta. CFCN-TV-3 9 B.C. CFEN-TV-I 5 Lillooet, B.C. CFCR-TV-I II Enderby, Nelson, B.C. CBUAT-I 9 Bullhead Mt., B.C. B.C. CHBC-TV-5 72 Liverpool, N.S. CBHT-I 12 CJDC.TV-2 8 Newcastle, N.B. CKAM-TV-I 7 Burmis, Alta. Falkland, B.C. CFWS-TV-1 5 Lloydminster, Alta. CJLHTV-3 3 Fisher CKSA-TV 2 Newcastle Ridge, B.C. Burnaby, B.C. Branch, Man. CBWT-I 10 London, Ont. 10 CHAN -TV 8 CFPL-TV CFKB-TV-I 7 Burns Lake, B.C. CFTK-TV-3 Flin Flon, Man. CBWBT 10 Lookout Ridge, Near 4 Fort Francis, New Denver, B. C. CHSL-TV-I 6 Cabana, P.Q. CKRT-TV-4 5 Ont. CBWCT 5 Chilliwack, B.C. CBUT-2 3 Fort Fraser, New Glasgow, N.S.CFCY-TV-1 7 Calgary, Alta, CFCN-TV 4 B.C. CKPG-TV3 6 Lumby, B.C. CHID -TV -1 5 Foxwarren, Man. Ninkish, B.C. CFNV-TV-2 6 Calgary, Alta. CHCT-TV 2 CKX-TV-I II Lynn Lake, Man. CBTA-TV 8 Nipawin. Sask- Callander, Ont- Gaspe, Que. CHAU -TV -6 Mabel Lake, CKBI.TV-4 2 CFCH-TV 10 10 B.C. CHPP-TV-1 8 North Battleford, Sask. Campbellton, N.B. CKCD-TV Gaspe West, Que. (Beehervaise Magdalen Islands, Que. 7 Mountain) CKBI-TV-2 7 Camp Woss, B.C. CFNV-TV-I 3 CFGW-TV-I 6 CBFCT-I 12 Geraldton, Ocean Falls, B.C. CFTK-TV-9 2 Canning, N.S. CJCH-TV-I 10 Ont. CBLAT 13 Malakwa, B.C. CFFI-TV1 5 Goose Olalla CH KC -TV -2 11 Canoe, B.C. Bay, Nfld. CFLA-TV 8 Malartie. Que. CFCL-TV-5 5 CHBC-TV8 3 Oliver, B.C. CHBC-TV.3 8 Canoe Mountain, Near Grand Bank, Nfld. CJOXTV.I 10 Manicouagan, Que.CKHQ-TV-I 10 Ottawa, Ont. CROFT 9 Valemont, B.C. CFCR-TVl4 8 Grand Falls, Nfld. CBNAT 11 Manitouwadge. Ont. CBLAT-I 8 Grand Falls, CBOT 4 Carleton, Que. CHAU -TV 5 Nfld. CJCN-TV 4 Marquis, Sask. CKMJ-TV 7 C)OH-TV Carlyle Lake, Sask. Grand Forks, B.C. Marystown, Nfld. 13 CFSS-TV 7 CBUAT-5 5 CBNT3 5 Outardes, Que. CKHQ.TV.2 12 Castlegar, B.C. Grande Prairie, Alta. Matagami, Que. CBUAT-2 3 CBXAT 10 CKRN-TV-4 7 CI(HQ-TV-4 7 Causapscal, Que. Grande Matane, C1(BL-TV-5 6 Vallee CKBL-TV3 II Que. CKBLTV 9 Parry Sound, Ont. CKVR-TV-I Cawston, B.C. Greenwater Lake, Sask. II CHIC -TV -3 3 CKBL-TV6 6 Passmore, B.C. CH MS -TV -2 2 Celista, B.C. CH BC 4 Meadow -TV -6 6 CKBI-TV.3 Lake, Sask. Peace River, Alta. CBXAT-I 7 Chandler, Que. Haliburton, Ont. CKVR-TV-3 5 CHAD -TV -4 7 CKSA-TV-I 12 Peaehland, B.C. CH PT -TV -I 5 Chapleau, Ont- 7 Halifax, N.S. CBHT 3 Medicine CFCL-TV-6 Hat, Alta. CHAT -TV 6 Pembroke, Ont- CHOV-TV 5 Charlottetown. P.E.I. Halifax, N.S. CJCH-TV 5 Melita, Man. CKX-TV-2 9 Penticton. B.C. CH BC-TV-1 13 CFCYTV 13 Hamilton, Ont. CHCH-TV 11 Merritt, B.C. Cherryville, B.C. CFCR-TV-3 10 Perce, Que. CHAD-TV5 2 CJWR-TVI 10 Hearst, Ont. CBFOT-2 7 Mica Creek Chicoutimi, P.Q, Village, B.C. Perrys, B.C. CHMS-TV3 5 CJPM-TV 6 CFCL-TV-4 4 Chilliwack, B.C. CFZQ-TV-2 5 Peterborough, Ont. CH EX -TV 12 CHANTVI II High Prairie, Alta. CBXAT-2 2 Micoua, Que. CKHQ-TV3 6 Pivot, Alta. CHAT-TVI 4 k104 RADIO-TV EXPERIMENTER

www.americanradiohistory.com C.L. Chan. Location C.L. Chan. Location C.L. Chan. Location C.L. Chan. Location P. Q. Val D'Or, Que. CKRN-TV-2 8 Nfld. CBNT-2 12 Riverhurst, Sask. CJFB-TV-3 10 St. Georges de Beauce. Placentia, 2 Val Marie, Sask. CJFBTV2 2 Albumin. B.C. C9UT-3 4 Rivière-au.RenardCHAU-TV-7 7 CBVTI Port 8 Vancouver. B.C. CBUT 2 9 du Loup. Que. St. John's, Nfld. CBNT Port Alfred. Que. CKRS-TV-I Rivière B.C. 7 2 CKRT-TV 7 CJON=TV 6 Vernon. CHBC-TV2 Port Alice, B.C. CKPA-TV-I Que. Victoria, B.C. CHEK-TV 6 Ont. CKPR-TV 2 Riviere du Loup, Que. Ste. Marguerite-Marie, Port Arthur. 2 Marie, Que. CKRN-TV-3 6 Port Aux Basques, Nfld. CKRT-TV-3 13 CHAUTV-1 Ville 10 Alta. CBYBT 3 Roberval. Que. CKRS-TV-3 8 St. Quedtin, N.B. CHAUIV-2 Waterton Park, Que. -3 10 Rouyn, Que. CKRN-TV 4 Ste. Rose du Déeelé. Que. CJWP-TVI 12 Port Daniel, CHAU -TV 2 Port Hardy, B.C. CFKBTV3 3 Saint John N.B. CHSJ-TV 4 CKRT-TV-2 Wawa. Ont. CBLAT-3 9 Port Renfrew, B.C. Salmon Arm. B.C. CHBCTV-4 9 Stephenville, Nfld. CBYT-I 8 Westwold, B.C. CFWS-TV2 12 CJTV-TV-I II Saskatoon, Sask. CFQC-TV 8 Stranraer, Sask. CFQCTV-I 5 Whitecourt, Alta. CBXT-2 9 7 Rexten. Nfld. CBNT-I 13 Ste. (Marie, Ont. CJIC-TV 2 Sturgeon Falls, Ont. CBFBT Port Sault 13 Williams Lake, B.C. Prince Albert, Sask. CKBI-TV 5 Savona. B.C. CFCR-TV-7 8 Sudbury. Ont, CBFST-1 5 CFCR-TV5 8 George. B.C. CKPG-TV 2 Que. CFKL-TV II CKSO-TV Prince Schefferville, 5 Willow Bunch, Sask. 5 Que. 7 Swift Current, Sask. CJFB-TV Princeton. B.C. CHGP-TV-1 Senneterre. CKRNTV-I 4 CK&KTV-2 6 Prince Rupert CFTKTV-1 6 Sheet Harbour. N.S. CBHT-4 11 Sydney, N.S. CJCB-TV 12 Windsor. Ont. C LW -TV 9 Promontory Mountain. B.C. Shelburne, N.S. CBHT-2 8 Temiscaming, Que. CBFST2 -TV 7 CJTK -TV.I 3 Wingham, Ont. CKNXTV 8 CFCR-TVl2 5 Sherbrooke, Que. CH LT CFTK-TV Quebec. Que. CBVT 11 Sioux Lookout, Ont. CBWOT-I 12 Terrace, B.C. Winnipeg, Man. CBWFT 8 CFCM-TV 4 Lake (near Penticton), The Pas, Man. CBWBTI 7 CBWT 6 Skaha Ont. CFCL-TV 6 CKMI-TV 5 10 Timmins. CJAY-TV 7 B.C. CHBCTV7 9 7 CBFOT Wynyard, Sask. CHSS-TV 6 Quesnel, B.C. CFCR-TV-II Smithers, B.C. CFTK-TV2 5 6 13 Toronto. Ont. CBLT Quesnel, B.C. CKCQ-TV-I Sointula, B.C. CFKBTV-4 5 9 Yellowknife, N.W.T. Deer. Alta. CKRD-TV 6 CFTO-TV 8 Red Spenees Bridge, B.C. Trail, B.C. CBUAT II CFYKTV Red Lake, Ont. CBWET 10 S CJNA-TV-I 3 Trois-Rivières, Que. CKTM-TV 13 Yorkton, Sask. CKOS-TV Regina, Sask. CH RE -TV 9 CBHT-S II Squamish. B. C. 7 Ueluelet, B. C. CKUP-TV-I 6 Yarmouth, N.S. Regina, Sask. CKCK-TV 2 CHANTV-3 Balfour, B.C. Squamish, B. C. CBUT5 11 Lesalqultek Lake, N.B. Yuill Mountain, Revelstoke, B.C, CFZQ-TV-1 9 CKBFTV-I 5 Rimouski, Que. CJBRTV 3 St. Andreas, Nfld. CBYBTI 6 CKAM-TV 12

olll ,,lll111111111111111111011m11.111111 1111111111111111.111m,1111111,111111111111111111111111111111111111111111111 11111111.111111111111111111111111e1111,111,11111111111111111111111111.111.11111111

A THANK YOU NOTE FROM THE EDITORS

Thank you! The Editors of Station CHAM, Hamilton, Ont. Jerry Padgett, R -TV EXPERIMENTER would Station KCUI, Pella, Iowa Kansas City, Kans. like to thank all readers who William E. Eisenberg, Helen Parker, N.Y., N.Y. offered information on station Pittsburgh, Pa. Jim Rueskee, Hillsboro, Ore. changes, additions and dele- Jason Farlam, Capetown, Ont. Bill Sand, Chicago, Ill. tions during the past few John Fitzgerald, Mercer, Pa. Gladys Sienkiewicz, months. Though many of the Richard A. Flanagan, Brooklyn, N.Y. letters overlapped, each aided Weehawken, N.J. Ernst Smith, Alton, Ala. us considerably in making the Stanley Garfield, Tenafly, N.J. Clifford Steggell, task of keeping White's Radia James Harvey, Centralia, Mo. E. Detroit, Mich. Log as current as possible at Jack Hannen, Ocala, Fla. Loren G. Vanderzyl, press time. If we left your Howard Hoffman, Pella, Iowa name out, please forgive us! Suffern, N.Y. Gary Yates, Ogden, Utah

1111111t11111111,1111111,11,,,11,,,.,1e1111111.1e1111111111111111113

31 For this issue we have some real goodies you're also in Inner Mongolia. for you to seek out from the static in DX- 3. With the government urging us to curb ing's biggest no -prize non -contest. Let's see our overseas travel we can still play at being how your ability and equipment stack up in part of the international jet set. It's easy, the hunt for the following stations: just tune your receiver to 8879 kHz some 1. Nepal is one of those mysterious little evening and listen to the jets talking to the Asian countries which seldom make the ground stations throughout Europe, Africa,

headlines, and even less often the loudspeak- 111111M1111111111111111111111111111/111111111111111111111111111101111111111, er of a shortwave receiver. They are in there This Issue's Contributors though and it's a real challenge to dig them Herbert Yem, Costa Mesa, Calif., Saul Crokos, out. Look for Radio Nepal, in Kathmandu, New York, -N. Y., William E. DcDevlin, Jr., Boston, broadcásting in English at 1400 GMT on Mass., Chuck Henderson, Miami, Fla., Richard Mon- 4600 kHz. They are also being reported Vezzani, E. Northport, N. Y., R. L. Oulette, treal, Que., Jim Gibson, Paris, Tex., Julian M. a program on 4500 and 7100 with Sunday Brooklyn, N. Y., Harry Rivers, Pitts- 0805 Sienkiewicz, kHz from 0745 to GMT. burgh, Pa., Mark Tapley, Lynchburg, Va., Tom 2. While we're in the remote reaches of Kneitel, New York, N. Y., "Red" Eldridge, Downers Asia, would you believe that there's also a Grove, Ill., Bill Fernandez, Santa Ana, Calif., George station in Inner Mongolia? Surely is, and if Howell, Vancouver, 8. C., Leon Costanzas, Cov- you try real hard (with a good receiver) you ington, Ky., Harris Sobin, Dallas, Texas, Frederic just might hear it! The station is located Merton, Atlanta, Ga., Ken Girard, Milwaukee, Wisc., APO, in and operates 4068 kHz from Victor Weintraub, Skokie, Ill., Phil Confer, Huhehot Geneva, is in San Francisco, Calif., Ted Brookman, 2200 GMT. Another one reported Marty Vidal, 2330 Wisc., A. D. Van Cook, Bermuda, Hailar and is on 3900 kHz from GMT, Wes Flint, Dallas, Tex., band and you Stone Mountain, Ga., but this in the 75 -meter Ham George Ent, Jersey City, N. J. can probably forget about hearing it unless v.vw1,1,1,1,1,411.,,w1u1,11u,1w,1.1w1.11,uw11,,,,,, 111,11111111,..,,,1.11.,,,,,111111,11

105 AUGUST -SEPTEMBER, 1968

www.americanradiohistory.com WHTE'S it has been heard and you might try to cash in on this. Look for the French Telecom- Qaoo munications Service, in Fort de France, on 17575 kHz at 1215 and 1800 ..GMT. aoc 8. Do you wait for Kuwait? If so, wait no longer, this tiny Persian Gulf country is the Pacific. How many ground stations and being heard on 4967 kHz from 0400 to 0600 aircraft can you log in a 30 minute period? GMT. o 4. Not to forget those .of you who prefer 9. The Swiss Red Cross is going to run ship travel to the airliners, here are some some radio tests from their seldom -heard hints on listening to ships on the high seas transmitter. 'Die tests will run from now communicating with shore stations. For in- until the end of November (only 2 or 3 days stance, if you listen on 12355 kHz tonight per month) and are on 7210 kHz at 0600, you might be treated to some of the major 1130, 1700, and 2300 GMT. If you hear passenger liners contacting ports throughout the tests, send a report to them at 7 Avenue the world. How many can you log in 1 -hour? de la Paix, Geneva, Switzerland. You'll get 5. Tune to 9555 kHz. Do you hear the a QSL if your report is complete and correct. BBC's West African Relay Station in Mon- 10. Listen in on the latest charges, coun- rovia, Liberia? You do? Good, take 5 points ter -charges, peace talks, peace -talk condem- off your score because the station just ceased nation, etc., etc. from North Vietnam's one operation. If you didn't hear it, give your- and only Radio Hanoi, also calked The Voice self a 5 point bonus for being honest-a rare of Vietnam. In English at 1000, 1300, 1530, quality in many areas of the DX reporting and 2300 GMT on 7210, 9760, 9840, hobby. 11760, and 11840 kHz.' If you have a good 6. Get this one while it's still on the air! sense of humor you'll enjoy their rantings. It's The Voice of The Arctic, a bootleg 100 - Here's how to score. 10 points for num- watt broadcaster which transmits programs bers 1, 2, 6, 7, 8, 9, 10. Numbers 3 and 4 to the Eskimos in their own language on the get one point per logging. Number 5, as Ham -band frequency of 3750 kHz. The indicated. owner, a colorful fellow by the name of Since this month we had a few real tough- Dutchman Joe Sanders, is trying to get the ies thrown in we'll go easy on the ratings, station licensed by the ' Canadian D.O.T. but you should make a showing of at least Schedule isn't regular, so check the channel 30 points without any trouble. From 31 to from time to time. 50, very good! From 51 to 60, excellent. 7. Martinique is a beautiful island which From 61 to 80-you're a super shortwaver! isn't too often reported by listeners. Of late, Above 80-who are you trying to kid? 1111111111111111111111111111111111111111111. WW11111,,,,,1 111/,,1x,111,11,1111111/1111,111,1111,1,1,1o,,,,,,,,,,1111111,1111,,,111,,1, 1,,,,,,,,,,,,,,,1,,,,,,1,,,,,,,,,,,,1111111,1,,,,,,,1,,,,,,,,,,,x,,,1,1 ros,,,,1 kHz Call Identification Location GMT kHz Call Identification Location GMT

4870 YVKP R. Tropical Caracas, Venez. 2330 90 -Meter Band -3200-3400 kHz 4890 - Ici Senegal Dakar, Senegal 0710 4910 HIN R. Noticias Santiago de los Caballeros, D.R. 2150 3265 - R. Demerara Georgetown, 4915 - R. Ghana Accra, Ghana 0700 0245 4925 Quito 3305 VL8BD R. Daru Daru - R. Quito, Ecuador 0415 1205 4930 YVOT R. Junin 3335 VL9CD R. Wewak Wewak, New San Cristobal, Venez. Guinea- 1245 0440 V. Nigeria Lagos, 3340 - R. Tulcan Tulcan, Ecuador 0330 Nigeria 0600 4945 R. RSA 3346 - R. Zambia Lusaka, Zambia 0400 - Capetown, S. Afr. 2230 4955 HJCQ R. Nacional 3365 - R. Exitos Santiago, Dom. Bogota, Col. 0400Cumana, 4960 YVQA R. Sucre Rep. 0310 Venez. 0317 3400 4965 - R. Santa Fe Bogota, 0450 Peoples Liberation Fukien, 1130 Colombia Army 4985 CP75 La Cruz del Sur La Paz, Bolivia 0245 4990 V. Nigeria 4715 CR4AB R. Clube Mindelo Sao Vicente, Cape - Lagos, Nigeria 2210 4995 - R. Omdurman Omdurman, Sudan 2125 Verde Is. 230G 5005 CAX2S R. 4753 RRI Jaen Lima, Peru 0330 - Makassar, 5010 Forces - BC 1230 1245 5020 HJFW Trasmisoras Caldas Manizales, 4770 - R. Bolivar Caracas, Venez. 2315 Colombia 0015 ELWA R. Village Monrovia, Liberia 0610 4780 YVLA V. de Carabobo Valencia, Venez. 0000 4815 - R. Haute Volta Ouagadougou, 60 -Meter Band -5950-6200 kHz Upper Volta 0617 4820 HRVC V. Evangelica Tegucigalpa, 5954 TIQ R. Casino Puerto Limon, C.R. 0545 Hond. 0100 5955 - R. Canada Montreal, Que. 0600 4845 HJGF R. Bucaramanga Bucaramanga, TGNA R. Nacional Guatemala City, Colombia 0345 4850 YVMS Guat. 1100 R. Universo Barquisimeto, 5980 - R. Demerara Georgetown, Venez. 0320 Guyana 0945 4855 R. Enugu - Enugu, Biafra 2130 5990 - R. Sweden Stockholm, Sweden 0015 4860 YVQE R. Mundo Maracaibo, Venez. 0240 6000 R. Americas Swan Island 0030 4865 CR6RN R. Clube de Angola Angola - 2230 6005 CFCX - Montreal, Que. 2330 106 RADIO-TV EXPERIMENTER

www.americanradiohistory.com Location GMT kHz Call Identification Location GMT kHz Call identification 2105 2015 11720 R. Canada Montreal, Que. 6015 BC Berne, Switz. - 2355 -Swiss N6th. 1030 11725 BBC Far East Svices. 6020 PCJ R. Nederland Hilversum, - Morocco 1845 N.C. 0110 11735 R -TV Francaise Rabat, 6030 A F RTS Greenville, - Mexico City, Mex. 2115 CFVP V. of the Plaines Calgary, Alberta 2400 11740 XEMP - 6045 Universidad San Luis Potosi, -R. Mex. 0300 25 -Meter Band -11750-11975 kHz 6050 HCJB V. of Andes Quito, Ecuador 0718 Rome, 1940 35 RAI 1750 Far East Network Tokyo, Japan RAI Rome, Italy 0430 - 0030 6075 - 1760 HVJ Vatican R. Vatican City Vancouver, B.C. 1500 0720 6080 CKFX 1775 Swiss BC Berne, Switz. R. Recife, Brazil 0830 - 0630 6085 ZYK2 Jornal 1780 ZL3 R. New Zealand Wellington, N.Z. R. Prague Prague, Czech. 0740 Lion, Pa. 2100 6090 - 1795 WINB Red Belgrade, Yugo. 2000 - Is. 0105 6100 R. Belgrade R. Nacional Tenerife, Canary Hermosillo, Mex. 0010 1800 - 0120 6115 XEUDS - 1810 RAI Rome, Italy R. Habana' Havana, Cuba 0520 - 1730 6135 - R. Algiers Algiers, Algeria V. Nigeria Enugu, Nigeria 0600 Neth. Ant. 0030 6145 - 1815 PJB Bonaire, R. RSA Johannesburg, Haitien, Haiti 1300 6150 - 1835 4VEH V. Evangelique Cap S. Afr. 2345 2330 1840 V. West Lisbon. Portugal Austrian R. Vienna, Austria 2311 - Paris, France 1810 6155 - 1845 R -TV Francaise Calgary Alta. 0545 - USSR 0450 6160 CFCN - 1850 R. Moscow Moscow, Mexico City, Mex. 0000 - I. 2300 6165 XEWW - 1860 BBC Ascension 6174 R. Nacional Bogota, Colombia 0345 - Berne, Switz. 1130 - Kuala Lumpur, 1865 - Swiss BC 6175 V. Malaysia R. RSA Johannesburg, - Malaysia 1215 1900 - S. Afr. 1600 R. Nacional Guatemala City, Rome, Italy 1605 6180 TGWB 1905 RAI Guat. 2330 - 1155 V. Bangkok, Thailand San Jose, C.R. 0520 1910 - R. Reloj Ecuador 0330 6205 - 1915 HCJB V. Andes Quito, AddisEd Ababa, 1920 ETLF R. Voice of Gospel 0430 Band -7100-7300 kHz 41 -Meter Havana, Cuba 2030 193011993305 R. Habana - 0345 1130 1935 V. West Lisbon, Portugal 7115 V. Thailand Bangkok Thailand - 0305 - R. Peking Peking, China China 0100 1945 7120 R. Peking Peking, - Liberia 0815 - Guinea 0600 1950 ELWA R. Village Monrovia, 7125 V. Guinea Conakry, Kiev, USSR 1850 - BBC London, England 2330 1980 - R. Kiev 7130 1805 0600 1990 R. Prague Prague, Czech. 7150 . London, England - 5050 R. Liberdad (clandestine) 2150 7165 Idaat AI - Peking, China 0010 - Malmakete Libya 0445 5060 - R. Peking R. Euzkadi (clandestine) 2130 R. Noumea Noumea, 5078 - 7170 - R. Delhi, India 1800 Caledoniaa,wu 0735 5080 VUD All India Liberia 2310 7195 - V. America Monrovia, 7200 R. Afghanistan Kabul, Afghanistan 1300 19 Band-I5100-15450 kHz - Austria 0530 -Meter 7245 - Austrian R. Vienna, Tirana, Albania 0035 2230 7300 ZAA R. Tirana 5110 XERR Mexico City, Mex. R. Prague Prague, Czech. 0010 2130 7345 - 5115 R. Dakar Dakar, Senegal Kol Zion Tel Aviv, 2100 2145 9009 4XB3I 5120 R. Lagos Lagos, Nigeria R. Nacional Madrid, Spain 0015 2215 9360 - 5125 ZY- N32 R. Soc. de Bahia Salvador, Brazil R. Alma Ate Alma Ata, USSR 0115 0215 9380 - 5125 BED60 V. Free China Taipei, Formosa 0200 5135 V. Japan Tokyo, Japan 2230 Band -9500-9775 kHz 5140 BBC London, England 3I -Meter 0230 5145 ZYK33 R. Jornal Recife, Brazil Helsinki, Finland 2300 R. Intl. Berlin, E. 0100 5155 R. Finland 9505 - Berlin Monrovia, Liberia 1845 London, England 1015 5155 EL-WA R. Village 9510 - BBC Paulo Sao Paulo, Brazil 0045 0500 R. de Sao 9515 XEWW Mexico City, Mex. ZYB9 - R. Vienna, Austria 1930 9520 R. Denmark Copenhaagen, 5210 Austrian - 1015 V. America 0050 R. RSA Johannesburg, 9525 PCJ R. Nederland HilversuNethem,\ 5220 0600 S. Afr. 2330 Ceylon 300 Accra, Ghana 1915 5230 R. Ceylon Colombo, 9545 - V. Ghana - Belem, Brazil 900 Norway 0455 5245 ZYE2I R. Marajoara 9550 R. Norway Oslo, 1700 - Lima, Peru 0110 V. Nigeria Lagos, Nigeria 9565 OAX4R - Havana, Cuba 2300 Johannesburg,S. 5270 R. Habana 9575 - R. RSA - Accra, Ghana 1845 0600 5285 R. Ghana - Mozambique Lourenco Marques, 9585 V. of West Lisbon, Port. 2310 5295 - Aqui Hilversum, Neth. 0440 Mozambique 9590 PCJ R. Nederland Karachi Pakistan 2005 R. Japan Tokyo, Japan 1715 5335 - R. Pakistan 9605 0215 - Cologne, W. 5435 .V. Free China Taipei, Formosa -DM Q9 Deutsche Welle - Phil. 2330 Germany 1050 5385 - Far East BC Manila, 0230 Montreal, Que. 2100 5400 V. America Greenville, N.C. 9610 - R. Canada Cologne, W. Bonaire, Neth.Ant. 5405 DM- Q15 Deutsche Welle 9615 PJB - 2330 Germany 1900 0300 USSR 2245 5430 V. Free Korea Seoul, Korea 9620 R. Kiev Kiev, - 2350 - Montreal, Que. 0110 5435 BBC Far East Svce. Malaysia 9625 - R. Canada - Brasilia, Brazil 0320 9635 ZYR83 R. Ararecida Sao Paulo Brazil 2300 5445 ZYN32 R. Nacional R. New York 9640 DMQ9 Deutsche Welle ' Cologne, W. 7760 WNYW Germany 1100 Worldwide. New York, N.Y. 2130 Monrovia, Liberia 1600 . San Jose, G.R. 1430 ELWA R. Village 9645 TIFC Faro del Caribe Tokyo, Japan 0000 9665 Swiss BC Berne, Switz. 1130 17785 - R. Japan - RSA , Johannesburg, 9690 LRA R. Nacional Buenos Aires, 17805 - R. Argentina 0200 S. Afr. 2340 R. Sofia Sofia, Bulgaria 0000 17845 WNYW R. New York 9700 - New York, N.Y. 1800 9712 OAX9C R. Tropical Terapoto, Brazil 0400 Worldwide R. Melbourne, 9715 PCJ R. Nederland Hilversum, Neth. 1025 17870 - VOA Munich, W. Australia 2250 9760 - 1230 Germany 1605 17875 R -TV Francaise Paris, France - N.C. 1830 BBC London, England 1720 17890 V. America Greenville, 9770 - - Pakistan 1335 R. Pakistan Karachi, 9833 - R. Budapest Budapest, Hungary 0030 17950 - 10530 - R. Alma Ata Alma Ata, USSR 0210 11685 - R. Diamang Dundo, Angola 1930 13 -Meter Band -21450-2.1750 kHz 11705 R. Japan Tokyo, Japan 2250 - Sweden 2250 - R. Sweden Stockholm, Bethany, Ohio 2110 21485 V. America 11710 R. Australia Melbourne, - Johannesburg, - Australia 0710 21535 - R. RSA S. Afr. 1800 11715 - V. America Okinawa I. 2300 107 AUGUST -SEPTEMBER, 1968

www.americanradiohistory.com this to be sent before signing the calls, again Harn Traffic to give the other chap a warning as to what's on your mind. Continued from page 78 For example, when I run out of things to say to WA2CQL, I would send SK WA2CQL which expires while he's on overseas military DE W7DQS K. He would then say what was duty, he may apply to have it renewed when on his mind, send a 73 (I hope!) and sign he returns to the U.S. Formerly, Novice out, concluding the QSO. I might send a tickets were not renewable. This exception snappy GE meaning good evening, or GN to the rule is a worthwhile one. meaning good night and the QSO would be Radio Shorthand. In a previous column, ended. some radio operating procedure signs ("pro - KN (with the letters run together: dah- signs") for use on CW were introduced as didandandit) is a go ahead to the specific an aid to efficient operating. Here are some station you called, with the additional request more you can put to use. AR (sent with the that no one try to break in. This one is not letters run together, like this: didandidandit) used very often (there really isn't much need has two uses. It can mean go ahead when for it), but once in a while it comes in handy. you have called another station, but haven't Anyone trying to break into a QSO after actually made two-way contact yet. For ex- hearing KN sent is a double -headed, droop - ample, if I called WA2CQL, I would send eared, diddle -brained lid. Agreed? WA2CQL DE W7DOS AR on my first call. AS (with the letters run together: didah- After he acknowledged my call, I would no dididit) means simply wait. You use it any- longer use AR when telling him to go ahead, time you need to stop sending for a few but would use the normal K each time I seconds, but want the other op to sit quietly stood by for him. until you resume. You can use it any time The other common meaning for AR you need to look up something in a book, (again with the letters run together into one pick up a pencil that rolled under the desk, Morse character) is to serve as a warning put out the cat, or hush up the kids. As to the station you're working that you are a matter of courtesy, try not to make the preparing to stop transmitting and will other listen fellow wait too for him. In this case, you send AR before long. The pro -sign actually sending the calls. You still use the C means simply yes and N regular K after signing the calls. means no. They're very useful because For example, after concluding one trans- they're short, and there's no chance of a mission in a series making up a QSO, I mistake if they are sent clearly. Even so, would send AR WA2CQL DE W7DQS K. many hams ramble on and on to say what a The AR serves to tell WA2CQL that it'll be simple dandidandit or dandit would do. his turn to transmit in a jiffy, so he'd better Pro -signs can speed up CW operating tre- push aside his coffee cup and reach for the mendously by taking care of all routine busi- transmitter key. ness with snappy abbreviations and allowing SK (again sent with the letters run to- more time for the real meat of your trans- gether: didididandidah) means, this is my missions. Use 'em ofteh-and accurately!- final transmission, but I will stand by for and you'll soon rank among the pros on the your final. Good operating practice calls for ham bands.

...... ,.,...... ,11.1111,...,1111.,.111111111.11.1...,.....,..,,..,.....,,,,,...... ,1111111111111111111. .1,.1,.1111111.1111...,...,..,111111,11111111111.,...,...... ,.....11111.,..,.111....1.111.1111..1111111111111... Pitts came in, tight-lipped and plainly an- Hear That Star? noyed, clutching ascrap of notebook paper n his right hand. He looked like he thought Continued from page 60 the sky was falling. "We have two complete words, and the "No need," said Gerard. "I have one crew rest is falling into place quite rapidly," he running a complete recheck of all equipment told Gerard. "But I'm afraid the staff is a while Pitts and his boys play anagrams with little upset." your new theory of versified astronomy. Be- Paul looked quickly at Gerard, then jerked sides, if I went down there'Pitts might start the sheet from the young man's hand; and asking questions, and then what would I he and Gerard read it together. It said, say?" "Twinkle, twinkle ... " 108 RADIO-TV EXPERIMENTER

www.americanradiohistory.com done by a transistorized RF keyer. The keyer New Products also switches the high -voltage power supply on during transmit time, thus allowing a very low Continued from page 33 standby receive current drain. The operating voltage is 12-14 VDC, negative ground only; input impedance is 52 ohms; output impedance, 52 ohms. Size is only 2 x 6 x 8 in., and the Black Cat weighs 3 lbs. Maximum output, is 75-100 watts; maximum power gain 14-16 dB. The manufacturers would have you put a Black Cat in your trunk, instead of a tiger in your tank. List price is $147.50, and you can get further specs from Wawasee Electronics Co., Box 36, Syracuse, Ind. 46567.

Light Around a Corner Here's a neat tool for hobbyists! A flexible flashlight which can be twisted, bent around corners, snaked into narrow openings. Based Martel Electronics Sales Uher Deck 7000 on the principle of the gooseneck lamp, the body is 5 -in. long and the flexible head is an- 33/4 ips. And the Uher Deck 7000 is ± dB @ other 4 in. It has a black leatherette cover and Write to Martel Electronic Sales, only $139.95. a clip for fastening to shirt or belt. The price S. Cotner Ave., Los Angeles, Calif. Inc., 2356 is $2.00 postpaid, less batteries. Send for this 90064, for further info. handy dandy to Bryce -Branton, 690 Southern Ave., Muskegon, Mich. 49440. Little Box-Lotsa Zotz! The Black Cat from Wawasee Electronics (model JB75A) is a mobile linear amplifier for 10 -meter ham band and business band operating from 21-38 kHz, principally designed for re- mote operation with complete automatic switch- ing of the antenna for transmit-receive. This is

Wawasee Electronics Black Cat Bryce -Branton Flexible Flashlight

1111111 1111111111111,11111111 1111111u1 111111111 u11111111111111,11111111111111111 1111.11 u.. n1 m m11n n n n u n mm nu m m u n1 n n i111111111111111 11111111111111111111111111111111111111 m i n n m m11 n m i n m m11 n n u n n u mi n n n m m11 n n m n m m u n n n m i mm n n n n n n nn m1/n n n n u n n n u n n n . enough to trigger on light reflected back "No -Parts" Slave Flash from the subject being photographed. Angle of light acceptance is approximately 180 Continued from page 56 deg with the LASCR lens unshielded. If narrow angle of acceptance is desired, the tube. with most modern-day miniature electronic LASCR can be recessed into the plastic self -triggering has flash units. Some flash units require a polar- No inclination toward ized standard AC plug, available at most been evidenced in various levels of ambient such that photo dealers. A possible connector varia- light. However, if conditions are units, sen- would be to install a P -C type connector the ambient light triggers the flash tion the value directly at the end of the plastic tube. No, sitivity can be reduced by reducing interconnecting cable would then of the gate resistor. additional for this the electronic flash would plug Since no batteries are required be required; used, directly into the triggering unit just like they unit, and a minimum of components life, in -for each other. reliability is extremely high. Useful were made failure. Sensitivity of the assembled unit is high fact, is limited only by mechanical 109 AUGUST -SEPTEMBER, 1968

www.americanradiohistory.com In 1962, Sarnoff presented what many con- Bookmark sider to be a definitive projection of man's world Continued from page 26 at the end of the century. Writing in Fortune Magazine, he outlined the shape of things to come-in food resources, Sarnoff's papers of six decades are assembled raw ma- terials, energy, health, communications and for the first time in a new book, Looking Ahead: transportation, The Papers among others. And he . wrote: of David Sarno, published by Mc- "By the year 2000 Graw-Hill. Tracing A.D., I believe our descend- the origins and growth of ants will have the technological modern communications and electronics, from capacity to make obsolete starvation, to lengthen the earliest wireless signals to globe-orbiting appre- ciably the Biblical lifespan and to chance communications satellites, the book is probably hereditary traits. They will have a limitless the most authoritative personal report on the abundance of energy sources and raw 20th Century's most dynamic industry and art. ma- terials. They will bring the moon and Scoffed at by associates in the industry, some- other parts of the solar system within the times denounced as a dangerous human visionary, domain. They will endow machines Sarnoff's restless mind probed far into the future with the capacity to multiply thought and logic a seeking new opportunities and uses for the millionfold." fledgling communications art. As he himself As science continued confessed: "Because to unfold at an astound- my knowledge is so little ing pace, Sarnoff's mind as compared with turned typically from our technical experts, I am problem to solution. At the not so troubled by celebration of his the difficulties which they 60th anniversary in communications with their greater knowledge and elec- can see, and I tronics, he said: "In the past therefore place no brakes sixty years our on my imagination." attention has been focused primarily Thus in 1922, when on the RCA had barely begun means to translate scientific knowledge to manufacture the first "Radio Music Boxes," to prac- tical ends. Now I believe we must Sarnoff was writing to RCA's involve our- Directorof Re- selves in the social applications of technology search asking him to develop a portable with the same energy and devotion that we "radiolette" that would transmit information give to its development. "not As the creators of only at home but in the office, workshop, progress, we share street a new and fundamental re- or elsewhere." sponsibility to the purpose In the same it serves." year, he submitted still another Always a realist, Sarnoff's plan for a thinking neverthe- separate company to conduct broad- less reflects a fundamental casting optimism about the and to be known as the "Public Service prospects of the Broadcasting human race. In the last- ex- Company, or National Radio cerpt to appear in Looking Ahead, Broadcasting Company, or American he writes: Radio "If we muster the wisdom to use the Broadcasting Company, or some tools similar name." which technology has given us, the generosity Four years later, the National Broadcasting to devote them Company, to the benefit of all men, the a separate subsidiary of RCA, was humility to live born. in harmony with nature, there is little in the spectrum While of human progress that radio was still in its infancy, Sarnoff's is not within our grasp." mind was ranging far ahead to new fields. In Looking Ahead: The Papers of David 1923, he told the RCA Board of Directors: "I Sarnoff, was published by the McGraw-Hill believe that television, which is the technical Book Company and is available name for seeing instead of at libraries, hearing by radio, bookstores, or direct from the publisher will come to pass in due course." And nearly -330 a West 42nd Street, New York, N. Y. 10036. decade before the public was to see its first j commercial sets, in 1930, he spoke of television "advanced to the stage when color as well as shadow would be faithfully transmitted." In 1934, when airplanes were still a novelty, Sarnoff was already intrigued by the possi- bilities of outer space. "We might point to the great frontier that lies daily and nightly above us," he told an audience, "and ask if there is not enough wealth and mystery in the air and sky to test the ingenuity of several future gener- ations." As his interests broadened and his experi- ence deepened, Sarnoff's vision scanned the widening spectrum of technology and progress. In 1946, he was already speaking of communi- cations through space, atomic power for in- dustry and the conquest of disease, global "That's neat, Roger. Is it solid state?" weather control. á

110 RADIO-TV EXPERIMENTER

www.americanradiohistory.com Using It. Practice operating Gold Grab- Gold Grabber ber by burying several sections of aluminum in loca- Continued from page 44 foil a few inches under the ground tions with differing types of soil and gravel. locator close to the surface the tuning screw of L2 until you hear a loud Hold the metal the tuning slug of beat note. Further adjustment of L2 should of the earth and adjust L2 to a convenient audio pitch. cause the beat note to pass through the zero - the area until you hear beat point and back to an at e° note again. Pass the loop over change in the audio tone, then dig If a beat note cannot be heard with ad- a sudden targets. Practice with justment of L2, check the voltage on the for the aluminum foil tones until your ear is ac- gate leads of Q1 and Q2. The voltage should. different audio the change in audio pitch that be measured with a VTVM. Our unit meas- customed to metal object. ured -3.5 V at the gate of Q1 (across R1) denotes a The sensitivity of Gold Grabber is de- and V at the gate of Q2 (across R3) . -10 surface area of the metal, The exact voltages are not critical, since they pendent on the the surface, and the com- will vary with a particular FET. its depth below moisture content of the earth. If there's a negative voltage on the gates position and The energy radiated by the loop will be of Q 1 and Q2, indicating that the circuiis the earth in various degrees, are oscillating, but a beat note is not heard, absorbed by the mineral content, etc. The change the number of turns of Ll until the depending on of the metal and the closer frequency of the Q1 oscillator circuit is close larger the surface of the earth, the easier it enough to the detector circuit of Q2 to zero it is to the surface was able to find beat. is to locate. Gold Grabber foil under Finally, move a section of aluminum foil a 3x3 -in. square of aluminum You prob- towards the loop. The beat note should several inches of gravel and earth. start change frequency and indicate the presence ably can do better, so get out there and of metal. grabbing. The most extended gravitational antenna Positive Feedback available is the earth itself, and Prof. Weber's group has used it, seeking fluctuations of the Continued from page 22 earth's surface-at rates such as one fluctuation every 54 minutes. To search for these, the University of Maryland. Since about 1965, a Maryland group had to build a gravimeter that second group, under Dr. Robert L. Forward, a would sense changes of one part in a hundred former student of Prof. Weber's, has been billion. They haven't found what they seek, per- any working at the Hughes Research Laboratories in haps because there doesn't happen to be But, the instrument Malibu, Calif. Prof. Weber's group has recorded radiation at that frequency. paid for it, wants which could be the arrival of gravitation- is so good that NASA, which events to study gravity there. by astronomical bodies, but to send it to the moon al waves generated and it may save a they are. Dr. Now, that's a good idea he is far from ready to claim that if NASA sends too of lot of money; however, Forward's group has not yet seen anything up there, watch out! We were his many failure projects the sort. He is convinced that he could, may turn the moon into one vast dump-keep equipment sensitive enough. And he is seeking the moon beautiful! Government support to build more sensitive _11,11,111...... 1....1111111,.,...... 111111111,1111111.1...... 11111...111.,..11,111111,,,.,...1...11...... 1... ..I antennas. Gravitational waves should be generated by accelerated masses. In principle, a spinning rod should generate gravity waves. But in practice, something the size of a bat would tear itself apart before it could spin fast enough to generate an amount of power detectable with existing techniques. More practical sources for detectable gravitational radiation are astro- nomical bodies-planets in their orbits, stars revolving around each other-and it is gravity are being sought. To waves from these that N detect a gravity wave would mean measuring ; = "We'll go to work on it immediately. and compressions set up by a wave the tensions 1 My `ace' technician is within reach." from a distant source in a receiving body. :....1..1..11,11...... ,...,111111...1111.1,..1,.,.w1...11.1111...1.1.1...1.1111..,.,...... w.11111111111,...1.1..114.w.11á

AUGUST -SEPTEMBER, 1968 111

www.americanradiohistory.com could hook him to the telemetry equipment The Hoofin' Heart and perhaps find something wrong. Or we Continued from page 87 can see how he reacts to a different kind of training." By this time, Keystone Dream was on the But he is no stranger to the rolling farmland track, standing near Dr. Fregin's receiving and horse country around New , N.J., equipment set up on the hood of an auto- about an hour's drive from the university. mobile. The ECG tracings came steadily, With the Trotters. On a recent day there, plotting graphs on paper rolling out of the he stood between two rows of stalls and care- recorder: Satisfied that the transmitter and fully attached electrodes to Keystone Dream, receiver were functioning properly, Dr Fre- a three -year -old trotter. The bay stallion was gin signalled for Keystone Dream's workout one of more than 100 trotters and pacers on to begin. First the horse walked, then jogged, two adjacent farms, Egyptian Acres and The then went into a fast trot. As 'Keystone Farm, run separately by Stanley and Vernon Dream moved easily around the track, the Dancer, brothers whose names are practical- doctor's equipment picked up strong signals. ly synonymous with harness racing in the Dr. David A. Meirs, a New Jersey veter- United States. iñarian who cares for many of . the horses Dr. Fregin shaved patches of the horse's on Egyptian Acres and The Farm, was hair about the size of.a quarter to reach bare watching the activity from a shaded bench skin where he could glue the electrodes for at trackside. his telemetry equipment. "It's important to "The fact that Dr. Fregin is a cardiologist be very careful applying the electrodes," Dr. sets him apart from most of the other veter- Fregin stated. "We don't want to use any- inarians in the United States," Dr. Meirs thing on the skin which might later cause said. "And the fact that he further specializes irritation." in horses sets him apart from all but a hand- It took the doctor several minutes to at- ful of the others. But because he is now tach electrodes to Keystone Dream's back, involved in radioelectrocardiography in vet- just behind his neck. Then he cleaned the erinary medicine, you have to call him a hair from a patch on the horse's chest be- pioneer. This work just hasn't been done tween the forelegs and attached an electrode before." there. Dr. Meirs said there were thousands of A few minutes later, the doctor and a applications for radio telemetry in veterinary trainer, James Dancer, brought Keystone medicine. "Not just for horses, but for any Dream outside and harnessed him to a train- animal," he said. "Fred Fregin is pioneering ing cart a little heavier than the sulky a driver in some exciting work which could prove usually rides during a harness race. The very meaningful in our field." trainer climbed onto the seat and grabbed Training Techniques. Though Dr. Fregin the reins, while the doctor attached wires to is sticking to healthy, normal horses in his the electrodes on the horse, strung them preliminary studies, he, too, is excited about along the side of the cart, and connected other possibilities that are apparent for radio them to a tiny transmitter about the size of telemetry in veterinary medicine. In race a cigarette package. Dr. Fregin stuffed the horses, for example, it might be used to help transmitter into a pouch strapped to the evaluate training methods and to study the driver's back. With a click of his tongue, fitness of the animal being trained. the driver started the horse across a narrow "Certain trainers train certain ways and road toward the half-mile training track at produce winners at the track," he observed. Egyptian Acres. "But who is to say there isn't a better way Bright Future. Vernon Dancer had been to train horses? With radio telemetry, I standing near his office next to the stable think we will be able to evaluate -what is at The Farm, squinting into the sun to watch happening more scientifically." Keystone Dream being hitched to the cart. The training of race horses is but one po- "Dr. Fregin's work has all kinds of ramifi- tential. Radio telemetry does not require cations for someone like me who's training wiring an animal to á stationary machine, and racing horses," he said. Sometimes a as a regular ECG device does, so the animal horse runs very well for a while. Then, for can move about freely and unencumbered some reason, he tails off. His time isn't good. while doctors observe fröm a remote posi- He isn't running as 'well as he should. We tion. Horses, dogs, cats, or cows, for ex- lta RADIO-TV EXYERIMENTER

www.americanradiohistory.com ample, can continue to live quietly in their plications of radio telemetry to monitor other regular environment while their hearts are physiological funôtions in animals, such as constantly monitored. blood pressure, temperature, and respiration "You could use it to see how an animal (he calls them a previously untapped res- is doing before, during, and after an opera - ervoir of information). Radio telemetry be invaluable diagnostic tool in 1 tion,", Dr. Fregin comments. "With radio could an telemetry, you will be getting a truer picture veterinary medicine, according to Dr. Fre- of heart rate because nobody would be near gin, not only for detecting heart disease, but the animal to excite it." for respiratory disorders, blood disease and Research Reign3. Radio telemetry could others. be invaluable in studying the effect certain But these things are in Dr. Fregin's future. have on animals during treatment, and Right now, he is concentrating on the study one researcher recently published a paper on of strong, healthy race horses. "We have to the blood pressure of giraffes that he studied screen for the normal and find out what the in the field with radio telemetry. normal is, then later we can find the ab- Dr. Fregin is thinking ahead to future ap- normal," says he. en,,,,,,.mmulon,,,,,,,,mumnunrunu.,,,,.u,,,,.,,n.mlummo,,,,,,,,,mmu,,,,,.mon,,,,,,m,,momu. nu NATIONAL RADIO CLUB (NRC), Join A DX Club? Box 99, Cambridge, Mass. 02138. Execu- John Callarman. This is an Continued from page 83 tive Secretary, all BCB club and certainly tops in the field. Its bulletin DX News is issued averages about 40 pages. Coverage in- weekly during the summer for a total of DX, as cludes BCB, SWBC, TV and FM 34 issues per year. Research into MW DX Dues well as Ham and Utility columns. is also under way. Dues are roughly $7.75 are $4.00 yearly. yearly. CANADIAN INTERNATIONAL DX NEWARK NEWS RADIO CLUB (NN - CLUB (CIDXC), 44 Carmen Ave., Win- RC), 215 Market St., Newark, N.J: nipeg 5, Man. President, Lome Jennings. 07101. President, William Schultz. This This club is general coverage, with a club is the oldest and possibly the largest. monthly publication Messenger that runs Its monthly bulletin averages 50 to 60 to 40 pages. Columns include SW, BCB, pages and, besides general coverage, has Technical, Cardswap, and Utility. Dues exceptionally fine Ham and SWBC col- are $3.50 yearly. umns. Dues are $5.00 yearly. FIRCREST DX CLUB (FDXC), 1021 NORTH AMERICAN SW ASSOCIA- Alameda Ave., Fircrest, Wash. 98466. TION (NASWA), Box 989, Altoona, Pa. President, Juris Burkevics. This Club has 16603. Executive Editor, William Ed - a monthly publication DX Telegramme dings. This club offers excellent SWBC that runs to 20 pages. Coverage includes coverage and is an all-SWBC organization. columns on SWBC, BCB, CB, and Ham Its monthly publication Frendx averages operations. Dues are $3.00 yearly. 50 pages, and is regarded as a journal for INTERCONTINENTAL DX CLUB SWLs. Dues are $5.00 yearly. (ICDXC), 94 Pegasus Trail, Scarborough, NORTHEAST SHORTWAVE LISTEN- Ont. President, Richard Langley. Club ERS CLUB (NESWLC),.971 Iris St., stresses active participation in SWBC, Manchester, N.H. 03102. President, Nor- VHF, LF, Ham, and Utility bands. Bi- man Boisvert. Club publication, the Bul- monthly publication is called Hi. Dues letin, appears monthly. Columns include are $1.70 yearly for U.S. SWBC, TV and FM DX, Cardswap, and INTERNATIONAL RADIO CLUB OF Novice Section. Dues are $1.50 yearly. AMERICA (IRCA), Box 605, Beaverton, WORLDWIDE TV -FM DX ASSOCIA- Ore. 97005. Secretary -Treasurer, Bill TION (WTFDXA), Box 5001, Harbor Nittler. This club's publication DX Moni- Station, Milwaukee, Wis. 53204. Execu- tor is issued weekly during the BCB peak tive Editor, Ferdinand Dombrowski, Jr., season and monthly during the summer Club is all TV -FM DX, plus 30-50 MHz months;. it averages 25 pages. Coverage band. Monthly publication VHF/UHF is BCB DX exclusively. Dues are $4.40 Digest covers most topics relating to yearly. -TV-FM DX. Dues are $3.50 yearly.

AUGUST -SEPTEMBER, 1968 113

www.americanradiohistory.com bands ranging from 0.5 to 60 angstroms. What's With Old Sol? This data will provide good characterization Continued from page 48 of solar X-ray emission, and also provide a set of X-ray indices which other geophysi- cal parameters can be correlated against. chargeable nickel -cadmium, type -F cells. A Lyman -alpha telescope to scan; and

' Voltage ranges from 16.2 to 22 V. To con- record Lyman-alpha night skyglow which re- serve power, a day -night switch cuts off sults from the scattering of solar hydrogen certain experimental systems while the craft in the earth's corona. This data will lead to is in the dark portion of its orbit. Signals a better understanding of how hydrogen from solar -sensing detectors actuate the emissions from the sun are absorbed in the switches to make the instruments operational earth's upper atmosphere. at the crack of each orbital dawn. These instruments are gathering informa- Cat with Nine Lives. The electronic purer tion vital to an understanding of the sun, ring and clicking inside the OSO -IV will go and vital for the planning of safe space ven- on for six months. All the while, communi- tures of future astronauts. But the one in- cations equipment will relay data about the strument that dominates the entire project sun lapped up by the nine separate experi- is an ultraviolet spectrometer constructed at mental systems on board. An ultraviolet the Harvard College Observatory by a group spectrometer is of primary importance (see headed by Professor Leo Goldberg, and in photos and caption in box on page 48), but collaboration with Harvard astronomers Ed- here are the other eight experiments. The mond Reeves and William Parkinson. OSO -IV contains:, In the first four ..weeks of operation, the A spectroheliograph to obtain data equipment gave these astronomers over 4000 about X-ray emanations from the sun in the pictures of the sun, the like of which have 3- to 70 -angstrom range. This information never been seen before. The pictures reveal will reveal much about electron and ion wholly new information about its chemical densities in the sun's corona, and about proc- composition, and the temperature ranges at esses involved in solar flares. various heights in the sun's atmosphere. The A Bragg crystal spectrometer to de- information will almost certainly modify cur- termine the spectral differences in the sun rently held ideas about the origin and evolu- .during its flare and non -flare periods. This tion of stars like the sun. -will also distinguish between thermal and Prize Portraits. One reason why astron- non -thermal mechanisms in the X-ray emis- omers are so excited about these pictures is sion process in the 1 to 8 angstrom range. that for the first time they are able to make A celestial telescope to survey the night full -face mug shots of the sun's corona. Pre- sky for cosmic sources of X-radiation with viously, the sun's corona could only be energies from lh to 30 keV. Such informa- studied at the edge of the solar disc during tion about interplanetary X-rays is vital to an eclipse or by means of a coronagraph planning future, manned space jaunts. that creates an artificial eclipse. All of these A spectrometer to detect solar X-rays were profile shots giving only a fraction of in the 1-20 and 44-75 angstrom ranges. This the desired information. Now it is possible will lead to a new understanding of the solar to make pictures that include all of the co- corona. rona except the relatively small portions hid- A helium II and helium I monochro- den behind the solar disc. mator to monitor the total flux of helium II Much is being learned about the distribu- solar radiation at the 204 -angstrom level. tion of chemical elements and about tem- The instrument also samples hydrogen ra- perature patterns at various heights in the diation at the -1216 -angstrom level. Objec- sun's atmosphere. Such information is vital tive: to determine how changes in helium ra- to a full understanding of the origin and diation from the sun affect the earth's iono- evolution of stars like our sun. sphere. The data accumulated by the spectrohelio- A proton -electron telescope to measure graph is also revealing much new informa- the energy dependence and angular distribu- tion about solar flares-those tongues of lu- tion of electrons and protons in the magnetic minous gas that flick outward around sun field of the earth. spots. Solar flares are believed to be trig- A monitor to measure the X-ray input gered by explosions of electrons that begin to the earth's atmosphere in several spectral high in the corona and stream downward

114 RADIO-TV EXPERIMENTER

www.americanradiohistory.com toward the center of the sun. When flares the earth at speeds that may exceed 100 occur, clouds of protons and electrons shoot million miles per hour. Since the sun is only off the sun to fill interplanetary space with about 94 million miles from earth, any astro- potent radiation. naut wandering about in space had better Since each solar flare is accompanied by get home-or under cover-in less than an a burst of ultraviolet radiation, the Harvard hour after the flare erupts! Unless the flare spectroheliograph is ideal for studying the is anticipated in advance, there isn't much development of the flares and for observing time to relay a warning to the hapless space temperature changes as the flares move wanderer. through the corona. The astronaut who leaves the earth's pro- Forecasting Flares. There is now tremen- tective atmosphere behind must look on the mendous practical value in predicting the sun as both friend and foe. He can never probable occurrence of solar flares. OSO -IV be quite certain just when the sun will sud- is not charged with this forecasting responsi- denly change into a sort of celestial Chinese bility, though data acquired by the orbiting Dragon whose fiery mouth will belch vast observatory will be of tremendous value in clouds oft lethal vapors into interplanetary perfecting present forecasting techniques. space. The actual day-by-day job of forecasting More Problems. Just after a flare erupts, solar flares is in the hands of a special de- the earth's atmosphere is bombarded by X- tachment of the Air Weather Service of the rays and ultraviolet radiation. These solar U.S. Air Force. A specially trained group products travel at the speed of light and of the 4th Wing-identified as Detachment can make the sun -to -earth trip in emit eight 7-works in collaboration with the staffs of minutes. These radiations heat the earth's several widely -scattered observatories to atmosphere and cause it to expand outward. watch for solar flares 24 hours a day, seven A satellite or space capsule orbiting around days a week. the earth along a carefully calculated course A complicated communications network will run into unexpectedly dense air and utilizing teletype circuits, military electronic slow down. This alters the craft's trajectory, circuits, civilian and military telephone and results in a rapid loss of altitude. Unless systems, and even the U.S. mail, has been the braking effect of the surging atmosphere set up to feed data to the central Solar Fore- is anticipated and offset by those handling cast Facility (SFF). There the information flight programming, an unhappy astronaut is collated, analyzed, and prepared into suit- may find himself coming down in able form for four routine daily forecasts Valley instead of making a cool splashdown and an additional once-a -week extended- in the Atlantic. period forecast. No radio ham needs to be told that when When there is reason to believe that de- sunspots appear and solar flares tongue the tectable quantities of sun -generated high- cosmos, radio communications get fouled up energy 'protons may reach the vicinity of badly because of the resulting magnetic earth, a special alert system goes into action. storms. To a ham, this is usually at most This Proton Event Start Time Forecast- an annoying inconvenience. But to others- bearing the appropriate acronym PESTF- especially the armed forces-disruption of is an alert program organized into a four- vital radio communications can be a very part, color -coded warning system. "serious matter indeed. Sunspots directly af- PESTF-Green means that proton events fect the ionosphere's ability to reflect signals. op- are not expected. Yellow indicates that Any advance warning about solar activi- tical radio indicators suggest that and/or ty that may affect radio communications is proton activity on the sun is a possibility. obviously of great significance. Moreover, Red means that a major flare has occurred the scientific data now being accumulated and that a related Type IV radio, burst (or may some day enable some other indicator) has been observed. about solar phenomena to devise wholly new Purple warns that a major flare has occurred, electronics engineers that will be unaf- and that there is sufficient information to communications systems state that a proton event is definitely ex- fected by magnetic storms and the like. pected to begin before a stated time. As we said, it has taken mankind a half Chinese Dragon. The streaming clouds of million years to get a really good look at the high-energy protons, electrons, and alpha sun. But it was worth the wait. The view particles created by solar flares race toward is fantastic!

AUGUST -SEPTEMBER, 1968 115

www.americanradiohistory.com ceiver's front end. You might try connecting a Ask Me Another 455 -kHz wave trap in series with the input to first transistor as shown- in diagram. You can Continued from page 40 use a 455 -kHz IF transformer. Adjust the active IF coil's slug until the interference is mini- cause of electrical noise introduced by the alter- mized. nator. How can I build a simple filter or power supply to eliminate the dry -cell battery and Miniature Invasion permit operation of the depth finder directly off In Robert M. Bròwn's book The Electronic the boat wiring system? ' Invasion, he mentions a device called a match -A. M. K., South Natick, Mass. box for connecting a tape recorder to the tele- phone at the phone terminal. He states that these devices simply amount to a line -matching device, often a simple transformer, and that most people build their own. What type of transformer is used for a recorder with a 2000 - ohm input? -D. S., Milwaukee, Wis.

PHONO JACK TO [ELEPH0NE D. 5pF U LINE (TO TAPE RECORDER)

PRIMARY .` -SECONDARY Connect ignition capacitors Cl, C2, C3, and C4 across the three AC outputs of the alternator You can use a UTC 0-25 transformer which and output of the depth finder as shown in the has a 600 -ohm primary and a 2000 -ohm second- diagram. You may also have to install ignition ary connected as shown in the diagram. Use a noise suppressors at the spark plug and ignition shielded cable from the phono jack to the tape coil. recorder. You should be able to get this trans- former at the Allied Radio branch in Milwau- kee. Remember it Ham and Beacon that is unlawful for you to record any telephone conversation unless you 1 recently bought a portable AM/FM/SW advise the persons whose voices you are re- receiver of fairly good quality. On AM and SW cording and also inject a beep tone periodically every station is heterodyned by a CW beacon. on the -line. I assume the beacon is operating around 455 kHz since it is received across the dial. Is there Now Look Here! a simple remedy such its the addition of another ,tuned circuit in the loop antenna? I don't have I note that you told L.J.H. of Chattanooga any test equipment and only limited parts from that he can't receive aviation stations on his FM other radios. receiver. My dear sir, aviation stations are FM! -Pfc. Salerno, Vietnam. I myself have taken a portable AM/FM re- ceiver, and by spreading apart the oscillator coil and adjusting the trimmer capacitors I received the aviation band loud and clear. -S. R. M., Chicago, Ill. You are wrong, friend. Aviation stations use BREAK AM. If you can hear them on your FM re- CIRCUIT ceiver, its detector is capable of demodulating HERE INPUT AM, and it is not a true FM receiver. TRANSISTOR Listening Low What's to hear on VLF, conversation or mostly code?

BREAK CIRCUIT HERE -S. V., Miami Beach, Fla. Mostly code and standard -frequency signals. It is possible that the interfering station is Just the right thing to tune in when you're very, close to you and is overloading the re- reading Playboy.

116 RADIO-TV EXPERIMENTER

www.americanradiohistory.com Zieo tace FOR BIGGER PROFITS! NEW CAREER OPPORTUNITIES! READ AND REPLY TO THESE CLASSIFIED ADS

Classified Ads 65e per word, each insertion, minimum 10 words, payable in advance. To be included in the next available issue of RADIO-TV EXPERIMENTER, copy must be in our New York Office by Aug. 10th. Address orders to C. D. Wilson, Manager, Classified Advertising, RADIO TV EXPERIMENTER, 505 Park Ave., New York, N. Y. 10022.

ADDITIONAL INCOME EDUCATION & INSTRUCTION PERSONAL PANELISTS At Home Wanted By New FCC License and Associate Degree cor- WHAT ARE GHOSTS? Write A Candle. York Researcher. Leading research Arm respondence/residence courses, School bul- Box 2325, Lehigh Valley, Penna. 18001. seeking people to furnish honest opinions letin free. Grantham Institute of Elec- MOTHER SHIP Of This by mail from home. Pays cash for ' all tronics, 1505 N. Western Ave., Hollywood, "JAPHALEIN, opinions rendered. Clients' products sup- California 90027. Galaxy"-the greatest story ever told plied at no cost. For information write: about UFO's! Limited edition. Order nowt Research, 669, Mineola, N. Y. 11501, Dept. EARN Your Degree In Electronics En- Send $5.95 to: Marcap Council, Dept. G. 612-RTV. gineering. Highly Effective Home Study Route 4, Arlington, Wash. 98223. Courses In Electronics Engineering Tech- Math- NUMBEROLOGY-Frank Analysis and AUTO PARTS & ACCESSORIES nology And Electronics Engineering Prediction by Richard Blackmore ematics. Free Literature. Cook's Institute Vaughan. $5.00. Send full original name Of Electronics Engineering, P. O. Box and birth date, 69 Fifth Ave., New York. AMAZING NEW WAY To Wax Your Houston, Texas 77036. (Established Car In Minutes, With Azo Glo Wash And 36185, New York 10003. Wax. Give your car real wax protection 1945.) with every washing. A full year's supply CATALOG of all Science & Mechanics RADIO & TELEVISIÓN of Azo Glo, enough for 32 washings $2.00. Craftprtnts. Send 258 to cover postage and Satisfaction guaranteed, or your money handling to Craftprint Div., Science & THOUSANDS AND THOUSANDS of refunded. Timchak, 424 Sussex Street, Mechanics, 505 Park AVe., New York 10022. types of electronic parts, tubes, transis- Paterson, N. J. 07503. tors, instruments, etc. Send for Free Cat- FARMS, ACREAGE & REAL ESTATE alog. Arcturus Electronics Corp., MRT. PROTECT YOUR FAMILY! Vpdate 502 -22nd Street, Union City, N. J. 07087. your car! Install side marker lights. Kit $19.95. Albe Company, Box 8301-C, CANADIAN NORTHWEST first hand CRYSTAL, TRANSISTOR, Tube kit Detroit, Mich. 48213. information write: Box 90, Dawson Creek. catalog-258, refundable. Laboratories, B. C. Travel, wilderness camping, Alaska 12041-H Sheridan, Garden Grove, Calif. Hlway, Land, Climate. Enclose $2.00 cover BOOKS & PERIODICALS 92840. mailing costs. INTEGRATED CIRCUIT POWER Am- BOOKS -Where to Retire or Vacation HYPNOTISM plifier Kit $5.95, Others. Lectronix, Box $2.00. America by car $2.50. Free catalog. 42, Madison Heights, Mich. 48071. A. Dodd Gifts, SM -768, 618 Gibson Circle. SELF -Hypnosis for self-improvement. 1,000 VOLTS FROM Table Radio! Plans Vienna, Va. 22180. New Concept. Free literature. Smith - $1.00. Interesting catalog of projects. McKinley, Box 3038, San Bernardino. plans, kits, 208. Franks Scientific Co.. NEW National Zip Code Directory With California 92404. P. O. Box 158, Martelle, Iowa 52305. Map. Speeds Mail. $1.00. Empire Publi- cations, Medford, N. J. 08055. INDIAN RELICS, GOODS & CRAFTS C.B. BUYERS' Guide -A new magazine HOW TO LIVE 100 504. for the buyers of Citizen's Band Electronic Healthy Years 3 ARROWHEADS PLUS BOOKLET. Equipment. The Social Side of C.B.: Herbs. The Fountain of Youth $1.00. Practical Guide to Hunting Indian Arti- Lund's Books, Monroeville, Ohio 44847. FCC Regulations. Send $1.25 -includes facts, $2.00, Indianfacts-D, Box 4217. Postage to C. B. Buyers' Guide, 505 Park Va. 26101. UFO's, ESP, Hypnotism, LSD, Speed Parkersburg, W. Ave., New York, N. Y. 10022. Learning, Memory, Occult, Mysteries. Latest Publications. Free Catalog. Rush INVENTIONS WANTED SCIENCE EXPERIMENTS request to: David Aubrey, Middletown. WE either sell your invention or pay New Jersey 07748. cash bonus. Write for details. Universal "ESP" TEST KIT! Fully scientific! PERPETUAL MOTION JOURNAL. Inventions, 298-5, Marion, Ohio 43302. Fun! Inexpensive! Free details. Leathers. Sample 258. UFO's Power Studies. 1616-T Box 232, South Haven, Mich. 49090. Compton, St. Louis, Mo. 63104. MISCELLANEOUS START YOUR OWN BUSINESS BUSINESS OPPORTUNITIES ENDS WAXING FOREVER: High gloss finish on -linoleum, tile, wood -all sur- BIG PROFITS IN becoming a supplier faces, including automobiles; long lasting. to Major Industry through electroplating I MADE $40,000.00 a year by Mailorder! Literature from R. Aumueller, 1608 Allen small parts and metalizing non-metallics. Helped others make money! Start with Way, Manasquan, N. J. 08736. Room $10.00 -Free Proof! Torrey, Box 318-T, Write for free particulars: Mason, Ypsilanti, 48197. CM -105 -HO, 1512 Jarvis, Chicago, Ill. Michigan MONEYMAKING OPPORTUNITIES 60626. FOR Business Opportunities -read Sci- WANTED Name Collectors! $10.00 ence & Mechanics, 12 issues $4.00. Write Box TREASURE FINDERS -PROSPECTING Science & Mechanics, 505 Park Ave., Name! Universal -SM, 1300. Victoria. EQUIPMENT New York, N. Y. 10022. R. C., Canada. MAKE Your Classified Ad Pay. Aet TREASURE Hunters! Prospectors! Rel- EARTHWORMS "How To Write a Classified Ad That co's new instruments detect buried gold, Pulls." Includes certificate worth $2.00 silver, coins. Kits, assembled models. BIG Money Raising Fishworms and towards classified ad in S & M. Send $1.00 Transistorized. Weighs 3 pounds. $19.95 Crickets. Free literature. Carter Farm -O, to C. D. Wilson, Science & Mechanics, up. Free catalog. Relco-A30. Box 10839. Plains, Georgia 31780. 505 Park Ave., New York, N. Y. 10022. Houston, Texas '77018. For Greater Classified Profits why not try the new combination classified ad medium Your Classified ad will appear Ln SCIENCE & MECHANICS MAGAZINE as well as in a minimum of four other SCIENCE & MECHANICS PUBLICATIONS. Write now for information to C. D. Wilson, Manager, Classified Advertising, SCIENCE & MECHANICS, 505 Park Ave., New York, N. Y. 10022.

AUGUST -SEPTEMBER, 1968 117

www.americanradiohistory.com How to get into One of the hottest n7onoli-making fields in egevtronics tou:nly-T servici ng two way rati k,s!

'HE'S FLYING HIGH. Before he got his CIE training and FCC License, Ed Dulaney's only professional skill was as a com- mercial pilot engaged in crop dusting. Today he has his own two-way radio company, with seven full-time employees. "I am much better off financially, and really enjoy my work," he says. Read here how you can break into this profitable field.

is growing at the rate More than 5 million two-way transmitters have skyrocketed and the number still of 80,000 new transmitters per month. the demand for service men and field, system, and R&D engi- This wildfire boom presents a solid neers. Topnotch licensed experts can earn $12,000 a year gold opportunity for trained two-way radio service experts. Many of them are or more. You can be your own bogs, build your own com- earning $5,000 to $10,000 á year more than the average radio -TV repair man. pany. And you don't need a college education to break in. Why You'll Earn Top Pay

HOW WOULD YOU LIKE to start col- don't have a college education, is prob- One reason is that the United States lecting your share of the big ably in the field of two-way radio. - Government doesn't permit anyone to Money being made in electronics today? Two-way radio is booming. Today service two-way radio systems unless he To start earning $5 to $7 an hour.'.. there are more than five million two- is licensed by the Federal Communica- $200 to $300 a week ... $10,000 to way transmitters for police cars, fire de- tions Commission. And there simply $15,000 a year? partment vehicles, taxis, trucks, boats, aren't enough licensed electronics ex- Your best bet today, especially if you planes, etc. and Citizen's Band uses- perts to go around.

118 RADIO-TV EXPERIMENTER

www.americanradiohistory.com Another reason two-way radio men earn so much more than radio -TV serv- . ice men is that they arc needed more often and more desperately. A home eigieN.ifelisselt radio or television set may need repair ,IrEDEIV1LPC0III1131YICATIONSI10ILäI33ION only once every year or two, and there's no real emergency when it does. But igaigievetuanignemeibleeilfilkfflet two-way radio user must keep those FIRST C'I,ASS transmitters operating at all times, and must have their frequency modulation and plate power input checked at regu- lar intervals by licensed personnel to meet FCC requirements. This means that the available licensed experts can "write their own ticket- -vs hen it comes to earnings. Some work by the hour and usually charge at least 55.00 per hour, $7.50 on evenings and Sundays, plus travel expenses. A more t common arrangement is to he paid a monthly retainer fee by each customer. ï':.,rwi,;.,,.,..ir+...>,a....rl..,.,..,r,u.». Although rates vary widely, this fixed charge might he $20 a month for the dtoet.r- base station and $7.50 for each mobile station. A survey showed that one man NOT YA410 UNTIL swNEL kfD}y can easily maintain at least 100 stations, ...r. . averaging 15 base stations and 85 mo- biles. This would add up to at least THIS COULD BE YOUR "TICKET" TO A GOOD LIVING. You must have a Com- mercial FCC License to service two-way radios. Two out of three men who take the FCC S 12_,000 a year. exam flunk it ... but nine out of ten CIE graduates pass it the first time they try! Be Your Own Boss

'I here are other advantages loo. You can salaried job w it h one of the major warranty: you'll pass the FCC Exam become your own boss-work entirely manufacturers either in the plant or upon completion of your course or your by. yourself or gradually build your own out in the field. tuition will be refunded in full. Instead fully staffed service company. The first step-mastering the funda- Ed Dulaney is an outstanding exam- a workbench, of being chained to mentals of Electronics in your spare time ple of the success possible through CIE move machine, or desk all day, you'll and getting your FCC License-can he training. Before he studied with CIE, rub shoulders around, sec lots of action, easier than you think. Dulaney was a crop duster. Today he with important police and fire officials Cleveland Institute of Electronics has ow ns the Dulaney Communications and business executives who depend on been successfully teaching electronics Service, with seven people working for two-way radio for their daily operations. two- by mail for over thirty years. Right at him repairing and manufacturing You may even be tapped for a big job in time, you learn s% is equipment. Says Dulaney: "I found working for one of the two-way radio home, your spare by step. AUTO-rao- the CIE training thorough and the les- in field service, factory electronics step Our manufacturers by sons easy to understand. No question quality control, or laboratory research oRisisti''`a lessons and coaching make everything clear about it-the CIE course was the best in- and development. expert instructors and easy, es -en for men who thought vestment I ever made." How To Get Started they were "poor learners." You'll learn Find out more about how to get ahead How do you break into the ranks of the not only the fundamentals that apply to in all fields of electronics, including two- big -money earners in two-way radio? all electronics design and servicing, but way radio. Mail the hound -in postpaid This is probably the best way: also the specific procedures for install- reply card for two FREE hooks, "How ing, and maintaining 10 Get A Commercial FCC License" 1. Without quitting your present job, troubleshooting, and "How To Succeed In Electronics." learn enough about electronics fun- two-way mobile equipment. has been removed, just send its damentals to pass the Government If card Cet Your FCC License... your name and address on a postcard. FCC Exam and get your Commer- or Your Money Back! cial FCC license. By the time you've finished your CIE 2. Then get a job in a two-way radio course, you'll he able to pass the FCC ENROLL UNDER NEW G.I. BILL service shop and "learn the ropes" of License Exam with ease. Better than All CIE courses are available under the business. nine out of ten CIE -trained men pass the new G.I. Bill. If you served on 3. As soon as you've earned a reputa- the FCC Exam the first time they try, active duty since January 31, 1955, several OR are in service now, check box tion as an expert, there are even though two out of three non -CIE on reply card for G.I. Bill infor- ways you can go. You can move out n -en fail. This startling record of achieve- mation. and start signing up and servicing ment makes possible the famous CIE your own customers. You might be- come a franchised service represen- of a big manufacturer and then Cleveland Institute of Electronics tative 44114 start getting into two-way radio sales, CIE 1776 E. 17th St., Dept. EX -27, Cleveland. Ohio where one sales contract might net Study Council you $5,000. Or you may even he in- A Leader in Electronics Training...Since 1934. Accredited Member National Home qte vited to move up into a high -prestige

www.americanradiohistory.com Reg. U.S. BUILD 20 Pat. Off. CIRCUITS AT HOME with the New Improved $ 9 PROGRESSIVE RADIO "EDU-KIT"® A Practical Home Radio Course Now Includes * 12 RECEIVERS * No Knowledge of Radio Necessary * 3 TRANSMITTERS * No Additional Parts or Tools Needed * SQ. WAVE GENERATOR * SIGNAL TRACER * EXCELLENT BACKGROUND FOR TV AMPLIFIER * SCHOOL INQUIRIES Training Electronics Technicians Since 1946 * SIGNAL INJECTOR * INVITED * CODE OSCILLATOR * Sold In 79 Countries FREE EXTRAS YOU DON'T HAVE TO SPEND SET OF TOOLS HUNDREDS OF DOLLARS FOR A RADIO COURSE SOLDERING IRON The "Edu-Kit" otters you an outstanding PRACTICAL HOME RADIO rock -bottom price. Our Kit is designed to train Radio & Electronics COURSE at a ELECTRONICS 'TESTER use of the most modern methods home Technicians. making PLIERS practice of training. YOu will learn radio theory, construc- -CUTTERS trOn and servicing. THIS IS A COMPLETE RADIO COURSE IN EVERY DETAIL. VALUABLE DISCOUNT CARD You will learn how to build radios, using regular schematics; CERTIFICATE OF MERIT In a professional manner; how to service radios. how to wire and solden Punched You will work with the standard type of TESTER INSTRUCTION MANUAL metal chassis as well as the latest development Of Printed Circuit chassis. HIGH FIDELITY GUIDE QUIZZES You will learn the basic principles of radio. You will RF AF and construct, study and work with TELEVISION BOOK RADIO andaprr actice test equipment.will will TROUBLE -SHOOTING BOOK cplifiersode. using their Progressive Code rOscilator. You learnearnt and practice MEMBERSHIP trouble -shooting, using the Progressive Signal Tracer, Progressive Signal IN RADIO TV CLUB: gressive Dynamic Radio & Electronics Tester, Square Injector. Pro- CONSULTATION SERVICE FCC ig instructional material. Wave Generator and the accompany- AMATEUR LICENSE TRAINING You will receive traininfor the Novice, Technician and General Classes of F.C.C. Radio . PRINTED CIRCUITRY Amateur Licenses. You will build Receiver, Transmitter, Square Wave Generator, Code Oscillator, Signal Tracer and Signal Injector circuits, and learn how to operate them. You will receive an excellent background for television, Hi-Fi and Electronics. Absolutely no previous knowledg of radio orrequired. The "Edu-Kit" i s the product of any years f teaching SERVICING LESSONS and engineering eperience.experience.x The 'Edu-Kit" will provide you with a basic education in Electronics and Radio, worth many price you times the low You will learn trouble -shooting and pay. The Signal Tracer alone is worth more than the price of the kit. Servicing in a progressive manner. You will practice repairs on the sets that THE you construct. You will learn symptoms KIT FOR EVERYONE and causes of trouble In home, portable You do not need the slightest background ages and backgrounds have successfully and car radios. You will learn how to In radio or science. Whether you are Inter- used the 'Edu-Kit in more than 79 coun- use the professional Signal Tracer. the ested in Radio & Electronics because you tries of the world. The ' Edu-Kit" has been unique Signal Injector and the dynamic want an interesting hobby, a well paying Carefully designed, step by step. so that Radio & Electronics Tester. While You business or a job with a future, you will find you cannot make mistake. The Edu-Nit are learning in this practical way. you the 'Edu-Nit" a orth-while investment. allowsy a teach Yourself at your own will be able to do many a repair lob for Many thousands w of individuals of all rate. No instructor Is necessary. your friends and neighbors. and charge fees which will far exceed the price of the . Edu-Kit. Our Consultation Service will help you with any technical prob- PROGRESSIVE TEACHING

www.americanradiohistory.com