This sign tells you you're de.rling u'ith l relirble. conscientiousbr.rsinessmen. har.rcl-pickccl as the finest in the land. it aiso tells you you're buying the linest amateur equipment aveilable. DEPEND ON IT

ALABAMA tLLTNOtS NORTH CAROLINA - - FreckRadio & S!ppLyco Inc Birmingham- AckRadlo SUPPIY Co Chicago AmateurElectronic S!pply Ashevrlle - Wholesalers,lnc. HuntsviLle- ELecironlcwholesalers, Inc NewarkElectronics corporation WinstonSalem Electronic - N4obile- SpecialtyDistributing Co. Peorla KLausRadio & ElectricCompany oHlo Co. ALASKA INDIANA C eveland PloneerE eclronicSupply Fortl!ayne - BrownElectronics, Inc. Col!mbus UniversslServtce Anchorage- Y!kon RadioSupply, lnc lndianapolis- GtahamE ectronicsSulJply, Inc. Dayton- C!stomE ectroics lnc. -oledo pLI,or ARIZONA SouthBend - RadioDislributing co, lnc S" ( S-ppres In(. Phoerr^- So-tr*es'F lectrolic Devices towA OKLAHOMA T!cson- El iott Electronlcs,lnc CouncilBl!ffs - WorldRadlo Laboratorles, inc T! sa- Radrolnc - ARKANSAS Desllloines RadioTrade Supply C0 OREGON DeWitt- l\.4oory'sWholesale Radio Co. LOUISIANA Portlaid- Portand Radro S!PP Y Co. New0r eans- RadioParts. inc CALIFORNIA PENNSYLVANIA MARYLAND - Pa. Anah€im- HenryRadro, lnc. Ph ad€ipha Radiotlectr c SerliceCo. of Wheaton LjncleGeJrge s Redo HamS:a.k B!rllngame- AmradElectronlcs P ltsbr'gh CameradioComPanY D vLston.Eectron cs 0 strb!tofs n: ' LcngBeach - ScottRadlo SuPP Y, In.. Wyncot€ Ham B!ergef I osArgr,rs - HPnrYRadio Co. llc MASSACHUSETTS RHODE ISLAND i.r Rado Pfod!ctsSales, Inc. Boslon- DefilambroRadro Supp y Ln. ,l Pfovience W. H. EdwardsComPanY ll - ElmarE ectronics RadioShack CorP. oakland SOUTH DAKOTA I Rl!erside- MissionNam SuPP ies ReadinE- GrahamRadro 1nc :{ tlatertown BurghardtRadio S!pply SanD ego- westernRadio & TV SlpplyCo MICHIGAN Sar I a-. s.o - A-ad Silppy Inc AnnArbor - PurchaseRadio SUPPIY TENNESSEE t SanJose - QuementIndustrial Electronics Detrort- l/1.N. Dlify & Co. l\'lemphs - W. & W. DisiributingCompany Nashville- ElecttaDistributing Company COLORADO RadioSuPPIY & Engrneerrig - I - Xalamazoo \larrenRad o ComPanY TEXAS Denver BursteinApplebee Co of Coorado - .{ I\4!skegon tlectronc Distributorslnc. Abilene- HowardRadio ComPanY CONNECTICUT MINNESOTA CorpusChristi - ElectronicEquipment & - Hatryof Hartiord Hartlord Corky'sDivision, l\4inneapolis- Lew Bonn ComPaiY EngineeriigCo fl - DISTRICT OF COLUMBIA ElectronlcCenter, Inc Ddlla5 Amaleu'Fleclorrcs l1c .J - fulcNicolComPanY lnc G Washington- ElectronicWholesalers, Inc MISSOURI ELPaso Houston- B!sackerElectronic Equipment Co ' lnc er - HenryRadio comPanY \r FLORIDA But ElectronicEqulpment & EngineefingCo (ansasCity - B!rstelnApplebee Co - AmateurRadio Cenler, lnc Antonio- Radio& TelevisionParts Co. [.4iami - ter AsheRadio ComPanY San wholesaers lnc St Louis Wa Electronic WASHINGTON - Amate!r E ectronicSUPPIY NEW HAMPSHIRE 0r ando Lynnwood- Cascad€Electronlc S!pply - GriceElectronics lic Concord- EvansRadio Peisacola Seatle- Genea Ileclroricslnc KinkadeR3dio SuPPlY, Inc Tampa NEW JERSEY Spokane- NorthwestEleclronics, Inc. d - GEORGIA Springlield FederatedPutchaser, Inc. Taccma- C & G RadioELectlonics Co - tl Ai anta Ack RadloSilPPIY Co NEW YORK WEST VIRGINIA - Co.,Inc. SpeciaityDlstr buting Co lnc Albany Ft.0rang€ Radio Dlstributing Charleston- NlountainIlectronics Amsterdam- AdirondackRadio Supply HAWAII B!ffalo- GeneseeRadio & PartsCo. Inc. wrscoNsrN -- u I ectroircs - Honoluu Honolu Jamaica,Long lsland - H.ffisonRadio Corp Fondu Lac l"larrisRadio Corporation - SaiterlieldEiectronics, Inc 11 IDAHO NewYork - HarrisonRadio corp lVadison -v Ina lv lwaukee--- AmateurE ectronicSupply Bo\o - ooob."(oadro and n. HarreYRad o. { .1, 1l{) For fnrther irtf,rr'ma1ion, checli n!nll)cr arrl 1)age .t UnconditionalGuarantee is proof of the maker'sabsolute confidence in his product... and PR crystals have beenUNCONDITIONALLY GUARANTEED SINCE 1934. You're not taking-theslightest chance when you put PRs in your rig, for you'll have {e_f!n_es!radio frequency control that moneycan buy! pR crystalsaie madeto PERFORM. . . undergood conditionsand bad. They havethat extia measureof sta- lility_and dependabilityBUILT-IN, that guaranteesyears of outstandingperformance. Get PRs todav from vour iobber.

AMATEURTYPES AMATEURTYPES fundomenfol,PRType 2.2 Third0vertone, PR Type Z-9A Frequency Rongesin Kcs.:l75O Hermetically sealed;cali- to 2000(160M); 3,500 ro 4,000 (8OM); brated24.000 to 24.666and 7,000to 7,425 l4OMl; 25,000to 27,000Kc., i 3 8,000 ro 8,222 l2nli 8,334 ro Kc.; .050" pins. . Net 9,OOO(6trtl. $3.95 Rugged.Low drift, fundamen- 6 Meters,PR Type Z-9A tal oscillators. High activity Fifth overtone; for opera- and power output. Stands up ting directly in 6-meter under maximum crystal cur- band; hermeticallysealed; rents.stable, lon g-lasting; calibrated 50 to 54 Mc., :L l: 500 cycles.. , ...$2.95 Net 15 Kc.; .050" pins. (All Z-2 Crystalscalibrated ...... $4.95Net with a load of 32 mmfd.)

IypeZ-1, MARS ond fiP Official assignedfrequencies in PR-l00 Ironsistorized 0scillolor the range. Calibrated to .005Vo, 1600to 10000Kc. ..$3.45 Net With PR-100 IypeZXP you can check harmonics at Suitablefor converters,experi- 100 Kc. inter- mental etc. 'fypeSame holder dimen- vals through sionsas Z-2. I 600 to 12000 54 Mc. A pre- (Fund.) Kc., I 5 Kc. $3.45 Net cision oscil- 12001to 25000Kc. (3rd Over- lator, fully wired, ready to install. Includesa tone)i l0 Kc...... $4.45Net 7-64 Crystal.Power requirements:l2V DC W kI 14 Ma. Oscillator output connectsto re- IypeZ-6A, trequency Sfondord ceiver antenna,high side. Base is l-7/8 x 2-13/16inches. Negligible mounting space J To determine band required.Weighs 2 ounces.., . .. .$l2.9iNet edge. To keep VFO and receiverproperly calibrated, .050" pins. 100Kc.....$6.95Net

COMMERCIALCRYSTALS AVAILABLEFROM IOO KC. TO 70 MC. PRTCESON REQUEST. N RAOIO COM COUNCIL\CIL BtUFFS,BLUFFS. U.S,A.

For further information, check number 1, on page 110 Jonuory, 1964 o CQ o I rhink srrraltt.

Noone but Hallicrafters could shoehorn such sheer, unadulteratedtalk power into so beautifully compacta package as the new SR-160 Tri-band Transceiver.Why Hallicrafters alone? Eight productive,successful years 0f SSBand transceiver experience,leading to suchadvanced, exclusive techniquesasAALC (Amplified Automatic Level Control)providing up to 12db. of effective compression. . . RIT(Receiver Incremental Tuning) -f with 3 kc,for superior net and CW operation . . . anda superblydesigned crystal lattice filter whichmakes the most of thedesirable SSB transmissioncharacteristics. A built-in changeover relaypermits direct operation with the HT-45 or 0therlinear amplifier. Sensitivity is less than I pv for20 db. (yes,20) S f N/Nratio. Thereceiver employs a separate AVC amplifier providinga figure 0f meritof 100db. Theseand a dozenother outstanding features make the new SR-160your best transceiver buy. Write for completespecifications orsee your Hallicrafters distributortoday. leJl S,noll sire: 13,r* 6t/,,, x II,, Small uteigbt: Only l3r/4 lb. Small price: #319.50less potuer sapplies and mobile mounting kit, l{Et|il$R-100 Tri-bandSSB/CW Transceiver ,,haftcraflers Fifth& KostnerAves, Chicago,lll. 60624

Export: Hallicrafters International Div. Ganada: Gould Sales Co., Montreal, p.e. For further infolmation, check number 2, on page 110 Vol. 20, No. I Jonuary 1964

EDTToR A. S. TROSSMAN, W2DTJ The SB-8; A Filter-Type Sideband MANAGING EDIToR Adapter ....Hartland B. WBVVD RICHARD A. ROSS. K2MGA Smith, 24 TEcHNIcAL EDIToR Cp Reviews: The Lafayette Model HE-73 Precon ...... 31 IRVING TEPPER TECHNIcAL DIREcToR SquelchStabilization ...... RonaldL. Ives 33 W. M. SCHERER, W2AEF Rheem ASSISTANTEDIToR CalifoneAR-300 Tape Recorder...... -..... 35 ROBERT M. BROWN, K2ZSQ An RTTY Audio CoNrnreutrNc EDrroRS Oscillator ..Byron H. Kretzman, W2ITP 36 CoNTEsr CALENDAR CQ Reviews: The Comtran Audio FRANK ANZALONE. WlWY C-II Compression NovrcE Amplifier 3B WALT BURDINE, WsZCV A Four Band Trap Tuned usA-cA Cusr0DrAN CLIF EVANS, K6BX Antenna ...... 4.D. Sinning,WLUYS 39 PRoPAGATIoN Voyage to SPACECoMMUNIcATIoNS Agalega IVQSBFA GEORGE JACOBS, W3ASK ...... V.C. Harvey-Brain, VQ9HB 40 UHF RoUNDUP Amateur Radio and the 1963 ITU Space ALLEN KATZ, K2UYH RTTY Communication Conference....GeorQeJ acobs, W 3 ASK 43 BYRON KRETZMAN, W2JTP A S1,000,000High-Speed QSL DX Printer ...... ,...... Aloysius Polaneczky, W 3EFY 46 URB LE JEUNE, W2DEC J. YL The CoaxialLine Balun...... C|if{Gilbert, K6GAX 49 LOUTSA B. SANDO. WsRZJ HAM CLrNrc A Wideband Filter for the c. J. SCHAUERS, W4VZO/HB9 75 A-4 ...... Wallace T. T hompson,K 8BY T 50 BusrnBssSrerr A Plug-In Multi-Crystal PUBLISHER Adapter ...... David T. Geiser,WA2ANU 51 s. R. cowAN ADVERTISINGREPRESENTATIVES 15 Meter Coils For The JACK SCHNEIDER, WA2FPE HRO-60 .GeorQe Hrischenko, VE3DGX 52 DICK COWAN, WA2LRO CrRcuLATroN MANAGER The Superex Model AP-S Headphones 53 HAL WEISNER, WA2OBR PRoDUcTIoN MANACER New Amateur Products 54 CARY L, COWAN 100 Kc Transistorized Oscillator ART DIRECToR Universal Auto Ignition Shielding Kit MICHAEL A. DOMINGUEZ Pocket Type Contact Burnisher Orrrcrs Finger-Tip Wrenches 3O0 West 43rd Street New York, N. Y. 10036 The VHF Amateur 77 Telephone, 212 JUdson 2-4460 Using Surpius VHF and UHF CO-(Titl€ registered U. S. Post Reflectometers ...... Leroy M ay, W 5AJ G I AF 5AF G 78 OIIice) is published monthly by Cowan Publishing Corp. Second class postage paid at New York City and Garden City, New York. SubscriptionPrices; U.S.A.. Can- adr and Mexico, one year, $5.00; rwo years. $9.00: three years, Announcefrenls QSL Conlesl S1.1.01). Pan-American rDd lorcign Contest Calendat RTTY . add one dollar per year. Entire DX .. .. Space Communications 64 c()ntentscopyright 1964 by Cowan Publishing Corp. CO does not as- Ham Clinic .. . USA.CA 66 sume responsibilitylor unsolicited Letlers ...... UHF Roundup ...... a2 nlJnu\eripls. Plearc rllow six Novice ...... VHF Report 80 \reeks for clrange of address. Pritrted in the United Strtes 0t Propagation...... YL la Amerlct. 7

Januory, I 964 cQr3 A0c-ffi STIIGt'E

-:ii: STDEBAlID !:'r:! FIT.TERS

O 9 mc center frequency O Bandpass6 db 3 kc (approximate)

ACF-2 Two-crystalfitter cjrcuit using low impedance link input and 2K resistive output load. Unwanted sideband rejection greater than 30 db. Mounting space It/z',. $9.95

ACF-4 Four-crystalfilter circuit using nominal 600 ;- ohm input and output. Unwanted sideband rejection / Ereater than 40 db. Mounting space Z',. glS.95

ACF-6 Six-crystalfilter circuit using nominal 600 ohm input and output. Unwanted sldebandreiection greater than 55 db, Mounting space 3,,. $27.9s

MATCHING OSCILLATORCRYSTALS for the ACF Jilterseries. Recommended for use in OS-4oscillator. cY-6-9LO $4.40 cY-6-9H| $4.40

OS-4 Crystal Oscillator 96.95

SE-6F Mounting Case Special AOC case for mounting filter plates. Contains case hardware and input- output terminals. $5,50

* Add-On-Circuit

International Crystal Mfg. Co., Inc. 18 North Lee, Oklahoma City, Oklahoma Please rush 1964 catalog.

City_==.-Zone-State

For further information, check number 4, on 4oCQ o Jqnuory, 1964 t dEsfi$Iiffi 61ll6r66ii6iit*lt F ,1 I E'PcoMMUNrcATroN ANTENNA SYSTEMS _MCONCERI/FIED PERFORMANCE/

Cal. No.2OO-5O9 Eleclrioal Spectf lcations : Frequency Range Nominal input impedance .. .. ,.,50ohm3 vswR...... 1.5:l t3('-t74 MG+ Bandwidth ...... 10.3% Maximumpower input .,..,... .,.soowatir Cat. No. 200-509 Station- Internal teedline . ,. , ,, .RG{^7U master Collinear Gain Antenna Flexible terminal extension . . .18" of nG{^,/U Termination...... TypG N malg wlth NaoptGns hou3lng is designed to meet the ever in- oftnidirectionargain ...... creasingneed for high antenna l,f,lll ilS3:3 jB gain in minimum spaceand at Vsrticalbeam width (y2power points)...... ,,,..18o - Lightning protection lowest cost. This antenna,con- .Dlrsc-tgrcund sisting of a number of collinear Mechanlaal Speclflaailons: l radiating elementsfed inphase Radiatingelement material . .. ,....Coppcr Element and encapsulatedin a continu- housing material . .. .,,Flbrrglass Efementhousing tip diametor . ,.. . , .. .. .qh" ous weatherproof fiberglass Elementhousing butt diameter .. ., .. ...11h" housing, meets the above re- Elementhousinglength.,, ...... ,,19, quirements.Low overallweight Groundplane element length .,...... 18" Support pipe ...... 2rh" dia. hot-ralv.nlzed eliminates the need for exten- stosl, 22" avrilablo toamouniln8 sive erection equipment re- Ratedwindvelocity.,. ....,,...,10olrpH quired by previous antennas Lateralthrust at rated wind ...... ,. ,,15lbt Bending moment 6" below offering equal power gain. The ground ptane at rated wind. , , ,,15oft. lbr. input fitting on these antennas weight...... 301br. is a standard Type N male con- nector mounted at the end of 140' r30 120'll0 100'90" 80' 70' 60' 50' 40' an 18" flexible terminal exten- sion, Designed for maximum strength with minimum cross- section, Cat. No. 200-509 is capable of withstanding winds in excessof 100 MPH.

'E aci frequencymust be sp€cifled

Vertical tietd strength palterl of Cat. No. 200-5OgStalionmastef Antenna. A dipole pattern is showntor reference. 224 214 240"250' 2ffi'210' 280'290" 300' 310' 320' ,;:.. f- "a: n ,-,. ? /1n 6t;r Otttt'twlttd:aVinfnMilA Uflr4alq ffi t#p^L^""-Fooden nincrnorrrr" "*Jo.r"f. W ^"f#Jiil#i^ff'IVIARLBORO.NEW JERSEY- TelephoneHOpkins 2-1880 (Area Code 201) LOS ANGELES 65, CALIF.- TelephoneCHapman 5.1143 (Area Code 213)

i

Jonuory, 1964 o CQ . 5 Pleosesend me FREE of chorgeyour brochure(form no. SM_2-6) on the 2 ond6 meferbeoms.

Nome...... r..... Address...... o City,/Store ffo./tg Ll or t r- -tr-^ -/^-. 4610 N. Lindbergh Blvd., Bridgeron, Mo. 63044

For further information, check number 6, on page 11Q Ne of the cherishedtraditions of Amateur Radio Wc urc ittdcblcd to I{crhcrt IItxtrcr, is the Opcn Forurn which takesplace at our con- .1r..W62H. Prcsidutr ol A IIRL. lor vcntions.Here we discussOur problemsin open pertttittirtg u,r to rcfrittl lri.t rc

Jonuory, 1964 o CQ o 7 Zero Biqs ffrom page 7l broadcasttheir virtues, philosophiesand aspira- tions to the rest of the world. They feel a myriad led by Hiram Percy Maxim, Amateur Radio was of listenersare eager to hear their story if only p recognizedfor the first time as a full-fledged a clearchannel could be obtained.Unfortunately, ; TelecommunicationsService. This was despite all the channelsassigned to broadcastingat the vigorous opposition by many other countries 1959 Conferenceare already overcrowded,and who wished to give Amateur Radio no recog- they must squeezethemselves into some other h nition whatever, or at best, to class it as an part of the spectrum-at least, they hope, until experimental hobby. The view of the United the next Conferencelearranges the allocationsto [, Stateswas that amateurshad performed in the their satisfaction. "public interest, convenience and necessity"; The desire for more broadcastchannels falls r they were competent in their operations, and primarily in the band from 7 to 22 mc. In this i their technical contributions were of such far- band.these countries also want more commercial b reaching significancethat they were justified in frequenciesto keep in touch with the world cen- I "Service." being formally designatedas a ters of diplomacy and commerce. I This does not in itself guaranteeus any fre- They also have an internal communications quency allocations. We will have to fight for problem. Being sparsely settled, telephone and I them in the future just as hard as we have in telegraphby land wire seeminordinately expen- the pas!-and probably a lot harder. But it does sive, and radio links in the 3 to 7 mc part of the make the job easierbecause we havea recognized spectrum appear most inviting. Again, if these status, channels are occupied-as they usually are- In subsequentconferences, the United States then they move into the first vacant spot to be continued to maintain its support of the Ama- found. teur Service,and, in each instance,it has been A number of such stationshave moved in on joined by enough other countries-Canada in us already.What is not fully realized,at leastby particular-to constitute a majority. However, most amateurs,is that there will again be a con- therehave beenrepeated proposals which, if they certed move to take over most-if not all-of had prevailed, would have severelyreduced or our amateur bands.And let us not delude our- eliminated our amateur bands. As we shall see, selves,there are the votes available this time to the latter attitudewill probably be much stronger make it extremely difficult. in the future than heretofore. When the next Conferencetakes place, there At the next Conference,which may well take is .little we can do directly, as amateurs.These place within three to five years. there are ex- conferencesare betweengovernments, and, while pectedto be more than 100 nationsparticipating. the Leagueand the IARU will have representa- and eachwill have an equal vote. Approximately tives present. we are only a small part of the thirty countrieshave come into being as brand- over-allpicture. new nations since the last Conferencein 1959, The final outcome will be determinedby two and this will be the first such affair they have things, namely ( I ) the attitude of the smaller attended.Most of them are among the rapidly countries,whose votes will be decisive,and who developingcountries of Africa. feel they are in desperateneed of more spacein There are thirty or forty additional nations the spectrum;and (2) how vigorouslyour own which, although older, also have little or no Government-and thoseof other countrieswhere amateur activity. It is significant that many of substantialamateur activity has been supported the proposalsto curtail amateuractivities in past -will defend our frequency allocations. conferenceshave been originated by this group. The attitude of the newer and smaller coun- All of the nations,in both of thesegroups, have tries will be largely determinedby their own self- radio and communicationsproblems which they interest.They will not be impressedso much by feel are far more pressing than providing for the historic achievementsof amateurradio in the an amateur service.It requiresonly simple arith- past as by what it can do for them in the future. metic to realizethat the sum of thesetwo groups It will help us in anticipating their reaction if add up to substantiallymore than a majority of we ask ourselvessome straightforward questions. the whole. Are we, for instance,in the daily use of our fre- The next Conference, when it occurs, will quencies,creating the kind of image we would again be concernedprimarily with the High Fre- like these governmentsto have about amateur quency portion of the spectrum-from 3 to 30 radio? Are we demonstratingour full capability mc. This is the area where the most difficult to servethe public interest?Are we trying to im- interferenceproblems must be resolved,and it prove our technical competenceand keep pace is here. too. where our most valuable amateur with the progressin communicationsgenerally? bands are located. Does amateur radio have a seriousside to it, or The pressurefor more high frequency chan- is it primarily a hobby for entertainment?The nels is far greater than ever before. Almost all answersto thesequestions and to many more like of the newer nations-and many of the older them will largely determine what happens to ones,too-feel they have a vital need for more amateurradio in the immediateyears ahead. short-wavebroadcasting. They have great pride There are seriousand well-qualifiedamateu.rs in their new-found sovereigntyand they want to in our government,and in vantagepoints outside,

8 o CQ o Jonuory, 1964 lr_ tn NOW aoaooaaaooa\Natch the 'CLIFF.DWELLER'

Theonly 40 and 80 Meter, Remote Tuneable, Rotatable Antenna that is Flat Across lre Band

For further information, check number 9, on page 110 JonuorY,1964 o CQ . 9 ivhrl ulc pessiruisticaltottt thc otrtcrlnrcif tltc !rrefentantafellr trends continrre,They believc ff fhere is a good possibilityr"e will lose all or a good part of our most usefrtlhand-s. and fttrlher sharinguith thc hrgh-nouerhroadcasling and commercialservices. of thoscpalts which nright , *'s%t renrain,will severelyreduce their ellectiveness. I aam G"1 The full impact of this situationhas become increasinglyapparent within the last year. The outcome will depend largely upon what we, as iM, amateurs,can accomplishin getting our own housein order beforethe nextconference begins ;Y'f,f to shapeup. Whetherwe like it or not, the restof the world looks to us to set the standardsfor amateur ApP operation everywhere.This would be true by sheerweight of numbers,if for no other reason, for we have250.000 licensees out of the 350,000 world-wide.But in addition.as a result of our high power and big antennas,we put propor- tionatelymore loud signalsinto the ether than even these numbers nright indicate.It places upon us a responsibilityfor performancewe can- not escape;and whetherit be a foreign amateur' who is looking toward us for guidance,or a for- eigngovernment looking at our frequencieswith envy. it is the United s'lalesAmateurs who must setthe exampleand providethe leadership.This is a soberingreflection. and the only conclusion is that in the yearsimn-rediately ahead we must do our utmost to genuinelyup-grade the Ama- teur Service. This conclusionis also re-inforcedif we look at the domesticside of the picture.for if we are to be successftrlat the next Conferencewe must havethe activeand wholeheartedstlpport of our own Governmentalagencies. Amateurshave a prottdrecord of makingfar- reaching and substantial contribr-rtionsto the technicalprogress of radio.We haveprovided an indispensablesource of skilledpersonnel in times of nationalemergency. and our activitiesin local disastershave beenan invaluablepLtblic service. There are nrany additionalamatettt' activities- more than it is possibleto mention here-that have also made very real contribtrtionsto the public welfare. -fhere is still anotheraspect of amateurradio -the hobby side-that gives a tremendous pleasure. and thrill to those amountof enjoynrent-l-here who activelyengage in it. is the oppor- tunityto talkwith old friends.as well as to nrake new ones.The challengeof working DX or of participatingin a contestappeals to many in ottr ranks. Then, too-and perhapsabove all the JAMESMI LLEN otheraspects of ham radio-is thecomrnon bond of interestthat lends sLlbstanceto the friend- shipsthat are formed within the fraternity. MFG.CO", lNC. All of us treasurethe pleasurableside of ama- pleas- MAIN OFFICEAND FACTORY tenr radio. But we must neverforget that ure and entertainmentare not the reasonwe MALDEN have our an]atellrbands today. There are other needfor MASSACI{USETTS importantservices that havea very real more channels.In our absorptionwith the man)" e.*5 interestingaspects of amateurradio, this is all page EMl { For further inlormation, check number 8, on 110 q^P @M thst resllt{ firl cln ggmoteu?os stockingt - - - N'@ F:

*K BobDrake...... W8CYE JimBrown...... W8tNl MiltSullivan .,. K8YD0 JimKittle ...... K8HY0 BillDrayer ...,..K8|MN ErnieGulden . ., . .K8JYP JimWaits ...... W8NU0 JohnHey WSSTB TomKennedy..,.KBTRK BobFugate . ,... .W8RGJ VicBlackwell ... .WBVSTBobBrandt . ,. . .WASCKE PiffSmith ...... W8NGUMikeWintzer.....DJ4GA GusNianouris ....W8FlR RodZiemer .... .W8DJH from the people JimMartin...... KBMSM PeteScarborough WSCWS who make the Demand for the TR-3 was Ereater than we expected, we've increased oroduction to meet the need, Sorry DRAKE 2.8 il you didn't get your TR-3 by Christmas. and TR-3 R. L. DRAKE COMPANY Miamisburg, Ohio

For further information, check nunber 11, on page 110 Jonuory,1964 r CQ r ll too easy to forget. ,,fun,, As a practical matter, the purely side of amateur radio-the so-calledhoiUy siAe_is Communications,mobile one of the extra dividendsthat comesaiong from radio...having done a creditablejob on the -o." .".ilou, side. There are such a wide variety of construc_ tive activities available that it is tft.n fruiO t A Finst tell Clasis where the seriousstufi leavesoff and the fun l.glp..fnir is somerhingeach individual has to oecloe FCC LicGlnsc! ln hrsown conscience.But the seriousside cannot be left for somebody else to do if we :..CtF Youf Money Elack expectto keep our ham bands indefinitelv. ! A . -good example is the Citizens Band, which has ,been giving our regulatory authorjtiesso much concernof late. lt was originally intended for a multiplicity of businessand personalcom- municat.ions,but it has beengradually taken over by literally thousandsof individuals who founcl that chatting over the air could b..o-. u rno.i engrossinghobby. Interferencefrom this source t*g has becomeso great that the original purposes were lost, and the FCC is now consiiering a drasticrevision of the assignments.There is an undeniablemoral in this for Amateur Radio. .? A high FCC official.once an activeamateur himself.said in a puhlicspeech recently "had rhatthe j LrtrzensBand all the badfeatures of ama_ '"' teur radio and none of the good ones."This is I worth seriousreflection. especially considering the sourcefrom which it contes. t In view of all thesecircumstances. it is useful i"u; to consideragain just why we have our present frequencies.The to future successin electronics is a First-Class amateurbands were made avail_ Yqtg_kgY able FCC License. It will permit you to operate and maintain to us instead of to other essentialservices transmitting equipment used in aviition, broadcastine. becauseit was believed to be in the over_all marine, microwave, mobile communications, or Cil,izenS- natjonal interest.The purposewas to Dano. ulevetand createa lnstitute home studv is the ideal wav body of technicallycompetent to get your FCC License. and experienced Here's whv: operators:who would Our. training p-rograms w:.Jl quicily prepare you advancewith ihe radio for art and, whereverpossible, a First-Class Commercial Radio Teiephorr" Li""rr* make substantialcon_ with a Radar Endorsement. Shoujd you fait to pass tributions to its continued progress; and who the FCC examination after conpletine ,ror. "o*.;- would be active in promoting the public welfare. you will get a refund you full of all tuition payments. Thesedefinitions occur all through the legal jus- get an FCC License. . , or your money back! __ tification for our domestic existence.In Y-ou owe it to youself, your iamiJy. your fulure to t-urn, it ..proven eet is basically the complete details on our effective" on these grounds that our Govern_ Cleie_ mental land Institute home study. Just send the coupon below agenciesare able to support us at the IODAY. There's no obligatron. international level. During the annual meeting,the directors con_ sideredboth the international and the domestic Cleveland Institute of Electronics situationsat length.It was recognizedthat unless 17?6E. tTrbst., Depr.r.rr ,l vigorousmeasures Cleveland were takenthere was a gravc 14. Obio Howto succEJ possibilitywe might losea substantialpart o1our Plea* *nd FREE rn Career ]rforma- Electronics high frequencybands at the next tion prepared ro halp me get ahea.t in iniernational Eletronics, wirhourfurrherobj isrrn)n. confelence.Furthermore, the Board concluded CHECK AREA OF MOST this was not a matterthat could be counteracted INTDREST - by strenuousarguments alone. Such arguments E Electronics Technolosy n First-Class FCC Licens would have-tobe accompaniedby a genuineup_ Indusrrial Electronrcs E fl Electronic Communications grading of the amateur Broadcast serviceitself if the futu;e E Enginering - -=----;;;_- could be faced with any degreeof confidence. It was also recognizedthat there was no single solution to the problem, and that any chanles which might be recommendedin licensingpio_ cedureswould be only one aspectof a broad program.r icrri lt was emphasized L____*"_.:dj:*_y"_1b_.:I:I:",' Home srudy councir i _ that suchthings as crowded band conditions, poor operating and technical

12 o CQ o Jonuory, 1964 VALIANT ll-Outstanding flexibilitvand performance- band-switching160 through1O meters-delivers 275 watts input 200 cw or ssB (withluxiliarySS-B exciter or VikingSSB adapter) and Ir VFo watisRwI Lowlevel audio cliiping-differentially temperature compensated circuit- proviJ"sst"Uif ity necessaryfor 554 operationlHigh efficiency.pi-network tank internalmodification' finaltank coilsitver-ptaieJ, FiouLion for plug-in-cat.SSB operation,with no wired'tested ' ' ' Net $495'00 car. No.240-lo5-1 Xit... netsi/s.oo xo' i+o'tos'z

\'ALIANT II SSB ADAPTER

lf you,like many of today'samateurs, find yourself withyour interest fairly equally divided between workingAM/CW and SSB, there's a realfeeling of frustrationwith most available equipment. Why? Becausemost AM rigsrequire extensive modification to operateSSB-and no SSB rig offers high level AM andClass "C" CW-andthe endresult is compromisein onemode or the other! Notso witheither Viking SSB Adapter/Valiant or SSBAdapter/Valiant ll combinations! Now, keep yourcontacts and work old friends no matterwhat portionof the bandthey operate in, and no matter whatmode theY use!

VALIANTOWNERS-You can makethe conversion t"'S#""per"tion witha fewsimple modifications and the Viking"Valiant" SSB Conversion Kit'

ComPlete Catalog E.F. JOHNsON IIIMPANY giving Send for Amateur catalog 962 U.S.A. detailed information on our complete WASECA,MI N NESOTA, line of amateur transmitters and accessories' @ 18, on page 110 For further information, check number

JcnuorY, 1964 o CQ o 13 proecdurci and lack of courLesycoulcl not Lre urrredhy stiflerlir;cns;ne lcqrriremcnts or. ;n mort lnstancci,by governmentalmonitoring. T hc only recoursefor thcse ills would haui to come TURNER'S through voluntary N"* the actionof amateurs 'fhe t.hcm- selvc.s. 454 Series Microphones he:rdquartcrsstaff. inclucling thc com- municarions.technical and editoriaI def,artments, rvelcinstructcd to do everythingpossibtc to pub- licizc and irnplementthe program. Its sucicss would clependupon educationthrough eST anrJ othcl publications-borh insideand-ouiside the Lcagtrc-hy thc ctropcration.,f corrncilsanJ $Idfl,g clubr. anri by the on-the_airconduct and d.iolo_ nracyof conscientiousand responsibleamateurs Not just streamlined, e"erywherc. It was fully recognizedthat the volunlary aspectof the programwas at oncethe nrostlntportant and yet perhapsthe mostdifficult ...ITAfurLrNEI'I to lt)lplement. In Here'sthe mike that was speciallydesigned . arriving at its t.econtntendationsfor changes for in licensing procedures. hams, by hams. lt has all the featuresa it was believed u nloOir_ ate increa\e in licenring requirements .nam wants and then some! Both modelsin would achieve a necessarv upgrading the series.. .454X (crystal)and (ceram- of our level oi 454C technical competence. ic) , . . featurereal ,,ham There was no rntention or pleasers"like press. desire to take anlthing away.from unyUoAy, no, to-talkor VOX operation;durable satin black was there an1,idea that onl) aclvancedelectionics case;and a threeconductor (one shielded). speciaiists 11 should be able to qualit1,.On the con_ inch retracted,five foot trary, extended,n"oor.n" an examination iras envisioned which jacketedcoiled cord, could be passed Write today for details bi, alnrost an1.amateur who had on these had completelyhamlined microphones. a lcar of mor.eacrirc erperienceas a Gen- eral or Conditional licensee and who would be willing to apply himself to a reasonable amount of study of the marerial rhar was ..adilt ;;;ii_ able in the amateur handbooks. Tne proposal specifically recommended that no additional code test over and above that already included in the General Class license should be required, and there should be ample time to take an examina- tion - after it became available and before its use would SPECIFICATIONS be necessary. It was not the purpose Response:300.3000 cps. to correct overcrowded band 0utputlevel: conditions by restricting operation to a se- lected 454X:_48 db. _qroup.On the contrary. it was believetl the 454C:_52 usefrrl db. TuliTynl occrrpancyof otrr bands was de:trable Netprice$15.9O rn or.derlo demonstfatethe necessitVof 0ur presentallocations. The Executive Committee and the officers were directed to work out the details of the licensing recomnrendationswithin the frame_ work of the broad policieswhich had beenlaicl down. This is now beingdone and it is expectecl specificproposals will be made early this fall, after further consullationwith the Aiie.to., hos taken place. It was realizeclthat an over-allprogram with the ramificationsoutlined here coulclnot be pLit into effectover night. Its successcould onlv be measuredin termsof years.Nevertheless, it was felt_time MICR(IPH(lIIEC(IMPAI{Y was running out and a start shouldbe 925 17th SrreerN.E. inade in-rmediately. CedorRopids, lowo It was alsorealized there woul

ifi H TECHNICALDATA lmpedance:560 Ohms in and out Unwanted Side Band Rejec' tion; Greaterthan 40db PassbandRiPPle: -r- .Sdb Shapefactor: 6 to 20db 1.21to I Shapefactor: 6 to 50db 1.56to I PackageSize:1%" xl%" x t" Price: $32,95 Each

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side band tats either upper or lower. the GoldenGuardian and the Sil' Balanced Both Mccov ;;;r;;; m-iy be selected J#'iiiliinii iontain a precision will be supplied upon the famousM'l McCov HJriuto, cirduit iiii"iino t*o ot reouest. irs'ilrri[ot Ctvstals.Bv switching crvs'

rl

number 15' on page 110 For fulther information, check neriT Allen hex sereurdriverls EDITOR ie6,,.', wbn'tlgo'

Tools Editor, CO ,"#{fiillf 1..",?:,,fnu",i.T,jiiil11,t,T:J:.';:i.:,,J; firedhandle ::".,:",{i,:"i'.'":*:!iil.:liT#.:,i:,rllm,*Fx:presstve when SCREWDftIVITS. compared witl 11hex sizes: ,',1kjl""Tg['mT:i:n:nil:;'.'.',ff.'Jf;il:l'l; .*l'o##*,0.: jfi alloysieel blades lliJi.l,J3|",l.,i;t,,,J;:liii:rl1{:airnh:1",.::l#*,.j:1,:,:*#:;i " broken driu 0". i"i,.',j"i"' Shockproof, breakproof, amberplastic (UL)handles !i"irir:'$.";;J^ Ediror, COr detacha$leBLIOES Thjs just is a brief note r( I hexsizes: :;;;,1'***::'n".1';'1'"1';-'"'Jl:'i':;[i"J;ff:.'l; r,{!it#qls*,i.". w-irrprove or greatvarue tiandles '" ln: ?;:,:':';'L.'Xi',I3::lil Availabtesincli; : 3F as a Setof six in gq'g;:i:$.,;; i:'r#;1 I'lr{} .ye,J,r',,e freeplastic pouch * or in rollftlt ,..iiii i;.['ll",i,,r,l;s..,r. withhandle l 5i park place New york ?, N. y. Ed_itor,Ce;

*""iTl#1:,.'li'J"il',i:,"IK:J:"iJ.",.,i::":i.,,.#"1'.",,. out :::i',:J;.ili l::,,1:: ,riri-r.u,n-Ji; ;;;; The authorhas had the . "lt ex( when' on pase s7 ,,1:$hr:;]";:.*1;Tt":il?il:;illT:',:,.0u",:,,",he savs. It"lo.i ]r,"r,." ;?io^'l:l:: WRITEFOR BULTETIT{ I{7f3 Bill Hadley, K3SGA l0g Sixth Ayenue Collegeville. penna.

Hcrm Editor, Clinic t Co "' ua ppre cia r ion ", il','lil,Xu8Ji*::'J!;ili;.Ti"#'!? I _KgCPT "ttil5ll,ry.l,,;,t,; Editor, Ce: like to seeHAM cLINIc ?iffil,,$i:Tiil,lj'A;f* ""1#::11 not onlv conrinuedbut For further information, check _W7IFD number 16, on page 110 t6 . Ce r Jqnuqry, 1964 ,,HOW-TO -BIJILD''DATA RadioHandbook I6THEI}ITIllN

' New amplifierdesigns . New transmitterdesigns ' New receiversand transceivers provides Gives.exte-nsive,simplified theory.- the latest design and con- struction data on a wide range of advancedradio "How-To-Build" amateuiequipment,^tnu attractively styled. Broadest coverage in nutal completely revised and up to date. clearly inclexecl.soB pue"., all texl, rvith hard covers. $ 9.5 0 ; r, "i,kIiiiur,,tor$oreian g,o.so)

CON\IERT SURPLUS RADIO GEAR INTO A]\{ATEUR & RADIOTELEPHONE C.B. EQUIPMENT LICENSE MANUAL A wealth of conversion data in 3 volumes show3 you how. AF I'FX UC.tC ffib (foreign 96.25) Itetns coteretl are listed belou, Helps you prepare for all U.S.A. commercial yotumc!- radiotelephone operator's license exams. pro- IURPLUSRADIo CONVERSToN tttANUAtS-3 vr(tescomplete $3,00ca. (lorcign, 93.50) study.guide questions and answers in.a single volume. Helps you understand every H;tifE.lr,rt_tl.'r?.1t*:itIi";:.,t,o.',lfr "*:ll;;B8.lli sub,ect needed to obtain an operator,s licens6. Xmtr.,/ffcvr.;_ BC.-946Rcvr. ; SCR-274teC.a-S'3i Serlrj

f,?ii,l:l+3'ii:Jt:illn,i;iis.il,'#"[31,66ii Er.ry^Electronic Tubo in the - I0684/ffIi'-'f I I 6 lA Rcvr. ; Eleckonics Surptus tnUixi biill'ii laei ir lvorld Llstcd 3 Vollmes AmateurFreq. nrimations; ea. (roreigng8.50) fil\lli;.]il"', reiiiisininj $8.00* 'ol'nl'l WORLD'SRADIO TUBES ; ??l [9 3'-T,:; :,lh'i:i f l ll'i*,;)fl,,,; 1 (Brans'..Radio-TubesVadeMecum). World's most comDlete co.g/T_8WXmtrs.; 8C.357 Maiker Rcvr.; ec Sa6B-ic;,il;i anoaurn0rrtatrve b00k of v.t. characteristics. Tuner; 8C.37_5_Xmtr.;Modet LM f"q. M,jto; fn.'i7d'i.nO'ii Book#471 [,xii,iiI WORTD'SEQUIVALENT TUBES i.ti*3!l*ii-li^.*i:i.i.LTi,,,,i.ltl,ii1tf(Brans' Equivalent Tubes Vade Mecum). Over ampt. : 5u rpriii eei ;n parisons 43,900com- ff"T.,I!"',fi;*I iu*'f i:"1: ol.fJ; Xl andreplacements. sdoi # ags j',i:l'i: IYORTD'STELEVISTON TUBES (Brils' ilill? StiXal%i: i!3,'iutll;il',BS: .TelevisionTubes Vade Mecum). Characteristics of a[ tv ptctureand cathode ray tubes. . . alsospecial purpose M^D^.7./ARC.5;i'"';ffiiJf ir,',i:;,:&],',','ilrutii,"l[;1.,'dj;;TF; electronictubes. gool .R.9/Aprr.q;n.zezAnc.s; s2a,-nM.S25i'm:il'l sit' i i s'tl, iqAZ ti:iii'[;1'lhi",iei:si'ihi:zl'i'sbisl,idliiBl''!,l.',1iri%Jf;Jc4l'/,1] a,lll',li'l 'Otd€. ffi f,am tour f.vo.iteelectronic p!rts distribqtor. tnec eIve rs a n d rransce ivers) - If Il:oo.33:H,:illlrrloj! he cannol supplg, send us his norre and rlour remitlancc, and. u.c u ill supplg.

Summerland 3, California 93067 Dralc.s: Electronicdistributors, order lrom us. uooistoras,ttbrarres, nlwsdealers order from grter & lrylor,-Hillsid€. N. J. Export(exc. Canada), order nbffffiu#finl-ffil.omH. M. Snyd.r Co., 440 ParkAve. So.. N.y. 16.

Jonuory, 1964 r CQ o l7 in---nfrXiPrf!, lir.i:fitiri ii:illliiiil:iiiiiiii!:;;l,iii::ll::iiir,:nilii:riiiiri:rliiriiiii:lllli:llilil:::li,::::i A Correclion

l )rtc l{) n lypr)praphjcal errt)r. (he ct)nlfrl rvrs G- .hansed ir a Lettel to l1re Flditol bv (ilBlD in the -Ar. /h. Novemhcr issuc, (p. ll). lhc lasl 6enleflcc of the "N4any (J.\) sec{!rrcl palagranh rhotrld rcad, of ()rrr grcal rrrcn ltad nrost rrrrdistirrguishcd acadanric careers."

Prolecl Your Equipment? ^r\a Editor, CQ: Dale and Morey (Noyember, CQ) suggest dogs as EE'EfuFE)? good burglar insurance. I suggest extreme caution to this approach! In the first ::,:ii:i:,.:::lr:ri::::::,t":i:KilldiAn.it WottNebraska, meaning primarily Lincoln and Omaha, just the fact of being loose lays the owner open ro a fine from 55 to Sl00-Nebraska Statutes 54-608. If a dog does damagc, or bites a meter reader, paper flvE-coRE SOTDER bo), milkman, or an)'one else on your property legiti- Drirtely or bites anyone ofl l"our property at all, you are open to claims for damages-Nebraska Statutes 54-601. ilHft;;**., If a loose clog does darnage oft tlre orvner's property, the owner is further liable to a fine of from the amount of the damage to twice the damage, over the liability to civil recovery-Nebraska Statutes 54-613. . . . This hardening of attitude toward dogs is nationwide, varying only in degree. It has it's roots in steadily rising numbers of complaints involving bites, property damage, loss of livestock, and general nuisances. Eugene Austin, WfiLZL 1334 N. 20th Street Lincoln, Nebraske The authorls expert knowledge of dogs comes from ma- terial prepared for an article in a local Lincoln news- paper --Editor.

License Fees Editor, CO: Concerning the impending application fees, it may be- come quite obvious that the notion of fees will be rather obnoxious to some of the brethren, and I would like to point out a few facts in the event some of them label tlre FCC unfair. Being "amateur" in nature, we are inc'lined to object to anything that might indicate we are otlterwise. Ob- serving it another way, paying for the use of something intangible, suclr as a portion of the frequency spectrum somehow doesn't harbor r conyincing apperl. However, looking at it from still another viewpoint, 5-C0Rt application fees is in reality a boon $0tDrRthe instigationot the Ior the amateur service. By its very existence, ue cs - "parasite" xmrteurs will no longer be a serYice whereby h we were issued licenses,and looked slter gratis. To a t- certain extent,we will now pay our own way... I sincerely believe it will alleYiate a certain amount of unfavorable censuring, and may to a ccrtain degree F create a stronger position for the amateilr service. In a sense, the concept of application fees constitute an : excellent example of applied psychology in our favor. No one, but no one desires to abolish a source ol added i.ti.l;ll't;ill.i.;ffi1;Jl;;:::;:1,: revenue! Frank A. PhilliPs, W4LCY/HS For informstion, wrile Depdrlment M41964 For further information, check number 18, on page 110 Bangkok, Thailand l8 CQ Jonuory,1964 giEE fiAIITI I withlno$t for least .. . . SBI.LALINEAR AMPLIFIER i Exceptional...initscompactness...in itshigh power...in its modest price... I new1000 watt P.E.P. four-band amplifier (80-40-20-15). Small... a sizematch for I Sn-lltransceiver and a companionunit to maleup a pairwithout equal as a multi. I bandmobile combination. ButSBI-LA will also work with any SSB transceiver... canboost its output t0 a fulll(W in fixed or mobileservice. I I Thisnew linear incorporates every desirable modern feature. Stable, with passive ; gridinput, it offersa 50 ohmresistive load for SSBexciters. Operation is Class I AB-1for low distortion.0utput isconventional pinetwork. I SAf-Lnapplies the desirable technique of lowplate voltage (only 800 volts) and I highplate current. This lower plate voltage is far easieron capacitors-diode rectifiers-transf ormers-insures safer operation under environmental extremes. J (No J All-solid-state,llTV ACheavy-duty power supply is builtin. rectifiertubes). )d.These arestandard, tow AAEn 6n )wfor other features ) b, ,tU M f / ll

I Bandsr80-40-20-15 meter amateur bands. I ?leasesend full inlormatlonon SBI-LA , Powerrating: 1000 watts P.E.P. input.inr (750 watts l5 meters). I Unearand SB-33 Transceiver. " 400watts AM. I t ^ lrriyerequirements: Approx. 75 wattswa' for full rated0utput. I I ' Inputlnoutimpedance:imledance: 50 ohms resistive.resistiv u I ilME- ' 0utputoritputimpedancerimpedance: (antenna) 50 ohms,o unbal. VSWR 1.5 0r less, I : Powersupply: Built-inEuilt-in all solid-state,solid-sta 117V Ac. L- PrimaryPrimarypowerrequirementsrllsvpower requlrementsr 1f5V AC @ 12Amax. at peakoutput. ! IUMBER STREET (DC)Standbyr 12.6V (nom(nom) @ 7.5A.Peakr 12.6V fa 110A. I ." " TubestlubestSix, type 6JE6. (parallel connected).con GontrorGontrolcircuits;rJilTii.x.:ll'j:icircuits; Antenna switching relays (2) built in. Rear lG ;' terminalsfor transceiver relay control. gaEl'.DEBAN, Sire-Weight!sire'weight!5r/2"H,Srz'H' L13/+"W,Lt3ta"ti' Lt117a"0. Weight 35 lbs, approx. I I ENcrNEEns I 317Roebling Rd. so. san Francisco, Calif, AnoDeration of WebsterrbsterManutacturing I For further information, check:k number 19, on page 1101L0 tI I I I, To Build or Not To Build Editor, CO: In answer to a recent letter about today's hams rely- ROHN ing on manufacturer's products and doing no building of their own, I would like to state the following: So often, details, clear to the old timer, are not fully sefi lhe slqndqrd explained, leading Novices to confusion and frustration. Schematics are shown without mention of parts place- ment, or specifications are incomplete, I wanted to build a piece of equipment from a recent article. The parts listed a coil thusly: 16T Air Dux f816. How am I to know what Air Dux #816 is? Another coil for was simply 2T hookup wire. Two turns of what? AII this discouraged me from building and I will prob- CRANK.UP ably buy a commercial version of the article. I appeal to you more experienced hams, when writing TOWERS construction (and theory) articles, not to take details for grant€d and explain things fully. Robert Entman, WN4RBX 5300 West Grace St. Richmond 26, Va.

F. M. On Six Editor, COj Regarding your ZERo BlAs for July, 1963; while I have no quarrel with your views or opinions I do with your "operation statement that rarely, if ever, extends beyond the lower two megacycles" (of the six meter band). In Whysettle Northwestern Kansas and Southwestern Nebraska alone I know of q,ell over 200 obsolete commercial f.m. trans- for less mitters and receiversthat have been purchased and are either converted or are in the process of conversion for use above 52 mc. A large percentage of these are in use lhsn lhe best? on 53.360mc. i I placed my set in service on Nov. 11, 1962 and since then 400 contacts have been logged. There are .....-'.1.l.".-,.=i lContinued on page 881

KTASK TWO CATEGORIESTO CHOOSEFROM

Stqndord Dvty Guyed in Heqvy Duty Self Supporting Height: of 37 - 54 - 88 - l05 ond Guyed in Heights ot ond 122 feet 37 - 54 feer (SS) 7l - 88 feet (guyedf

ROHNhos these 6 IMP0RIANTPO|NIS:

Eoseof Operofion-roller guides between sections assure easy, safe, friction-free raising and lowering. Strength- welded tubular steel sections overlap 3 feet at maxi- We ryisb mum height for extra sturdiness and strength. Unique ROHN raising procedure rqisesoll secfionstogether-uni- formly with an equal section overlap at oll heightsl all our readers Versotilily-designed to support the largest antennae with complete safety and assuranceol ony heighl desired! Simple Instollolion-install it yourself-use either flat a lfappl and Prosperoas base or special tilting base (illustrated above) depend. ing on your needs. Roled qnd Te:ted-entire line engi- neered so you can get exactly the tight size and properlv IYew Year rated tower for yosr antenna. The ROHN line of towers is complete.Zinc Golvonired-hot dipped galvanizing a standard-not an extra-with all ROHN torvers! Prices starl at lessthan $10r). Californiq DXers The 15th Annual joint conference of the Northern and SENDFOR ROHN TOWERHANDBOOK Southern California DX Clubs wiu be held on January -$l.25 Volue I l-12 at the Madonna Inn, 100 Madonna Road, San Louis -ONLY S 100 postpaid (speeial to reo,lers Obispo, California. Registration starts Saturday at noon ol thts mogozine). Nearest and price is $9.00 which includes Banquet, breakfast and sourceof supply sent on request. Repre. all activities. The SCDXC is taking registration via Dave sentativesworld-wide to servevou, \4'rite today to: W1Cohen, WA6HGC, l?55 Holly Oak Drive, Monterey Park, California, Prizes and prominent speakers are on the agenda.

ROHNMqnufqcturi ng Co. Vocction P. O, Bor 20OO Peorio, lllinoi. Chet Brandon, PJ5CE will accept rescrvations starting January 15th for a ham vacation at his Coral Clifi Hotel "World's Largest EXCLUS IVE Manufacturer in the Netherlands Antilles. All hams with a valid of Towers; d.esigners,engineers, and instalLers lic€nse will get a chance to operate PJ3CC which is of complete communication touer srstems." fcontinued on page 881 For further information, check number 20, on page 110 20 o CQ o Jonuory, 1964 :fr t F. a i I

HEATHKIT SINGLE BAND SSB TRANSCEIVER. . . JUST ltf 19.95 EAGH " . 8On 40 or 20 METERS

80, 40 & 20 METER SSB TRANSCEIVERS-Brand new! More features better performance . . . at one-third the cost o{ three-band units. Save by buying only the bands you needr True Transceiverfor one band, one sidebandoperation o Crystal {ilter type SSB generator. Automatic level control o PTT and VOX cir- cuits built-ino Low f requencyVFO (1.5-1 .7 mc) {or greaterstability than compar- able unils r 2 KC dial calibrationi6" o,fbandspread; vernier tuning. Provisionfor operation with linear amplilier o Easy assembly with heavy-duty circuit board, rugged steel chassis and wiring harness o Welded and braced one-piece steel '100 chassis & cabinet, gimbal mounting bracket o Accepts Heathkit HRA-10-'l KC Crystal Calibrator as plug-in accessory o Uses GH-12 push-to-talk microphone . Operates with new Heathkit HP-13 (DC) or HP-23 (AC) power supplies; also Heathkit HP-10 (DC) or HP-20 (AC) supplies HW-i2,80 meters; HW'22,40 melers; HW-32,20 meters; $119.95 each. HP-23, AC power supplv, $39.95; HP-t3 DC power supply, $59.95.

a a a ! a a aaaaaaaaoaalaaoaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaoaaaaaaaaaa A aa o a a a a o a a a a o a o a a I i SPECIFICATIONS-RF inDut:200 watts PEP.Sideband gene.ation: Crvstallattlce bandpass iilier melhod. Stability: 2oo cps per hour alter warm'u0 Cafrler & unwanled sideband supP.essioni 45 db. Frequency coveragei HW.12,3.8.4,0mci HW'22,?.2-7.3 mc; HW-32,14 2'24 35 mc, Receiver scnsi' tivity: I uvlorl5 db S+ N/N ratio,Receiversetcctivitv:2 7 kc@6db,6 0 kc @ 50 dtl. Outpul:50 ohm Iixed (unbalanced).Operation: HW.12& HW-22,LSBi HW'32, USB Audio oulpul: 1 watl @ I ohms. Mike inputr Hi z, Panel €onttols: FreQUencv,final tune' lunction(OFF-PTT-vOX TUNE), RF qain' AF ga n, (pull for crystalcalibrator), VOX oaln, meter' Frontpanel screwdriveradiusi lor S'meterand VOX delay.Rear panel contiol3: Mikegain, tune Level,J nal bias.Tube complement: Foufteentube hetero' dynecirc!it; (3)6EA8 s mic. amo.,VOX re ay amp.,lF amp., RF amp , Rcvr.mirer; (5164U6's, VFO' VOX amo.. lF amo,. Xmtr. mixeri (1)6886, VFO isolator(HW-12), Het, Osc. and mixer (Hw-22 & HW'32);(1) 128Y7,Driveri (1) 12AU7,Xial osc. productdet.i (1)6E88, Audro amp. and oulplti (2)6GE5 RF o!t0!t. Power requirem€nts:800 VDC @ ?50 MA peak 250VDC @ 100 MA, -125 VDC @r5 MA' 12 VAC or 'qil@effi'. VDC @ 3.15amDer cs. Cabinet dimensions: 6l{" H x 1?.Vl t.gra"D ------l

12.1.i I HEATH GOMPANY I Benton Harbor, Mich. 49023 I Enclosedis $-, plus postage.Please I send model(s)-. I Please send Free 1964Heathkit catalog.

Add I City *--.r- or*llz I

For further information, check number 21, on page 110 Jonuory, 1964 o CQ c 21, '64! BETTER THAN EVER FOR C.4rT GRE NEW rNTEN(CEPT(o.It,

HERE'STHE ULTIMATERECEIVER FOR THE SERIOUSVHF OPERATORWHO WNNTS_ TOP PERFORMANCEON AM, CW, ON CCA Nowthe top favoriteof VHFAmateurs where,Clegg's INfERCEPTOR receiver. in offerseven more spectacular performance. "INTERCEpTOR The new B,',now available at NOW ADD your dealers, is a dual conversion50_54 mc SUPERB GENERAL COVERAGE receiverwith a self-containedcrystal controlled 3 THROUGH 30 MC converterfor I44-I48 mc reception.A switchable TO YOUR INTERCEPTOR RECEIVER crystallattice filter permitsextremely sharp se_ (Either B or Earlier Model) lectivityfor SSB and CW as well u, prouio,ng The new Clegg ALLBANDERconverter/soeaker 8 KCof bandpassfor strong combination, attractivelypackaged in a match. localsignals and net Ing cabinet, operation. now extendsthe tuning rangeof any Both diodeand productdetection are INTERCEPTORreceiver to complelelyiover a[l provided.Automatic and variable frequencies (with the exception 22"27 MC) be- thresholdnoise tween 3 and 31 megacycles limitersf unctionrespectively for AM and SSB.CW . Frequencyrange and preselectorcontrols pro- reception.A new electricalband spreadcontrol vrde easy selectionand matching of the desired provides tuning rangewhile the INTERCEPTORcontributes t 1 KCto the receiversmain tuning dial superb selectivity, sensitivity and stability. After for easein tuningSSB and CW signals. adjustmentto the desiredfrequency segment all tuning is accomplishedwith the TNTERCEPTOR'S Converterinput providesf or 220 - 432 mc ano main tuning dial. up, as well as for excellentgeneral coverage With the ALLBANDEaIyour TNTERCEpTORwill of not only receiveall ham bands between3-30 MC the lower frequencybands using Clegg,snew but also intermediatefrequencies where many ALLBANDERconverter. desirable.signals (WWV, Citizens Band, foreign speakercombination (de_ broadcast,etc.) are found. scribedto the right). _ Operating power is supptied by the INTER- CEPTOR. Spacewill notpermit a completedescriotion of this fine new receiver,but Clegg ALLBANDER,/Speaker-Amateur we,d like to suggest Net...... $129.95 that you see one at your dealersor write tJ the factoryfor completedata For other Squires.Sandersproducts see oppositepage.

Visityour distributor today and see the famousClegg family that is makingVHF history.

Uilffi I it?r t-- ,? ZEUS6&2meter VENUS 99'ersix transmitter185 watts THOR6 6 SSBTransceiver meter8 watt 6 metertransceiver 85 watts PEP transceaver.. . $159.95 AiI & CW.. . $695.00amateur nel . . . 9349.95amateur net . . . $475.00amateur net. amateurnet

Seeyour Distributor or writefor information. LA BO RATO R I ES I Rr 53,Mr rABoR,N. J. Division of Sctuires.Sanders, rpc. TELEPHON E 627-6aOO I For further information, check number 22, on page lI0 22 o CQ o Jqnuqrv.1964 The [Yeu:Standard of PerformaTrce receivers.A completely T1e SS-lR setsa new stanilardof performancefor amateurband cornmunication and overload,while the low noise ;;; T;;;-.;-d..ign' pr;;:il;. .rr].i, i.".a,,'ni from crossmodulation -rritli cry*ial b-a-ndpassfilters balancedmixers deliver sttperior sensitivity no r.i. stage.Steep-skirted with ereater tlian B0 db ultimate ;;d^;"."j1y J;;;t"p"a r'igil.6'ii^"i;;;i;; f.ouid" optimum sele-ctivity tr..ao." fiom c.o.. modulation make artenuation.Extreme ri#"ir),,'a.rrrl"'r"Jp-ecc"i"J-tir-i,rtrnrro it"ri .nJ Frequen-cv.precisionand stabilitv rhis selectivity *. "fi."tluii4."iir";*h l; ;i; ;; terminals. on a digital disp}ay' "**"a* *"t "f *ort f."que*f -.-t"r.; {requency is read directly amateureguipment' The unique SS-IR There are nany new operating conveniences-notfouncl in other (and an au*iliatv.5'0 to 5'5 NIC.5and)' 4esign,plus fixed tune,t'il\ii ir".i,l"r. at, 10.0 il i5.0 NIC tu:iddle'The manual tuning rate pernritsantocalibrati,n o{ the uriui",,,. bancls- uith no ,rr,ro, ii"t to - per knob - wirile pushbutton i. ,.'il ;;;;;l; i"; "u.y onJ .*".t .ia.luna tuning tO k". .revolution with spectacular per{ormance' is nr.tor tuning gives last ;;;.;;. A" optional..n.ise"silencer a""e.soty be opeiated in iransceivermode with the available,as wilt b. " V;;;;^il;;;;.;;;".. fft.-bS-rn may SS-l'I transmittet'. "A 1! 2PUL, sept' 1963'2 Pre'I'F' Noise silencer"' i6i,'' oct' i963' ;.- -""*t*"och to ReceiverFront.End Design", \\'. K. Squires' QsT, | PRoFILE I speclrtcATtoN db 80 through10 M (eight,50.0kc.^seg' o l.F.and lmage Reiection: Greater than 60 I . rrrqu.nrvCoverage: with Fixedtuned wwv ii ro.ou,iois.o tvtc;s.o.s.s o CrossModu|ation: ExampIe: Recelving' a.10 lv.signaI I ments). signal20 I Mc auxiliarv(wwv"5'd rvrcl' i*t generalcoverage 2'5 kc' selectivitv'an unwanted0'1 volt crossmoduration I ;b"0;;;;c;.ri;" kc. awayproducei negligible Noneat statedsensitivity . tr'r*lr',y' sic.yz.skc./0.35 kc. r InternalSpurious: J o AGC:Attack - 1 ms',.Slow release - 1'0 sec" Fastre' I o- Stability:-'"-ilil Less than 500 cps warmup drift (typically in less inctuding lease-o.l sec. I s ,i..[ r.* t-hinroo cpstneieitter towto highline variation I o ANL:lF' type;orc-rates on AM'SSB' and CW o Sensitivity:yz pu,otbetter, for 10 db S/N0n 10 M with I H x l6vq" w x 13" D' 25 lb' I 5 kc,bandwidth ' sizet73/4" I I Squires-Sanders, Inc' *AT.HUNG' N'J' c 755-.222 I 475 *AT.HUNG AVENUE' I For lurther information' check number 2B, on page 110 TheSB-8 $JlffiIltXo,,,. BY HARTLAND B. SMITH,I., WSVVD

Described below is on 8-tube horne-brew sidebond odoprer capoble of 11lv-o-gingmany a fine a.m. rig from rhe scrop heop. It is o bondsw itching 80'10 mefer ;;Cou., unif bosed on the reosonabrypriced Mcco,y Guorj- ion" 9 mc filter. consrrucfion ond olignmeit ore unco;plicoted, wifh cosf in |he vicinityof $100 for parts.

HERE's no use denying it, sidebandis here CircuitDescription to stay.The questionis no longer whether The method to make the changeto sideband.it is how of accomplishingthe conversion to accomplishthe transition. from carrier to sidebandcan be reaclilvunder_ stoodafter Unfortunately, many hams are saddle

Fig. l-Block diogrom of the filter-type sidebond odopter :howing mixing ond operoiing frequencies.

24oCQoJonuory,1964 The SB-8 is on eight-tube filrer-type single sidebond generotor/mixer which, wha used in coniunction with on exisling o.m, or c.w. rig, will give s.s,b.output on 80 rhrough I l0 melers. Pqnel controls ore. from left to right: top, TNPUTPADDER, 54; METERsENsrTrVrTY, Ra; middle row: MooE switch, 53; caRRrER NULl, R1; cARRtERNULL, R3; SENO-RECEtVE,55; boltom: AUDTOellN, R2;5|DE8ANDSELECTOR, 51; BANoSWTTCH,52 dnd PLATEruxrxe, C11. Tubes ql the cenler ore, l. lo r.,6JH8,68A7 ond 5AU6. A simple shock mounted fon cools the two 6AG7s used qs r.f. omplifiers pro- ducing opproximolely l0 wotis p.e.p.

A small amount of r.f. from the companion Construction a.m. transmitteris applied to the grid of the bal- Chassis dimensions are 3" X 15" X 8r/2" anced first mixer. Z.',.another 6JH8. The trans- The front panel is \Vz" wide and 9" high. mitter carrier is suppressedwithin this stageand, Shields,3" X 7V2", cut from sheetaluminum for all praciical purposes,does not appearat the are installed betweenstages as illustrated in the output of 25. However.the amplifieds.s.b. signal photographs.The shieldsare placed41/+",77a" coming from V+ is mixed in Z; with the trans- and 9/2" from the chassisfront. An 8/+" X mitter carrier to produce sidebandoutput at a 143/+"botlom olate should also be used. frequencywhich is either the sum of. or differ- The shield betweenthe input and output ter- ence between. 9 mc I I 500 cycles, and the minals of the Mccoy filter is especiallyimpor- frequency of the transmitter. tant, since any unwanted energy that sneaks If the transmitter is set at 7.25 mc, for ex- around the filter will degradeits -55 db attenu- ample, a 16.2515mc s.s.b.signal (7.25 plus ation spec. 9.0015) will appearon the platesof Z.-,.This Trimmer capacitor C3 comes into use only signal is then fed to the injection grid of Zr;. a when ,Sris thrown to the ruNr, position. It pro- high-gainpentagrid second mixer. The 9.0015 vides extra capacity to pad the frequency of Y2 mc energy from Vt, coupled to grid # | of Vs, down to exactly 9 mc, right in the middle of the beatsagainst the 16.2515mc s.s.b.signal to pro- filter's passband.At the same time, another sec- duce still another s.s.b. signal at a difference tion of 51 grounds pin I of 22, unbalancingthe frequencyof 7.25 mc. As you can see,we have tube and preventing suppressionof the 9 mc arrived back at the original transmitter fre- signal from Zr. This arrangementallows plenty quency. Instead of a carrier, though, we now of carrier to reach the following stages of the have s.s.b.,minus carrier. adapter and transmitter for tuning purposes. Two 6AG7 r.f. amplifiers, wiled in parallel, With this arrangementyou don't have to whistle amplify this s.s.b.energy sufficientlyto drive a in the mike or utilize an audio tone generator transmitting tetrode biasedfor AB1 linear oper- when peaking and loading the final. ation. Output is more than adequate for two Do not changethe indicated capacitor values 6146'sor an 813. associatedwith T1 and 72. If you do, the filter An interesting characteristicof this unit is will be improperly terminatedand humps will that no matter what crystal frequency is em- appearin its passbandcurve. The two unmarked ployed at V1, the frequency of the suppressed capacitorsshown outsidethe shieldsof Ir and carrier at the output of the adapter will be e,r- ft are suppliedconnected to the transformers nctly the same as that of the transmitter carrier and shouldbe rewiredas shown. fed into Z;. Consequently,any slightdrift rvhicb The bandswitch.S: is assembledfrom a Cen- may occur in the 6C4 oscillatorcan have ab- tralab PA-301 shaft and index assembly,plLrs solutelyno effecton the transmittedfrequency. four Type-33.2-pole -s-position phenolic -l-his switch meansthat the generateds.s.b. signal has sections.Mount S1 on the front shieldand drill exactly the same degreeof frequencystability holes large enough to accommodatethe shaft as the a.m. or c.w. transmitterto which it is and supportrods in the other two shieldsthrough connected,because whatever we add in V;, we which they must pass. subtractin Z6 or vice-versa. Ordinary shieldedaudio wire, the kind with a

Jonuory, 1964 o CQ o 25 .tml-4OOtr poPet

"--sro

YzT '-d

1mf-40Ov.popet er f, +l2ax7

220 c :L rrn 12K 3Ohl T 25r. +3OOv.

"SB-8." Fig.2-Diogrom of the crystol oscillqtor,bolonced modulotor ond qudio section of the Sidebond seLcto. switch, Sr is lobeled sBr ond s82 rqther thon uss or LsB since sidebond inversion occurs on l0 ond 1/z l5 melers. See lext for explqnofion o{ unmqrked copocilors osscciofed wifh 11. Resisforsore wqll unless otherwise indicqted, Decimol volue copocilors ore disc ceromic qnd ore in mf; olhers ore lubulqr ceromic ond ore in mmf unless noted differenfly.

Cr, Cu-35 mmf oir irimmer. Hommorlund APC-Type. S1-4 pole 3 posifion rolory switch.Mollory 3243J. (One Ca-3-30 mm{ mico lrimmer. El Menco 461. pole not used.) Ca-75 mmf qir lrimmer. Hommarlund APC-75. S5-S.p.s.l. rolory switch. C5-43 mmf tubulor ceromic, zero lemp. coefiicient Tt-10.7 mc inlersloge lrqns{ormer. Merii FM-254 or (NPO). equiv. Modify os per texl. C;7r-See fig. 5. Yr-8.9985 mc. Supplied with 21. l1-See coil loble. Y2-9.0015 mc. Svpplied with 21' "Golden R1-5K pof., lineor loper. Zr-McCoy 48Bl Guqrdion" 9 mc crystol filter. R2-500K pot,, oudio toper, with switch, (So,fig. 5). McCoy ElectronicsCo., Mt. Holly Springs, Penno. tinned outer braid, is stritablefor the long runs which, becauseof its size and price. is especially associatedwith the 12AX7 speechamplifier. All suited for the job. It will operate almost noise- other shieldedleads shown in the diagramsre- lessly if you duplicate the rather unorthodox quireRG--59/U or similarcoaxial cable. mounting arrangement utilized here. Fasten the The sltrg tuned coils are wotlnd on Superex frarne of the fan to a 1" X 3" strip of Masonite 3/e" type C-3 forms.Any Superexdealer who doesn't with epox1, gltre. Cut a 1" X 3" X slice stock them, can obtain the forms from the fac- from a cellulose sponge and cement the sponge tory on specialorder.r With the exceptionsof between the chassisand the Masonite strip. Lt and Ltt, eachcoil consistsof two windings, Neutralizing gimmick C" is made by twisting one on top of the other. separatedby a la1'er together two pieces of hookup wire. For a start, of plasticelectrical tape. Hold the turns in place 3 or 4 twists should be sufficient. with Q-dopeor servicecement. Since paralleled 6,4G7s, especially at 10 Fronf End Alignment nleters,are apt to suffer fron-rinstability, care The 9 mc portion of the circuit must be aligned nrustbe exercisedwhen wiring the outptlt stage. first. Use meter M1 as a tuning indicator by Mount the 6AG7 socketswith pins4 and 5 near- temporarily hooking it up as shown in fig. 6. est the rear of the chassis.Run short' separate l{emove the 6AG7s from their sockets to pre- groundleads from pins 1. 3 and 5 of eachsocket vent overheating, Advance Re only far enough to to the chassis.Bisect the socketswith a 2" X close ,56.Set .t1 at :ruNE, and ,S; in the seNo posi- 3" shieldcut from sheetcopper ol brass'Solder tion. the shield to pin 3 of each socket.Protect the Tune a nearby receiver to approximately 9 mc shieldwith electricaltape wher-ever it passesclose and adjust L1 for strongest oscillation as indi- to an ungroundedterminal. cated on the receiver S-rneter.Turn rtp R+ until Sincethey are operatednear rtlaxiltltllll rxting' you get sonreindicaticln on meter hlr.'l-une Tr, forcetl-aircooling rtf the6ACi7s is tecollrtnendetl. 7:.:,/,-1 and C'r for nraxintttrtt ncetlle deflection. Allied Racliolccently illtroduceda low-costIan You'll undoubtedly have to back off on ,ltr as alignnrent progresses. IsuperexElectronics Corp.,4-6 Radford Place, Yonkers, N.Y. Begin with the top slugs all the way up and

26 o CQ o Jonuory, 1964 yiew Botlom o{ rhe SB'8 using on Sy2" X 15" X 3" chqssisshows fhe fhree inferstoge shields. The left com_ portment housesihe corrier oscillotor, bolonced modulqtor qnd qudio circuilry. In this comporlment, mico trimmer, C3 is mounled obove the loctol socket used for crystols Y1 ond Y2. The :econd comporfment contoins the 6AU6 s.s.b. omplifier ond the 6JH8 bolonced firsi mixer iogether wifh its ossocioted tuned circuits. The 6847 ond inducforsrs'r12 ore '" 'n" "1:;:.;:lt?JT:*.1'l'l;iil',',"[?"ilT"l'"iJ,"*ilrlhe rourmico'irimmer roodins

the bottom slugsall the way down in f1 and 7y. reaclsexactll full scale.Slowly decreasethe ca- Handle the sltrgswith care! 1-heyrvill be serioLrsi,.' pacitl of C'1 until the preter rea6s 3 It6 of full damagedif you attempt to adjust them with an1- scale.Crlstal )'1 is now operatingapproxinrately thing but the proper hex-shapedplastic align- l0 db down the upper slope of the filter. ment tool. Put.!1 on sB1,ancl tune cr for maximrrm out- Place J1 in the sal position. Adjust C: for put. Reset Rr for a full scale nreter reading. This maximum meter reading. Set R1 so the meter time, increasethe capacity,of C1 Lrntil the meter

6AU6

130 T 1q

Fig. 3-Diogrom of the 9 mc s.s.b. omplifier qnd the bolqnced first mixer. The unmorked copocitors ossocioted wiih f2 ore exploined in the texi. Bqndswitch 52 is gonged olso to switch seclions in fig. 4. All resistors ore li wott unless ofherwise indicoled. Decimol vqlue. copocilors ore dir ceromic ond ore in mf; others ore tubulor ceromtc ond ore In mmt.

C6, Cs, Ce, C1q-50 mmf oir trimmer. Hommqrlund APC- S2-Four Cenirolob Type 33 2 pole 5 pos. wofers on 50. Centrqlqb PA-302 shqft ossy. See lexf. Ci-35 mmf qir irimmer. HommorlundAPC-35. L2-17-Seecoil tqble. T2-10.7 mc inlerstoge trqnsformer. Merir FM-254 or R3-5K pot., Lineor ioper, equiv. Modify os per lext.

Jonuory, 1964 o CQ o 27 68A7 Second

I a.-+ | (FromV) I | 22^3 I l1w 1 ir- tl

2 5mh t o,1

Fig' 4-Second mixer, lineor omplifier qnd o.m.-s.s.b. switching. Meter M1 is connecfed os in fig.6 for iniiiol fune'up' Decimol volue copocilors ore in mf ond ore disc ceromics; olhers ore in mmf ond ore lubulor ceromic. Cr-200 mmf voriqble, Hommorlund MC-2OOM. [17_33t. f 30 e. on Superex C-3 form or equivolent. C?2,Cl3-50.380 mmf mico trimmer. El Menco 465. Mr-0-50omicroommeler. cii, cii-rro-sgo ,ir ,i"o'rrirmer.El Menco 467. R4-l5OK pol. Lineor Cn-Neutrolizing copocitor. See f ext ond photo. toper. Ls-112-Seecoil toble. RFCI, RFC2,RFCa-2.5 mh r.f. choke. lr3-5t. B&W 301 I Miniductor. S2-See fig. 3. Li4, h5-3t. B&W 3Ol I Miniducfor. S3-2 pole 2 pos. rotory switch. Mollory 3222J. 116-36t. B&W 3012 Miniducror topped 7t. from 115end. Sa_S.p.s.t. rotory swirc;. reads3lckof fullscale.Set^!1 toruNeandadjust Throw.!; to REcErvE.plug the mike into./1 C3_formaximum output.,.., and close its push_tJalk iwitch. nefav f, Set R1 at mid-range. ^ - With.tl at sa2,adjust Ca (fig. 5) should p"fl i". iilt tutt . or buzzes,re- for a meter reading of zero.,even with Ra fully duie the spring iensionsiightly. Increase R2 until advanced.If you can't achieve a complete nuil Mr begini to move when you speak into the at maximum meter sensitivity,readjust the pri- mike. Whistling should causeMl to kick over mary slug of Zr while varying the capacity of just about as fa'r as when Sy is in ihe ruNr posi- C+. Some combinationof thesetwo adjustments iion. Front entl alignmentis now complete. should result in almost complete suppressionof the carrier.With 51 at sr1, the meteishould re- Mixer Alignment marn very at. or near,zero. Removethe temporarywiring associatedwith

Close-up view of lhe r.f. omplifier/ power supply comporfmeni. Note the copper shield ocross the 6AG7 sockets ot fhe upper left. The push-to-tolk reloy ond the 9 mc trop induclor It7 ore mounled on lhe reor opron. One of the two SO-239 cooxiql connectors is visible over lhe reor edge of the chossis. The neutrolizing copocitor C, is visible ot the left in the nqrrow compqrtment.

28. CQ o Jonuqry, 1964 i

"Exfernql Fig. 5-Power supply ond control circuitry {or the SB-9. The lerminqls morked Control" moy be used lo energize on ontennq reloy, lineor omplifier, efc. The -12v. biqses the two 6AG7 lineor omplifiers. B'-Fon.Allied Rqdio 39A4575. CRe-l N34 diode. Crz-50-5G30nf , 450-450'25v'd.c.Three section con- Kq-D.p.d.t. reloy. 6.3v.d.c. coil. Potter ond Brumfield type electrolytic. KA-I I D. CHr-Filterchoke, 2.5 h., 20O mo. Sr-S.p.s.t. swifch on control R2 (fig. 2). CRz-CRz-400p.i.v. 500 mq silicon diodes. T1-Power tronsformer,520 v.c.i. 90 mq,6.3 v. 3 o..5 v. CRs-40Op.i.v. 750 mosilicon diode. 2 o. Knisht (Allied Rqdio) 61G412.

Mr. Plug the 6AG7s back in their sockets.Con- The SB-8 may now be aligned for the higher nect a 7Vz watt bulb across"/:. Feed a 75 meter frequency bands following the procedure out- carrier from your exciter or transmitter driver lined in Table I. At 40 meters,a certain amount into "/2. Switch Sr to ruNE Ss to sss, ,Szto 75 of residual carrier will appear in M1 no matter meters,and ,lr, to send. how you adjust Co and Lc. This effect is due to Adjust L:, Lz, Ltz, Cto and Crr for maximum the broad band characteristicof 111 which al- output as indicated by M1 and the brilliance of lows a small amount of 9 mc energy to reach the bulb. Reduce the drive from the exciter or the final. This unwantedsienal can be minimized transmitter to a point just below which the bulb beginsto grow dimmer. You may have to switch R5 across the input lead or reduce the capacity 1N34A of Cls in order to lower the drive sufficiently. Mr Only a whisper of r,f. is required at tlis point. Do not overdrive the grid of Zr. Set R.gat mid-range. Switch ^Srto sB2.Tune ivs Cto and Z7 for minimum meter indication. This r-x-_] 6JHg adjustmentsuppresses the 75 meter carrier feed- T\- ing into./r. It is possiblethat a slight change in Jj' the settingof R1 and R3 ma! also be required to 'l produce the deepestnull. Turn up R2 and speak l, into mike. The bulb should glow brightly, but Fig.6-Temporory meier conneclions for initiol front- probably not at full brilliance on speechpeaks. end olignment of the filrerJype s.s.b.odopter.

Tcble I - Aliqnment Chqrt i I I I 12.90 I r 7.25 16.25 I 14.30

Tobfe f-Alignmeni Chqrt. Adiustments mode with 7th w. Sulb os dummy lood. Sei AUDIo GAIN,R2 oi minimum, CARRTERNULL controls, Rl ond R3 ot mid-ronge, MoDEswiich, 53 of SsBond 55 ot SEND.

Jonuory, 1964 o CQ o 29 Coil Tcb]e

(oil t,t L" 1,,, L, L. L,, L. L. L,, L," Li L,, 'l rtttts 'l :ll 15 I I rl l+ :.1 t' 75 Pri. Il irc -i(, -J0 I li l0 .fr-:e l0 llJ :8 t0 28 30

T urtts 25 11 l8 T4 23 30 60 .5cc. --i;;" 30 lll :0 .t i-:c 28 28 :8 20 :0 :0 28 30

All coils closs wound on:i's" dia. slug turlcd fonrs as thc Srpcrcx c-3 or cTC I-S3-li. using cnuDrcl wirc. Sccondaricsatc Fo(rnd orcr prinraricslnd arc scpararcd try r singlc l,,j.i.-,,r-"rJ.tr-ii,,r',un.. *Spaccd cliamctcrof $'irc.

by carefully the adjusting 9 nrc trap coil. L17 rt ing into the r.f. Ieatl between the driver and final. the output. rou'll hare l() l(r$erthe classC biason the final Should you be unable to achieve a satisfactonr to ABl level. In the caseof 6146,s.this amounts mixer nrrllon a particular bancl.tr'1 reversing rht to 50 volts. A chart of thc correct ABr bias polarity of the rrixel plate coil secondarl'. Due valuesfol other rrrheswill be found in the Side_ to differencesin lead le.pgthsand component ar- band chapter of rhe ARRL Hrtntlbook. Details rangements,it ma], necessary be to alter the fixeJ on driving. tuning and loacling a linear are con- capacitor value on some primaries. nrixer coil tained in Chapter 6 of the Ce Sitlebuntl Hantl_ On l5 an

,.r{i,t*r

-,o(or.AM .,"co" 3/ 6c.oss c 'o-sm 'er B|AS

Fig. 7-Two mefhods of connecting the SB-8 to existing Reor ponel view of the eight-tube s.s.b. converter. o.m.,/c.w. geor. In (A), o seporote lineor omplifier is qre: "Golden Mounted from l. to r. the McCoy Guord- used in coniunciion with the SB-8 ond o low-power all- ion" 9 mc crysiol lollice filfer, tronsformer, It;6JH8 bond exciter. (Bt shows the chonge necessory if the bolonced modulotor; 6C4 cqrrier oscillotor ond l2AX7 existing power omplifier in q trqnsmitter is to be used speech omplifier. The front ponel meosures 81n" w, x for o lineor omplifier. Sufficientoutpuf is not ovoiloble 9" h. to drive o grounded grid omplifier.

30oCQ Jonuory, 1964 CO Reviews: I The LafayetteModel HE-73 Precon

ATTAyETTERadio Electronics Corporation has conre up with a novel innovationfor a rcceiveraccessory. This is their Model HE-73 Preconfor installationbetween the an- tenna and a receiverto servecillter as an r.f. anrplifier/pIc-selectoron the l0 tht'ough 80 meter anlateurbands or as a crystal-controlled convertcrfor the 10. l5 and 20 meterbands. It can also be usedon the I I meterCitizen Band. The mode of operationmay be chosenwith a front panelselector switch. A self-containeda.c. power supplyis alsoincluded. Pre-Seleclor lofoyetie Model HE-73 Precon is o neotly sfyled pre- As a pre-selector,the Model HE-73 will pro- selecfor/converler combinolion. The knob qt the upper vide additionalr.f. anrplificationfor a receiver, lefl is used to peok up the signol, Those ot rhe boltom resulting in increasedgain and sensitivity.In ore lhe function swilch, bondswitch ond goin control. many casesit also will better the overall signal- A pilot lighi is ot the lefl, to-noise ratio of the receiving system. Besides circuit to provide a low irnpedanceoutput. A this, it will add front-end r.f. selectivity and control in the cathode the first stagepermits thereby inrprove i.f. image rejection.This is an of adjustmentof the gain to preventoverloading of especiallydesirable feature for single-conversion the receiverwith strong signals.Bandswitching receiverswhich use a low-frequencyi.f. system. is employed for optimum performanceon each With recciverswhich do not have an r.f. stage of the amateurbands between 10 and 80 meters. ahead of the first n-rixer,the use of the HE-73 not only will improvethe r.f. selectivityand i.f. Crystol-Controlled Converter image rejection. but will also increasethe sen- When used as a crystal-controlledconverter, sitivityconsiderably. the HE-73 will make a sensitivedouble-conver- Referring to the block diagram, fig. 1A, high sion system out of single-conversionreceiver gain is obtained by the use of two stages of a for useon the 10, l5 and 20 meterbands. High r.f. amplification, while the desirableselectivity signal-to-noiseratio with excellent image rejec- characteristicsare obtained with a high-Q r.f. tion will be realizedand it will make possiblea circuit in each stage,both of which are gang- higherdegree of frequencystability than usually tuned from the front panel to peak up the signal. is experiencedon these bands with many re- A 68A6 pentode,21, is usedin the first r.f. ceivers.Also, it will extend the frequency range stageand the pentodesection of a 6BL8, Z:r, in receiverswhich have limited coverage. the second stage. (The triode section of the of A block diagram the converter 6BL8 is not usedduring pre-selectoroperation). of arrange- ment is shown in fig. 18. /:. is now usedas a This stage is followed by another 68A6' yi' pentodemixer insteadof straight-throughr.f. which is triode-connectedin a cathode-follower a stage,while the triode sectionof the 68L8. I/2r,, is used as a crystal oscillator/doubler.Funda- mentaltype crystalsare usedwith the output of tr/:u doubling the crystal frequenciesof 12.25, 8.75and 5.25mc to 24.5,17.5 and 10.5mc to providethe mixer with heterodyningfreqLrencies for the 10, 15 and 20 meter bandsrespectively. When the converteris usedfor 10, it's output frequenciesfall in the 3.5 to 5.2 mc rangeover which the receivermust then be tuned.On 15the mc. 20 I tuning rangeis from 3.5 to 3.95 and on metersit is from 3.5 to 3.85 mc. Theseranges

I are directlymarked on the panelof the Precon. The actual receivedfrequency may be deter- nrinedby addingthe frequencyindicated on the receiver'sdial to the heterodyningfrequency for the band in use.For example: A receiverdial reading of 3.ti rlc plus the heterodyningf re- quencyof 17.5nrc (for 15 meters)eqttals 21.3 Top view of the HE-73.The power supplyis enclosed mc, the frequencyto which the systemis tuned. withinihe shieldqt the center. Since the converteris crvstal-controlled,the

Jonuory,1964 CQo3l I -_J I I I L --J

vrs 6BL8 (T. ode) CA' -l-

-$.zs s IM. Fig. l-(A) Block diogrom of the HE-73 Precon when used os o pre-selector.(B) Block diogrom when used qs q converler. correctness of the frequency, as determined signal-to-noiseratio and the noise figure.Less above, will depend on the accuracy of the re- crossmodulation was also experienced. ceiver's dial calibration. Receiver frequencv With regardto noise,it shouldbe kept in mind stabilityLrsually greater is in the 3.5 mc ieeion that this refers to the inherent noisebf the re- than it is at the higherfrequencies, so the ovirall ceiving systemalone. Man-madenoise picked up stability of the system,when used on the hieher through the antenna will be amplified to the sami bands,will likewisebe better. extent as will the signal,so the benefitsresulting Conlrols from improvednoise ratios will be realizedonlv at quietlocations. A three-position function switch provides a Lf. signalrejection (3.5 choice of straight-throughoperation (antenna to 5,2 mc) wasmeas- ured at an averageof 60 db. connecteddirectly to the receiver,bypassing the Precon), pre-selector,or converter operation. Physicol5pecifi cotions When eitherof the Iailer two are used.the self- The unit is ruggedlyand nicely fabricatedwith contained a.c. power supply, using a solid-state easy accessibilityof components,should serv- rectifier,is switchedon power at the sametime. icing becomenecessary. It is housedin a medium is turned off for straight-through operation gray perforated cabinet measuring 10" w. X (switch at orr). The input impedanceof the 6" h. X 8" d. The upper half of the panel is a unit is approximately 50 ohms with the output glossymedium gray, the lower half is semi-matte designedfor feeding into a low impedancc. aluminum. Weight is 972 pounds; power con- A bandswitchselects the desiredrange of op- sumption is approximately 18 watts. eration.Each panel band is identifiedon the with The Model HE-73 Precon will be found a largenumerals togelher with theconuerter', out- worthwhile accessory for improving receiver put frequencies(the tuning range required for performance. It is an imported unit, supplied the receiver) on each band. with a complete operating manual. It carries a The gain control is also located on the front price tag of $49.50and is marketedby Lafayette panel, as is an antenna-trim control. The latter Radio ElectronicsCorp., 111 JerichoTurnpike, tunesthe two r.f. circuits to insure a high signal- Syosset,L. I., New York 11791-W2AEF to-noiseratio and to maintain goodr.f. selectivity. SO-239coax connectorsfor the input and out- put circuitsare located on the rearapion together with a two-terminal receptaclefor connectingto an externalcontrol circuit to remotely disablethe B-plus circuit of the unit. Performsnce Measurements,as well as listening tests,indi- catedthe Model HE-73 to perform exceptionally well. When used as a pre-selector,the gain was found to be 18 db on 10 and 15 meters, 34 db on 20,27 db on 40 and 45 db on 80 meters.With a single-conversionreceiver having a 455 kc i.f., image rejection on the 10 meter band was im- proved by almost 25 db. Used as a converter, the sensitivity averaged better than 0.5 pv for a 15 db signal-to-noise ratio. Noise figure on 10 meters measurednear 6 db, equal to or better than the averagecom- munications receiver. When operated as a pre- selector,similar results were obtained. Used in conjunctionwith severalmanufactured receivers costing over $500, it improved the sensitivity,

32 o CQ o Jonuory, 1964 SquelchStahilizatinn BY RONALD L. IVES':.

I Squelch circuits,olso referred fo os codon circuils,hove been widely used in commercialond amsleur work. Sometimesfheir operolion hos i "sticky," been sornewhol Here ore sorne improved circuils,using fhe loteslfube typesond zenerdiodes, thot will ProYidef oolproofoperotion.

also known as a In use, the simple squelchis entirely satisfac- ',T-tHE_conventional.squelch. 'codan. signals. | or as an interstationnoise suppres- tory when receiving intermittent strong I sor, has beenwidely usedin communica- When no signal is coming in, the speaker is tions work for almost three decades.When care- silent. When, however, the signals being re- f ully designed and constructed, it is a most ceivedare weak,or are subjectto severefading, valuableaid to effectivecommercial and amateur the squelch is less satisfactory.Although the communications. controltube ( z,r, fig. I ) is a sharpcutoff device, Basically,the squelchis a gatedaudio ampli- the systemis not. As the a.v.c.voltage rises, crtt- fier, the control voltagebeing suppliedby the ting off the control tube, the plate voltageon receivera.v.c. system.Operation of a simple that tube is elevatedby the voltagedrop in R' squelch,whose circtrit is shown in fig. 1, is as producedby conductionthrough Z',,.This shifts follows: the cutoffpoint of the controltube, producing a range of a.v.c. voltages in which Z', is neither' fully cut off nor fully conducting.This produces (souring). t2AX7e1c severedistortion of audio signals lf the audio bypasscapacitor is too small (C,, fig. 1), and bleedercurrent is minimizedfor ) R3 LOOO/!olt reasonsof power economy,audio frequencies 47oK l'- get tube, producing very R" A- may into the control an* | annoyingintermittent operation (blopping). In- coniiot adequatea.v.c. filtering has much the sameeffect' .I. R1 AV.C, ---! / r theseevils are usually hgur €ml 75K-15( Various combinationsof gJ found in misbehavingcodans. With the simplesquelch. E,, can be madesub- current Fig.l-ln thissimple squelch circuil V1r is o d.c.ompli' stantially immune to changesin the fier, conlrolledby the o.v.c.voltoge ond turns V1, on through the audio tube by choosingvoltage di- or off. vider resistors(R, and R,,. fig. 1) such that bleedercurrent is from 30 to ,50times tube cur- When there is no a.v.c. voltage. Zrr cofldttcts rent.This works well, br.rtimposes an inordinate heavily. Voltage drop across R, in the Z'u plate load on the power supply,and producesa heat circuit biases the grid of Z', very negative with disposalprobiem in many installations. respect to its cathode. In consequence, the tube Until recently,the bestanswer to the stabiliza- is cut off, and will not pass an audio signal. tion problem was to regulateE" by useof a volt- When the receiver a.v.c. voltage rises to the age regulator tube, as in fig. 2. This provides cutoff value of I/'u, that tube stops conducting' excellent regulation of the control tube plate there is no more voltage drop across Rg, and Z,^. supply voltage,as indicatedon a d.c. meter' but no longer cut off, functions as a normal audio is otherwise not very satisfactory.The voltage amplifier. regulatortube (/,, fig. 2), injectssputter ancl The operating point of Vr, can be shifted by varying R,, R,, or by use of a high resistance potentiometer in the receiver a.v.c. circuit. The 8+ value of this, however, must not be too high, or 3C 30Cx contact potential, generated in Vrr, will not only keep the tube nearly cut off at all times, but will i also inject negative bias into the receiver a.v'c. system, reducing sensitivity. I Similarly f unctioning circuits, rrsing a pen- I tode for Vr, and permitting close adjustment of sensitivity.have been described fully elsewhere.'

*1075 Palo Alto, California. Harvard Street, Fig.2-This circuit is similor to ihqt shown in fig. I rIves, R. L. "Codan Elimination of Intersignal Noise,' excepl thot the plole voltoge of V1u is stobilized by PST, Oct., 1952,p.36. "Practical o{ ihis circuit qre de' Ives, R. L. Codan Circuits," Radio-Elec- tha vr tube V2. The limitotions rronics, May, 1962, P. 32. scribed in fhe lexf.

Jonuory, 1964 o CQ o 33 roar into the aucliosystem, and this cannot be eliminatedby any simpleR-C filter. Most filterswhich preventinjection of vr tube noise into the audio systemalso make the vr. tube cirouit subjectte-r R-C oscillation,wirh irr_ teresting.but u'holly undesirable.resrrlts. Ahorrt the only iure way ol silencingthe regrrlatctl squelchcirr'rril is t()replacc thc r'atltotlcresistor of theaudio luhe (R,, fig.2) with a goodchokc (10 henriesor so), and then to rernoveCr and AtrC replace I it with a large (g mf or so) caDacitor DI from cathodeto ground. This is beautifullystable in sonreinstances. Fig.4-The use of q peniode d.c. omplifier in fhe t squelch Fr In others, the vr circuit goes into oscillation. circuii provides greoter omplificoflon plus o t which may ,,e simple sensitivilycontrol in the screen circuif. be curedby useof a killer" shuni it resistoracross the choke,by changing the capaci_ for extremely compact construction.Circuit of I for (C"). by changingthe vr tube, or bv iome a.regulatedpentode-triode codan comprises fig. -! combinationof the above. a Although regulation of the control plate tube With this circuit, the operatingpoint can be -l supply-voltage definitely improves the opera_ shifted through a considerablerange of a.v.c. I tion of the squelch,regulation by use of "onu.n_ valuesby varying the pentodescreen voltage. If h tional vr tubesis not the ans*er becaureof the desired,a switch may be attachedto the sensitiv- a tendencyto oscillation, and constructionof a ity potentiometerto openthe platecircuit of the rr squelchusing the circuit of fig. 2, or simple control tube.disabling the squelchwhere its use t modificationsthereof, is not recommendeclun_ is not desired,as for signalsthat !{ less arebadly down the builder has a competentexorcist at his in the noise. E beckand call. Customarily, the grid of the squelch control Within the last two years, a new type of volt_ tube is connecteddirectly to the receivera.v.c. ageregulator-the zenerdiode, has become com_ line. an entirelysatisfactory procetlure providecl mercially available. This clevice,when used to the total grid to ground resistanceis half a regulatethe control tuheplate supply voltage of megohmor less.When the circuit resistanceis lne codan.performs excellently.introduces ntr higher.contact potential generated by the con- new problem, and permits sonre reductionin trol tube is injectedinto the receivera.v.c. sys- bleedercurrent with consequentcooler opera_ terr. reducing the sensitivity,particularly for tion. ln addition.the zenerdiode. when used weaksignals for whichsensitivity is mostneeded. within its currentratings, and l.rrli urt udcqnutc This evil can be effectivelycured by inserting hcat sittA.is a srrbstantialllimmortal componenl. a high backresistance diode in the leadfrom the which will probahlyoutlast the equipmenlirr receivera.v.c. circuit to the squelchcontrol tube which it is installed.Circuit of a verv saiisfactorv grid, as in fig. 5A. With this arrangement,the dual triode squelch,with zenerdioie reeulation controltube is effectivelyout of the circuit until of the controltube supply volrage. is sliownin the a.v.c.line is more negativethan the control fig. 3. Plateand cathodecircuit constantsof the tube grid, The 4.7 meg resistor from grid to audio tube dependupon the tube "handbook" chosen,and ground provides a grid return for the control values will be satisfactorv. As tube. Without this resistor.the control tube shouldbe apparent.the operatingpoint of the would cut itself off, operating the squelchinde- squelchwill also dependupon the tube used. pendentlyof the a.v.c.voltage. When closeadjustment of the squelchoperat- fContintredon page 88] ing point is desired,with a minimum of loading of the receivera.v.c. system. a pentotle-triode unit is slightly more flexiblethan a dual triocle A,V' squelch.Use of a combinationsharp-cutoff pen- tode-high-mutriode. strch as a 6,4W8A.m;ker

Fig.5-(A) The inserfionof o diode wirh o high bock resistonce in series with lhe q.y,c. line reduces the effecl of contoci potentiql developed ot the grid of V1r,. Fig.3-ln this circuit the squelchd.c. omplifier V16 i5 (B) This circuit ploces the sensitivityconfrol in rhe grid stobilized by zener diodes CR1 ond tR2, both lnter- circuit of Vtr,. (C) A d.c. source con be used lo vory notionol Rectifier 3227's. tho squelch sensitivity over o very wide ronge.

34 r CQ o Jonucry, 1964 I I nheem CalifoneAR-300 Tape Recorder

fllue Rheem Caliione AR-300 tape recorder ' f has beendesigned especially for use by the amateurradio operator.It is a 4-track 2-channel systemwhich includesa number of facilities to provide a high degree of flexibility for in- dividualneeds for which it will do the following: l. Records4 monaural tracks totalling up to 8 hours of continuous recording titne on a single7-inch reel of tape operatedat 33l+inches per second. 2. Records4 hours of steleo on the same sizereel. 3. Plays pre-recorded4-track and 2-track slereotapes. 4. Transferspre-recorded information from to another. one track '|t/z -5. Also operatesat inches per second. Wow and flutter is less than 0'24lo' 6. Providestwo separateaudio power chan- nels. 7. Provides two separatepre-amplifiers of 3,5db gain for use with microphoneto feed the Reqr view of the AR-300recorder shows the simple recorderor a transmitter.High or low impedance ond servicobledesign. input is available.Each pre-amp has separate jacks and later checked for correction or to get arl input and output for externaluse. "fist" 8. Providesfor taking output from a receiver idea how your sounds. i having4, 8, 16 or 500 ohm output impedance. 3. CQ-calling tapes may be made and played .{n adjustablelevel control is providedfor setting back for phone use. recording level of receiver output without dis- 4. Contest operation may be continuously turbing normal listeninglevel. recorded for a log record or other references 9. Allows speakerto be operatedfrom re- purposes. ceiver or recorder power amplifier. ,5. Proceedings of club meetings. dinners, 10. Providesfor erase and demagnetization conferences or other group gatherings may be of tape heads. recorded with the salient points later transcribed into written records. Recorded tapes may also be SuggestedAPPlicoiions used for immediate or later reference for settling If you arewondering how a taperecorder may questionable or disputed statements. be usedto advantagein connectionwith radio 6. Talks or lectllres may be pre-recorded amateuractivities, here are a number of sug- and played back at meetings. Such tapes may also be passedon from club to club. gestrons: I 7. Rare DX contacts may be recorded. l. Code-piacticetapes n-ray be recordedand "Phone-patch" olavedback. 8. type of messagesmay be 2. Your own codesending may be recorded recorded for iater delivery in case the addressed party cannot immediately be reached. 9. ARRL bulletins and other special broad- casts may be recorded for later reference. 10. Proceedings of Civil Defense Drills nray be recorded for use as a guide for operating techniques or for ascertaining the neecl fol cor- lective measures. 11. Correspondence or QSLs may be ex- changed b-v means of recorcled tapes. 12. Another station'stransmission may be re- corded and plal'ed back to the sender. 13. Performance of different receiversmay be recorded for comparison demonstrations. No douht other uses can be found and. of coLrrse.lhe rrstralHi-Fi applicalionsare obviotts. Ihc Rhccnr ( alitortc ,{R=l(X) [ape lecorder' Icrlrrlrs sirnplc upclalitrtr. rtrgged collstruclioll rnd casV ucccsribililt'tor servicing.11 sells lol 152-59.-it)antl is produced by Rheem Calilonc -Bowcroft St., Los Angeles 16. Cal. The Rheem Cqlifone AR-300 4-trqck stereo recorder, Corp., 5922 _W2A EF o versotile unit designed wiih fhe hom in mind.

Jonuory, 1964 o CQ r 35 An RTTY Audio Oscillcrtor

Modifying An Inexpensive Commerciql Kit

BY BYRON H. KRETZMAN'I., W2JTP Fig ore

\pe r had a problem. A good variable fre- P\I quency audio oscillator was needed. Th, ()n Specifically, we needed something to cover the range from about 800 cycles to 5000 t'ra cycles.These are the audio frequenciesof prime interestto the RTTYer, and to the v.h.f. (f.m.) inc operator who is experimentingwith tones and au( filters for remote control purposes.Available ( kit-type audio oscillators are mostly sine and rhe squarewave generatorscovering wide frequency ranges.Besides being more than necessary,and cill the expensive, for our purposes, their dials are Fig. I -Circuit of the oudio oscillotorthqi cqn be built stal crowded over the frequency range in which we into the Heoth lT-12 Signol Trocer. Switch 51 is the are most interested.This makes it difficult to NorsEswitch? removed from lhe signol trocer circuit os ftr I exploined in the text. Copqcitor C, obout 30 mmf, is cor resetto a particular frequencywith a reasonable "P' amount of accuracy. odiusted for o foirly conslonl ouiput over lhe ronge. The solutionwas to build an audiogenerator. o5c One of the first considerationsin building such ing can be bought over the counter.What we na: a pieceof testequipment is its packaging.What were looking for was somethingIike a v.t.v.m. kind of a box should we put it into? Unfor- case.At that point our eyeslit upon a recently ne( tunately,very little in theway of a suitablehous- procured Heathkit signal tracer. Ah, hal That B-1 was the ansu'erlA signaltracer is a very handy all, *RrrY Editor. CO piece of equipmentuhen working with filters, ch: tone oscillators,etc. Wh-vnot combinethe two to items into one ver) compactuseful (and inex- cle pensive)unit?

Modifying the HeqthkitlT-12 I Looking over the IT-i2 SignalTracer, it im- sirr mediatelybecame obvious that, to find room for t'ui the dual sectionbroadcast-type variable capacitor to requiredfor the oscillator,the speakerhad to go. of The next considerationwas the dial. The Na- oul tionalType BMI ($1.10from Barry Electronics) proved to be exactly the right size.It coversthe speakerhole and easily mounts by drilling only three small holes. The dual section tuning ca- pacitor, which must be insulated from the chassis,was mounted on a bakelite plate stood off from the chassisby two metal pillars. The audio output transformer which formerly mounted on the speakerwas found to fit nicely under the tuning capacitor. The tuning eye tube and its bracket was next to go. The hole for the tuning eye tllrned out to be the right sizeopening for a 1tlz-inchsquare

Reqr view of the oudio oscillqlor built into q Heqth lT-12 Signol Trocer, The lwo gong vorioble ir mounted on bokelife lo insulqfe it from ground ond qn insuloted shqft coupler isololes it from the diol. Nofe the I l0 volt cordelqbro bulb to ihe leff of the power trqnsformer.

36 o CQ o Jonuory, 1964

[,, Ir

Fig. 2-Modificolions mqde to the signol trocer circuil ore shown obove. lt consistsof the oddition of feedbqck' speaker.So there we mounted a Calrad Type PM-LV2 miniature speaker.(Who needshi-fi?) The flocked speakergrill was cut down to fit. One of the holes in the chassisfor the tuning eye bracket provided the center for draw-punching (with a GreenleeNo. 730 SocketPunch) a % inch hole for a nine pin socket for the 12AU7 audio oscillator. Front view of the combined oudio oscillotor ond signol Other incidental modificationswere to replace lrocer. A l1/2" speoker is now locoled where lhe tuning the rotary a.c. line switch with a 500 ohm pot eye formerly wos. The Nqtionol diol covers the old sPeoker oPening. (with switch) to control the output of the os- cillator, disconnectionof the binding postsfrom large,output drops off on the low end. We found the signal tracer output transformer; and, in- that 30 mmf kept the output within 0.5 db over stallation of a speakerjack and an input jack "B-1-" the entire range. Open circuit output of the os' for the probe. The red binding post was cillator is dbm. connectedto the signal tracer input and the red *3 Figure two shows the minor circuit modifica- "P" binding post was connected to the audio "CT" tions of the signal tracer itself, made mainly to oscillator output. The black post was con- add feedback. nectedto ground. The panel switch marked NoISEwas discon- Cqlibrotion nected from the probe circuit and wired as a v.t.v.m.(a.c') B-plusoN-oEn switch for the oscillator.Incident- Beforebeginning calibration, a the output terminals, ally, the filter capacitor was dropped below the should be connected to so that the output is chassisby a couple of 3/q-inchlong metal pillars and capacitor C adjusted possible. listening to what to enable the tuning capacitor rotor plates to as constant as Since purpose the tracer, clear. you are doing is the of signal output from the signal generator is coupled-in The OscillotorCircuit by simply connectinga 100K resistorbetween the two red binding posts.Calibration was done by Fig. one shows the schematicdiagram of the also coupling-in the output from a 425 cycle simple feedback bridge-type audio oscillator tuning fork standard,actually the one described built into the signal tracer. Capacitor C is used in Chapter7 of the New RTTY Handbook.By to make the output uniform over the full range adjustingthe relativelevels of the two oscillators of the oscillator. If this capacitor is too small, by means of the panel gain controls, it is very output drops off on the high end, and if too easyto hear the beat notes betweenthe tunable audio oscillator and harmonics from the fork standard. A calibration point then is recorded every 425cycles. On the low end of the scale,ad- ditional beat notes may be heard from 3-times 212.5(637.5) and 5-times( 1062.5).If an oscil- loscopeis availableit is niceto seewhat you are portion of typi- 9 doing, too. Figure three showsa a e cal calibrationcurve. The exactcurve, of course, will clependupon the frequency''rotationcharac- teristicsof the tuningcapacitor used. A neattrick is to mark the dial through the opening pro- videdin the BN{1.at eachcalibration point. You will be pleasedto find out how close you can reset lhe dial to a specific frequency; usually

Drol rvithinjust a few cycles. Total cost, besidesthe for the signal Fig. 3-Shown obove is o typicol colibrotion curve for $19.95 lhe oudio oscillqtor odded to the Heofh Signol Trocer. tracer kit. is in the order of $4 to $5. Not bad With the diol used the resetobiliry wqs excellenl. for a good audio generator,huh? I

Jonuory, 1964 o CQ o 37 CQ Reviews: The Comtran C-II Audio CompressionAmpli{ier

fTltu Comtran C-ll is an audio compression a.nrplifier I which makesit possibleto rajse r_ tne avcragemodulated power of a trans_ mitter without overmodulatingir. therebvnro- viding an addeddegree of signalpunch toieiher with an effectiveincrease in voici intettigiiitity. The unit is a small and compacttransistorizecl devicepowered by a self-containedinexpensive 9-volt transistorradio battery.Installation sim_ ply requires that it be connected between the microphoneand the mic .inputof the transmitter. The Comtron Model C-ll Compression Amplifier is o Circuitry neql ond smoll self-powered unit. Mic iqck is oi ihe No cir"cuitdiagram was suppliedwith the unit leff with the outpui goin confrol ot tire right. The LocAL-0tsTANT qt testedfor evaluation;however, it is a three_stage switch the center cuts lhe omolifier in. or out affair which rectifiesaudio from of the microphone circuii, The oufput coble the output stale with plug is for insertion and feedsit back as d.c, info the mic iqck of the biasfor controllinsthe irq nsmiller. gain of precedingstages. Thus the outputlevel may be heldconstant for a givenoutput potential talk operation is not altered.Instructions are with a wide rangeof input levels.This not onlv furnishedfor modifying the connectionsfor use preventsovermodulation, hut also maintains with other type mic plugsand jacks. ,, uniform output for many voice levels.It also The sizeof the unit is only 4Z.r X 2y2,, X keeps the averagepower high at all times and lVz" and it is providedwith two key-holeslots makesthe working distance from the microphone for convenientlymounting it on the rear of a Iesscritical. Iransmltter. Other deviceswhich can accomplishsimilar A slideswitch on the front of the compression resultsemploy a clipper. but the inherentdis- amplifierenables ir to be cur in or oui of the tortion of such an arrangementusually is con_ circuit. With the switch in the locer position. siderably higher than that of a compression the mic input bypassesthe amplifierand is fed amplifier. directly to the output cable. When the switch Filtering is includedwhich rolls off the fre- is in the DrsrANcEposition, the compressoris quency responseabove 3,000 cycles to limit insertedbetween the microphoneand the output bandwidth and possibledistortion which mav cable. At the same time, battery power is ap- result in splatterbeyond 3 kc from the trans- plied to the transistors and the compressorls mitter frequency. instantlyready for use. A cerN control sets the output to the level Instollqtionond Operolion requiredfor completemodulation of the trans- The Comtran C-ll output cable is provided mitter. Once this control is set, the modulation with a standardshielded three-way microphone will be maintainedat the maximum level over plug which is insertedinro rhe mic jack of the a wide variation of voice-levelinputs without transmitter.The mic input of the unit has a exceedingthe presetdegree of modulation.No standardthree-way mic jack. Normal push-to_ control is provideclfor adjustingthe degreeof conlpresston. Performqnce On-the-airtests, Lrsing a.m. and s.s.b.,indi- catedthat the C-II CompressionAmplifier verv eflectivelyproduces more solid talk power wirh improved intelligibility.especially when usecl during adverseband conditions. It is particularlv helpful for mobile work where powir is genei- ally limited. A noticeableattenuation of the low-freouencv Iespon\eulso contrihUtes gfeatl) towaltl this entl lnrl sontenalrlralness of lhe voiceis lost. brrt thisis o1'little conseqrrence Inlerior considcrirtgtlre othel view of the Model C.ll. The fhree fronsistor benefilstlerivetl. I sloges qre mounled on q smqll printed-circuit boord on ptge 901 ot fhe right. The other round-ended objects ore tiny lCotrtinrrel eleclrolytic copocitors. A 9-volt lronsistor-rodio rScherer, "Factors boilery W. M., in Choosing a Microphone.,' is held in the cover ot the left. CQ, Jtn. 1961,p. 42.

38 o CQ r Jonuory, 1964 A Four BcrndTrop r Tuned Antenncr BY A. D. SINNINGJ.,WI'UYS This orticle describesq lrop anlenna which cqn eosily be conslrucfed by the overoge hsm. The antennais designed{or 75 ond 40 melersond operolesquite well on I5 ond 10 with o low s.w"r.Besf of oll,it is inex- pensivesince if requiresonly seyeralshort lengths of thin woll eleclricol conduil, some # 14 enqmeledwire and q few piecesof plostic tubing. HE average amateur is usually hampered in his operation on the lower bands by the lack of adequate space for antennas. Usuallythere is room, lengthwiseon the lot, for an antennaapproximately 100 feet long. Now. unlessyou are interestedin transmittingon ap- proximately4500 kc this is of very little r-rseto the amateurwho wants to get efficientoutput on /). with lengths This trap antenna is made a few Aboveis the finishedfrqp ofler on opplicotionof epcxy of thin wall electrical conduit, some f 14 for weotherproofing. The epoxy usedond the opplico- enameled wire and a few piecesof plastic tubing. 'tionmeihod is exploinedin the text.

Principlesof Operotion very low, usuallybetween 1.1:1 and 1.5:1.de- The antenna works on the principle that a pending on the placement of the antenna and capacitor and inductor in parallel when tunecl the proximity of nearby objects. to a particular frequency and placed in a line Trop Consirucrion Detoils present an almost infinite impedance to radio frequency current at that particular frequency. Norv f or the construction details. First get about one foot of /2" thin wall conduit and the This is the same principle useciin noise suppres- " sion on mobile receivers to eliminate generator same length of 7+ conduit. Cut each into two six noise. In othel words. a parallel inductor and inch lengths and remove burrs from all edges. "trap" " capacitor the particular frequency and Next get a section of 7r wood dowel stock. act electrically as though the line were ter- Cut into two eight inch lengths and boil in paraf- nrinated for this signal. All other frequencies fin to waterproof it. You will fincl that this will just pass through the trap almost as though it were slip inside the Yz" thin rvall. Now cut a not there. Besides this the inductor acts to effec- strip of polyethylene, such as is used to cover tively shorten the overall length necessaryto get clothes when returned from the cleaners. about eflicient operation on the lower bands. This fact 5Vz" wide and wrap tightly around the Vz" thin 32" can be taken advantage of to build an antenna wall, so as to slip snugly inside the length. :/+" with an overall length of only 108 feet which Leave about sticking over the end of the will give almost as good performance on 75 as thin wall. You now have a tubular capacity a fttll /z wave doublet, as well as being very which can be varied in capacitance by sliding good on the higher bands. Twenty meters gives the tubing in or out. you a higher s.w,r. but for l0 and 15 the s.w.r. is Insert the wooden dowel, which have pre- pared by boiling in paraffin, inside the smaller 'r.q14 ttth nr.* S*uf" fVinneapolis2.1. Mimsota, tube and adjust the capacitance to exactly I00 mmf. This can be done by the use of a resistance lCotttinttedtttt pugc 611

CW Bond0imensiors F"'-1e' f--..0 -+--.,.--l . f-"{ ---r-314---.i 6 l*-2r'--l 6 r-31a r-221 One of the lwo trqps used for lhe qnfennq is showrr obove. The two 6" lengths of conduit ore mounled on o core of poroftin impregnoted dowel. The coil is mounled on q plqslic tube fhot is cenlered on fhe

Jonucry, 1964 o CQ o 39 A picturesque view of the wqters off Agolego. The smoll boqt wos used to houl bofteries bock ond forth fo lhe Morsouin {or chorging.

Uorya4zJo @ BY V. C. HARVEY-BRATN*, VQeHB/VQsBFA

l-r wAsThursday erening. May 30. 1963.This course to Agalega was 17'7" true but I, taking I was to be the second attempt to reach full advantageof this unexpectedcalm, had set I Agalega.Very late in rhe seasonto under- a course152" true and so wasgaining precious take such a voyagein a rather small vessel;for miles to windward.Like this,I hopedto gain an in the ordinary courseof eventsone could be advantageousposition from where I might meet almost certain of meeting a stiff South East anythingwhich the broodingS.E. Monsoon later Monsoon before reaching Agalega. had to offer. Clear of the Seychelles,nevertheless, I found 0700 hours the next day. The scene had only a moderate southeast swell, and only a changed. The sky was overcast and a strong light southerlybreeze. Enough swell,however, to breezewhined through the rigging.Storm Petrels, upset the ship's black cat who was very soon consideredby sailors as unwelcome visitors for sick in the middle of my bunk. Enough swell, they are saidto be the harbingersof strongwinds besides,to spoil my appetite;to dictate a spartan and storms flew about. All plain sail had been supper of hard tack, baked beans,and cofiee. set and now, well up to windward of Agalega,we Hard tack. baked beans,and coffee.The hours were making fair weather of what might have passed. The vessel rolled. I snatched uneasy been a foul breeze. intervals of sleep, while the helmsman steered vq4eq lE ve9HB/MM GEGEoRcE cln cul un 5 s.s.E. ES8 NICEsTG FB wx so RoUGHHARD To coNTRoL Saturday, June l. 1000 Local time. Even THE KEy rELL THE Boys AGALEGA Nw lnr 33 L though a stiff S.E. breezestrums through the rig- MILES ES 208 DEcS TRUE HPE ARRIVE TMw IF I ging the vesselrolls no more. srILL AFLoAT cHEERIo ceox.ce rs 73 I ve4Ae DEve9Hs/N.{Na cr\4 cEoRcE cLD cuA erH 0650 hours, Monday, June 3rd. A ye1l from I NOW COETIVY LEAVING FOR ACALEGA PM TODAY the masthead.Benoit the boatswain had seen I "Agalega vq9an/ur.r DE ve4Ae cooD N,roRNrNc HARvEy Agalega. right ahead." b MAKE GLAD TO THIS CONTACT WAS GETTING ANX- 0900 hours. IOUS YOUR CONTINUED SILENCE YOUR SICNAL IS VQ4AQ DE VQ9HB/MM GM GEoRGE STILL AFLoAT 589 nrnn IN NAIRoBI HARvEy FINE BUsINESS ru un 5 rs 9 rn ALL EXCITEMENT HERE TELL FINE BUSINESS AI,SO YOUR QTH ALL THE BOYS THE BOYS CAN SEE THE BREAKERS ASHORE AT CETTING VERY EXCITED THOUSANDS OF HAMS vq8nre A\!'AITING YOUR ARRIVAL AT AGALEGA 190 miles to Agalega. Before us now, perhaps, ApproochingThe lslond the most difficult part of the voyage. We are Rounding the northern tip of the island one entering an area which seems feline to me; immediately noticesa very prominent landmark. treacherousand uncertain;breeding ground of A black paintedship's mast completewith crow's cyclones. nest and rigging. It standsnear the end of the Astern ls Coetivy ilon-pile jetty, and as I was to discoverlater, is almost 70 feet high. A somewhat melancholy The sunsetwas misty but the sea was calm. reminder, no doubt, of a disasterwhich occurred And later the moon floated like some huge many years ago in the breakers-but, quite tranquil pearl in a cloudlessbut hazy sky. We naturally, the only thought which crossedmy were pushing on at our best speed.The direct mind at that moment was, what a gift for a *Bel Eau, Mahe, Seychelles, Indian Ocean. ham's antennal

40 o CQ o Jonuory, 1964 I entered the anchorageslowly until I could * discernthrough the crystal clear water the white 4 sand and seaweedon the bottom. Then I let go in 5 fathoms. Even though close up to land, as close as I dare go, the ocean swells passingthe protecting horns of the reefs to the north and south of us. meeting in the midst of the anchor- age in the form of uneasy mounds of water, causedour smallvessel to roll and pitch.I could see at a glance that during bad weather-espe- cially with the wind, anything west of south- our position would becomeuntenable. Shorewards,all along the edgeof the reef the swell broke in a smother of foam on jagged coral. The moment hardly seemedfit for a land- Some of ihe equipmenf, botieries, etc. on lhe vine-cov' time to lose, The boys ing; nevertheless,I hadn't ered, sondy beoch qt VQSBFA. were all waiting for VQ8BFA, and moreoverthe weather might deteriorate at almost any time. an east-westdirection. (Needlessto say, no TVI I therefore decided to launch the pirogue and or other similar problems existed). Power was proceedashore. suppliedfrom 12 volt accumulatorsthrough con- It was half tide. Near the entranceto the chan- ventional dynamotorsfor both the transmitter nel we found that we had to contend with the and receiver. fierce current still pouring out from the lagoon. The big snag about this set-upwas that in or- Soon heavy breakersfoamed over the coral on der to avoid continuousdemands on the batteries, both sidesof us. We were now strugglingin the the tx could only be left switchedon during ac- midst of alarming rip tide. Suddenlya huge his- tual periods of transmission.Hence, when the sing breaker reared up astern,and gatheringthe band was open and speedyoperation essential, pirogue on its back, surf-boarded us into the many preciousminutes were lost waiting for the channelat a fierce speed,Then there was an ap- tx heaters to warm up. Again, under these cir- palling crash; a vast smother of water amidst cumstances,the tx could never be worked at its which the pirogue broached-to.We lay almost optimum temperatureand this of courseresulted on our beam on the back of a huge slantingcoral in considerablefrequency drift. (A11 this was head where, as the wave receded,we were left later corrected by separatingthe heater circuit momentarily high and dry. Realizing in a flash and runningit off a separatebattery' The heaters that there was no seriousdamage; that the next rverethen left on continuously,and only the B- comber might fill us, capsizeus, and so perhaps plus power was cut during receive.)But therere- finish us all, we leapt from the boat onto the mained still one other difficulty; owing to the rock and into the surge,and managedby frantic rough weather, no battery charger had yet been shoving to slide the pirogue off just in the nick landed.We had to ferry all the batteriesonboard of time before the next breaker arrived. lhe Mctrsottinevery morning for re-charging,and VQSBFA had started off somewhat inauspi- back ashoreagain later in the day. This deiaywas ciously; and this experience was more than responsiblefor the lossof a considerableamount enoughto convinceme that no attempt shouldbe of operating time. made to land any heavy equipment until the So at 1505cMT, the day of our arrival at Aga- weathermoderated. I therefore decidedto await lega, I switched on and VQ8BFA was on the more favourable conditions, at the turn of the air. A thrill of expectationran right through me, tide, and eventhen, only to ferry ashorethe small even to my finger tips, as I tapped out the first battery rig that day. cQ. OperotionsBegin CQ CQ CQ DE VQSBFA AT AGALEGA Sixty watts was going into the p.a. and the Fortunately there were no more setbacks'And neon was glowing splendidly.The responsewas by 1500hours crar the rig had beenset up ashore immediate,though not overwhelming.No pile up in a small shack convenientlyplaced at the edge but plentyof calls.VQ1AQ, VQIERR, followed beach, and kindly put at my disposalby of the by G8KS. (QSL Manager). all three on s.s.b. the Administrator. VQ4ERR was putting in a terrific signal,but I that most hams will find the rig rudi- suppose burstingthrough came HB9KO. mentary. The transmitter, an old TCS-12, con- vertedto bring it on to the 20 meter band by the GE DR HANS GLD CUA UR RST 589 AT AGALEGA. simple processof peaking up the v.f.o. induct- Even in spite of Robbie, who is burning up ance;broad-banding the v.f.o. and buffer-doubler the shack! plate inductors; and modifying the p.a. output So much to do. Demandson my time onboard and antenna-couplingcircuits. In this instancea the Marsouin. Running and maintainingmachin- 132 foot long wire was brought down to the ery. Charging batteries.Keeping the rig in good shackfrom the 70 foot ship'smast, alreadymen- oDerationalorder. Erecting antennas.Often even tioned.This was end fed, being simply clippedon cooking my own meals-for the culinary de- to the p.a. tank. The astenna was orientatedin partment onboard left much to be desired.All

Jonuory, 1964 o CQ o 4l this was good fun but userlup a lot of operating renrained-the time. breakerpoints capacitor. As this was right inside A.l\{. the the worksand to get at it meant . 5th of June. Constructedtwo prinra_ stripping tive ladders down the engine,I wai reluctant to and scaledthe roof "f th; ;;;1. tacklethe job Spentnrost as the generatorwas on loan. of the morning up there ;;;.;i;; ; Mini-Qrrad twenty-meterbeam. My t.lp.rr i" Conditionsot Agologo rne ground.to whom this operationmeint less Every day from than nothing, consistently . about 0300 cnlr until 0530 sent up p"di; ;l; therewas nearly wrong sequence.Nuts alwaysa fine run of Ws. The and boltsrolled down the truropeanswere and plunged usuallyfound at about 1700 into thesand sorne r*eniy crlr. Ieet:1.:l beneath. i""f The VKs, ZLs and theVEs werehardly ever heard at all. I was forced, for reasonsatieaJy _ Having omitted to don a shirt, my back -N;.;.;:was mentioned,to usethe TCS_12much in t.heprocess of beingcooked to u.ind.. more often than the T-90. But now that tnetessthere was always the compensation the heaters*.r" on of a a separatecircuit the TCS_12put nn: u,9*. I he sparklingsea r.r up an excellent here theMur.rotrirt, performance.However, ndrngto two anchors, at about this time there bobbedin the swell. were co.mplaints;'.VegBFA terms is puttingin a good ".In of radio operation a very ineffective "reaJ alternoon. ,.pea- Iorkable signal,(providecl that one-could A thick hazeof eRN_a real Harvey'smorse)." The particularcomplaint was souper."Towards evening, however, signal began that my dasheswere being clippecl. 10 rasp out, and by l7l5 crrr the veil C.o.gr, of static suggesreclrhat rhe wasslowly lifting. One by YQ+ag, anrennu..luy *1. one,stations started to the villain, but it wasn,t. DreaK ollt. So I change

42 o CQ o Jonuory,1964 :F Amateur Radio and the L963 ITU SparceComrnunicart.ion Confcrence

IJY GEORGtr JACOBS,;,,W3ASK

A. Nr of the nlost impoltant radio com- AmoteurRodio Porticipotion I I mr.rnication conferences ever held took Anrateur radio was well representedat the \-,2 place in Geneva, Switzerland from Octo- conference,and asevents turned out, fortunately ber 7 to November 8, 1963. Convened by the so! The IARU is recognizedas an international (lTU). InternationalTelecommunication Unionr organizationby the lTU. and olicially attended the conference was attended by more than 400 the conferencewith the statusof observer.The delegatesfrom 70 countries who were assigned IARU delegationwas comprisedof the follow- the difficult task of allocating radio frequencies ing: John Clarricoats,C6CL; John Huntoon, for the rapidly developing commttnicalion te- WILVQ; I'er A. Kinnman,SM5ZD; RobertM, quirements of space exploration and utilization. Booth, Jr., W3PS: Williarn l. Orr, W6SAI; The general resr.rltsof the conference are dis- Arthur O. Milne. G2MI. cussed in this month's Sprce CorvrrauNIcArIoNs The IARU is an affiliation of 60 national column appearing on page 64. This special re- societiesof amateurradio operatorsin as many port will discussin greater detail the significance countriesaround the world, and claims to rep- of the conference to amateur raclio. resen!more than 500.000radio amateurs.The Union has two major The Proposol For Amqfeur Rodio tasks: to do everything Documents containing hundreds of proposals possible for preserving nrade by more than a dozen countries awaited the amateur bands, and the delegates when the conference opened on to form the connecting ltox ever, C)ctober 7. None ol tltese docrunents, link between amateurs of including thc proposttls ol tlte U rtited State.s, all countries in scientific, technical and opera- tonteinetl any relerence to utttotettr rudio. On tional matters. proposals, although not the other hand, certain In additionto lA RU representation.there were appeared to be sttbject to clear in their intent. at least 2-5 licensedradio amateursfrom 13 would be the interpretation that space activities countriesamong the 400 delegatesattending the prohibited for services which have not been conference.While havingprimary responsibilities any frequencies for space specifically allocated to their national delegationsin other areas of The conference began, there- communcations. communications.several came to the assistance the possibility that amateur-radio ac- "when fore, with of amateurradio the chips were down." tivity in space might not be permitted in the future, despite the successesof the Osc,qnI and ProposolHotlY Deboted I I satellites. The British proposalto permit amateurspace Perhaps as a move to avoid any misinterpre- communicationsin the 144-146mc band came prohibiting tation that might result in space up for discr:ssionfor the first time in Working for the radio amateur service, the activities Croup 5C on October 10. lt receivedfavorable United Kingdom delegation submitted the fo1- support from some delegations,including the lowing proposal on October il: USA, but seriousquestions were raisedby sev- "ln the band 144-146mc, spacestations in the Ama- reur Servicemay be used,(Reasons: To permitthe use eral other delegationsas to whetherradio ama- of spacecommutrication lechniques by Anatetlrs)." teurs could utilize spacecommunications as a -l'he British proposal was assigned to the Al- practicalmatter. The following were among the locations Committee (Committee 5) for con- more persistentquestions raisecl: sideration. Committee 5 assigned it to Working l. Could radio amateurs really build a satellite? Isn't Group 5C, which also considered frequency this a too complicated and costly undertaking 1or them? allocations for weather and navigation satellites. 2. Who would launch satellitesbuilt by radio amateurs not have launching facilitiesl The Working Croup consistedof delegatesfrom in countries that did require ground stations with pos'ers most of the 70 colrntries attending the confer- 3. Wouldn t this greater than radio amateurs are permitted to hav€ in ence. Observers from the International Amatettr most countries? Radio Union (IARU) and other international 4. How could it be guaranteedthat an amateur radio organizations were also present. satellitewould not interfere with terrestrial communica- tions of radio anlateurswlto did no1 care to participate sr-n,r c.r"r*.--ruu,u, , ?]- in the space experimenl'l The ITU pubtishesirs own monthly magazine entirled The amalettr radio discussions contintled (ottnuni(ations ,/orrrnal, English editions are avail- throtrgh C)ctober ll, beCOming qtlite heated at through subscriptiorl via'Ihe lnt€rnalional Telc- alrte fimes. While several countries continuously cornmunications Union, Editorill OlTice, Place des Nirions. (ienevlr. Ss.illerland. canle to the stlpp()rt of amateLtr raclio, the op-

Jonuory, 1964 o CQ o 43 acceptableto the entire Working Group 5C: (The wording appearsin Doc. 95 Rev., datecl October 25) "In . the bands 144-1l46mc, space satellites may be usecl by the Amateur Service. Such use should be coordinated among national amateur organizations concerned and is_subj€ct ro the provisions of Article 41." (Article 41 of the Geneva Radio Regulations deals with the Ama- teur Service). In addition,the following resolutionwas also part of the proposal, and was passed bv the WorkingGroup: ". taking into account the desire of amateurs to Ln use space satellites for amaleur communications and in l9n light of any recommendation received from the Interna_ vE3 tional Amateur Radio Union, the conference resolves The Honorqble Oren Horris of Arkonsos (right), shown L that the CCIR be requested to study and recommend receiving his membershipceriificote to the Internotionol upon the technical principles on the basis of which such Amoteur Rodio Club of the lTU. John Goyer, HBgAEe, use of satellites can be conducted taking into account TOt president of the club, presenis the ceriificqte to Con_ the use of the band concerned by normal Grrestrial ama_ bou gressmon teur radio Horris, os Ted Robinson, FgRU, club secre- operations,', rhi tory looks on. Congressmon Horris wos in Genevq os During the q course of discussionon this oro- lalc member of the U.S. Delegotion to the ITU Confer- posal. it again became apparent that furiher .l ence on Spoce Communicolions.He is olso Choirmon of information concerningamateur radio had to be the House Commiilee on lnlerslole ond Foreign tral Com- supplied to the conference.On merce.where S. 920, the reciprocol operoting privi_ October 29, the his leges IARU submitted its bill.r-ecently opproved by the Senote hJ, L""n second official conference tran lorworded document. tor rcmments ond finql oction by the House This document,number Doc. 107 mal of Represenlolives. Rev., describeshow amateurshave handled the ..ITII problem of interference in the amateur bands assi position to proposed the British allocation was without requiring regulatory assistance,and for such that no headwaycould be made. It became answeredseveral additional questions that were r irl obvious that the conferencerequired a briefing raised in previous discussionson the conference I on the accomplishments of amateur radio in th! floor. The document also called attention to the con field of space communications,and plans for the Union'sdesire to havea segmentof the 10meter alft future. The chairman of Working Group 5C bandallocated for radioamateur space activities. {: called a temporary halt to the diicussion and and indirectlyquesrioned rhe need for theCCIR as0 requestedthat the IARU submit a briefing paper to studyamateur radio spacerequirements. (The !&a! to the conferenceon this subject.This in^itself CCIR is the technical area of the ITU and is fhe can be considered gic as an important milestonefor responsiblefor studying technical questions of allo amateur radio in the international field, since it an internationallevel in the field of communica- s3t was the first time since the days of Hiram percy tions). t. Maxim h$ that the IARU had beeninvited to nar- At a full Committee 5 meeting on November ticipate c3r( activelyin the deliberationsof an inter- 2, amateur radio was again the subject of long national tma conference! and heated debate. At this meeting, however, Fortunately, the 5, IARU delegationcame well a majority of nations approved Document allo prepared 95 wilh reports, articles, photographs, and agreedto deletethe resolution to the CCIR. ctt: letters, etc. describingin detail the-Oscli ama_ Privately, many delegatesstated that thev took I teur radio ,,night satellite program. The oil,' this action as a resultof the informationmade t. burned brightly in severalhotel rooms in-Geneva available by the IARU in Document 107. The am until the wee hours of the morning as the IARU Committeedid not approvea l0 meter allocation l representatives summarized the Oscen data ror amateur spacecommunications on the basis Sl! into an official conferencedocument. The docu- that no experimentshad as yet been carried out cor g4, ment, bearing the number Doc. and entitled. in this band, and there was no evidencethat anv "Oscen program SpaceSatellite Of The lnter_ were being planned for the future. al national Amateur Radio Union," was circulated On November 5, Document 95 moved into rrth to the conferenceon October 14. the Plenary Assembly of the conference,where ..'. Coincidentally [?], a model of the Oscrn delegatesfrom 70 countriesconvened to discuss beaconsatellite was in Ceneva at the time. and it. The Plenary meetingapproved Document 95, ait was immediately put on exhibition at the Con_ but shortenedit to read as follows: tcu ferencelocation. "In This enabledskeptical delegates the band 144-146 mc, artificial ier to satellites may be see and handle the satellite themselves. used by the Amateur Senice." tre On October 12, the chairman of Workins The Plenary dropped the original wording, ra( Group 5C appointed group "... an atl-ltoc comprisin! . . should be coordinatedamong national am;- delegatesfrom Canada, the USA, the UK and teur organizationsconcerned . . . ,,' since this of the USSR to try to break the deadlock. It ao- was already the function of the IARU. The nal pearsas if the IARU ". documentand the Oscan words, . and is subject to the provision of all exhibit helped accomplishthis, sincea few days Article 41," were also dropped since this was 6: later..the group ad-hoc proposed the following already implicit in the Radio Regulations.The lb. wording which "artificial subsequentlywas found to be words, satellites"replaced the original E-

44 o CQ o Jqnuory, 1964 conlesl

ME'vt sort of combinedour monthly "QSL Contest" with DX Masazine's lf,/ "Drooline V Y Corner." since all cards reo- resenta DXpedition and all r,rereoperated by one gentleman: namely-Gus M. Browning, W4BPD! All cards are two-color thermograph jobs with the exceptionof AC3PT which is four Members of the IARU delegofion to the ITU Spoce Com. and YAlA which usesthree colors on front. municotions Conference discussingo serious poinf with If you (bock happened on one of these calls and VE3ATU to comero) of the Cqnodion Delegotion. you're l. to r.: W6SA|, G6Ct, W3PS, SMSZD ond WILVQ, wondering where to QSL, W4ECI will help via Ack Radio Supply Co., Birmingham 5, wording, "space satellites" to permit moon- Alabama.P.S. Watch for Gus' storvon Aldabra bounce and meteor-scatter communications, in the February issue. which depend on natural rather than artificial satellites,to continuein other bands. As an added bonus,the delegatefrom Aus- 't,l r'*ru&rd.*!,,* tralia announced at the Plenary meeting that i-- : ^oilr rc er :D*.rdo his country had changed its plans to use the 3 band 144-146mc for broadcasting,and would ].i"Jpr make the band available for amateur radio and i Eql FF,,I , ord iir lora p^u

Januory, 1964 o CQ o 45 aat ataaaa aaa a aaaa .ia ta aaatl I .; I : :,r !? :i,"t J\4 ri 'l -'..;: .. . t,.! 'i. * r:; ,?. ! "! I ri ;Ynt'.'. " :Ji: I i ,. i'.: "'"' -;Y i J : -;i -i": B:i: .>r s.5s! o rF.o io-d ;-- , !99' :*:f *F a S"lF ,.;d F' 3 :3!p:p"Y: oaa aaaa I H: a a o a o:a t o a o o aa aa ao at aaa a A $1,000,000High Using UNMC I For QSL's By The ycrd

BY ALOYSIUS J. POLANECZKY'I,,W3EFY "average" EINGan ham, we suffer an af- 0i9 r Posliod flictioncommon to many of our brethren, r23456 789t0I12 This affiictionusually manifests itself in symptomsdisplayed at 2215 cMr on weekdavs 4 Wof(ttloht and I600 cMT on Saturdays.ln the terms of mathematical 4 Wordhput ltam xl statistics-"A strong correlation SuppryingAtl existsbetween the time of symptommanifesta- N.ce3soryInlormdion itl tion and the time at which the affiicteediscovers o! Sincl.OSL 3d that the mailman has not deliveredany eSL's." lq The symptomsconsist of a few words mumbled Frl ''Sentiner" under the breath (after all there are six harmon- SignotinOEid ics present) and a slight flush of the face. onlv infinitesimallyindicarive of themagnitude of rhL inner turmoil. It is surprisingthe amountof dis- Fig.2-lnput no eSL run. The coded informotion is tresswhich can be causedby the non-appearance shown os it seriolly oppeors on fhe eleclromognelic of a certainpiece of cardboard,especiallv when input tqpe. An explonotion of the coded informotion the expectantrecipient is an aspiringceitificate is given in the texi. collector.(Certain hams in the variouscounties The Breokthrough of the first three call areas.how about comins Then, with the unexpectednessof a JTl an- across? ) sweringour CQ, the solutioncame to us! Some- t where, the fates The ProposedRemedy that toy with orrr destinyhad I dictatedthat we be employedat the Franklin In- Now, we are magnanimouslyinformed by the lr stituteComputing Center with a $1.-5million experts(those who have nrore than one out of GI dollar Univac I installationat our disposal.Let three cards answered),that one important af- "Be I thisloyal slave prepare our cards. originall" fector of rate of QSL return is the impact createcl It "Be "Create Certainlywe hadn't seena card of this nature by the card. originall" an impres- "Create ir "Display anywhere. an impressionl"If having sionl" your personality!,'Fine! But QSL cardsprepared by Univac I, the first ..mass; how does one do this? Create your own design? produced high-speedelectronic digital computer, By the time we get past our call and our eTH didn't havethe desiredeffect. we'd earthe ihing, originalityis shot. Createan impression? "Display Sure. diode by triode. your personality!,' We're a big gun. Made if WAS after only five years this didn't createproof positive of operating.Display your personality? of our laziness What, nothing elsewonld. admit that we're lazy? Maybe we could print our own usinga silk screen?Let's face it. we couldn,t Acquisition Of Gront clrawa straightline if we lived in a one dimen- Filled with potomac sionalworld. the enthusiasmof the Valley Radio Club awaiting the opening gun of xSenior Statistician, Computing Center, The Frantlin the annual Sweepstakes,we took the plunge.Our pennsylvania, Institute of the State of philadelphia 3, pa. first job was to convincethe DireCtorof The

46 o CQ o Jcnucry, 1964 QSL's. peedaSL Printer Franklin Institute Computing Center, one Larrl' \tcGinn, that this was a stroke of good fortune for our organization, and w3EFY should not be charged for machine tinre (at 5110 per hour). The implications were staggeringl The name of The Franklin Institute Computing Center would lleh. Z s Nong Oulpul t'e spread world widel Outer Nfongoliai St. He- Tope O. Hrgn lenal Coos Countl . Ne''i Hampshirelill Out' performance would have made Stanislavsky sit up and take notice. For sonrebalting reason, our audience was unimpressed. and even indicatecl that perhaps there just might be a stain of selfish- nessin our motives. (Perish the thought.) But thc decision was favorable. Do the programming Moil oSL Cords Siond on our own time. and keep off the machine when Socl To Avoid Avoloncha Ol a paf ing customer wants on.

Synfhesis Of The Vsccine If the computer coLrldthink for itself, otlr goal sould now have been realized. Bttt for some strange reason all a conrputer is capable of doing Fig.3-"Flow Chort" showingtotol processnecessory "executing the UnivqcI computer. is with blind faith. great reliabilitli to prepqreQSL's using and lightning speed everl' blunder committed by tlie programmer." Therefore, to sttccessfttlly 3 >: -5stock. which, when ttseclon ottr high speed utilize a computer on any problenl, three areas printer, will acconrnrodate t8 lines of informa- must be completely and ttnambiguotrsly definecl: tion. each line 50 digits long. l. What the inpLrtto the contptrter consistsof ; Mustering Lrpevery last otlnce trf originality, l. What is desiredas an output; we decided that the QSL should contain: otrr 3. How the transistion fronr I to 2 woLIld be call. nanre, Q-f H, cotrnty (that should suck in carried out, ttsing paper ancl pencil. given srrf- the replies. there must be less than 1,000 hams flcient time and energy. in our county), date, tirne (clvtr nattlrally), Whether we are built backwards. or whether band, mode, signal report, transmitter. receiver' this particular project was best attacked in this antenna, request for or acknowledgement of (Note fashion, we will not attempt to decide, but we QSL, and call of station worked. the cler'- tackled the output problem first. The preparation erness of this list.) We also decided that there of a QSL card is strictly an editing problem, should be displai'ed on the card an indication making format the primary consideration. There that a 1,500 kilobuck organizationwas tied up are an almost limitless variety of paper stocks preparing the QSL specifically for the recipient. and sizes from which to choose. The fact that (When nothing else works. tr) flatter).) Finalll' there was a large amount of continuotrs 3 X -5 u'e decided to close with the novel. e-ve-catching "73 card stock lying around from a previous job and wittl phrase DE W3EFY." This format, helped define the limits of our output format. once rigidll' defined (see fig. | ). overcame the Since wastefulness is a capital sin, it was only first hurdle. and allowed us to proceed to speci- proper that this excessstock be put to good use. fication of the input. r For the benefit of the Novice, the proper term Certain portions of a QSL are fixed. namely "scrounging.") for this operation is There it was, those portions the printer places on the now

Jonuory, 1964 o CQ o 47 containing: I. Codedinstructions, 2. The invariant portions of the eSL, and 3, The variableportions of the eSL other than the call of the stationworked and the signal report. Item three consistsof words such as Januarv. February.I60, 80. C.W.. phone. S.S.B.,TV (dreamer), PSE, TNX, etc. Item 3 aboveplus the call and signal report are laicl into item 2 aboveas dictated by the codedinstructions, item l. The whole run tapeis read into the computer a_tthe beginningof the run. and operationirom that point on is completelyautomaiic. (See fig. 3 Compuier for a flow chart of the process.) operotor Herb Choplin (left) ond the outhor of QS['s. j.ust Writing of the coding itself is the most eso_ lsne1t _o.strip printed out on rhe High- Speed sustainingportion Printer. Just visible over W3EFy,s shoulder" is of programming.Each line one of the two circuit bqnks which contrcl ihe reoding ol codrngas it is written,corrected, modified or of informoJion from lope ond its printing ""a p"f"ri deletedis a testimonial to the clevernessof the A Uniservo serves os ihe input uJi"l". coder.However. accomplishment must of neces- srly be lts own reward.An explanationof a tricky bit of coding to one's colleaguesusually passe,non-computer manufactured ,.I cards. This brings a typical reply, use that stunt all the norjio.n need not be specifiedin the input for time." Rather than belaborthe readerwith the each individual eSL card, and could be read detailsof Univac I coding,let it be said that, into the computer only once ..run',, for each at conceptually,coding is similar to desisn and the same time the program was read in. Thus. constructionof ham gear.We are merely-clesign_ tle specify lnpu]l_eed only the variableportions rng crrcults to control the flow of of the information. QSL. Here's where lazinessbecomes a This project resultedin three ,,debugging" v.irtue-We shots -wantedto specifythese variable por_ on the computer before discovering tions our coding in asfew digitsas possible.thereby feeding errors and correcting them. to the computer as much information as possibl! per inch of electromagnetictape movemint (the lmmunizoiion Of potient and input outputmedia for UnivacI). The input -Finally successlThere it was, eSL's pouring format.finallyseilled upon is shown in fig. 2. off the computer onto the elictromasnetii The in_pulfor each consistsof a paiket tape at rhe rate of three per piinted . eSL"words." or second. item of four l2 digit strips of QSL's pouring off the High-Speed The first of the four words is devotedentirely Printer at the rate of 33 per minute! The^first to the call of the stationworked. This allows suf_ batch was immediately consignedto the mails ficient spaceto take care of characterssuch as and we settled back to await the avalancheof WA6SOS/ZD7 with a couple of digits to spare. replies. (The A's shown in fig. 2 are spacesand are nor_ mally non-printing.) Relopse How ,,average" The first six digits of word 2 are the date. the did we make out? Being an next four digitsare the time and are self_explan- ham, we suffer an affiction common to many of our brethren. atory. The last two digits of the word are allowed This affiiction usuallv manifests itself in to be either spacesor M's. If spaces,our call on symptomsdisplayed at 2215 cMT on weekdays the QSL appears as W3EFy, or if M's as and 1600 cnrr Saturdays.Some guys W3EFY/M. wouldn't QSL if we gave them a Univac I. pass another platter The first two digits of word 3 specifythe band; of diodes, pleasel They're deli- cious with e.g.,01 standsfor 160M, 02 for gOM,etc. Each horseradish. succeedingpair in word 3 stands for. resoec_ OccupotlonolTheropy tively. mode. transmitter,receiver. antenna and In the meantimewe plan whether a is being requested to continue makins QSL or acknowl_ our cardson edged(usually the formerr. the computer,if you care to havi one, give W3 Egg Foo Yung a shout if you hear Word 4 is devotedentirely to the signalreport, him on the air. (You may also seeone of these and the l2 digits should be sufficientto contain cards from KG4BA if you happenedto work such extremesas 5X9*20leSBAA. These four him with VP9EP at the key. His word packetsfollow each eSL manager, other until all the input W3INH, lives nearby, is completed.This and we ran off a batch is succeededby a word of Z.s. for him.) termeda sentinel.The sentinelinforms the pro_ gram job that the is finished,and the computer Ackn ow ledge me n ls can get back to making money. We wish to thank our colleaguesat the Frank- The problem of transformation of input to lin Institute Computing Center. who have toler- outputcould now be attacked.On the corirouter antly acceptedour enthusiasmduring our work this transformationis controlled "project." by a run tape on this I

48 o CQ r Jonuory, 1964 The Goaxicrltrine Bcrlun BY CLIFF GILBERT*. K6GAX

where an unbolancedcoqxiol frqnsmissionline is usedto feed bolonced syslemssuch qs dipoles,dipole-fed muhi-elementdirective arroys, elc., d line bolonceconverle r shouldbe used.T he outhorpresenfs o brief sum- mory of the theory ond odvctnlogesof a coaxiol line bqlonceconverfer. with this simplyconslrucled unil, rodiotionlosses, due ro unbolqncedline currenls,cqn be morkedlyoffenuofed.

t-f]HE most efficientmethod for the trans- I missionof r.f. energyis over nonresonant I lines.In a two-wiretransmission line each conductor is at high potential with respect to ground, thus creating high currents which florv in opposite directions in each conductor. This high current flow would normally cause the feedlineto act as an antenna.but. the conductors are spacedclose enough so that any radiation is cancelled. The situation is differentwith coaxial feedline. Fig. l-Bolun construction detoils. The lenglh con be the inner conductor being at high potential with determined from the formulo given in the text. The respectto the outer conductorwhich is grounded. spocing ot A should be lrom Vz to I inch qnd should Matching this type of uttbalancedtransmission be held by the use of rigid low loss spocers ploced every 6 inches olong the length of the bqlun. line to a balancedline (or antenna)cennot be accomplishedsimply by connectingto the coax. Assumingequal surgeimpedances for both lines, ling out the capacitivereactance. Similarly, the currentsfrom the balancedline will flow on the equivalent circuit for a shorted line more than outer conductorof the coax causingradiation. A a quarter wave in length is capacitive.With a proper connectioncan be achieved.however, by transmitting frequencyslightly above resonance, "line using a balanceconverter" or balun. the antenna reactanceis inductive. The balun The purpose of the balun is to increasethe would then tend to maintain the existing im- impedance of the outer conductor to prevent pedancevalue by capacitivelycancelling out the r.f. from flowing over it. The balun is essentially inductive reactance. a quarter-waveIine actingas a metallic insulator. A type of balun pertaining to coaxial lines is This shorted, quart€r-wave line will exhibit the detuning sleeveor bazooka.This. essentially, standingwaves when the open end is resonated. forms a secondarycoaxial systemwith the sleeve At the shorted end. a voltage node (minimum) acting as the outer conductor and the outer con- ductor and current loop (maximum) occurs and at the of the coaxial line as the inner conductor. open end, a voltage loop and current node oc- The balun shown in fig. 1, made with coaxial curs. Thus, an extremely high impedanceexists cable. is easier to construct than a sleeve. quarter wavelength at the open terminals and the line acts as a The can be determinedby formula: quarter-waveinsulator. The vector sum of any unbalancedcurrents at the antennaterminals will be zero at the shortedend of the stub thus pre- Lu*,:4L venting these currents from flowing into thc J

Jonuory, 1954 o CQ o 49 Awidebcrnd Filter for the TSA-4 BY WALLACE T. THOMPSONX, K8BYT

Here is o filter fhof broqdens fhe tuning of the 754-4. with the filter describedbelow you csn now copy o.m. on the v.h.f. bonds wirh eose. /t is o lof less costlythsn s brosdband 6kc mechonicolfilter.

7T\t. mechanicalfilter in rhe 75A-i and other I Collins receiversprovides an ideal pass- I band for s.s.b. signals and most owners of these receivers use them more or less ex- clusively on s.s.b. and c.w. On occasions. how- ever, it is desirable to have a wicler bandpass than 3.I kc. Such times are rhe tuning of i.m. signals when such a receiver is used to back uo a v.h.f.conrerter. The rrabilitl of manl 6 ani 2 meter signals being what thel are, exhalted carrier reception is annoying and 3.1 kc single sidebanddioJe detecretlaudio has u pr,rnut',na-ad ft rzzi ness. The eristence of the 6 kc ntechanical filter constitutes recognition of the desirable features View of the filter locoted in the 7SA-4.The Vector socket of a wider passband. The difficulty is that the ot ihe end of fhe cooxplugs into the mechonicql plice of a nrechanicalfiiter is nor comn.rcn\Ln.ale filter socket. \\'ith the need. retaining gain eqLral to the rnechanical filters. A common trick ernploled bv 7-iA-,{ owners The I nrh r.f. chokes are needed to resonate the is to prune a few turns from an ordinary .l55 kc preriousll mentioned 100 mmf capacitorsat 455 i.f. transformer and insert it in one of the me- kc. The l.s nrmf coupling capacirtlr, reducethe chanical filter sockets. The reduction in turns is Ttt degree of coupling between each transformer necessar!.becallse of the presence of 100 nrntf an! and improve the selectivity. A i5 mmf capacitor capacitors across the input and outpllt of the f-d\ has a reactanceof 13.000 ohms al 455 ic. Otr mechanical filter sockets. The filter herein is (() resonancethe i.f. transfornler appears as a small simply an e\tension of this approach. itn! inrpedance and very, little of the signal voltage A single i.f . transformer will generallt. be u cl reaches the transformer. Two stagesof this light found to have gain to spare and be as broad as \a l( cotrpling create the additional selectivitv ob- the proverbial barn door rvhen used in this ntan- lJr served.The shiel,lsides oI the input ancloutput ner. A wideband filter is the desired objective ( cables are necessarily isolated for d.c. b1, the but this is a bit too wide in practice.The poor (rI 0.005 mf capacitors becar-rsethe input carries skirt selectivity allows the passage of nearbl' lh, Br antl the orrtptrtcarr.ies a.v.c. when in use in signals and greatly increases the likelihood of the 75A-4. fr.. cross modulation in the i.f. amplifier stages.Thus Conslruction l.'l it is desirable to exchange more of the gain for tlal The three i.f. transfornrers are easily placed selectivity anrl the lilter shown in fig. I is the fee on a 3 X -5fi" Nlinibox, and result. at the end of 12 th r. inch cables, the filter fits very nicely into an rsi unused The Circuit space in the 7-5A-.{.Recalling that B plus rhr and a.v.c.voltages This circLrit of three cascade i.1. transforrncrs conre in on the shieldsof the \ cables, one should cloes improve the selectivity somewhat while dress the leads carefullv to prevent shorling inside the Vecror p9D plug. "205 Fairway Drive, Columbus 14, Ohio. A cardboarcl insert is clesirable.The plug shield

S.:,

Fig. I -Circuit of q widebqnd filter :- Ior lhe 75A-4. The copocitors less lhqn one ore in mf, greoter fhon one c'1 in mmf qnd qll ore cerqmic.Induclors 1.1ond 12 ore I mh r.f. chokes (No- fionol R-50), frqnsformer f1, 12 ond T3 ore 455 kc i.f.s., (Miller l2-Cl) Fg ond P1 is o 9 pin plug mode by ?or Vecfor (P9D). 3'lt |!f

50oCQr Jonuory, 1964 Fig. 2-Response curvesof the 75A 4 using fhe vorious filters. Curve I --one i-f. lronsformer; curve 2- lhree i.f. lrqnlfornt er!;curvc3 tncchernieqlflller.

is groLrrrdedby conncctinga short thin wire to pin number4 and bendingit over the edgewhere the shield can fits on the base. The input and output coax leadsare l3 and l6 inch lengthsof of ihe compleied mechonicql filter built on o RG.58A/U. 3 x 5% inch Minibox. The two 15 mmf coupling capacitorsare paralleledby twisted wire gimmicks that are usedto adjustthe gain so that it is equalto that of the mechanicalfilter. The transformersmay all be peakedat 45-5kc or slightly staggeredfor a flatter passband.The best choice seemsto be peaking at 455 kc to narrow the passband.This selectivitycurve is shown in fig. 2. Perhapsone might say it is as broad as somefraction of a barn door. In useit is a pleasureto have good quality audio from Inside view of the filfer showing ports plocemenl. Nolice v.h.f.a.m. sisnalsand other a.m. stations. I the lwisled gimmicks used lo odiusl the goin.

A Plugr-InMulti-Crystol Adoptor

THEanrateur who operatesnets (such as MARS ten-crystal socket. and rotary switch to the and CAP) and generalamateur contmunications lrrrcr channel of the minibox. Wire this section has need for both crystal and v.f.o. operation. con-rpletely. con.ring out with four long bare Continualplugging-in and unpluggingof crystals leads (to the ground. ke1,. and oscillator grid and v.f.o. is inconvenientand will eventualll' and cathode in the DSB-100.) When ready to wear out the socket. The adaptor described assemble the two halves of the minibox, feed selectsany of ten crystals and the v.f.o. by the the wires through the pins of the octal plug turn of a switch. mounted in the other half of the box. Pull gently Crystal selectionis easy-ten of the positions on the wires to keep them reasonably straight. of a 2 pole 11 positionswitch accomplishthis. The shaft of the rotary switch was left long The mild complicationthat does arise comes so that it could be reached easily in my installa- from the need to switch the crystal oscillator to tion. l'he parts arrangement is not critical and act as an amplifier.In the DSB-100used at this any practical set up may be used to suit the station,it is necessaryto short out an oscillator individnal transmitter.-W A 2A N U. feedbackcapacitor when using a v.f.o. While this can be done with a special single-deck switch,it is easierto find. in distribtrtorstock, the two-deckswitch shown in fig. l. Wiring is easy.Assemhle the coax receptacle. tt:r_--5

-----i< 5

Fig, I -Circuif of the cryslol-v.f .o. selector switch' W Posiiion l-10 selects lhe desired crystol ond position ll selects the v.f.o. Switch Srr is used fo ploce the cryslol oscillotor in the omplifier slqle but is not neces- sory for oll lronsmiilers. The switch is o Mollory 176-C View of the finished crystol-v.f.o. odopfor thot permils ond the erystol socketo Johnson 126'120-1. swilching of l0 cryslols ond o v.f.o. input.

Januory, 1964 o CQ o 5l 15Meter Coils For The HR0-60 BY GEORGE HRISCHENKOI., VE3DGX

Fifteen meler coil sels for all HRO receivers ore practicolly impossible to obtoinond when ovoilobleore costly.Here ore insrrucrionsfor moking up o 15 rnefercoil sef for the HRO-60using o spore coi, selfrom any HRO model.

I-F you missedthe boat on the l5 meterband- spreadcoil for your lll I HRO-60.don't despair. ANr. R.F. osc -f lf you can beg, borrow or steala coil set for I I I any HRO from the HRO Jr. on up, you can Pri. I 2Yqr 6t I wind your own. Try to get a set with two trim- Jec. I 5 t 4% t ltr/z t, ii" Aiam. mers mounted on each coil board. The set I - converted had only one trimmer C"* SO*f OS-.f 68--f Nl50 and made the - job of alignment more tedious and involved Trim. J none 3-1, t"*f NPo 3-12mmf NPo eri extra work. Figure I shows a pictorial of the I I ] fre finished product. slg Preporotionof Coil-set completing the antennasection the two r.f. sec- lar Clean out the coil tions should set carefully leaving all be tackled. If the coil set used has fin the air trimmers. If two air trimmers there are two air trimmers the layout will have to be sm in the r.f. and slightly oscillator sectionsin your coil set, different than shown in fig. 1. Fabricate \TI remove plates and assemble from one of them to brine it the coils and wire them in. Now ful down mount to a 5 to 15 mmf range. the 3-12 mmf NPO ceramic trimmers on \\'j If there are stiff wire leads U shapedhandles on the coil-set and position them in such a man- in€ they have to be removed and replaced with a ner so you can reach the adjustment screws bolt and sleevearrangement similar to the other through the front of the coil can for alignment HRO-60 coil sets. purposes. The oscillator sectionmust have a hole cut in Coil Preporotion the back of the shield can so that the double The coils are prepared from two lengths of conversion stage will operate. Check the 20 Miniductor stock. A length of #3003 is used meter coil set and notice the position of the hole. for the primaries and a length of #3011 makes Placea pieceof paperon the rear of the 20 meter up the secondary windings. When cutting the oscillator coil and rub your finger over it to get coil sections as listed in the chart be sure to an impressionto use as a template.Need I tell allow enough additional turns to peel ofi con- you to drill the 15 meter oscillator cover with- "l nectingleads. out the coil in it? Install the oscillator coil and mi The construction is simple since the primary the 3-12 mmf NPO ceramictrimmer on stiff wire lor windings are insertedin the secondarywindings and position it so that it can be adiustedfrom the and held in place with a few dropsof glue placed front. his th€ at strategicpoints. The coils are self supporting on the four leads. Alignment un adl Assembly After all the coils are reworked and back in their cans, but not Th Start with the antennacoil first as it is easiest mounted on the front nlate. push them pf( since it doesn't require a trimmer capacitor. into their respectivecompartments. Make sure that the contacts Follow the layout shown in the pictorial of fig. 1 are secure.You may have to shim the front ler and you should have very little difficulty. After of the cans up with card- board lo insuregood contact.Also iheck to see frc *R.R. lI.o #2, Maidstone, Ontario, Canada. that the double conversionpush rod is not catch- Fo -h, Fig. l-Picioriol presentq- (Anl) Coil I {R F] ma tion of the 15 mefer coil conslruclion,The primories 2 r)ei qre cut f rom #3003 sig Miniductor ond lhe secon- ^--n the doriesfrom #301L When dar mounling the primories in |trl /l the secondories. mqke sure the windings run in the some direction. \*KBLJ s 4(ee)z r

52 o €Q o Jonuory, 1964 lnside view of coil boord. The oscillotor oil (AC-4) is on the right. Boqrd on left shows loyoui suitqble for other coils. Note lhqt trimmer C2 is not essentiol ior AC-l since il is ocross ont. trimmer on front ponel.

ing on the edgeof the hole in the oscillator can. S meter reading at the ends of the band and To begin the alignment I used a signai gen- presentno real adjustmentproblem. erator to get as close as possibleto the desired When the alignment is complete mount all frequency. After that I used the transmitter four coils on the frame and checkto seethat the signai and then followed up with the 100 kc coil set slides into place with a minimum of calibrator. Start with the oscillator section; the pressure.Be especiallysure that undue tension large air trimmer setsthe overall range and its is not placed on the finger contacts in the re- job final adjustmentsets the low end of the dial; the ceiver. If you break one off, you have a real small trimmer adjusts the high end calibration' on your hands. Make the trimmer adjustmentsslowly and care- If the coils are sitting too high in the com- fully becausethe kc's changereal fast at 21 mc. partments it will be necessaryto remove the With patienceI was able to achievebetter track- coil board and place three washersbetween the ing on 15 metersthan 20 meters. inside of each coil shielCand the top of the coil The other coils are adjusted for maximum board to drop the coils lower into the can. I

The SuperexModel AP-S HeadPhones

tJtue SuperexModel AP-S headphoneshave r I been designedwith the radio amateur in rnind to provide comfort and lessel fatigue over long periodsof use.They are paddedwith thick high-density poly-foam which gently cushions the ears relieving pressurefrom the reproducing units and minimizing external noise. Separate acliustablecenters give the wearer a custom fit. Those who wear eyeglasseswill find them es- pecially comfortable. The audio-frequency response might be termed hi-fi, inasmuchas it is extremelyuniform from below 60 cycles to past 6 kc. For phone work they make pleasanthigh-quality listening. For c.w. work they lack the harsh resonant characteristicsof many type headphoneswhich may or may not be desirable, since resonant peaksoften can be usedto aid in peakingup c.w' signalsand lesseningQRM. On the other hand, Poly-foompodding ond light weight moke the AP'S the smooth responsediminishes and tends to phonescomforloble for long-termuse.

Januory, 1964 o CQ o 53 New Amqteur Products

t00 Kc Trcrnsislorized Oscillqtor

\/ou can keep your receiver.transceiver and ex- I citer right on rhe burlon wirh this new product of Peterson Radio Company, lnc. With the PR-100 you can check harmonics at 100 kc intervals through I -54 mc. PR guarantees the oscillator for one year, when installed according to directions. Power re- lng qtrirements: l?. v. (1.914 ma. Output is connected to receiver antenna, high side. A ground connection may be used if required. PR-100 is completely wired, ready to install. lt includes a Z-6A 100 kc crystal. Baseis l-7i 8" x 2-13116",and negligiblemounting space is required. Weighs only 2 ounces. $12.95 net. Circle A on page 110. Universcl Auto Ignition Shieldinq Kit

f, couertrr and extensiveignition shielding kit liA for most all automobiles has just been releasetl "Eliminoise," by E. F. Johnson Company. Dubbed the new kit may be easily installed on either 6's or 8's, V or in-line engines. Installation requires only W#ffi the use of ordinary, readily available hand tools, &* w *."6 and the components ntay be easily rerroved for transfer to another car. Included in the kit: cable straps,coil shield, coil wire bracket. filter capacitor', distributor shield, spark plug shields, shielded spark cable, and cable brackets. All parts are chronte plated. Eliminoise #ffir#llrrftf,rllrttlttll 6 cylinder kit, $29.9-5,[3 cylinders, $38.-50.Circle B on page 110. Pocket Type ContcrctBurnisher

A NEw pocket pen-typeburnisher-cleaner is now available fl from JonardIndustrie-s Corporation. Bronx. New York. The tool is quite handy; hlls a pocketclip and is rust-proof. The barrel is chromeplated and the chuck is made of alr-rmi- num. Adjustmentof the bladeis possibleby varyingthe depth in chr.rck.Interchangeable blades are made of hard steelwith an abrasivesurface coating of aluminum oxide which insures minimum contactwear, for efficientcleaning of contactsand relays.Overall length of tool is 5t/2".The P-6 pen with l2 bladesis availablefor fine contactswork, while the P-4 1 with Iree l2 bladesis for industrialheavy-duty work. Both priced are at har $3.90each. Circle C on page I l0 for further details. feu Finger-Tip Wrenches no cor IJvER try to hold a nLrtwith your fingers?This problem has the l', beensolved now throughuse of the new tools shownat the rhi: right. Hexagonsizes 5/32", 3116",7132" and l+" (measured for acrossthe flats) are now avarlablein a new line of Finger,Tip 'N' tlut wrenches,manufactured by the Touch Hold Tool Corpora- or tion of PompanoBeach, Floricla. These tools simply slip on the t ili( fingertip like a ring. Nuts are easilypicked up from the work- s&fre tv iI benchand held into the tool until the nut is properlylocated in S,S. place.'fhesetiny wrenchesare packedin a heavyplastic box and cot relaillor $2.-50per set. Cilcle D on pagcll0 for nroreinforma- $.$ffiffiffi , tion. B.

54oCQ e Jonuory, I 964 The following certificateswere issuedbetween the period from October 6th, 1963 to and includ- ing November5rh, 1963:

CW.PHONEWAZ 191 KP4.AQQ Osvaldo Garcia 493 DLl IP Detlef Missfeldt 1846 \\'gHGP Paul Kent 491 YV5ACP L. O. Rodriguez P. (Lor) 1847 W6AAO R. R. Ntartindale .195 WIGKE Hal Smith 18.18 0N4FU Jules Delsupehe '196 W2ASF V. L. Spoley 1849 W6DAX Arthur E. Bat'l0r 191 UA6FD Alex Podmazkov 1850 W6PBI E. C. Veregge .198 W3PVZ Joseph M. Olnick 1851 W5PW\\/ Charlie Liles .199 VE.]PV Peter Victor Tra\ is 1851 WA6LCK Gino Robert Campioni 500 KIKBI CharlesA. Taylor 185-1 W3WPG Harold C. Ritchey 18-5.1 JA5FQ S. Syono 185_i \,'K2JZ A. S. )lather Phone WPX I8J6 UA6FD Alex Podmazkov 93 W3BNU Oscar A. Hiskey I it57 DJOIK Bill \jielsen 1858 WA2AEI John D. Grimths 1859 W.IGF William S. Grenfell SSBwPx 1860 WoLBB Harris A. Fromhold 149 K4VOF Kenneth Wa1-ne 1861 F]NB Yves Bijault 150 Slt3AZI Stur€ Richtner I86] WA2ELS W'illiam E. Fieldhouse 151 YV5AST -\liredo Leon Leon 1863 0H4NS Heikki Kinnuncn t86r VETPL Dick McQuillan 1865 WSWT Lcster A. Jefferv MIXED WPX 78 JA1BK Kan Kivoshi \{izocuchi ALL-PHONE WAZ 207 \\'6TZD E. C. Drorak 108 \\'guzc J. H. Carnett WPX ENDORSEMENTS 109 woJYw \\ . .\. Peter \\'essel Coiltitrctlt Bund DJ]KS , C\\' .F TWO-WAYssBwAz DLSCiVI ...cw 19I SV5UF Harry Engstrom DL3RK . . \lixed I9: \'E6TP Gene Krehbiel G.THDA . . Mixed E 11 193 IlAtVtU Alfonso Porretta K]KBI ...cw 19+ UAgDT Yadinr V. Kozlov K-IIEX ...cw E14 195 KP.ICL Alicia G. Rodriguez KP'IAOO ...cw ll w.rPvz ...cw W8KPL ...cw ,o cw wPx \\T8RQ ..cw. ''''''21' 489 WIZJJ Dr. AnclrervPeterson w8wT . . . Phone S 490 WA6H RS Hillar L. Raamat ,1-Asia; li-Europei F-Africr; N-n..orth .{rnericr: O- 49I DL3CM Jarosch Gerhard Oceania: J'-SouthAnlerica. fT-\tE SStsHonor Roll is heinglisted fol the I first tinre this lnonth in lhe ux colunrn. I- I am sorry for the delay but there have been problemsin transferringrecords, etc. We have decidedto usethis opportunityto make a few changes.Effective April 1st.1964 there will no longerbe a certificateissued for 50 countries confirmedon two-ways.s.b. The presentstate of the art and the great popularityof s.s.b.make this award virtually meaningless.It is possible for a modeststation to work this many countries tluringa contestweekend or evenduring a week or two of rathercasual operation. The first cer- tificatewhich will be offeredfor s.s.b.operation n,ill be for 100 countriesconfirmed on two-way s.s.b.The s.s.b.Honor Roll will begin at 200 Milos, OKI MP, shown ql the operofing position of countriesand remain at that point as long as OK5SSB, This exofic prefix wos used during on s.s.b. comp meeling where s.s.b.wos exploined qnd demon- 'Box 35, Hazlet, New Jersey077J0. stroted to mony OK homs. (Tnx W2Gf )

Jonuory,1964 CQo55 WPXHONOR NOLL CWWPX W8RQ.... .505 WTHDL ....497 W5AWT ....412 Phone WPX SM3AZI....362 W2VCZ ....320 W9YSX ....622 wguzs...505 0E1FF .....4s7 W5DA .....412 DL2UZ...... 361 WiUbp . 5iA Wsivi'....6ti w?Hliu 68s G3EYN. s03 0K3EA...4!6 wA2Drc . 411 wgwHfvr oos SNslp. 5oi ivzveo.. iia kgtAe 506 wsKPL..648 YU1AG 503 uc_2AR496 w2prD 411 crtpK ooi wrocr 55a viepQQ..ai5 iiitiN. 605 !vl{c q4? W5LGG. . 502 K4TEA... 4s1 Kslzo . 411 wswT.. 580 wSERv i5s i,iAzEohaiS w3bcu. 588 !v24lw.,617 W6yy 502 pM_L-o_u. 4!1 w4DKp...410 c3DO .... ses wsJrN. 55e wronv- aot wgDwb..sti w2Eqs....605 DLTcs . s02 w3PG€ 4qqwlcKu 408 crlHF s27 c3cHE rso r+pus aoi' vi6Yf-... 5i0 w40fM..600 K2CPR.... 501 DL1YA.. 4q0 K4|EX . 408MP4BBW 506 Cizcn .55i ij-Lscp. soqw4svu ..557 w6KG...... 5e6 weSFR . s01 DLeKp {!g K4JyE.....407 wgysQ 47! pirei ...55+WnzSrp . 5oo wsAvD. ..552 W2NUT....571 W2EMW 500 Wql!ry 41e W5AFX. 407 weuzd. 46' 5A5io .. asj kzior joo vtjiAc . 5sz w9ux0....566 W2FXA ...500 w3AYq . {43 w4cKD 407 PAbHBo. q53 wrbnv i5i w-svsu 300 HBeEU. ssi K6CQM....565 K2ZKU 500wouNP ...442 SM5AJR ..406 KeEAB . qso LAsAE 55i w4nii a00iitt/tcx .. 5rs wsolc ....564W2MUM ...49s VK3X3 ...... 439 W4YWX ....404 W6yy .448256tW ...iSO rgnOp .... a00 w2ci" ...5t8 0N4QX....5s6 W3ciy . 495 W.3,BQA. .437 cl3oQR.. 404 c8KS...... 430 VEsBxL.500 bl2i(s. ..5t4 DL1QT...... 552 W1WLW ....494 tAptE 437 Kp4A00....404 c3NUc ...429 SSBWpX WSCVU...2Si cA(S-.. ..52d wlEQ .....54e LA3DB 491 0N-4FU 4gg y!{s-BI. 404 VK6RU. 42r cl6TK-. Z7t K9AGB..5i0 wltJB.....546 0K3Dc ....488 VE3ES ...... 433 ZS4MG ....404 W3AYD ....4r0 w4optv ....481 ti3Es ... . tt4 W-dic-c...509 K2UKQ... 546 SMsCCE..488 WqUMi 429 K2ZR0.....403 FSpr ... +re Mp4aBWq62 KljN ....Z6d KZ-ZXU...SOS wgysx...544 w4Byu ....487 W0AUB ....4?9 W9Dyc ....403 pzlAX ...... 413 HBgTa...... qS2 X2NCe ....205 W+eOy ....505 wecFF s38 w8pQQ..481 !v_?EA 4?q WetHN....403 K2CJN .. 40e esxs-. qso wsniu 202 wsxFo. 5or sM7ry1s534 W4HYW ....478 K5.LtA_ {?q VE6V(...... 403 DL3TJ .404 K9EAB...+g5 WAreU .ZSZWSUMn ...500 w2H0....526 W8|BX ...476 q.[iup +?qV!2F,LD....402 0E1FF 404caAWZ ..q28 DUrpNa ..257 LnsHe'..soo c2cM ...s26W5BUK. 47s w9qqs 4?q cspL....402 wiuop...qoz cSoo- a24lEicv .. i56 D|3CK 4e5 KsAcB. sls wgMcx.. 472v!_L!tg_ {?9 ryt?qBB401 w6usc 400 w3MAc.. qoi csFrrvl. ..25b ,i80 0E3wB JMiw .. ll^rAq 9lg y_3qc_u{gg 42s KeBVR 40r v*-Bqp g86 Wsryt1y19? 11E?AR. ?15 iir'ste's ii| KP4cc 51s sP6Fz. 465 424 wovBQ. 401 ;;;;i iii esNuc ss4 rso.cp qii I{L7MF 424 rTrTAr. 401 Ybi;i; ?91 wsivu lvowo sii ioixn . +oi ;wswt ;;i W-?r:r.{cssg kisHN midi ;6d DJ2KS . sii wzxrn aog 420 vE3rz 401 li;ilil ilA latrf sso w,.* A:l ;/-,Gf ffi W9f9L ;iiii :i; gs+wousc zsz iiiii' ili AYEAE. sruiie JAzrwii;ei 4br HJ$ff'' il3 53iil X33 flXY#J G3Hrw. 418 vEIAE . 400 y:P^J^4;.lZ1 pZiAi . 5,is uixea wpx W9LB3. 19? DI3RK 509W9WIO ...460 |A6BLX . qi8 VEiOI....,i00 p*.,," ....rovKlxG 344 PA0LOU....452 w8!Y 506wewcE .458 K2PF0.... ats vxsKa....q00 csrrN . eooiii3'Bip....5di w+opU ....6s8 ct6TK .... 450 w9DWQ....506 w3BcY ....457 vK3xB ...... 415 zL2cs ...... 400 wsuMR ...363 w-4-R13 ....5i2 oeoo ...... 024 Ht

Jonuory, 1964 o CQ o 57 Bcc Walton, K4JI-D, of Winter park, lcft Oct. 1 must work 8 and Asia anil Oceania nlust wol.k 6. for an I8-month stay in the Republic of Sonrali. Send cards and three lRCs to WXRS c/o The While there he will operate s.s.b.and c.w. using SouthernRio Crande DX Club Box 21g0. por.to a Collins S-line inclLrdinga 30S-1.His probrible Alegre. R.S., Brazil. c:rllwill he r.OlBW. His locarionwill he rhe Islc 'lirp tle Serpenti. (-'hisinraio.Reprrblic of Sonrali. His l5 ()n (lSl- 'I slatesitle rrranagcr-will he WA4FXI:. p. O. he ( otsu,olclRadio ( ontest ( "l.s lub is issrrirrg Ilox 8l l, Orlando, Fla. l)X QSl.s should hc atl- lhc ()n Iop" Awar.tl.lo qrralify.il is necesl p. clressedcilo Paul Srnith ConstructionCo.. O. sary to contact 1,5countries using only the I60 Box 1393,Mombasa. Kenya, EastAfrica.S.a.s.e.. meter band since.lanuary lst, 1960. Applicants lRCs and Somali stamps are all acceptable.(frr.r should send a log copy of the relevant iontacts F loridu DX Report,). with a statement signed by a representatir,eof 9Q5 Congo: Glen, K4RJH. is now licensed as the applicanr'sNalional Radio Soiietv. 9Q5GE. He prefers 21390 kc s.s.b.starting at Stickers uill be issuedfor each additional 5 1500 cvr. The I rig is a DX-100 with a SB-10 countries, and an honor roll published quarterll,. and NC-183D receiver.20 and 40 will also be The fee is 3 iRCs, 50 cents or the equivalent. used. Apply to: Cotswold Raclio Contest Club. 250 9X5 Rrvanda: 9X5MV has been very active be- Gloucester Road, Cheltenham, Glos, Englancl. tween 14010and 1401-5kc. i430 to 1.500cr.rr is preferred. (7'nx WC DXC ). QTHs & QSI Monogers ZD9 Gough Island: At present. Ne.wPJ QSL Bureauis: Aruba Amareur ZDgANI is held ^.Thcq.5!,Buteau. Radio \,_,.ID.. Posr.OffieeBox 27t. San Nicolas, by Rob Johnson of Cough Island whose home AruDa, Neltlerlaltds Antilles- address is P. O. Box 197, Benoni, Tvl, South cE0zr via W4QVJ. Africa. The - _ call sign ZD9AM is rhe call on WTBTH uourd appreuiale any help with lhe present ( Gough Island, and Rob Johnson is the ninth oer. QTH s of NdFU of I96t or a'N8JF of t962. DJOKA . Fred Rekich, postfach 702,8630 Co- son to hold same.Rob u ill rerurn to SoLrthAfiica burg/Obfr, Germany. in April, 1964.He will then collectall cards and DU5SNI via DUICE. EP2AU. Foy E. privette, send his ]^!_t _ G4AAS, ARM- QSL cards in return. If you are awaiting lYl$4c lran. APO 20s, N.y., N.t. E'T3GB,.,. LSI his card, please be patient until April. 1964. (Trr.r sc,\ u._s Aid. APO 319. N.Y., N.Y. HISLC 8ox 8lJ.Santo Domingo. Dom. Rep. zsl AW). HSIB .. Box 1038,Bangkok, ThailanO. ZSSlZS9 Basutoland/Bechuanaland:Peter Avi- HSTI . via W8JVP. KI6BZ .. . .. JurreJuly t96t. See WA6eVR KJ6 don,ZS6BBB, is planninganother trip to Basuto- ex-KLTJDO lony Sntakers. 5222 Tavenor I ane, land (ZS8) and Bechuanaland(ZS9) just after Houston, Texas 7?048. KV4DE -. . ti. D. Wo-€rtendyke. 42 King St., Chris- the firstof the New Year. Usingthe call ZSSZtx lirnsre_djSl. Croix. U. S. Vii in tslands. Z56BBBZSE. Peter will operatefrorn l60Ocrrrr KZ5AF \ta KZ'AZ. KZSAZ .... (;e-grgeR. Spencer. Bor 36?, Albrook on Friday,3rd Januaryuntil the morning of A.F.B.. Canal Zone. LU4FX Tuesday,Tth.lanuary. He will operatefronr ... .. Po* Z?, Santa Fe, S. F. Argentina. MP4QBF- .. . Box.7J..l)ohu. Qtrular. Arobian Gulf. Bechuanalandfrom 1600cur Wednesday,8th PJ5IVIF vta vL.bll,. Januaryuntil the morning of Monday,I3th Janu- TA2BK . .. . via DJ2PJ. T|2SS ... . Box lt(6. San Jose, Costa Rica. ary under the call ZS9Z or ZS6BBB/2S9.All TIoRC ...... P.O. Box 2412.San Jose,C osra Rica TLESW QSLs shouldbe sentdirectly to Peterat p.O.B. . .. via W1BPM. TLSSW...... Syd_ Wagorer, B. p. 302, American 9299, Johannesburg.South Africa. IRCs or Ernba-ssy_.Brngui. Central African Rcp. s.a.s.e.appreciated. Operatingfreqr.rencies UR2BU ... . Karl Kallemaa.Vaike-Trhe l4-t.1-arlir, will be: Estonia, S. S. R. 20 Merers:Transmitting,14,10-5 to 14,345;Listen- VP2KT ...... via W2YTH. ing, 14,255to 14,265.l5 Meters:Transmitting, VP2VS ...... via VE6TP. 21,105to 21,415; Listening, 21,,110 to 21,420. fCctttinrted on pagc l00l 40 Meters:Transnritting. 7098, Listening, 7210. (Tn.rLIDXA). Certificotes r Worked oll KA Districts "Worked A new All KA Districts" Award is re1 being issuedby the Far East Amateur Iiadio League.The requirementsare: 3 cards f rorn uII KA2, and one card from eachof the followins: Jar KA5, KA7. KA8. and KA9. Apply to FEAITL on Award SecretaryAPO ft925, clo p.M. San r Francisco. col ln WXRS Certificqte The WXRS Certificateis issuedby the South- ( ern Rio Crande DX Club of Brazil for coniacts I llr datedJtrne 14. 1961.This is the date the .:lub The ever present Jo, CR6CA, who cqn be found on the bond olmost ony time it is open to Africo. Jo hqs one was organized.South American stationsolher sh cr of the strongest signols from the than Brazil must work 20 Dork Continent ond ap! PY-stations:North will be remembered Americans for his operotion os CR5MA. ,'t must work l2; Africa anclEul.cpe (Tnx W9JJF)

58 o CQ o Jonuory, 1964 | 5 Melers LAST MINUTE FORECAST Although ferver openings are expected to occur this The following is a forecast of day-to-day propaga- )'err than during previotrs perjods ol higher sunspot ac- tion conditions expected during January, 1964.This tivit), generallyfair DX propagation conditions lo many lorecast attempts to predict spe<'ific days upon which areas ol tlre world arc forecast for the daylight hours. openings shown in the Propagation Charts in this Fairl) consistent lrans-oceanic openings should take column are most likely to occur, and the expected quality of the openings. For example, the following place during the month, with somewhat more lrequent forecast shows that circuits rated (2) in the Propa- openlngs on north-south circuits. Openings are expected "good-to- gation Charts are most likely to open with to occur mainly during the hours of daylight. but somc fair" quality (B-C) when conditions are above nor- mav be oi rather short duration. Shorl-skip openings (January "fair-to-poor" mal 9 and 12), and with between approximately 1000 2300 miles quality (C-D) and should be when conditions are expected to be possible normal. Circuits rated (2) are not expected to open on most days of the month, Once the sun sets, on those days forecast to be disturbed, etc. lrowever, l5 meter signals propagated by the regular layers of the ionosphereare expectedto disappearalmost PNEDICTEDDAY.TO.DAY PROPAGATION entirely. 20 Mefers CONDITIONSAND CIRCUITQUATITY Fairly good DX openingsto many areas of the world Above Nonnal Below are forecast for this between tlte Norntql Days Noilnql Disturbed band sunrise and late Days (WWV Da,rr Dcr'.s afternoon periods. When conditions peak, signal levels Prop. (WWV rating (WWV (WWV rnal" be exceptionally strong. Good short-skip openings, Chqrt rqting 5-6) rating tu1tit1g over distances ranging between approximately 750 and Forecqst higher Jan. 1, 5-8, 4) /e"ss 2300 miles, are also expected to take place durjng the Rating than6) l0-11,13, Jan.2,4, tlnn4) daylight hours on most days during the month. Twenty Jan.9, 12 16-1,7, 14-15,18, Jan. 3, 19 21-2'1.2e meters is expected to be the best band for DX during 1t li, thc daylight hours of January. (1)CD.EEE (2) B-C C.D D E 40 Melers (3) A-B B-C C-D D-E (4)AA.BDD The band is expectedto open for DX during the after- Where: noon hours, and remain open to one part of the uorld A-is an excellent opening with strong steady sig- or another until shortly after dawn. During this period. nals. fairly good openings should be possible to many areas B-is a good opening, moderately strong signals, of the world, often with exceptionally strong signals. wilh liltle fading and noise. During the daylight hours good short-skip openings C-is a fair opening, signals fluctuating between slrould be possible between distancesof approximately moderately strong and weak, with moderate 100 and 750 miles. During the hours of darkn€ss,the fading and noise. short-skip range should increase to between 1000 ancl D-is a poor opening, signalsgenerally weak, witlr 2300 miles. During the early evening hours, 40 meters is considerablefading and high noise level. expected to be thc best band for DX openings during E-is a very poor opening or none at all. Jr nuary, 80 Melers Ionospheric rbsorption and strtic levcls are expected ne following is a thrrnrb-nailpicture of h.f. f-I-1 to remain at low seasonalvalue\ during the montlt, re- I band contlitions forecast for Jantrali. sulting in fairly good tlo meter openings to many areas t- 1964. For specific times of DX openings of the sorld during the hours of darkness. During the refer to Ihe DX Propueutiott C/rarl.s which ap- daylight hours. short-skip openings should be possible betueen distances of approximately 50 and 350 peared milee; in last month's column. This month's col- drlring the hours of darkness. openings should te pos- umn contains Sltort-Skip Propagation Clrarts for sible bet$'een distancesof approximately 150 and 2300 January and February, as well as Charts centered miles. Exceptionall) strong signals are forecast during peak conditions on this band. and 80 melers on Hawaii and Alaska. The Short-Skip Charts is exDected to be the best brn(l for DX openirrgsduring the late contain propagation forecastsfor circuits varying e!cDln! ll()UJS. in lengthhelween clistances of .S0unrl ll(X) rrrilcs. I60 Meters

l0 Melers '\ trrDsirlcreblc il)tpr()\(nlcIl is crprrlcrl ilr Propagir, lit)lt c()lrdilr()lr\orr tlrir band during.latruary. Fair t)X ()nl\' !rt ocr'usitrttal DX olrrttittg i! t\lJrr'lc(l dlllil!. rrpcttittgs it( l()rc(r\l l() nlrtr\ iilcts ()f !llr wolld ltr)ril lll( dayliglit lrours, nruirtly lr) srlulhcrn !nd trr)picf,l I lcw lrorrrs altct s(rnd()s,n l() shorllv bcfolc suntisc. rrgialns. (rccasional Sporadic l:, nlctcof-type arrd auroral Shorl-skip openings up t() l-l{)(} ntilcs sh()uld also be !ros- opcllings may also occur to distunccs slrort-skip !rp oI sible during the l)orrrs of darkness. Bccause o1 extremely rpproximately 1300 miles. high solar absorption in this trequency range. even during -llJ0? CI'ilr-StreaaSilreiSpring" Mo. ZoSu: periods of low sunspot activity, ionospheric propagation

Jonuory,1964 CQ 59 generallyis not possibleon 160meters durins the dav- l9l lighthours. While a weaker ionosphereresulted in poorer DX propagation conditions on 10, 15 and 20 the VHFOpenings metersduring the past year, conditionson 40, 80 ar( and 160 metersimproved anl Somemeteor type v.h.f. openingsare likely to considerably.This im- provement resulted from a marked decreasein C:\I occur during the Quadrantids meteor shower ionosphericabsorption hor which is expectedto take place during the first associatedwith a weaker ionosphereand lower solar activity. hor week of January. Sporadic-Eand auroral-reflec- Signals,both DX and short-skip.were noticeably I tion ionospheric v.h.f. shorlskip openings are stronger on 40 meters,and the band openedmore lo also likely to occur during periodsof disturbed frequently "Last for DX, and to more areasof the world than Th propagationconditions. Check the Minute dur- ing previous years, sli5 Forecast"at the beginning In fact, 40 meters was the of this column for the tio daysthat optimum band for DX during the hours of dark- are most likely to be disturbedduring trh January. nessduring the pastyear. A similar improvement, althoughnot as outstandingas on 40 meters,also Pe( the SunspotCycle was observedon 80 meters. The most noticeableimprovement in propaga- spr The SwissFederal Solar Observatoryat Zurich tion conditionsduring 1963,at leaston a relative in reportsmonthly mean sunspotnumbers of 4l for basis,took placein the 160meter band. During me Septemberand 36 for October,1963. This results periods of high solar activity, this band is gen- on in smoothedsunspot numbers of 30 centeredon erally limited to short-skipopenings of no more ber March and 29 centered on April, 1963.The sun- than severalhundred miles during the hours of an( spotcycle has remainedpractically constantfrom darkness. During the past year, however, the October,1962 through April, 1963,dropping less band beganto open regularly for DX as early as ara than 2 numbersduring this sevenmonth period. the first days of September,and continued to lev A smoothedsunspot number predicted of 16 is open for DX more often, and to more areasof for January,I 964. the world than had ever occurred previously. Next month'scolumn will contain a detailed Considerablyfewer ionosphericopenings took analysisof the present sunspotcycle, including placeon the v.h.f.bands during 1963.This prob- predictionsfor its remainingmonths, and for the ably results from a marked decreasein auroral beginning the of new cycle. displays associatedwith the reduction in solar activity. On the other hand, Morgan and Dorothy I963 ln Review Monroel report a continuedincrease in the num- B' t_\ll The past year marked the ninth of the present ber of Sporadic-Eshort-skip openings which oc- sunspotcycle, which began during April, 1954, curred during the spring and summer months of and reacheda peakduring March. 1958.Sunspot the past year. This adds further evidenceto the activitycontinued to declineduring 1963,but at theory that Sporadic-Epropagation increases as a slower rate than during previous years. the solar cycle declines. 1he yearbegan with a smoothedsunspot num- High frequency, or shortwave, propagation ber of 30, and by December,solar activity had conditionsduring 1963were, therefore,generally decreasedto an estimated smoothed sunsDot poorer on 10, 15 and 20 meters,and improved levelof 18.Sunspot activity during 1963 *u. ip- on 40, 80 and 160 meters.There was a greater proximately one-third lower than the level re- amount of Sporadic-E propagation, but fewer corded during 1962,and was the lowest recorded v.h.f. ionosphericopenings during the year. since 1955.Propagation conditions observedon the h.f. amateur radio bands were typical for a Outlook1964 period of low solar activity. The sunspotcycle is expectedto continue its propagation DX conditionson the 10. 15 and declineduring 1964,and the year will be marked 20 meters bands were adverselyaffected by re- by a period of low solar activity.This is expected ducedsolar activity during the pastyear. Except to result in a further decreasein the number of for an occasionalnorth-south DX openingduring 10, 1-5and 20 meter DX openings.Except for an the daylight hours, DX propagation was not occasionalopening during the daylight areasto possible on l0 meters.Fifteen meter DX open- southernor tropical regions,DX openingson 10 ingswere also noticeablyfewer during 1963 as metersare consideredto be unlikely during 1964. previous years. compared to Often, when the Somewhat fewer DX openingsare expectedon band did open, it was usually for much shorter 15 meters during the new year, but openings periods of time and to fewer areasof the world should be possibleto many areas of the world periods than during of higher solar activity. during the late fall. rvinter and early spring propagation DX conditionson 20 meters also months. When 15 meter openingsdo take place, poorer became during 1963,but to a lesserde- they will most likely occur during relatively short gree than on 10 and 15 meters.Despite a con- periodsof time from a few hours before noon to siderablereduction in late afternoon and early a few hours after noon. Not much changeis ex- evening openings,the band, however, did open pectedin 20 meterpropagation conditions during to many areasof the world during the daylight "50 hours.Twenty meterswas the optimumband for rMonroe, Dorothy and Morgan, KTALF and K7ALE, Mc Propagation Effects, Mid-Point Report On A Six- DX during 1963 from shortly after '1962, sunrise Year DX Study," Page 37, June, CQ. A report on through the late afternoon hours. 1963 observations will appear shortly in this column.

60 o CQ o Jcnuory, 1964 1964.Although theremay be fewer DX openings, ALesre To: the band is still forecast to open to almost all Openings Given in Alaskan Standard Timefi areas of the world between the sunrise period and the early afternoon hours. Twenty meters is expectedto be the best band for DX during the hours of daylight, and through the early evening hours of the summer months. On the other hand, DX conditionsare expected 07-08(l) 08-10(2) to continuetoimprove on 40, 80 and 160 meters. l0-14(1) The improvementon 40 metersis expectedto be 14-16(2) ( 1 slight, and for the most part, propagationcondi- 16-17 ) tions this band (l) on are expectedto be similar to (2) what they were during 1963.Forty metersis ex- (1) pected to remain the best band for DX during (1)i the early eveninghours of the fall, winter and spring months, and during the hours of darkness Hlwerr To: in the summer season.A considerableimprove- ment is expectedin DX propagationconditions Openings Giren in Hqwaiian Standarul Timefl | 10/15 | 20 | 40 | 80/ 160 on 80 meters. This improvement has already Meters M eters I Meters I Nleters I I been noted during the last months of 1963, l-l Errtern 06-07(l) I 04-06(l) | 17-19(1) | 19-21 (1) and it is expectedto continueduring the new usA r)7-il (2) I 06-08(2) j 19-21(2) l 2r-0r(2) year.DX openingsare expectedto be more num- ll-12(3)108-12(1) l2l-00(3) L 01-03(1) , l2-r3(2) l2-rs(2) I 00-03(2) L23-03(1)f erous on this band than ever before, and signal 13-15(1) ls-r6(3) I 03-04(l) I levelsare forecastto be unusually strong dLrring I I 16_17(2) | l 17-1e(1) lContinuedott page90f I | I c.n""r,or-r:)entralr 08-13rD-(1)* 064?06{7 (l)(D iil}lxlil 1}19 (lt 19-20(r) USA 0607 (1) 07-10(2) I 19-20(2) 20-22<2) 07-08(2) l0-r3 (l ) 20-03(3) 22-Or(t) CQ Sxonr-SrIp PnopecerroNCnlnr I 08_14(3) L13-14 (2) I 03-04(2) 01-03(2) | 14-16(2) i 14-16(3) | M-06(1) 03-05( 1) Jcnucry-Februcry, 1964 1l6_17 (1) | l6-18(2) L 0044(1)t Band Openings Given in Local Stqndqrd Time I l8-1e(l) | Ar Pers Mro-PorNr (24-HouRTlrr,rp Sysreu) Westernl10-15 (l)* | 06-07(l) | l6-t8(1) rsrotD usA 106-07(l)107-08(2) l18-19(2) 20-22(2) I 07-08(2) I 08-10(4) t9-22(4) 22-04(3) loR-14(4) I 10-14(3) | 22-02(3) 04,05(2) I 14-15(3 ) | 14-16(4) | 02-04(2) 0s-07( 1) I rs-tr rz) | t6-17(3 ) | 04-09(l) 22-05(1)i I r6-r8(r) I 17-18(2) i | | 18-21(1) I

Forccast Ratirrgs The numerical ratings appearing in parenthesisfollow- ins each Dredicted time of opening indicate the total nu-mber of-days during each month of the forecast period the opening is exp€cted to occur, as follows: (1) Less than 7 days; (2) Between 8 and 13 days; (3) Between 14 and 22 days; (4) More than 22 days. On the Shorl-Skip Propagation Chart, where two nu- mcrals are shown tithin a single set of parenthesis,thc first applies to the shorter distance for which the forecast is mad6. and the secondto the longer distance. For the specific days of each month on which a particu- lar opening is most likely to occur, as well as a day-to- forecast of reception conditions (signal quality, day "Last noise and fading levels), see the Minute Forecast" which appears at the beginning of this column. Ajl times are shown in Local Standard Time, using the 24-hour system. In this system midnight is shown as 00. while 01 is 1A.M.,02 is 2 A.M., etc. Noontime is shown as 12, while 13 is 1 P.M., 14 is 2 e.w., etc. The CO Short-Skip Propagation Charts are based upon a c.w. eflective radiated power of ?5 watts from a half- wave dipole antenna, a half-wave or higher above ground. The Charts are valid through February 29, 1964. These forecasts are based upon basic propagation data pub- lished monthly by the Central Radio Propagation Lab- oratory of the National Bureau of Standards, Boulder, Colorado.

*Possible 10 metcr openings from Hawaii. iPossible 160 meter openings from Hawaii and Alaska. :l:Aiaskan Standard Time (from Skagway to 141 degrees $est longitude), is 4 hours behind Esri 3 hours behind csr; 2 hours behind Nrsti I holjl behlild psr and 9 (4) le--rl{l-l) 0l (l l) 19-05{{) I ll-04 I ll hours 1)dllrldcMT. {}5-07(.1-2)l 04-05 (4-.1)l:l-0.+ {4-.\) ul-{)Jrl) 07-09(2-l)l 05,0? (2-1)l 04-05(3-l) 0.1-04(-t-:) I Hauaiian Standard Time is 5 hours behind Bsr; 4 hourri 07-09(l-0)l 05,06(l ) 04-0s(r-l) behind Esr; 4 houts behlnd csT; 3 hours behlnd r.{s'ri I 06-08(1-0)l 05-07 ( l-0) 2 hours bcllin.l PsI and l0 hours be,hind cMT,

January, 1964 o CQ o 6l CONTEST CALENDAR

page CALENDAR 84 of the August, 1963issue ot CQ. OF EVENTS Your logs should be postmarkedno later than Jauuary .1-5 ARRL VHF SS FebruarylTth and Eo to: CQ, Att: 160Contest, .lanuary :5-26 ( O WW 160 300 West 43rd Street.New York, N.Y. 10036, January :5-:6 REFC.W. January 25-27 New Mexico Partv February 8-q ARRL DX Phone REF February 14-16 QCWA Party February 15-16 BERU c.w. February 15-11 Vermont Party Starts: 1400cvr Saturday.January 25 February 22-23 ARRL DX C.W. Feb. 29-Mar. 1 YL/OM Phone Ends: 2100cur Sunday,January 26 Feb.29-Mar.1 REFPhonc Phone March 7-B ARRL DX Phone March 14-15 YLIOM C.W. Starts: 1400cr.rr Saturday,February 29 March 21-22 ARRL DX C.W. Ends: 2100 cnrr Sunday,March I March 23 Pakistan DX April 11.-12 CO WW DX SSB The schedulefor the FrenchContest has been changedthis year and thesedates will probably CQ World-Wide 160 be retained for future contests.Unfortunately Starts:0200 cur Saturday,January 25 the c.w. sectioncoincides wjth our 160 contest; 9 p.tu. rsr Friday, January 24 this is goingto costthem someactivity as many Ends: 1400 cur Sunday, January 26 contest minded operators will be concentrating 9 l.r.r. Esr Sunday, January 26 on the top band. No changein rules. Following repeat from Rules are practically the same as previous last month'scALENDAR. years with one exception. The multiplier will L This is a c.w. contestonly. now be determinedby the numberof Frenchde- partments 2. For W/VE/VO stations; contacts with worked on each band. (Previously la other W/VE/VO stations,2 points per the provincewas usedas a multiplier,a confus- of QSO. qrrcnoemenf Contactswith othercountries, 10 points perQSO. ino ) hz 3. For all other countries;2 points per l. The usual serial numbers,RST or RS re- al QSO port plus progressive lvith stationsin the samecountry, 5 points per a 3 digit QSOnumber start- sh ing with 001. QSO with stationsin other countries.Except for contactswith W/VE/VO stations,which will 2. French stationswill give their Department count 10 points. in the form of a numberafter their call for mul- to tiplier (i.e.: 4. For all stations;a multiplierof one (1) identification F8TM/78). Stations Pe outsideof France proper for each state, Canadian province or foreign of coursedo not use {l countryworked. this Departmentidentification, their prefix will iclentifythe DUF coLrntry -5.Final score: Total points times the total for the multiplier. multiplier. 3. Each French departmentor DUF country (excludingF and FC) worked 6. Serialnumber; RST report plus a progres- on each band, countsone in your muitiplier. sive contact number startingwith 001 for the 4. Each first contact.(W2EQS 579001NJ). completedcontact counts 3 points. 5. Final scoretherefore will be the Hawaii and Alaska will be consideredas total QSO "foreign points times the total countries" for and multiplier multiplier from each QSO band. credit.And the District of Columbia will count Scr 6. Certificatesto the sameas Maryland. highestscorer in each nt( country and each W/K and VE call district. Certificatesto the'fop station in each Statc, do F.xtractsfront your log can he appliedfor ( erra,l.ianprt,rinec untl lirrcignc('Ltntty. any evl ol' the Frenchuwards. l.og cleditshowever ar0 Log slreetsas wcll as a copy of lhc new 16{) for only valid lot n nraxirntrlr()f 2 ycars.Youf nreleI LtpclatingIcgulali0r.rs aIe availaLrlef|orrt luwat-clslpplieatiotts go lo l19ll-( t)tli,)- lr.l:/-t, ( for- a self atldr'cssedstarrrped envelope. vo Q (DPF)-F3JI (l)l)liM) and trSI:A(D'IA). (I-argesize please). Or you can check back to rnl Your contestlogs go to: Reseaudes Enrettcufs *14 Road, Sherwood Stamlord, Conn. 06905 Francais,BP. 42 01, ParisR.P., France. vor

62 o CQ r Jonuory, 1964 Poised for the CQ 160 CL,qrlrroSconrs meler confesl of the end of this month, W6YY l9{t-} CQ I'JtW Phont' DX Ctttttc.tt sendsus this shot of his lwo hqlf-woves in SinstEOperqror yVl(jB 91.44() phose. The 450 foot towcr All Band W lZlV 77.o64 is an lop of Mounl ) \ | lw ()5t{.1(x)sM54t\t 74.5:') Wilson. Thot's righl, we KlHLtr :rl4.t5t 1]/,3Y 5e.160 sqid 450 feelll WA2SFt, 2t{9.tt35 W3J fC .59.I ll{ yV5BIG 240.352 (N8Aw 45.2t1 W4BVV 102,360 II2AR 38._s5l JAI FSL t00.30; KA2Bw 16.565 wlTMZ 194,580 7 Mc 60lwF 165.049 SL6BH . t3 t.408 W3PHL 10,980 pJ5MC 125.952 K6AHV 8.188 Gs7T 121.342W8JIN. 4,180 28 Mc 3.5 Mc LUIDAB 95,353 GI3CDF 16,092 sM5GZ 8.4ls 2l Mc wl RIL .59,373 Multi-Operqto! zs6NM . 50,800 Single Xmtr W.+RLS. . 30,889 W0NFA 389,902 ET3USA .389,844 14Mc W8NCO 151.87 4 HL9KH . 318,960 VPTNS 306.075 Multi-Xmtr G3FXB 270,000 K2CL 9-s6,868 KH6EKO 120.530DJ3VM 605.710 date and time in cNlr; contact number: station K2HFX 118.8049,{tAIJ 146.145 worked; RST or RS report; QTH; name and QCWA membership number. The activity will be found on these fre- New Mexico Porty quencies: :: 5 kc C.W.; 35.10.36-55, 3790, 7005. Starts:1500 cMT Saturday. Januar)'2-5 7030,7100,1,1 100,2t110 & 28[0 kc. A.M.; Ends: 0300cvr Monday,January 27 3810. 39-50,7230. 14240.21340 & 28690 kc. '1299 S.S.B.; (l.s.b.) 3804. 3999, 7204 & kc. Rulesfor this populal stateparty appearedin (u.s.b.)I4300,21410,21440 & 28690kc. RTTy last month'sCrlrNo.tn. No mention was made ( if any.)7 t05 & I I t40 kc. of 160operation but sinceNew Mexico stations Your logs should be in the mail before the havethe advantageof beingpermitted to operate end of the month and this year they go to: the all four sectionsof the 160 meter band. thev QCWA chairman: Walter Knighr, K6GMA, shouldnot passup a good thing. How aborit 13841 McMains St., Garden Grove, Calif. gettinginto our 160 contesttoo? Vermonl Porty Mailing datelineis Febrr.rary29th and logsgo to: CHC Chapter 1, New Mexico, c/o Willie Starts: 2300 cvr Saturday, February 15 Petty, W.5LEF, 3107 MorningsideDrive N.E.. Ends: 0300 cvr Monday, February l7 Albtrqerqrre,New Mexico87110. The Central Vermont Amateur Radio Clirb has organized this Party to give all those QCWA Porty QSO interested an opportunity to work the com- Starts: 2200cur Friday,February 14 paritively rare state of Vermont for the nranv 5 p.M.Esr Friday,February 14 state and county awards. ExcueNcr: Vrrnr,,rtt Ends: 2200cvr Sunday,February 16 stotions; QSO number, RS/RST report antl 5 r'.1r.Esr Sunclay, February 16 county. All others; QSO number, RS/RS-l- and ARRL section or country. ScontNc: l/(,nn()nl This year's party is being sponsoredby the stotio,ts:I point per contact and nrLrltiplytotal SouthernCalifornia Chapter of the QCWA. Only by the number of ARRL seclionsand lirreien plaque members are eligible for the QCWA corrnlriesworked. All tttlttr:; l point: par a,,ch donated by the National Headquarters.How- Vermont station wolked ancl multiolv total bv ever,CHCers are invited to work QCWA stations lhe nunther of Velnront corrnlie:w.ir[eJ. for creditstoward their own awards. Contact credit with the same station on dif- There is no point scoring or multiplier in- ferent bancls will be given, and there are no volved,just seehow many QCWA members-vou power restrictions. can work. Arv.r,nos: (a) Certificates to the highest scor- To nrakeit easierfor the judgingcommittee, ing station in each ARRL section. (There was your log shouldshow informationin this orcler: lContinttcl tsttlnge 941

Jonucry, 1964 o CQ 63 4

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irl)-7 ?9o0-7

It-: -8

tl:5-l{ S the clock in the old town of Genevastruck 10,003-10,005kc Space research service on a shared midnight on November 8, a new era in basis. g{)0-8 15,762-15,768kc Space research seryice on a shared communicationsbegan. At that moment, basis. representativesfrom the last of the 70 nations 18,030-18,036kc Space research service on a shared l{..t-1. attendingthe SpaceCommunications Conference basis. t5.15- 19,990-20,010 of the International TelecommunicationUnion kc Space research service on a shared ll-.1t.: basis. -1I .lt-3: aflflxedtheir signaturesto the Final Acts of the 20,007kc (+ 3 kc) May b€ usd, in emergency, in the jJ.:-3: Conference.The Final Acts contain the results search for, and rescue of, astro- of this five week conferencewhich succeededin nauts and space vehicles. 30,005-30,010kc Space research and satellite identi- allocating frequencies,for the first time, to the fication, shared. various spacecommunication services. On Janu- 39,986-40,002kc Space research, shared, In ary 1.,1965, the Final Acts will officially become 136.00-137.00mc Space research (telemetering and locati tracking ) . impor a part of the International Radio Regulations. 1.17.00-138.00mc Meteorological satellites, space re- the basic document governing the operation of search (telemetering and tracking) mend radio throughout the world. The Radio Regula- and space servie, the d 143.60-143.65mc Space research (telemetering and confe tions have the status of an international treaty tracking), shared. Space so far as the United Statesand most other coun- 144.00-146.00mc Radio amateur space activitiesl. carth 148.25mc (+ 15 kc) Spac€ telecommand, shared. tries of the world are concerned. ti(jn s, 149.90-150.05mc Radionavigation satellites, exclusive. Every spacesatellite or spacevehicle launched, re-trilr 154.20mc (+ 15 kc) Space telecommand, shared. fectior whatever its purpose, is dependentupon com- 183.10-184.10mc Space research, shared. SA I T€I municationsfor its link with the earth. The con- 267.00.273.00mc Space (telemetering), shared. spnere ference, attended by more than 400 scientists, It will be in the above bands that space listeners and l:arth radio amateurs engineers and government officials from 70 will be able to here signals from satel- c ith er lites launched in the future. It is expected that satellites countries, discussed all facets of radiocom- \rr (ln launched by the United States will make greatest us of Sgac€ munication between earth and space, and be- the bands 136-137 mc and 137-138 mc. while satellites .n obj greatest tween space vehicles. After five weeks of dis- launched by the USSR will make use of the h.f. has b( bands and the band L43.G143.65 mc, for telemetering mospll cussion and negotiation. the conferenceagreed and tracking purposes. radio Space to allocatefrequency bands in the crowded statior spectrumto servespace communication require- U.H.F.,5.H,F. ond E.H.F.Allocotions aertatr mentsfor at leastthe next generation.A total of The following allocationsin the higher regions (lf lhe nearly 6,100 mc have been allocated for the Comm of the frequencyspectrum have also been made: cJilh I variouskinds of spacecommunication services in tne ex discretebands between 10 mc and 35.2gc (a gc, 399.90-400.05mc Radionavigationsatellites,exclusive. !f,r! tc€ (mainte- or gigacycleis equivalentto 1,000mc). The suc- 400.05-401.00nrc Nleteorological satellites lr\ e sa nance telemetering), space re- mobil€ cessof the conferencehas beenhailed by experts search (telemetering and track- from s as a great step toward the eventualdevelopment ing), shared. Comm (telemetering), of communication. weather and navigational 401.00-402.00mc Space shared. tn the 449.'75-450.25mc Space telecommand, shared. well permitting expanded Comm satellitesystems, as as 460.00-470.00mc Meteorological satellites,shared. in the spaceresearch and exploration, both mannedand 900.0G.960.00mc Space research, shared. lire, unmanned. 142'l-1429mc Space(telecommand),shared. .{ cliYe 1525-1535mc Space (telemetering), shared. tended 1535-l540mc Space (telemetering),exclusive. qnd V,H.F.Allocofions signa ls H.F. 1660-1670mc Meteorological satellites, shared. Passivl The following h.f. and v.h.f. bandsallocated 1690-t700mc Meteorological satellites,shared. rSdroci 1700-1710mc Space research (telemetering and track- to variousspace communica- Satcllil by the conference ing), shared. r iding tion servicesare of specialinterest to readersof 1770-1790mc Meteorological satellites, shared. rc t ive (telemetering this column since these are the bands that can 2290-2300mc Space research and track- Space ing, deep space), shared. be receivedby radio amateursand spacelisteners iralt r or tecl 'A report devoted entirely to the results of the with a minimum of equipment. special lroadr conference as far as amateur radio is concerned appears :ignals *11307 Clara Sfeet, Silver Spring, Md. 20902 on page xx.

64 o CQ o Jonuory, 1964 3400-4200 mc Communlcatlons satellites (satellite- or transmitted by reflection from objects in orbit around earth), shared. the earth. are intende.d for direct rec€ption by the gen- rf400-4700 mc Communications satellites (satellite- eral public. earth), shared. Radionavigation-satellit€ service-A service using space 5150-5255mc Space research, shared. stations on earth satellites for the putpose of radio- 5670-5725mc Space research (de€p space), shared. nayigation, including, in certain cases, transmission or 5715-5850mc Communication satellites (earth-satel- transmission of supplementary information necessary for lite), only in Europe and Africa, the operation of the radio navigation system. shared. Mcteorological-satellit€ s€rvice-A space service in which 5850-5925mc Coinmunicalion satellites (earth-satel- the results of meteorological observations,made by in- lite), only in Europe, Alrica and Asia, struments on earth satellites, are transmitted to earth snaleq. stations by space stations on these satellites. 5925-6425mc Communication satellites (errth-satel- Space telemet€ring-The lite), world-wide, shared. use of telemetering for the trans- mission from 7150-7300mc Communication satellites ( sat€llite- a space station of results of measurements made in earth) . exclusive. a spacecraft, including those relating to the functioning 7100-7750mc Communication satellites,shared. of the spacecraft. 7900-7975rnc Communication satellites (earth-satel- Maintenance space telemetering-Space telemetering re- lite). shared. lating exclusively to the electrical and mechanical con- 7975-8025mc Communication satellites (earth-satel- dition of a spacecraft and its equipment together with the lite), exclusive. condition of the enyironment of the spacecraft. 8015-8400mc Comnrunication satellites (earth-satel- Space tel€command-The use of radio:o:nmi nication for lite ). shared. the transmission of signals to a space station to initiate, 8.100-8500mc Space research,shared in Africa, Europe modify or terminate functions oi the equipment on a and Asia. exclusive in the western space object, including the space station. henlisphere. Space tracking-Determination of the orbit, velocity or 14.3-14.4gc Radionavigationsatellites,exclusive. instantaneous position of an object in space by means of gc 15.25-15.35 Space research,exclusive. radiodetermination, excluding primary radar, for the pur- 3l-31.3gc Space research,shared. pose of following the movement of the object. 31.8-32.3gc Space research, shared. Deep space-Space at distances from the Earth equal to 34.2-35.2 research, Ec Space shared. or greater than the distance between the Earth and the Moon. Orbit-The path in space described by the enter of mass Inlernqlionol Spoce Definitions of a satellite or other object in space. In addition to the above listed frequency al- Angle of inclination of an orbit-The acute angle (less locations,the conferenceadopted a number of than 90 degrees) between the plane containing an orbit and the plane of the earth's equator. important definitions, resolutions and recom- Period of an object in space-The time elapsing between mendations.The following is a partial listing of two consecutive passages of an object in space through the definitions agreed to internationally at the the same point on a closed orbit. conference. Altitude of the apogee-Altitude above the surface of the Earth of the point on a closed orbit, where a satel- Space service-A radiocommunication service between lite is at its maximum distance from the center of the earth stations and space stations, or between space sta- Eart h. tions, or between earth stations when the signals are Altitude of the perige€-Altitude above the surface of re-transmitted by space stations, or retransmitted by re- the Earth of the point on a closed orbit, where a satel- flection from objects in space, excluding reflection or lite is at its minimum distance from the center of the scattering by the ionosphere or within the earth'satmo- Earth. sphere. Stationary satellite-A Earth station-A station in the space service located satellite, rhe circular orbit of which lies in the plane of the earth's and which either on the earth's surface, including on board a ship, equator lurns about the polar or on board an aircraft. axis of the Earth in the same direction and with period Space station-A station in the space service locatcd on the same as that of the earth's IOtatlon. an object which is beyond, is intended to go beyond, or Spacecraft-Any has been beyond, llre major portion of the earth's ai- type of space vehicle, including earth mosphere. satellites, deep space probes, whether manned or un- SDacesystem-Any group of co-operating earth and spacc manned. stations, providing a given space service and which, in One of severalimportant amendmentsto the certain cases, may use objects in space for the reflection Radio Regulations adopted by the conference of the radio-communicationsignals. deals with ceasing radio transmissions fron"r Communication satellite servic€-A space service between "space carth stations,when using active or passivesatellites for satellites.The amendmentstates that sta- rhe exchange of communications of the fixed or mobile tions shali be made capable of ceasing radio service, or between an earth station and stations on ac- emissionsby the use of appropriatedevices that tive satellites for the exchange of communications of the mobile service, with a view to their retransmission to or will ensure definite cessationof emissions(bat- from stationsin the mobile scrvice. tery life, timing devices,ground control, elc.)." Communication-satellite earth station-An earth station The conference also approved technical stand- in the communicalion-sarellileservice. ards and criteria permitting Communication-satellite spac€ station-A space station space services to in the communication-satellite service, on an earth satel- share most of its frequency allocationswith ex- Iite. isting terrestrial communication services.This Active satellite-An earth satellite carrying a station in- was accomplishedby agreeingto limit the signal tended to transmit or re-transmit radiocommunication strengththat certainspace stations can deliver on signals. "coordination Passive satellite-An earth satellite intended to transmit the Earth, and by setting up dis- radiocommunication signals by reflection. tances"within which countriesmust coordinate Sat€llite system-Any group of co-operating stations pro- their viding a given space service and including one or more spacecommunication activities with ter- active or passive satellites. restrial communicationactivities in order to Space ressarch seryic€-A space service in which space- ensurethat interferencewill not occur to either cralt or other obiects in space are used for scientific communicationactivity. or technological research putposes. Broadcasting-satellite service-A space service in which The conferenceadopted a recommendation signals transmitted or retransmitted by space stations, [Continuedon poge 941

Jonuory, 1964 CQ 65 theUSA.CA PR()GRAM

Her stof Nirl regl incl for HREE county hunters bagged USA_CA- Clq 1000 during November, 1963 together VE with ten hunterswho baggedUSA-CA-500 l0 as follows: or mer 196 usA-cA HONOnnorl for Col 1000 sfqt w8RQ...... ,.....18 K8CtR...... 19 K0DEQ...... 20 ber, 500 qoo y4?sAz ?qq KsDWc.... 28s G6VQ...... 2e3 MGI l!g_[g.wt ?87 K6EtE.... 2e0 woein ...... zsa UTI, wTzKL...... 289 wsLEF...... 291 xsMLM . ..195 K3GE0...... 292 Here is oword sponsored by Son Fernondo Volley Rodio cxz Club, SFVRC, for working members; los Angeles ARRL OXI Jeoron stotions work l0; rest of Colifornio ond U.S. Of the above USA-CA-1000awards. 1g were work 5; oll otherswork 3; contoctsqfter.Jqn. l,1962: mar all c.w. and others were mixed operations. Of no chorge but s.o.s.e.for seols opprecioted given for cen the ten USA-CA-500 awards, WA2SAZ was all repeti?ion of obove requiremenls. No nef contqcts credited. its 6 metersphone; K3GE0 was all c.w.. and others Send log dofo only to Awqrds Choirmon, were mixed operations. K6UMV, Don Etheredge, 12040 Redbqnk Slreer, Sun Cor Volley, Colif.,9l352. qre: K6BX On Go Members WA6ASA, ASA, eve AWO, AYM, BHC, DCY, DUf, DXZ, EDO, EFt, EOZ, EQE. offi, Almost didn't get back to Bonita in time to HAO, HIY, HXE, HXK, IZO, JIO, KtP, KI.Q, IDJ, I.VT,/I/IBP. I get this column in to CQ on last dead-lineas we NWY, NYQ, ONJ, OPS, OTT, OVV, PFZ, PII, PTG, PMP, Iica have been on the road back east for over three PPY, QHQ, QIP, QJN, RBN, RKD, RKT, RMT, SHB, SLG, sidt weeks and just returned home long enough to SQZ, TEI, TEN, TEO,TGH, TOI, IUK, IYZ, UPC, USL,UYV, fieL grab a pair of clean sox and headfor the Annual UZY, VAE, VEB, VEP, WCX, WMX, YCO, YTE, YUY, ZCB, Swap-Festdown Texas way. ZIP, ZMF, ZNQ, ZSO, ZWB, ZWS; W6AYY, IN, KBE,KHU, slto MEP, PJR, Both Sides Of The Coln OEZ, QJW, QOV, QAA, RXD, SNY. UEI, UEK. 499 UIY, ZGZ; K6BAU, CVA, EBQ, EPS,GPQ, IHU, IUN, JDI, Bro The most controversialissue ever facing ama_ JIM, I.DC, TRU,MHR, OAO, OKT, PXD, QAL, RVA, RVB, jori teur radio operatorsin the U.S. was thrJwn in UBI, UCE, UCG, UHO, UMY, ZIX; WB6ACY, APX, AXS. deb the hopper when the Leaguepetitioned the FCC AYE, GFD; WN6BDD, 8YY, CSS, CSZ, DUS, FIP, GEX; ablt for a Rule change (RM-499) covering both WV6QKE, WPA, WUS, ZDZ, ZtW, ZeG; K0pXt; WA4tyJ. licensecategories, restrictions, special privileges inte one. K6BX was invited to Brownfield to speak bro and re-allocationof band usage, guise "License under the in oppositionto the League'spetition. of Incentive." con For 45 minutes Soupy attempted to sell RM- reel A major reasonfor the bitter controversyhad "License 499; for 45 minutesK6BX relatedhow, in scores Lut nothing to do with Incentive" but re- of instances,RM-499 was dangerousto both the you sulted from the drastic approach by ARRL and national defenseinterest and the public interest. their failure to honestly political state their while at the sametime supporting motives. somemore whe realistic incentive licensingapproach. Following we On November 9th, 1963,the writer debated the two 45 minute talks, those assembledwere Tnr this controversialissue with First Vice president permitted (unrestricted)to throw questionsat iso of ARRL, Wayland (Soupy; Groves,W5NW, "Soupy" either or K6BX and in all caseseach to) for three hoirrs before the annual Texas Swao- had equal opportunity to comment with equal dou Fest held at Brownfield,Texas. Folks from all time. Following three hours of democraticde- evet over Texas came to Brownfield seekinganswers bate the temperof thoseassembled was tested: toF to the questionswhich haveplagued most every- net result. , . only twelvepersons voted to sup- stat ",U-"d S,"-t .1 A-.ri* Crr",i.r A*d C*adt"* port the Leagrre'sRM-499 and six of thesevotcs capi tsox 385, Bonita, California 92002 were by ARRL officials. A proposal then was mul

65 . CQ o Jonuory, 1964 {- t'Eft${&tri.vesre }i, World-Wide Public program ""'l:* ewa*o g- Service 'ffi --:", ') The jfTr -" "#,:i:*Jf' Yl-lnternational SSB,ers,Inc., have an_ '.,*i ":: ffi nounced formation of a World-Wide public ServiceProgram through creation "Communications of an Amateur :::l- Radio System Facilities,,' ttrlr . *2* ""W''*r' sevendays a week, for the purpose of: a. Han- "4"t*r*iG{#'-' dling international 5 emergencytraffic; b. Efiecting i rE.Ei.gr, delivery of urgently needed life-savins medica_ tion Lo individualsworld-wide; c. Act-ivelynro_ moting international good-will through mass rrr person-to-personcontacts both on_the_airand Here is the Pennsylvonio Counlies Aword for workinq subsequentcorrespondence and exchanges; siofed d. Ef_ numbers of counfies which is sponsored by th! fe-ctivelypronloting incentive Nitfony p.O. for a higlier degree Amoieur Rodio Club, Box 60, Store Col_ of operatingproficiency lege, Po. and associatedtechnical Closs AA for DX stotions excluding VE but including competence;e. Promoting effective world-wide KL ond KH for working 67 countiei Closs A for public relations through ony stotions working 6716e (lost fiqure for DX): additional media of Cfqss B is realistic programs 60/50; ClossC is 45 / 40 ond Clq-ssO is gO l2i. -awards and annual eSO VE stotions work qs pa.rties;f. some U.S. Send GCR list, $l or Co-operation with, and suppori of l0 IRC for bqsic oword in ony closs iniriolly onj l0d other organizations with similar or iurpos..; I IRC for higher closs endorsement seols. Endorse_ g. Bringingto the attentionof the geneialpublic menls for AOMB/M. All confocfs offer Jonuory l, the tremendouscontributions through which 1960. The Nittony ARC olso sponsorsrhe NARC Awqrd Amateur for Radio servesthe public interest.the working members ofler Jonuory l,1960. Cenfre Counfy, nationalinteresf. peace antl good-willamongst Penno. slqtions work l0 members or the club stqtion the peoplesof theearth. K3HKK ond 7 members; All others work 5 mem- bers The SSB'ers, or..the. club sfotion plus 3 members. Apply os now with 1,900members in over obove. Members 200 ore: W3CDR,EJA, lRT, KJM, KXS,!NW, countries,have establisheda world_wide MGP, NEM, NUO, POP, RBC,RNH, sAY, SMV, SLX, TY[; communicationssystem with communicationco- uTf, uvQ, WFZ, WJS, ZUH, ZZO. K3AHY,AKR, BRH,CtX, ordinatorsin the following twelveworld areas: CXZ, EXE,IOQ, KMP, I.UX,IVA, LVO, ONH, ONK, OOU, 1. Southeast USA and Central America: OXT, PIF, POG, UGR, TMB, UHC, UJM, VGS. VPH. 2. NorrheastUSA and Canada-VEl, 2 & 3l 3.Central USA andCanada-VE4 & 5; 4. South_ I west made that FCC be petitioned for a realistic li- USA and Mid-pacific; 5. Northwest USA and censeincentive program which did not have as Canada-VE6,7 & 8, and Alaska;6. Europe; 7. I its objective that of kicking the Generals and Mediterraneanand lndian Ocean; g. Noith Conditionalsoff the phone bands;result and Central Africa; 9. South Africa; 10. South I every person in the hall including the ARRL America;11. Oceania; 12 Far East. I officials stood up. Commr"rnicationchannels, established in suo- port "system". I As we havestated repeatedly in our own pub_ of the includesthe following regir- lar Iications.we seekonlr. a freepress wherein toth schedules:(Run 4 to 5 hoursduration) ,.svs- i sidesof controversial coins are shown. At Brown- MoNo,ry 1900cur, 14,331kc, SSB'ers tem" field, both sides of the League's RM-499 l,as originatingin Europe.heaming Africa. TuEsDAy ..svs_ .r/rol,n. Whether the reader is for or against RM- 1800crvrr, 14.331kc, SSB'ers ' tem" 499, and contrary to propaganda otherwise, the originatingin USA, beaminsworld. Wrorl-soev Brownfield debate did bring out the great ma_ tE00cMr.14.331 k;. CHC/FHCr jority beamingworld. ; of answers sought by U.S. hamdom. This i debate was taped and this tape is It is avail_ fContinued on page 96) ' free! able to any individual ham or club who has the interest in learning the behind-the-scenesfacts i brought out in debate. To get a copy of this I complete debate. send two 1200 foot recording ' reels to Cliff Payne, W5IKH.3ll0 45th St., Lubbock, Texas. Cliff will run the debate on your tape and postpay it back to you free. As K6BX told the Texas folks. we care less whether folks agree with us or the Leaeue. all we ask is that folks listencarefully to both sides. TsrNr, and come to conclusions based on what is on both sides of the coin. So folks, you owe it to yourself to send for that tape and learn whv Yes, you qre 10070 righi, the obove is Worked All down Texas way RM-499 was iejected. and why Chickenville Aword sponsored by The Lonierlond VHF- even the state of Texas has submitted a Detition UHF Amoteur Society of Northeost Georgio for working to FCC in oppositionto the League:such petition two members ofter Jonuory l, 1962 on 50 mc or higher. No chorge, send list to qbove p.O. stating that RM-499 would destroy the state's iusf Sociefy, Box 188, Wesiside P.O., Gqinesville, Georgio. From capability of running its own Emergency Com- lqsl reporl, fhere were mony more roosters in Chicken. munication Coros. ville thqn v.h.f. homs.

Jonuory, 1964 o CQ o 67 HIs issuemakes two yearsthat I have been a.c. power, dynamotors, vibra-packs and a back as your NovrcE editor. I have re- couple of times it was even operited on a 400 ceived lettersfrom 32 countries.all con- c.p.s.power supply.It is certainlya very \ersa_ tinents and most of the states.Letters come from tile rig. A linearamplifier can be usedto imp.iove hams ranging in age from 8 to 76 years and its operatiun.A transislorizedv.f.o. is nlinncd many Fig' of these have been followed up by per- for thefuture. f histransmitter has enoLrgir pou.er sonal visits that I enjoyed very much. I enjoy for working lots of DX and for any local con- receiving your letters, pictures, hints and ques- tacts.With properprecautions very little I VI is L3- tions. I have L3- answered most of the questions that causedby the rig,due to the useof 50 mc crl,stals have been asked, although on some of them I and good grounding. had to do a lot of research to find the answers. ( Some questions are still unanswered and j anolo- The Tronsmitter pro gize for that. bur lwill get ro rhem laier. I wit. always apprec.iatea stamped self-addresseden- The transmittershown in fig. 1 usesa 6U8 par velope as this cuts down my cost considerably: tube in a simple slug-tunedoscillator circuit byF this isn't too much to ask is itl I have most all usinga 50 mc overtonecrystal in the trioje sec- Th( of the magazines that have been publishecl for- tion of the tube.The pentodesection is useclas wlt the amateur radio fraternity antl I am still cUF a buffer-amplifier to drive a 2E26 as a final nec rently receiving CQ, QST, Radio-Craft, Rtuii,t amplifier.The output is coupledto the antenna wit Nert's and many other sources of information through a pi-network to reduceTVI. T'he output for the ham. Some day I hope to be abie to can match almostany type antenna. spo answer questions about any article that has ap- The audio output of a crystalmiciophone is pro peared in print in the past. I was lucky to adcl amplified by another 6U8 and transformer- sho to my collection of QSTs this past summer wben coupledto a pair of 6AQ5s in push-pullas the ma: I bought about a hundred and twenty-five copies modulators.The transformerused in nrv unit col, from Kurt Rieder. WA2RKW. These give me wasa surplusitem from an SCR-521tranrmincr. coii a lot of background on the whys and wherefores ln practiceI actuallyused a pair of 5763 tubes par of present-day amateur radio. You knorv. it is as modulators.Any similar pentodeor tetrode "To I often said. predict the future you would rearl powertubes can be usedfor modulatorsby mak- anc the past." I will continue to collect ihe older ing the propersocket connections and operating to copies of these nragazines as I can affcrd. N{y paranreters.It is alwaysbetter to uselarger tubes shit rruseum of older radios is still growing, too. and run them cool than to overloadthe smaller. L Again, thanks for the letters and please tubes.I have neverhad to changea tube in this kceo joit thcnr coming as they arc rhe heart inrl ,..u1 tif transnritteras it is my policy to run therrrcool. IO( our column. I can always use nlore picturcs ancl By wiring the 6U8 filamentsin seriesand loeas. using l2AQ5sas modulatorsand an 6893tube are for the final you can use the car batterv the | 5 Won 5ix Meter Trqnsmiiler r llv.d.c.) as a filamcntsrrpply. D(, ttt)t ttsc;l the '_j_5) (r!-,\tol tnicropltonc I After using the little 5763 rig (CO, Nov. in tltc t:ar as the heat insidc the car on a warm day will mit for au hile and receiving many comments like. fuse thc crystalele- "That ment in the nricrophone. doe thing loolts too small to put out a gcod The a.c.power supply can be an) signal," it was decided to come out with a riq any supplyusing conventionalcircuitry and delivering thir with a little more power for use at field events 6.3 volts at 3 a. and 300 or so volts at 150 tror and for emergency use. A description ol that rig or more ma. The a.c.power supplycould be pai follows. This unit has been run continuolrslv for built as an inte- gral part of the transmittingif 16 hours at three Field Day operations,nj hu, desiredwith a plug-in arrangementfor the emergency ma served as my main station to help keep rny power source.For mobile or portable Jus record of continuous daily contacts on v.h.f. for servicebatteries could be usedor a small me 3155 days. It has been operated portable with dynamotor.vibrapack or transistorizedpower supply used to furnishthe itv *R.F.D. 3, Waynesville,Ohio. 45068 necessaryhigh voltage. full

68 o CQ o Jonuory, 1964 l"'l v2B r,ll^l r't1

t--/Jt-.."i] !'"1

Fig. I -Schemolic diogrom of the l5 wqlt six meter ironsmilfer described in the text. All resistorsore 1/zwoll ond oll cqpocilors qre in mmf unless otherwise noled s/e" \-6.7t. #16 tinned, l" long, dio. Tr-Stqncor A-53C. " \-671. #16 tinned, l long, s7"" 6io. Yt-Fiffh oyerlone 50 mc crystol. Construction canreback to nry CQ. I was usinga fifth overtone Constructionis simpleand shouldpresent no crystaland it was oscillatingon the third over- problems.I useda 1 X 7 X 2" alurninumchassis tone: 30.276mc-outside of any amateurband with plenty of spacefor everything.Mount all and making me liable for a pink slip. Use your parts for short leadsand neat layout. Keep all grid-dipper!See you on six meters. bypasscapacitor leads short and nearthe socket. The cathodeleads for the 2E26 shouldbe made A LetterFrom Hungory with a copperstrap between pins 1-4-6and con- If you will read the following letter and think nected by another copper strap to the chassis about it for a few mom€ntsyou will get a very with as short a lead as possible;this is important goodmessage from it. This letteris my first from -many casesof TVI have been traced to this Hungary and the 32nd country to write to spot.Disc ceramiccapacitors should be usedto Novrcr. "I provide low inductance bypass paths. Coils do not know if you have gotten any letters should be resonatedwith a grid dip meter and frorn Hungary. I read your column in the CQ may be wound on any availablecoil form. The always with great interest.I am a Hungalian coil data given may not hit the band with the s.w.l.,and a pupil of the secondaryschool. I like "bail coil forms that you have,but is given as very much working on the shortwaves,and an-r park" data. very glad to be getting answersto my QSLs. Modulator wiring should also be kept sholt Here in Hungary,the s.w.l.s.too. are'full n-rem- and routedas far as possiblefrom the r.f. wiring bers'ofthe amateur society. Not so.in theU.S.A. to preventfeedback. lt is a good idea to use -Hi'}. I see that in the USA many certificates shieldedwire for all low level audiowiring. are issuedbut we hardly may get them, sincc Usea cleansoldering iron and keepall solder 1'ourbureaus do not forward the cardsof s.w.l.s joints free of dust and filings.Use enoughheat to the addressees. "My to effect a good bond and be sure that all joints rig consistsof a 7 tuhe supelhetreceivcr. are electricallyperfect. Cold solder joints are I listenmostly on the l4 nrc band.Today I harc the causeof many transmitter'snot delivering 192192DXC.C coLrntries.and 3-5/29zones for' their maximum powerolltput. W AZ. I like to collectcertificates. and I feel that I havenot had to neutralrzeany of the trans- it is deplorablethat most of the certificatesare rnittersthat I have built, but if your transmitter not issuedfor s.w.l.s.ln my opinionit is incom- doesexhibit spurious oscillations you canemplol' patiblewith the spirit of amateurradio friencl- any of the popular methodsof neutralization.I ship. I would like to get my license,but in this think that one possiblereason I've had little year I must learn much, and I have not enough trouble of this kind is that I've alwaystaken great time to work my station "l painswith my layout, wiring and shielding. correspondwith s.w.l.sall over the world, Use your grid dipper to tune the r.f. circuits and would like to correspondwith American making sure they are on the right frequency. radio amateurs,too. So, pleasegive nry address Just becausethe crystal says 50.4 mc doesn'i to a boy or girl who would like to correspontl mean that that is the only frequencyon which rvith a 17 year old Hungarianboy. "So, it will oscillate;my transmittertuned up wonder- 73 and goodluck, Walt. I shallread 1'our fully and indicatedgood output but still no one [Corttinuedoit page98]

Jonuory, 1964 o CQ o 69 TfffnH this issueof CQ we celebraterhe Recontmended.'Before you write to the editor lL/ 7th birthdayof Herr.rCr-rNrc. Conceived to reply to a published letter or proposal by a Y Y by us to help the ham with his technical body official, take two days to cool off, then and other problemsrelated to ham radio, we come back and re-readthe material. Pick the have certainly tried very hard to help thosewho salientpoints which you wish to rebut and then soughtour assistance. stick to thent. Rewrite your copy at leastthree Spendingmany hours in front of our type- times,keeping the pointsgiven in the paragraph writers,Elfriede and I haveanswered thousands beforethis one in mind. Be brief and factuallif of lettersfront hams (and others) front nearly you are.your letterstands a good chanceof be- every country in the world exceptRed China. ing published. During the last 12 issuesof CQ we have coveredmany subjectsfor our readersand we Questions have gotten much satisfactionout of knowing Identifying Surplus Components-Thosereaders that we were, in our own small way, making who have surplus components which they ham radiojust a little more enjoyableby helping cannot identify are advised to do two thinss: otherssolve their technicalproblems. first.write the manufacturer( if the pu.t .rrrl., To handlethe H,cNaCrrNrc answeringservice the manufacturer's name) i second. see if it we rely on a well equipped technical library, could be in a Federal Stock catalog.The catalog filescontaining instruction books, diagrams and can be seenat any military supply activity office. servicebulletins and the kindnessof mostequip- Tracing the origin and characteristicsof a ment manufacturers' service managers. of surplus transformer for one reader took about course,our 30 years in communications-elec-three hours; this is too much time to devoteto tronicswork helpstoo. any questionor requestfor information. The encouragementwe have received and continue to receive from readersmakes up for' ReceivingAnlennq Multicoupler the long hourswe devoteto readers'correspond- Oneitem of communicationsequipment which hasnot receivedmuch spacein the amateurradio We like lettersthat are brief and to the point, literature is the receivingantenna "Dear multicoupler. like this one: Chuck: recommendationon The reasonfor this is no doubt due to the fact purchaseof SB-10,go or no go?" (Our answer: that most hamsown only one receiver,and with go.) only one receivera multicoupleris not needed. Long ramblingletters take a lot of time to reacl However, there are now many hams owning two and actually accomplishlittle. The letter that or more receiversand only one all-bandantenna; asksthe questionwith sufficientbackground in- the information that follows is intended for formation so that we can give an intelligentan- them. sweris handledquickly. An antennamulticouplel for receivingpur- So as we go into another new year, we thank posesis nothing more than a device which per- eachand everyoneof you who haswritten to us. mits the utilizationof one antennawith two or Happy New Year! more receiverssimultaneously without interac- tion and lossof gain. Generally,a multicoupler Observqtion will employ a broadbandinput amplifierand a When one readsthe ham publicationsavail- number "letters of isolationstages. Each suchstage pro- abletoday, an analysisof the to the edi- vides a certain amount of amplification and this tor" columns sometimesdiscloses the fact that when addedto that obtainedfrom the inout am- a few letter writers are often a littie too emo- plifierwill generallyprovide quite a bit of gain tional, tend to make snap judgments,often mis- which would not be realizedwithout the coupler. quote or read into publishedstatements attitudes Various problems are encounteredwhen de- or ideas which are not always there, and often signingmulticouplers. Some of theseare: main- fail to distinguish between that originally im- taining uniform gain and receiver isolation plied and that stated. throughouta largefrequency range: noise gen- erated in tubes and associatedcircuits: main- *c/o CQ, 300 W. 43rd St., New York, N. Y. 10036, taining uniform output of each of the isolation

70 o CQ o Jonuory, 1964 Fig. l-Experimentol receiving qntenno mullicoupler for l0 fhrough 80 meters. Switch 51 is sel for best per' in use. All resistorsqre 7z unlessotherwise specified; oll copocitors ore in mf ond formonce on the bond .wotl ore dlsc ceromlcs.

lF30l h-9 r. B&W #3Oll Miniductor. Spoce It. from cold Ld-8t B&W I Miniductor. end of 12. l-s,L6-12r. B&w #301 I Miniducior. Top 4t. from cold [2-40r. B&W ]l30l l Miniducror. end. [3-3t. B&W #301 1 Miniducror. Spoce li. from cold 51*2 pole 2 pos. ceromic rotory switch. end of 14. amplifiers; attenuation of spurious signals;har- receiversare connecteddirectly (in tandem) to monic distortion;intermodulation, and oscilla- an antenna. The overall gain of both sets was tion. appreciablyhigher on 7 and 2l mc than it was Commercial manufacturersutilize tubes hav- on the other bands. However. the lower noise ing fairly high gain and low noisecharacteristics' and increasedgain on 10 meterswas well worth Usually, the first stages(amplifiers) are triodes the effort putting the coupler together. but the succeedingisolation stagesare pentodes Note that the grids of the 7587 isolationampli- with the suppressortied to the cathode to give fiers are in parallel, while their plate circuits are more stability. isolated from each other. Perhaps pentodesin Actually,by substitutingtuned circuits for the these stageswould make for better isolation. If broadband fixed tuned circuits, it is possibleto you decide to try pentodes,be certain that the use the multicoupler as a preselector-amplifier. suppressorgrid is connectedto the cathode and However, if high gain tubes are used,there is that you use all of the isolation resistorsshown. alwaysa possibility(if care is not taken in iso- Neutralizationwas found unnecessary.How- latinginput and ouputcircuits) of oscillation. ever,if you run into oscillation,any of the usual Of course,commercially availablemulticoup- neutralizationmethods normally used in trans- lers are out of the price reach of the average mitter stageswill work. ham. Furthermore, they are generally designed If additional receiversare used, all you need for up to at least six outputs. do is to duplicatethe last isolationstage for each extra set. Just make sure that you have the re- ExperimentolAntenno ReceivingMulticoupler quired filament and plate power for the extra Having RCA Nuvistors availablein my lab, I tubes available. thought that I would take advantageof their You can try tuning the secondaryof the an- inherent low noise characteristicsand put to- tenna input coil assembly for added gain by gethera double output multicouplerwhich could paralleling it with a variable capacitor of 250 be used on the hambands.Figure 1 shows the mmf on 3.5 mc to about 50 mmf on 28 mc. diagramof the experimentalcoupler which seems Make certain that your inputs and outputsof the to work remarkably well considering the fact coupler are isolated mechanicallyso that there that relatively little effort was made to provide will be no feedback. a unit having all of the desirablecharacteristics The input of this unit was roughly designed of a commercial coupler. Furthermore, compo- for 72 ohms. but if you wish to changeto some nents (including the coils) were selectedmore other value, the link may be modified accord- on the basisof their availabilityrather than to ingly. exactly meet the paper designspecifications I If your receivershave different input im- drewup. pedances,yor-l can modify the coils in the outptlts The unit has been used with two receivers of the isolationamplifiers to match eachreceiver, without any interactionbetween the sets and br.rtthis will take a little experimentation' seemsto provide a lot more gain than when the You can use other coils insteadof those sug-

Jonuory, 1964 o CQ c 7l gested,but I found the B&W 3011 f Miniductor pedance.If a capacitoris usedin serieswith the (16 t.p.i. s/c" dia.) ro work okav. coax_atthe v.f.o.end, disconnectit and try link The plateand screenpower foithe unit shoulcl coupling on the output coii to the rig. This will be.wellfiitered. and. if possible. the platevolrage help if the input of the rig is low impedance. going to rhe 6CW4's should be regulatedf6r 2l Mc Prearnp-"p.leasegive me a ieference best operation.Switch to Jr is a DpDT ceramic a good 2l mc preamplifiercircuit.', tap switch (two sections). Normal r.f. shielding Sce June 1956Ce. page46. is employedand the "ln circuit layout did not seeni NC-240D Updated- what critical. issueof CO did the info on updating the NC-240D We upp.ufr', hope the informationwe have given will November1957. serveto answerrrosl of the questions we have Gonset Communicator Info-,,Any information on multicouplersfor receivers. ]=..:r-u"g If you ever appearin CQ on the GonsetCommunica_ build the experimentalunit. let us know how tor?" you ntake out. The first readerwho senclsin a 1957(GC Notes);April 19_56 pictureof the unit using Nuvistors(alons .^Yes..January with (SelectivityImprovement); and more-notes operationaldata in ) \ ill be awardedsomithins May 1957.Also March 1959 (soup-up). worthuhile. KWM-2 and KWM-2A-"I own a KWN,|-2which T'V Vidicon Tube-"I ant planning .hang-up, on construct_ lately exhibits a tendency to or there ing a good portable transistorized camera for is a delay in operation when switciing from ham TV use.I'm looking for vidicon a with at rRANsMrrto REcErvE.A buddy of mine also has least900 line resolutionand which doesnot re_ the KWM-2 and his does not do this. Anv ad- quire a lot of heaterpower. Can you assistme?" vice ?" I think so. Write Amperex Electronic Corp., Yes. The delay in operation is not due to TubeDiv., 230Duffy Ave., Hicksville.L.L. N.i.. KWM-2 designbut can be causedby screengrid and ask them for technical g4g3 specson their emissionof the 6146's.Collins his a bulGtm l" vidicon. This is a real fine tube, is not overlv out on this. Its number is 6 and dated 1_11-62. expensiveand has.I believe. what you are look- If screengrid emission is present (the bulletin ing for. will tell you how to determinethis), a 1N1490 10 Meter Drive Fall-ofi-Some hams who have diode is installed in place of the bus wire con_ purchasedv.f.o.s and connected them to their nected from terminal E3 (feedthrough terminal rigs are dismayedto find little drive on 10 meters. locatednear the rear apronin the p.a-.grid box) Our files are full of letters asking for the solu_ to terminal 4 of terminal strip Z,Sr.The anode tion to the v.f.o. drive problemon 10. of the diode is connectedto E:r. The 1N1490 Simply unplugging a crystal and plugging in diodehas part number 353-1659-00 and is avail- a v.f.o. does not always work. Here are the able from Collins for 93.28 along with the reasons.First. the output irnpedanceof the v.f.o. bulletin. may not be proper for the oscillatorcircuit usecl Globe Scout Oscillator-"I get drive from my in the rig. Secondly, some hams have the idea v.f.o. to the 6V6 oscillator in the Globe Scoui, that they can drive their rigs on l0 meterswith but not enough. Any suggestions?', either an 80 or 160 m. v.f.o. output, although Yes, read the information given earlier in this they have been using 7 mc crystals for 10 m. column and replace the 6V6 with a 6AG7 or operation. And last,but not least,the r.f. output 6CL6. Socketrewiring for the 6AG7 and a new of v.f.o. the may not be greatenough for proper socketand rewiring are necessaryfor the 6CL6. l0 m. drive. Parts valuesneed not be changedfor the switch- Most crystal oscillators(used as a buffer when over. v.f.o. a is employed) have a high impedance Panadapterfor Double Conversion Receiyers- input. "Sure If the v.f.o. output is /orr,impedance, you would like to get the necessaryinformation run into trouble. Changing from low- to hieh-Z to use my 455 kc panadapterwith my receiver requires anotherluned circuit or a redesis-nof having an i.f. of 1650 kc. Can vou helo?" the oscillator.Generally. if rhe v.f.o. has i-ow-Z First, if you'll get a copy of the June 1960 output and the rig oscillator a high-Z input, ail issueof CQ you'll find an article on the subiect one need do is link couple a resonant parallel by K2DHA on page44. His merhodwill work tuned circuit to the v.f.o., with the tuned circuit but not as well as if an extra stage (at the i.f. going to the oscillator. frequency) is used.The gain with his method on Expecting proper 10 m. drive with 80 or the higher bands is not ideal and the displays 160m. v.f.o.output leadsto a lot of frustration. show this. I built the unit with another stase Sometimesit can be done, but not very often. and the resultswere very worthwhile.I did Stick to the crystal frequency. however,broaden out the responseso that I had Low r.f. output from a v.f.o. is sometimes an effectivebandwidth of about 150 kc instead unavoidable. The best way to obtain the in- of the 100 realized by K2DHA. Normal band- creaseddrive is to add a buffer-amplifierstage. width is about 200 kc in most adapters. Increasingvoltages to the v.f.o.will not, in most llotlifying the HQl70 -K8ZHZ modified his cases,do a bit of good.Sornetimes the Z trans- HQ-170to improvefrequency stability by wiring formation (explainedabove) will yield the ad- in a separate6.3 volt filamenttransformer (1 a.) ditionalr.f. voltageneeded. to feed the h.f. oscillatorand mixer tubes.The One other thing: If coax is usedto couplethe tube filaments are on continuously.He also in- v.f.o. to the rig, be sure it is the correct im- lContinued on page l02l

72 o CQ c Jonuary, 1964 I - RTTY

The KWM-2(A) on RTTY RTTY Opercrting Frequencies Many of the letters receivedare in regard to Nets centeredon frequenciesgivenl oper- the KWM-2A, a transceiverdesigned for s.s.b. ation usually-r 10 kc on h.f, Simple diode shift results in slightly different 80 meters 3620kc frequenciesfor transmit and receivein the trans- 40 meters 7040 kc ceive mode of operation.This is awfully incon- 20 meters 14,090kc venient since it is general practice to zero beat 15meters 21,090kc the other fellow. 6 meters 52.60mc Major JeanAudette, WIBZD l2 at Plattsburgh 2 meters . 146.70rnc AFB, N.Y., experimentedfor about a year and one-half with different techniquesuntil he came up with the idea of using two separate50K po- E continually receiveletters asking how tentiometersfor shift control. one for transmit to modifv a Darticular commercial "amateur" and the other for receive.It was just a short step s.s.b.transmitler or trans- to add a third pot for narrow shift code identi- ceiver so that it may be used on radioteletype fication. To simplify the transmit-receiveswitch- (This we find difficult to understandsince we like ing a 1l0-volt control reiay was also added. to build specific equipment for a specific pur- Jean happensto use a Kleinschmidt TT98 page pose.) We therefore wonder why the manufac- printer and TT76 TD-reperforator but the cir- turer of thesechrome plated jobs didn't build-in cuitry is equally adaptable to any other com- RTTY in the first place. Maybe generalpurpose binations of Teletype machines.The local loop transmittersare uneconomicalto producefor the is set up for 20 ma but there is no reason why ham market.But. looking at it from the ham's it cannotbe setup for 60 ma. point of view; if he has a largechunk of hard- Figure I is the schematicdiagram of the loop earned cash tied up in a commercialjob. he "general and shift control system at WlBZDl2. The wants to get as much purpose" use out sEND-REcErvEswitch on the TT98 was changed possible. of it as to a double-pole-double-throwswitch with a *431 Woodbury Road, Huntington, N. Y. 11743 center-offposition. This allows the KWM-2(A) to operatein the s.s.b.mode with the shift circuit disconnected.The polar relay K1 happensto be RffY fhellard Woy...No. 28 the handy miniature Sigma relay in the TT98 but the WE 255.4 in another set-upcan be used in the samemanner. Rr is the f.s.k.shift adjust, R2 is the receiver adjust for frequency correla- tion, and R3 is the narrow shift adjust for code identification. All three shift adjust pots can be mounted in the case from a discarded 9-pin sealed Sigma relay. The 9-pin base of this relay is used as a plug to go into the v.f.o. external power socket "/rz of the KWM-2(A). Pins 2-3 and 6-7 are jumpered.Miniature surplus pots are convenient to use. (Thosewho use an externalv.f.o. with the KWM-2A can modify the KWM-2A by solderinga short piece of wire from pin 5 of socket "I17to the spare jack "/:t; at the rear. Then all the pots can be installedin the TU.) Operationis simple.The ,{-polecontrol relay K2 is energizedwhen the send-receiveswitch S1 is put in the sendposition. This opensthe short "l sfill don't think Roy sent me fhe right geors! acrossthe keyboard, grounds the TU connection,

Jonuory, 1964 o CQ o 73 New economicql Model 33ASR Teletype mqchine hos q {our-row keyboord ond operotes on on 8-level code. The similqr Model 32ASR hqs lhe usuql lhree-row keyboord qnd 5"level Teletype code. Although these mochines will operote ot I O0 w'p.m., they olso will operqle ot our 60 w.p.m. wilh the proper geors. Bolh models ore mode in simple poge-prinfer versions,loo. Monufoctured iniiiolly for the Bell syslem, fhese prinf' ersweigh only 35 pounds lessfloor stqnd ond poper roll. and keys-on the KWM-2A. With the emission switch on cw, the on-off switch on cAL, set the receiver to a 100 kc point and, observing the 'scope shift on a phase-shift indicator (RTTY Handbook, page 149), adjust the f.s.k. adjust pot R1 for the desired850 cycle shift. Now, pttt the send-receiveswitch 51 in the nrc position and adjust the receiver pot R1 to obtain 425 cycle shift. The narrow shift identification pot R3 is adjusted with the send-receiveswitch in the center or off position. About 20 or 30 cycles shift is sufficient. For a more accuratesetting of the frequency correlationpot, go on the air and ask a stationto zero beat you,then without touching the receiver FR exciter.W4MGT of Lexington'Ky., now has Ala'' tuning, adjust Rl for correct tones to your TU. a Model 32. WA4OCY of Huntsville, By the way, unlessyou have a blower on the (formerly NCS) checksinto the East Coast net' power amplifier of the KWM-2A, don't load it WA5DEO of Lake Charles,La.. is looking for (Try John to more than 150 ma. dooe on how to f.s.k. his Invader. Mignussttrt ut E, F. Jolmsort,Lesl) W6AEE of On the Bouds Arcadia, Calif.. was in the hospital during No' W1KAY of Westport.Conn., uses tape on 80. vember for a minor oPeration. WIETF is on 2-meter autostart.WIVIY of KSMYF of Columbus,Ohio, uses his KWM-2 Trumbull. Conn.. old tine 147.96 (now cw. on 80 with a long wire.W8CSH at Ohio Univer- band) operator is looking for W2JAV circuit sity has for salea Model 14 Typing Reperforator usesan boards.WB2CVN, NCS of the EastCoast RTTY for $90. WSRRE of Rochester'Mich., Arbor' NET announcesthat net time is now 1900hours MXD-13 TD on 80. KSDKC of Ann W9YVP (rsr) on Wednesdaynights. K2KAQ of Moon- Mich.. now has a Model 32 on the air. areawith achie.N.Y., is active in Navy MARS with his reportsRTTY booming in the Chicago The first an- Modcl 26. WA2YJD of Great Neck' N.Y. just n.i. o.t 146.70and CD on 147.06' TeleprintersSociety acqurreda Model 26 and is building the Twin nual banquetof the Illinois W9ZBY of City TU (lety is 11 yeors o/d/) W2PEE of Old (37 members)was held in January. via MARS' Brookville,N,Y., convertedhis W6NRM TU to Exeland, Wis., receiveda TG-78 an SFO-2regener- the two-tone limiterlesstYPe' WgBAV of Savanna,Ill', has modification or K3SNQ of Landsdale'Pa., has a surplusre- ative repeaterand is looking for of Park generativerepeater hooked to his simple limiter- use dati. Gry K8DKC,,rlrz.) W9OKF lessand tubelessTU (filtersand diodes,only). Ridge,Ill., usestaPe on 80. is looking for an W4ZLC of Albemarle, N.C., is on 80. W4NZY VE6AES of Raymond' Al', on 102) of Louisville,Ky., is looking for a surplus0-5/ lContinued Puge

-t I -ff'-fu I € li TI Pol.f Relo, rn TU + |

in Kw[4'2A

I 1. l^ --:J F:l:l

Fig. l-FSK conlrolsysfem {or KWM-2Aot WIBZDl2'

74oCQ o Jonuory,1954 I I EoPLE-To-PEoPLE.Have you heard about this program? Do You know what it is? Are you taking part in it'l People-to-People Executive Director Cookingham recently sup- plied somebackground information, from which we quote: "A young teacherin India learnsthat not all Americans are wealthy. A Philadelphiaintern gains insight from a Philippinebrain sttrgeo-n' Two eighth-graderson opposite sides of the globe discovera mtttual interestin exploring caves. "These and countless other instances of lrienrlty c'ontmunic'atiturbetween people of dif- ferent cultures are the objectivesof a dynamic growing organizationin KansasCity which was itarted in 1956 by PresidentDwight D' Eisen- 'to hower help people everywherelearn a little "Mr, more about each other.' Fqmous X"-pointer, wrifer, world troveler (olso "The organization is called People-to-People, OM of W6NZP)-helps hold poinfing he donqled for Inc..a non-profit.non-govelnmental corporation the Colif. Funfesl. Cenier, K6BUS, Midge, chqirmqn dedicatedto prorrtotirtginternational ttndetstand' of the Funfesf , ond right, WA6ZMG, Mory Jones, winner of this pre-registrolion prize. irtg ttntl lriertdsltip tltntttgltt(tttlAtl\ ttttd tortt- i d rt o Is." trttrnicct tiort b e tv'e e n i rtd it' effort to have contacts in foreign countries under- "natura1" for amateur ladio. Sounds like a stand United States citizens and our way of life' group has such an ideal doesn't it? What other 3-Encourage amateurs to become members of the hanls? means of communicating as local People-to-People chapters, and help de- specific sug- Director Cookingham had three velop in them meaningful People-to-People can help: gestions for ways in which amateurs contact by rneans of radio communication. encourage overseas 1-Amateur operators can A large order? Well, with any project one has with Americans. 2-Take people to correspond to start somewhere. We all like to collect QSL to encourage solid Lvery possible opportunity cards, especially DX ones. Why not try to make I friendshipsbetween amateurs.and make every DX contacts, personal friendships out of these i just with ffiNe*l4exio rather than grab at QSLs? Start at t. 87107. least one personal friend in one or more coun- I lpiss-s611s5p6nd (the written word is still powerfr,rl); find out about his or her country in detaill swap magazines and photos. (Many YLs are doing just this, especially via YLRL adoptees.) ln addition, help your non-ham friencls make new friends overseas; get them to correspond. People-to-People sponsors an extensive letter exchange program (for those who cannot make contacts) using a system that helps match cor- respondents on the basis of common interests' (Those uncler l4 may participate through the classroom program. ) Look up 1'our local chapter of People-to- Flyers oll, these YLs swopped iqles of the wild blue People. See if there is a Sister City program yonder during the Cqlif. Funfest. L. io r., WA6MFN, olTer to provide communi- WA6ACH, K6JZA, W6QGX, operating and. if so.

Jonuory,1964 o CQ c 75 Somepost "his" presidenisof YLRIgofhered ot ihe Colif, FO8AD, Rolond, ond two Moxines, lefi, WA6AOE, Funfest.l. fo r.,WTNJS (1958), W6DXI (1960), K6OaD ond right, W5UHA. Occosion-1.A. YtRC YI-OM (r963),W6CEE ('54.'55), WTHHH (52-'53). Volentine Porty

cation. (They often have no budget and even 21. Place: Nationwide Inn, Columbus, Ohio. airmail is expensiveto most of thesecountries.) Hostessclub: BuckeyeBelles. Cost: Complete If you have jr. ops, talk with their teachers convention (and "cousin" ticket, $10. Order yours an and encouragea classroomto adopt a extra banquet ticket for your OM at $5) from classroomin another country. Classesexchange K8UKM, Elizabeth "Zip" Isham, 474 Darby- letters, pictures, tape recordings,art work, bo- hurst Rd.. Columbus4. Ohio. tanical specimens,scrapbooks. There also is a Tentative convention program has been pub- University program of P-to-P wherein campus Iished and includeshospitality room to be open programs provide personal assistanceto foreign all day Friday, the 19th,with a completestation studentsand promote international understand- from 2 through 80, c.w., a.m., s.s.b.,and pos- ing and travel. sibly RTTY, plus displays.The YLRL Forum, For more information write People-to-People, headed by President KIIZT, is scheduled for 2407 Grand Ave., KansasCity, Mo. 64108. 9:30 e.irr.Saturday; the luncheonis set for I p.u., with the banquet for YLs and OMs, in- Y[s in People-to-People cludingprogram and prizes,atJ p.wr. W6NAZ, Lenore Conn, is actively partici- In addition to the regular convention ticket, "absentee" pating in People-to-People.For some time she the committeeis offering an ticket for has beenkeeping skeds with PY6BM in Salvador, $1. It is available to any licensedYL who can- Bahia, Brazil-the Sister City to Los Angeles- not attend but wishes to have a chance on the and they exchangemuch generalinformation embroideredbed cover and receive a memento between their chapter committees.This Fall a of the convention. Order from K8UKM. as group of prominent Salvador citizens visited above. Los Angeles, staying in private homes, and Lenore assistedwith these arrangements.(At Here ond There "Mr. the same time, Evelyn, W6NZP, and X" Taking office in Oct. for the Portland Roses: made a visit to Salvador.) Pres., K7BED, Bettie; V.P.-Treas.,W7QKU, Lenore adds that she is even trying to learn Donna; secy.K7BII, Mary; P/C, W7NJS.Beth. Portugueseto put more meaning in her PY Looking for Floridora YLs for certificatecon- QSOs!And she sums up her feeiingabout the tacts?They'll be on as much as possibleduring "It "Floridora People-to-Peopleprogram this way: is made Week." Jan.2O-24. to order for ham cooperation; the best part is The l\,lINOW net ( Fri. 1700 cln ) has that we can operateon our own. I feel.strongly changedfreq to 3.880. that personal friendshipsaround the world will The Puget Sound YL Coffee Net has an- l go a long way in the troubled situation.Time nounced a certificate for working members: I may be running out and we have a wonderful work 7 YLs 15 min. each.6 metersonly. Mail t opportunity to prove our good intentions. Now calls.dates and 25( to K7QMG, Milly Mowry, that we all seemto haveexcellent rigs, I note an 4514So. Juneau St., Seattle, Wash., 98118, DX i aimlessair to many QSOs;this is our chancet<; put our preciousfrequencies to good use and to contacts,3 YLs; SWLs, copy both YLs in 7 r otherwise I make fighting QRM worthwhile . . . I wonder QSOs. as above. To make it sound how many other YLs are involvedin People-to- intriguing, Milly says mention your favorite People?" color. The net meets on 50.25 on lst & 3rd v Let's hear from you gals-and happy hunting, Tuesdays,1100 psr, NCS rotates. S not just for QSLs, but for DX friendships! Purely Personol c YtRt 2sth Anniversory Convenfion Last August the W5RZJ family had the fun b January'64.Soon it will beJune,'64, and long of vacationing for a couple of weeks in Cali- SI awaited occasion of YLRL's 25th Anniversary fornia, much of the time as guestsof WA6AOE, Si n Convention(4th International).Date: June 19- fContinuedon pagel02l S( 76 o CQ o Jonuory, 1964 Vol. 6, No. I - Jsn., 1964

ED'TOR'AL mitter will run about one watt output, powered by internal batteries. PANNTNGthe continent on two meters has By listening in the 145.9 mc area and callins long been the dream of more than a few CQ near i44. 1. acrual eSOs are well within the v.h.f. men. And over the vears manv thou- realm of possibility via the satellite. It should be sands of miles have been breached by amateurs borne in ntind that during OSCAR's passageover with kilowatt finals, parametric amplifiers. low- your territory, you should specify that yorr will noi\e con\erters. and tnultiple-elemenlarra\s. be Iisteningin the I4-5.9mc region to avoid con- I BLrt for all practical purposes.the I two meier fusion. Due to the great altitude of the receiver, anlateur band renrains the localized raqchew many hundreds of signalswill probably be picked bantl it has jrs "clear" been since WW Il. Dependahlv. up and rebroadcast.A frequency on your range for the well-eqrrippedjeems ' to he abt,rrt receiver could well be jLrst the opposite coming one hundred miles.Although the band jtself ancl through OSCAR Ill. its propagational factors haven't chanqed much It is impossible, of course, to predict the life I o\er the yeals. ham ingenuity has. de predict expectancy of this apparatus in space. Most that not only u ill t!\o meter men be r.lorkinc likely it will be functioning for several weeks. acros:lhe continenlin 196'1,brrt a few.rv.,.n "hop This should be time enough for even the most the pond." This rery horrr nrnut.ui, ur. inactive of the two meter gang to fire up and working as they did throughout 1963 on clevelon- give it a tr1. ing and larrnching a satellitecapahle of relal ing As mentioned earlier. the exact date of the signals-your signals-across r.'astexpanses of launching is not known, but frorn all indi- land and sea. cations it should be just a matter.of months now. We are" of course.talking about OSCAR Ill, This project deserves the support and coopera- amateur radio's first repeurar satellite. scheduled tion of all amateurs able to operate in the two for launch year. early rhis 1\{an-vof you have meter band. Write today to the project OSCAR been reading CQ's Sr,lce ColruuNrc.qrtoxs Association,Box 183,Sunnyvale. California. for column and are familiar with the work that has reporting forms and further data. Over the years gone into this project. Delay after delay has it has been for-rndthat there are more stations on plagued the committee. bLrt it now appears the 114 mc than on any other single v.h.f. band in- satellite will orbit shortly, making amateur radio cluding -s0 nrc. This is your opportunity to be- history before our eyes. A good number of in- come an active part of amateur radio's largest terested hams followed the stories of OSCAR coopet'ati\e space effort. Be prepar.ed. I and ll and participated in the reporting of their observations. unfortunately. however-. up till The K3IOP Cose now the program did nol receivefrrll coopcrlaliorr Thosc who have been following tl-rercccnt TVI f rom aclire t\ o melel nrensincc they coirltlonil tlilemlna (see last month's VHF Editorial) will "Ilutch" listen and confirnr that thc signals eristecl.With bc interested to lealn that Charlcs A. "con- these first two satellites. beacon signals were Searnan. KllOP, has lefLrsedt() accept his transmitted in c.w. on 145 nrc. And over 1.000 ditional" Ccncral Class licensca. ni e.c,rte,ll.y amateurs from 30 countries reported in supply- tlte FCC. He has been notified by thc FCC ac- ing monitoring data. But reaj on-the-air.nartici- knowlcdging his position ancl urentioningthat a pation wa\ intpo'.ihle. OSCAR IIl, on thi r.rrhcr. clate will s

I Jonuory, 1964 o CQ o 77 i d UsingSurplus V.H.F. qnd U.H.F.Ref/eclometers BY LEROY MAY*, WsAJG/AFsAJG Sorne reflecfomefersore now ovoiloble on the surplus morkel ond lhrough MARS distribution. Mode for the Air Force,these unifs con tneosureforword ond reflecfedpower over o frequency range of 30 fo 1000 mc.When colibrated they moy olso meqsurepower over fhis fre- quencYronge with little error. EVERALtypes of reflectometercoupler units are now to be found on the surDlus'beenmar- ket. Some of theserrnits have dis- tributed through MARS as project assignments to determine their worth in amateur radio work. #"r,.1sr The units are small,light weight Micromatch w deviceswhich can be built directly into the transmitterto monitorr.f. poweroutput, s.w.r. and possiblyact as a modulationmonitor. They may also be built as separateindependent units for usewith variousv.h.f. and u.h.f.transmitters. Theywork on 50, 144,220,432 and quite possibly 1296 mc, as the rated range is from 30 to a bil over 1,000 mc. Actually these couplers may be used at lower frequenciesthan 30 mc for meas- uring s.w.r. but at thesefrequencies, they are not accuratefor power readingsand also show some power inaccuracies at extremely low power The indicotor unil is builr inlo o surplus lesl-sef box levels. ond olso uses o surplus meler. The Jones Micro Mqtch Although the surplus couplers seen in the unit 576.8 is bolred directly to the cose ond when locality are all alike in construction, they are connecfed lo ihe tronsmitler supports lhe indicotor. made by several manufacturers for the Air Force. M. C. JonesElectronic Co. makes the The units are built onto a section of the co- 571.12and 576.8and Saratogalndustries makes axial transmissionline but some couplers have typesLC 997R and 999R. coax connectorson each end. They produce no noticeable discontinuity in the line over the *9428 Hobart Street. Dallas 18. Texas. entire frequency range and the power handling - -'' capability is more than enough for the amateur ,YLlll'- coup*__l legal power limit. They are rugged mechanically , J-:" r_Po,,d and will stand a wide variation in temperature and humidity and still produceaccurate readings. Unit Types These surplus units are found in both single

(Lood) and double coupler types. The single coupler type will respond only to incident power and will produce a full scale deflection on an ap- propriatemeter and multiplierfrom 1.2to 1200 watts.The double coupler typesare really two single directionalcouplers built togetherwith one adjusted to respond to incident power and the other to reflectedpower. The incident and reflectedpower pick ups in the couplerare fed to connectorswhich contain type 1N21 crystals.These rectify the r.f. and the d.c. voltagesare fed to the indicator unit Fig. I -Circuii (A) for coupler is suiloble for o single placed remote point. reoding forword powers from 1.2 fo 1200 wqits. The which may be at any power ronge is odiustoble with fhe l0K pot. Circuit (B) Functions uses o 20 microomp meier wilhoui o multiplier ond is used for very low power only. lt is qlso not suitqble With proper switching an indicator unit can for moniloring. read the incident r.f. power, the reflected r.f.

78oCQ o Jonuory,1964 f__o,,r.*r*J (it used) ..i-.

I

Rr-10K

Severol fypes of surplus couplers, both single ond Fi9.2-Schemotic of o surplusdouble coupler qnd indi- double, ore shown qbove. The crystols ore confqined cqtor uni? which cqn be cqlibroted for power reodings in the conneclors olop lhe unils. Diftereni couplers con in the FoRWARDposifion qnd con be used to reod s.w,r. be used with vorious iypes of coox qnd some couplers in f he crt. qnd s.w.n. switch oositions. ore supplied with types N ond C connectors. power and the s.w.r. The net power to the load by R1 and C2, is also fed to the meter through can be determinedby the differencein the read- R;1.Now the reflectedpower may be read since ings betweenthe incident and reflectedpowers. the meter was calibrated full scalefor a known The single couplers can only monitor the in- power in the ronweno position. For example,if cident power to the load which will differ from the full scalereading was producedby 100 watts the net power by about ten per cent for an s.w.r. in the ronweno position, a quarter scalereading of up to 2:1. in the reverseposition indicatesa reflectedpower of 25 watts. This means that only 75 watts is lndicotor Units being deliveredto the load. Since the indicator units are not available S.W.R.Function along with the couplers, they have to be con- structed. Figures 1A and 18 show the circuits Actually, with the information obtainedin the recommendedby the manufacturerfor the single Forward and Reversepositions we can compute coupler type. The circuit in fig. 1A employs a the s.w.r. The forward value plus the reflected 200 microamp meter and is suitablefor general value divided by the forward value ntinus the purpose work. The circuit in fig. 18 uses a 20 reflected value will equal the s.w.r. From the microamp meter without a seriesresistor and is previous measurementswe have: suitable for low power levels only. Note that the 1N2l crystalsare housed in the coupler + 25 l2l- '1oo - '75 = 1.6't..*.r. portion of the connector and that the filter net- 100-25 work is housed in the connector assembly. The unit shown in fig. 2 is recommendedfor A graph may be worked out or taken from a double couplers.As shown, it also usesa 200 handbook so that the meter readings can be con- microamperemeter and thus is not suitable for verted to s.w.r. quickly. It would be most con- very low power measurements.This circuit, with venient. however to calibrate the meter scale its switching, is able to measure forward or directly in s.w.r. just as most commercial meters incident power, reverseor reflectedpower and scales are marked. This would then give you two s.w.r. scales on the meter, power and s.w.r. With the selectorswitch in the FoRwARDposi- The one limitation in this arrangement is that tion the incident power is measured.The circuit if the scale is calibrated so that s.w.r. is to be operationis simple.The incidentr.f. suppliedto read directly from the meter scale when in the the connectorby the coupler is rectified by CRr REFLEcTEDposition, we must be sure that there and filteredby R1 and C1. The pure d.c., cor- was a full scale reading on the ronw.rno position. responding to the incident power, is routed lf the setting of R3 is shifted to provide a full through the switch circuit to R:r, a 10K pot and scale forward reading under different conditions, then to the meter. This pot is not a front panel then the power calibration on FoRWARDls no control but a pre-setadjustment and is used to longer correct. To allow for this a third position calibrate the meter for power measurements.To is added to the switch for the s.w.n. FoRWARD. accuratelycalibrate the power reading function Again, we use a lOK pot br.rtit is placed on the in the ronweno positiona calibratedwatt-meter front panel and can be adjusted for an exact load good for the frequencyinvolved will have fr-rll scale reading in the nu u position. Now, to be acquired.With the unit in a specifictlans- ,,vhen we switch to s.w.R., the fourth position, mitter the pot is generallyadjusted for full scale if the nreter scale is properly calibrated, we may deflectionof the meterwith full power appliecl. read s.w.r. directli,. When the selectorswitch is set in the REVERSE To sunrmarize, the fir'st position, IroRwARD,is position the reflectedvoltage fed to CR:, filtered fCotttittttedon puge I04f

Jonuory,1964 CQ.79 ------1, -:rJtYq - -, NvllgtgJ)ull>

an exclusive feature of The VHF Amateur BY BOB BROWN'I., K?ZSQ ,tNvof you havewritten to ask for more They are differentbecause of ternperaturediffer- discussionson v.h.f. propagation,espe- ences,moistLrre clifferences, or both.The sharper cially concerningour year-roundfriend, the line of demarcation,the more pronounced glound wave. So this mr;nth we'll relinquishour Ihe effect.Radio wavestransmitted at an angle place of qr.restionablehonor to the other ham- fron-rthe surfaceof the earthare bent back and member of the family, Red. K2ZSP, for his views thus are received at a greater than normal on the subject. distance. Any discirssion of v.h.f. propagation shoulcl Extendedground wave occurs nlost frequently properly start with tropospheric conditions. duringthe warrler nlonths,bLlt it doeshappen in Tropospheric propagation is our most common the winter. Here's a typical example: In the form of v.h.f. phenomena and should be under- earll' morning hours the sun's rays strike the stood before moving to the study of other types. upperatmosphere first. Its ternperaturerises be- "Tropo" takes place in that part of the earth's fore the air near the ground warms.These un- atmosphere nearest to us. from earth to a dis- like massescause bending of the v.h.f. signal. tance of about six miles. A1l our storms. weather A similarcondition is true nearsunset and some- and atmospheric changes as we see them affect times continuesfor severalhours. As the sun this propagation. Thus, it is sometimes called sets,the lower atmospherecools while at higher the weather layer. levels the sun is still shining.Here again we Tropo could be truthfully called tropospheric have two unlike masses.A dissimilarityin the bending. The change in direction of a radio wave moisture contained in each mass further in- could be illustrated by comparison with light creasesthe troposphericbending. It is possible waves. Let's look back to the time when as for this bendingto be causedby either the tem- youngsters we tried to hit fish in a brook and perature or moisture differencesindividualll'. didn't succeed. We failed not only because of Personalobservation has shown that extended poor aim but also because the fish wasn't wheie groundwave conditionsseem to be more preva- \ we saw it. The light rays reflected from the fish lent during timesof clearweather in the warmer were bent at the boundary between the water and months.Extended ground wave contactson the air, consequently we saw the fish other than at v.h.f. in excessof 500 mileshave been recorded. its true location. Lenses and prisr.t.rsare also er- l\Iore commonly,though. our rangeis extended \ amples of bending of light waves. Just as light over a distanceof one hundredto two hundred waves may be reflected or bent, so nray v.h.f. rnilesdepending on the station equipmentand radio waves. frequency. The ternr ground rvave is, of cotrrse, a mis- You as an active v.h.f. man can enjoy ex- nomer and probably is a carr-v-over from lorv tendedground wave furlher by arrangingyour \ frequency work; however. the term has come into time on the air to conform to timeswhen trooo general use on v.h.f. to denote an extension of work is at its best. the norrnai range of transmission and reception 144 Mc Reports over several hundred miles. depending on fre- quency. Lately however, it seems that this cotr- Word from Brockton. lVlassachusetts,has it \ "extenderl dition has come to be known as that KN I ETN'Ihas now workedall New England ground wave" over the air. compared with statesplus New York with just a Twoer and 2 "ground wave," which seems to infer norrnal elementbeam. A newrecord'l During lateAugust working radius. So rather than to conrplicate and early SeptemberBob worked W IBXM existing terminology, we'll confine our discussion (Nashua. N.H.). WICMX (Mt. Greylock, to extended ground wave. This extended ground \,Iass.). W I ECN,I/ i (Sanford,Me. ), K IHNB / 1 wave is a form of tropospheric bending, most (Dover. Vt.), KINAY/l (Mt. Agemenicus, prevalent in coastal areas, or areas adjacent to Me.), WlQVF (Collinsviile,Conn.), K1UGZ large lakes. Again, the weather element. (Hillsboro,N.H.), KIYCC (Lyndeboro,N.H.), Extended ground wave or tropospheric bend- WB2FKJ/2 (White Plains,N.Y.), and W2KTU ing is caused by temperature inversion, a sharp (E. Marion, New York). K1WHT lets us know difference in moisture content of the upper air that he is soon moving to Monroe, Conn., where masses.or a combination of the two. Remember elevation is far more favorable. In spite of his the example of the bending of light waves at l5 ft. abovesea level height in Westport,Conn., the surface of the water? Here the light waves during Septemberhe still managedto latch on to passed from one substance to a completely dif- KINAY/1. w3rzy 13. KN3VEQ, KrrEDl4, ferent one. At that point a bending of the light and K8UOZ/8. The presentrig is homebrew, waves took place. Something sirnilar happens running 100 watts to an 8298, wilh a 4l7A during tropospheric bending. The two dissimilar converterinto an R-383.Antenna is a 16element substancesare, of course.part of the atmosphere. Yagi. KlWHT has just completedan automatic c.w. keyerwith all keyingtaped in advancewith +Tlte VItF Antateur,300 W. 43rd St., N.Y., N.Y. 10036. Dlansto use it for meteor scatterwork from the

80 r €Q o Jonuory, 1964 new Q"I'H.Also in the works is a p.p.4X250 rig. We understandhe will also run it on s.s.b..and on a.m. will havea p.p. parallelmodr"rlator with '',NSTATUNE" four 8l3sl At the new QTH he'll be enrploying two 120ft. towers-one for six and one for two. "New Arnoldadds, equipmentincludes a URT-9 transnritterthat is crystalcontrolled on 220 and 432 mc with a pair of 4X I -50Asin thefinal driven by another4Xl-50A. This is cornpletewith I l0 and 220 v.a.c.supply and is the nicestsurplus g/ ever for the seriousv.h.f.er." BernieWelch, WB2CCO, at Plattsburg,New -g*/* "J" York. is now usinga new l6 element beam and is highly impressedwith the results.I guess COMPLETE you would be. too, if you'd worked KICRN 5() rvlc. (Cumberland,R.l.); K3CpR (Lemont, Pa.); K8AXU (Sistersville.W.Va.), and K8PBA TRANSMITTER (Ypsilanti.Mich.) all duringSeptember! WB2- DESIGNEDBY CCO would appreciateskeds any night-c.w. or F. E. IADD, W2IDZ a.nr.-with any station. .lust write. WB2CLN tells us that he, too, caught the SeptemberDX from his FlLrshing,New York, QTH. Stations workedincluded Wls GYE and NCL. Kls CYW. OOR. SUl. WHS, wHT, WYE, ZZF ll:. K3s IPM/3, KUB;W3sLML, Ot/3 andWJC/3. All wereon a.m. "l thoughtI would drop a few linesto let the v.h.f.ersknow what was being heard here on September9th," sez W3LST of Oil City. Pa. Joe'sIist includes W1s JSM, PYN, RJA.KICRN; W2s AOC, BLV. HJS, JSM. LMl. LVQ. NCF. SOK. ROA. UTH. WZR, YCO, ZRG; K2s GUG. (sideband); LOK, UHK W4s BUZ, FSO. FJ. WHAT ONE AUTHORITY HHK, RFR. VHH; K.ls EUS.QlF. YYJ. WA.{- DKU; W8s ARH. AXR. AXU. BA. BQR.JMX. SAYS ABOUT LCA, MVC. SQY. YIO: K8ZCH: W9s EGH. TVI AND LI'L LULU OII, TGB. WOK: K9GN{C:Wps BKV. DQY. ". KJZ. VE2LA and VE3s AQG and BEK. Joe . . an important contribution to wantsus to mentionthe lack of auroralc.w. si_qs the winning of this tough TVI heardabove 145.0 mc and adclsthat many,many battle, demonstrating that opera- more calls could easily have been tackedonto tion on 50 possible this list had they employedthe clix. Mc. is in com- And as if that were not enough.Gary Fisher, petition with Channel 2." . . . K9WZB, of New Carlisle,Indiana. sent in his "One list,too. Gary's DX (worked)takes in K2s KGN, common causeof TVI, radi- LOK; WA2GHN; W3s CSA. CLC. PGVI ation of unwanted oscillator or K3BLM: W4VCJ:WA.+EI-H: WOs EOU. CCO. exciter harmonics that fall in the LFE, RVA. RWC; WA0s BUS and FDY. anrl low TV channels,is eliminated by VE3AlU. K9WZtsruns [i0 wattson l4-5.007nrc designingthe 6BH6 v.f.o. c.w. (70 wattsinput on a.nr.) into 20 elements so that Lrp 70 ft. WttAOI-: and KttVNlA arc worketl it can operate stably with its grid regulirrlyon sketls. circuit on 25 to 27 Mc., instead of the lower frequencies generally 50 Mc News used." Harold Luncl,VP7CX, writeswith newsfrom "l San Salvador,Bahanrzis: was very pleasedto work you and the restof the gang up that way -l-his Frice:$225.00 through your dealer. Iast night (Septemberl.lth). is the first bandopening I've haclsince August 2.lth. Ancl Schematicand full particularsavailable on request. it couldn'thave conreat a hettertime! Ilancl Dealerinquiries invited. conditionswere vefy poor tlurinuthe nronthuf -l Augusthere. he bestopening was on ArrgustII TOR 'NfORMAI/ON, WR'IE when about l0 stationsin lhe l-l--s-8-9-0call WHIPPANY LABORATORIES,Inc. areaswere worked. N4ywife rvasdorvn visiting 'I during August 20-?"9,so was not on the air 275Bloomfield Ave., West Coldwell, N.J. lCorttinuedon puge 1051 Ior further infornralion, check ntrnrbcr 24, on paqe I10 Jonuory, I 964 . CQrSl fIrrrF E3.(OItrrrtD]gED an exclusive feature of The VHF Amateur

BY ALLEN KATZ'''. KzUYH q lrv is not the raresight it oncewas. Over the pastfew yearsthe ranksof the video I addictshave swelledtremendouslv. Whv I then, you ask. is 440 mc not bustling with strangely buzzing 8 mc wide carriers? The an- ,-J.o swer is not hard to find. Interest in amateur television has been around for years. There are even some stout fellows who have been orr for years. However, the vast major- , ity preferred to believe that television was too expensive, too complicated, etc. Many of these Fig. l-Reflection of roys from o point source ol the quite reasons were valid at the time. Anyhow, focol point of o porobolic reflector. back in 1957 interest in ham TV started to pick t rupas it had done in the past along what seemsto to tune 440 mc with little effort. Many require i be a never-ending wave of ups and downs. Some only adjustment of the oscillator padder. But I have even tried to relate these spasmodic pulses don't stop here; put a good pre-amp ahead of it. of activity to the I I year solar cycle. This time, A lot of fellows are using 416B's or better. I am h however, things were different. Possibly it was sllre many of you have ideas to add to this. Let's S the advent of commercial TV gear or the flying hear from you. E spot scanner. alias the B&K analysis. No one c Porobolic Refleclors knows for sure, but TV activity has been climb- a for ing ever since. Or should we say video activity. We have received several requests some b The prin- I for one tend to associate amateur TV with a elementary parabolic antenna theory. Si parabolic really quite whole station. and this is just where the prescnt ciple behind the antenna is most amateursi trend is deficient. Many of the newcomers (ex. simple. and probably familiar to lot misunderstand- perimenting with the most up-to-date amateur !et there does seem to be a of tr the dish an- emission) have tlansmitters and receivers which ing. The usual way of explaining is in terms of light. When a look like they were desi-enedin the dark ages. tenna's operation vi mirror. it is reflected very This fact explains why rve receive fine reports light beam shines on a rh much the same way a radio wave is reffected from stationslike Ceolge. w3ZFW, whe recentll' in flat rnetal sutface. The angle of incidence rvorked 6-s nriles plus on -+{0 ATV and heartl bl a c is equal to the angle of reflection. The sanle ef- talk from other Video anrateurswhtt can not work c( fect is true for a t'adio *'ave. A source of light out of their backl'ards. Sonte of these fellou's sk (a light bulb or a dipole in the case of raclitr Irrrc erert srrggesteclgetting penlti\\ion t() ()pel'- o( ri,rves) enrits light in all directions. Consicler rte with reduced bandpasson two nteters. I don't ni rvhat rvould happen if we ptrt a rnirror behind knorv about vour area, bttt dorvn here even the n1 our light bulb bent in sr-tcha way that every top two nregacyclesare rlaln crorvded rvith local hi light ray which hits it would be reflected in the sh nets. RTTY. and civil defenseopefation. Can -vort same direction (see fig. I ). A parabolic reflector t\4 inragine a few I mc TV signals on during a state has just such a surface; rvhen a point source of an RACES drill'.'But what are these fello$s tfying wave energy is placed at its focal point, parallel 50 to buy in the first place) Do they think they can rays should theoretically' be radiated. This case an get nruch further on two meters with a ti watt of infinite gain can. of course, not be met in fo of output and no r.f. stage on their converter? actual practice. The biggest stumbling block to scl All this and greatly reduced resolution too. These its attainment is the necessityof a poirtt source' OV fellows are just not giving u.h.f. a chance. Since all radio waves have a finite wavelength' we You know, it is not reaily hard to get a good a point source can never be reached. The diver- ho video signal r.f.-wise on 440 mc. In fact you don't gence of light rays from an auto's headlights ha have to be crystal controllcd. With T'V's cven (parabolic reflector) is an example of this fact. gr( 6 mc l-randpassa self-excited oscillator is good In the radio spcctrum this obstacle bccomes even Ca providcd good engineering practiccs are cnough, morc pronounced. Howevcr, we do have a way mechanical and clectrical. And followed-both out. As a pzrrabolicreflector is made larger and mechanical. No unshielded we do stress the larger, the radiating element will look smaller are needed' although a 6J6 flimsy 6J6 oscillators and smaller relative to the reflector. or in other with fine stability if care is can be made to work words it will act more and more like a point with a conventional taken. Follow the oscillator sr)urce. I.F (You know lhe kw power po$ arrplifier or buffer. Using this knowledge and u little cotllnlon level is in eflect on.1-10 mc. too.) As for a re- refl sense.a good gairr estinlate can be made of the 11u \'l ceiver. most u.h.f. TV converters can be tnade practicality of using a parabolic antenna on any for instance, a 12 foot PAI 48 Cuurbcrland Avcnue, Verona, New Jcrsey 07462' particular band. Take,

82oCQ Jcrnuory, I 964 dish; on two nreters a half wave dipole (about 3 feet) is one-quarter of the reflector's diameter. Not a verl good point source. and the gain cguation shows -12 db. We might as rvell have EAN used a plane reflector of the same size! On 431 mc where a half wave dipole is about one tenth the diameter. a little better approximation is obtained and a gain of 23 db is possible. If we go really high in values gain frequencl', for be- 6 & 2 l\4eter corne estronornical.On l0 knrc a l2 foot

\.\\ilt...... -{ DD It F]SS ( t1'\- ;;i; ,.;,,;;

For frrrthel infornlation, check nrrrrrber 26. on page 110 Jonucry, 1964 o CQ o83 Becauseyou've gotto $[[ it to[t[l[[l[ it Trop Anlenns lfront Pase 391 capacitance bridge; or, if this is not availabie, you a grid dip meter can be used. ...wewillsend atRE[ sample! If you use a grid dip metet, a 100 mmf mica capacitor can be connected across the ends of any convenient coil and the resonant point found on the grid dipper. The capacitor is then dis- connected and the tubular thinwall capacitor is inserted in its place. By carefully adjusting the capacitance the same setting on the grid dipper can be made to dip. During this operation be sure that you do not have stray hand capacitance or metal in the immediate vicinity. Otherwise the setting will be inaccurate and the trap will be tuned to a wrong frequencY. After the tubular capacitor has been adjusted mark the position and drill a hole for a 10-32 screw exactly one inch from each end. These screws will serve to fix the capacitor to the dowel and also will be used as terminals for each end of the indttctor. To make the inductor gct a piece of 514 enameled wire about 12 to 15 feet long. One end should be clamped in a vise and the wire stretched to remove all kinks. Now' using a cylinder of about 1tr^" in diameter close wind I REI|OI.IJTIOIIIRY]IIIT||'|EII|OO IOR the entire length of the wire on the cylinder. When the tension is released the wire will " II|AR|(I]IOEI-IGIROIIIC IOUIPi'|IIII spring out so that it is jrrst under l7z diameter. Simplytry the sample.You'll agree "lnstant Lettering ls the A coil form of clear plastic, lan-rinatedbakelite, easiest,quickest way t0 get professionallettering you've or other insulating material 2" long can be used seen. lettersprinted on specralplastic ever Self-adhesive a and 17 turns of the wire are carefully rvorked sheetare just presseddown int0 positi0n0n anyequipment, on each end to drawing,schematic, etc. Transfersinstantly to practically over the form, allowing enough any surface.Looks like printing. make connection with the 10-32 screws. These are uniformiy spaced over exactly lVz" fot an AVAILABTEIN THE FOLTOWINGSETS inductance of 5 ph. This, in parallel with the 100 TITLESF(}R ELECTRI)NIC EOUIPMENT mmf capacitor will tune to 7200 kc. For con- the trap refer to the accot.n- . . . this set contains 24 sheets. . . thousands of preprinted struction details of titles... researchedto give you up to 95% of all electronic panying photographs. On each end a small hole panel marking.For labeling,marking, titling, all electronic is drillecl through both the wood and thin wall control panels,drawings, prototypes, etc. the copperweld wire. Both ends of the N0.958 - Black...... $4.95 N0.959 - white...... t4.95 for #14 trap are tinned for a good electrical connection. TERMINAL& CHASSIS MARKING KIT WeoiherProofing . . . 24 sheets of all the necessaryletters, letter combinations In order to provide all weather operation the printed and numeralsf0r markingchassis, circuitand terminal be waterproofed. This can be done boards,rotating components,etc. coil should in several ways. The coil is spaced equally from No.966 - Black...... $4.95 N0.967- White...... $4.95 the thin wall using strips from a polyethylene squeeze bottie and various materials can be used METER& DIAL MARKING KIT for waterproofing. Tar from an old transformer . . . 12 sheets (5" x 7"\ in black, Ied and white . . . containing lvorked well, provided that it was not too hot. graduation arcs,dial patterns,lines, dots, wedges, lines,switch worked well symbols,alphabets and numeralsfor markingstandard and spe- A mixture of paraffin and beeswax cial rotary tap switches, potentiometers,prototype and espe- but showed a slight tendency to crack in cold cially calibrated meter dials. Color contrast on scales and winters. Our best results rvere with switchessimplifying usage of complexinstruments. Minnesota epoxy cement which comes in two tubes and N0. 958- Meter& DialMarking Kit...... t4.95 an can be purchased in most hardware stores. The Now. . . with thesethree kits you can completelymark prototype Borden Company makes a two component Epoxy electronicequipment from componentparts to finishedcontrol Fihners glue as does the Welwood Company. Danel and meters. This can be loaded with whiting (calcium car- In stock at ALLIED,NEWARK, TAFAYETTE, ARRoW, HARRISoN, bonate) to increase the amount, lower the cost' FEDERATEDand other leadingdistributors or direct. and eliminate the running or sagging properties of the glue. For those amateurs employed in electrical manufacturing firms the possibility rrlr[[l[l( coRPoRrTrorlexists of procuring the raw epoxy resins and 63 Tlst ST. - DEPT. 612-1 . GUTTENBERG, NEw JERSEY hardeners. Shell's Epon 828 and General Mills SEND FOR FREE FOLDER AND SAMPLE Versamid 140 in eclual proportions worked well. For further information, check number 27, on page 110 84 o CQ o Jonuory, 1964 K*r'f-W",|

ROTR|INWHISPER FAII The fan that moves 60 cu. ft. of air per minute . . . while running so silently you have to look to_seeif it's running! Removes heat to save your rig, yet uses only 7 watts, Measures 41/2"squarcbv 1V2', deep. Has run for years in computersand other commer- cial equipmentwithout atten- MODELK COiIVERTERBY ATTTRONICS.IIOWARD- tion - lifetime lubricated. Operates on 110-120V. Audio input, Outout jacks on front for Magnet A.C. and Keyboard. Keyer Tube keys magnet direiily AmateurNet...... 914.85 (no relay).Loop and bias suppliesbuilt-in. Wired sockets provided in converter for Dolar relav for keying transmitter, or external relai may be used, EXTRA-SENSITIVEHEAD Distortioncontrol on panel,Autom-atic Mark hold PHONES in absence of signaf, Copies any shift 1OOto BYSUPEREX 1,000 cycles. Model K for Rack 600 ohm impedancei extra- Mounting $189.00 high sensitivity for weak sig- Cabinet ...... $14.s0 nals and hard-to-readstations .. . reproduction is crisp, free of distortion. . . uneoualled wearing comfort over long use. Amateur Headphone Model AP.S. Amateur Net ...... $24.95

In conventionalignition systems,high voltageat the spark plugs falls off over 5070 as ensine speeds increase.The result is a weak soark causing incompletecombustion, loss of power, fouled_plu.gs.andpoor.gas mileage.The .iuggeci AEU // ereclrontctgntlton Increasesand main- Complete, factory wired, AEC 77 system for in- tains maximum high voltageoutput at the spark stallation in all 6- or l2-volt vehicieswith nep- plugs with no high voltagefall-off at any speed. ative ground. Availablefor positiveground. Every AEC unit uses high quality comDonents Increasespower up to 10o/o. . . assuresfast starts such as Delcohigh voltage15 amperetrahsistors a_t-low end . . . full power at high rpm , . . up to and Motorola 50 watt zener diodes. Everv AEC 2OVomore mpg. . . increasesspark plug life 3 to lgnition coil is wound with Formvar insulated 5 times over normal. . . insures75,000 mile ooint wire, oil impregnatedand hermetically- sealed life . . . gives;nstant starting in sub-zeroweither for maximum insulationand cooling. . ,-.eliminates frequent tune-ups, . . simple 20 Complgte-AEC77, tactory wired, with 400:1 coit minute installation by anyone. .. cures ignition rctio, 6/ 12 volts ...... 939.95 problems . . . MOBILE RADIO lcNlTtON INTER- Please add 75d for postage and handlins. FERENCEREDUCED. 25% deposit on COD's.

For further information. check ntrntber.23, on page 110 Jonuory, r964 Mod6l 423 Anlenno Construcfion Dimensionsof the antennaare as follows: A center insulator is fed on each side with the center and braid, respectively,of a 50 ohm coax cable. Exactly 31 feet 4 incheson each side of the center of the insulator, install the traps with the larger thin wall toward the center to pre- vent water from collectingaround the wooden dowel. The outer sectionsof the antennaextentl beyond each trap 22 teet for a total antennit length of 108 feet. This is shown in fig. L Theoretically the center of a dipole should SOLVE YOUR have an impedanceof 72 ohms. However, most hams do not place their antennashigh enough TVI PROBLEMS... to be l/a wave length above ground, and as a with fhese B&W 6-Meter result the impedance is usually lower and 52 low Poss Filters ohms gives a better match. A B&lll low p6ss filtrr installed in the coaxial lead Feeding with RG-8/U coax the best feeder of your transmitterwill stop the radiationof spurious length was found to vary with location but !nd h.rmonic signals ryhich int€rforo with TV r€cep. tion. Thcac two liltrrs are usable through the fra- around 70 feet seemedto give the lowests.w.r. quoncy ranSo of 30 lo 54 MC in amateur ond on all bands. commercial installations. ilodcl il23 is a 3 section filter for transmitters uD As in all antennas, maximum efficiency is to 100 watts output. lt reduces spurious and har. available only at one frequency in each band, monic signals higher th.n 62 MC by at lsast 50 DB (r rcduction of over 100,000 times). and the s.w.r. will increaseas the transmitter is nod.l 127 is a 5 seetion filter for transmitlers uD tuned farther from the resonant point. It does to I KW output. lt reduces spurious and harmonic signals higher than 6? MC by morc than 60 DB not changemuch for abotrt100 kc on eachside (a reduction of I million tims). of the resonantfrequency. lf you are interestedin operationin the c.w. ORDTRIIIR(IUOH T(IUR T(}ilt DrTNBUI(IR portion of the bands the center sectionsshould BARKER. & !\IILLIAMSON, fnc. each be made two feet longer and the end sec- BRISTOL,PENNSYLVANIA tions shouldbe made three feet longer for a total length of 118 feet. The trap should also be For further information, check number 5, on page 110 tuned to 105 mmf before winding the induct- ances.This will give a much lower s.w.r. in the area of the bands you are most interestedin. This antenna offers an interesting and inex- pensive building project and will allow the average ham with limited space and budget a ffiffiffi chance to improve his transmitting efficiency GIANT ]IEW CATATOG and operatingenjoYment. I Solution: Dec. Polcrrgrqm Puzzle Arrows denote hidden words

D Rush me FREE 1964 B-A Catalog. Name ...... ,...... ,,....

Address..,.,

l------l For further information, check number 7, on page 110 86 r CQ o Jonuory, 1964 TERRYSTERMAN W9DIA

Shown hereis Pete,K9A|F, our trqffic mqnqger.Pelers in chorge of oll outgoing shipments. Reod whql he hos lo soy oboul NATIONAL'S new frons- ceiver NCX-3-thot you Gonown lot only "l hove on NCX-3 in my cor ond I think it's the best tronsceiver in its price closs,A 7 lot of people must ogree with me, becouse I ship more NCX-3's o week thon I do $l3't oll other tronsceivers combined. See you on 80, 40, or 20 meters, Order your o ^onth.NCX-3 todoy from Terry, so thot I con see ihot it is properly shipped out."

JUST$r3.r7 A MONTH.LOOK AT rOW PAYMENTSAFTER gS.OO DOWN PRICE 3-YRS. PRICE 3.YRS. XCU-27colit:r.lor PRICE 6 & 2 mrr.VFO 549.95 91.62 NCX-3Tronsceiver 369.00 13.14 NC-140,NC-r90, NC.60rcvr 59.95 1.98 NCX-A AC P/S I r O.OO 3.79 NCX-3,NC-303 ond NC.l2l rcvr 129.95 4.69 NCX-D DC P/S I t 9.95 4. I 5 HRO.60 26.60 r89.9s 6-67 NC-303 rcvr 449.OO t 6.03 NTS-3spkr for NC-I 40, 2t9.95 7.76 NC-400 rcvr 895.OO 32.r3 NC-r90 & NC-220 t9.95 62t 279.95 9.92 HRO-60rcvr 975.OO 35.O2 NTS-2spkr for NC-303 2I.95 670 Terms Above Apply To Three Yeor Controct Minimum Order ihot con be finonced for I yeor is $60; 2 yeors,$'l 20; 3 yeors,$l 80. BE SURETO SENDFOR RECONDITIONED rr--rrrr-al BULIETIN. Blc BARGAINS!!! ,r llulpoRTANT! 5.n1arr ncil orderrsnd _ I lnquiricr lot letry, W9DIA 6t our tilwcukii f I tforc, c/'o OGtorlmcnt (C ) I Get Todoy' No obligqtion trrrr, ATIATE U R t oonurrQuore , - | hove to troda fwhqf,s your deol?) r SUPPTY r TllIlllJMllllll! r l,*.n*ffi! t t"" [ 2 Yeorc 3 Yeors I Pto?.%3;.nF E I tli"i,'"t^"::i'.'"xJ;i['ifJfftli"i,'"d^"::ir.'"xJ;i['ifJ$:.$".1:,'i::,$J'1ii:r.i.{:*m,iil#[tl I order: Nome, oddres, oge liTS':i'Tl'Jf,I Ho;€i Toriiom "ff i:?;.Jfi.'iri.ii :,ti;3-""i,1,$'S:iirir'uijii"s-i;;.T 'iIi; I employed?-Own cqr?-iho Urvins-li;?-':[s'r$!iil Til; . to tive.cre-ditreferences, The more informotion" 6yw I 5*:i#?1i5fffT""""'"8",$:t;ll:l$,f t I Dld T{SI}S I I I n*, I l;; I -l @ for lotcst reconditioned Lrur"tr-u.ultt I-rrrrrrrrJ !Check bulletin. For further information, check number 30, on page 110 Jonuory, 1964 o CQ o 87 Lellers llrorrr puge20) otlrcr hams around that I know are more active tllan I. Even though we are f.m, we have, on a few occasions, worked a.m. stations in Alabama, Ohio, Indiana and Louisiana. F.m. stations in the state of Wasllington have also been worked. I cordially invite you to tune your six-meter receiver up to the upper portion of the band and listen for us Rarely does an evening go by that some of us aren't on. Ray Hilborn, KORXR Box 404 Colby, Kansas SER,IES F. nr. on six mcters has contribul.eda great deal in popu- lating the upper end of the band. We hope it will COAXIA! continue.-8.J. Sirr RElAYS 2'A13.Att Ve 201 |-{r. th.n 9 or, Announcemgnls lt'rontPuge 4 StendardModels, AC or DC, DK6o-c2c loaded with plenty of gcar. Tlre usual swimming, water UHF,N, 8NC, TNC or C Conn. skiing, tishing,ctc. is also included. For additional infor- mation. rates.c/c.. write Coral Cliff Hotel, Santa Martha outstanding favorite for amateurs . versalile com- Bay, Curacao, Neth. Ant. binations for it)dustrialsl Lou \tS$R less than 1.15i1 from 0 to 500 mc. Low LOSSES High Contact ?? Pressures- LOw CROSS-TALK through use of patented Chqnge In Cqnqdicn Form 4l'2052 ( ''isolated connector" arrangement. HIGH POWER RAT.. contcmplating a trip to Canada should quieter U. S. amaicurs ING. All coils encapsuled in epoxy resin for l, I operation and resistance to moisture. be made au,areof a procedural clrangeeffective April 1964. Applications after this date will be processed ,, +UNCoNDITIoNAL * All Relays in weatherproof through the "Regional Director of Air Services, Dept. ( CUARANTEEtor boxes tor exterior installation. proposed operation. one year. (we o{ Transport" nearest the area of wlll repalr lf A list ot Regional Directors will be forwarded with Form * Ganged, multiplo tsulty wlthin.l Position 41-2052when application is made. year.) Jwitch errangement svsilable tor reEote cmtrol selectron I + See one ol our Lqsers 700 deelers end of antennss. (N.Y. dlstrlbutors ln U. STANDARD RELAYST DK60, DK60-G, The Jamaica ) Amateur UHF club will have a S, and Canada lor DK60-2C and DK60-G2C - working Laser on demonstration at its meeting of Friday, catalog shccts or January 10. The speaker will be WA2JYR. Club QTH is it)) wrlte: pRlcEDFRoM...$12,45 Central Queens YMCA,89-25 Parsons Blvd., Jamaica, D N. Y. W2QPQ is club sect'y and will fill you in on transportation directions. u For further information, check number 32, on page 110 Philcdelphic The South PhiladelphiaAmateur Radio Klub (SPARK) JUST will hold a swap and shop/auction on Sunday, January 5. 1964 at the Childs School, 17th & Tasker Sts., Phila., G'F is 50C and all are welcome. *) Pa. Admission Tropicol Hcmboree The fiIth annual Tropical Hamboree will be held in DOWN Miami. Florida on Januarv 18-19 at the Municipal Auditorium, Bayfront Park. The Dade Radio Club, Inc. qnd $9.95 is sponsoring the eyent and will be pleased to send you details. Their QTH is Bor 73, Biscayne Annex, Miami, A MONTH Florida. 33152. delivers q brond new Squelch Stobilizqtion flrortt puge 31f DRAKE2 B RECEIVERIf the fixed grid return of fig. 5,A is replacecl arrt"o".lj::1,:t.::*'o'l,T:l:,,,., b! a potentionteter, as in fig. .58, sqtrelch sensi- Inere's , ,. I tivity can be adjusterl fronr nraxinrttm to zero ';;li; nt will. I zsR.,. ".. rl;;:; ;r;?; ii;]; I in anla- I 2AC Calibrator .. .. 16.S5 1.62 .81 .54 I In extrenre cases.seldom encountered .81 '!t I 2BS Sneaker ...... rri.9505 3r.6253 t'76 r''.I teur work, where il is desired to vary the squelch '^?:,;lTi:," se very uide range, a d.c. bias l I sensitivityover a I TR-3 Transc€iver...... 550.00 40.9i 27.25 19.68I can be applied to the conlrol tube cathode, as in I RV-3 v F o ...... 7s.0s $.87 3.74 2.70 | fig. 5C. This requires the addition of a d.c. sup- I M-S3 Speaker .. ... 19.95 2.28 t.l4 .76 | I AC-3 SuDply .. 79.95 7.32 3.99 2.88 I ply to the system. but permits increasing the I DC-3 Surpry.. .. r29.9J il.eo 6.49.' "4.69 .'1 I squelch sensitivity considerably. With standard tr.rbes,the on-off differential of a sqtrelch so i'I ;AmAt ; ;; EUr ;; ;;;#;ELEUTnUNtU ; :#DUTTLY I'j - i.1,1."Urpr, U = Lisbon Ave., Milwaukee Wis, 0.1 volt! j - 3832 Wpst 8. I biased can be as small as I l ' rrl: ltrr.lrrr' ,r l,rilk I Fl,'l, -e r; l,l,,.ir rlrr'l ! NLrmerousother coupling methods and cir- Nill I'rrlrrr'' r'r)l)j \-'rtr Y,irr. s I I |rt - I l: []:l )c.rri. t cuits are available for special installations. btrl ll ;$ I ht\e lo lrrLle..... with voltage regtrlttion ancl I I a sin-rplesqr,relch. I (lerl?. \\'hit , Ioui I diode coupling where needed. gives maxirlun.r l_, Naruc minimum cost for most i : operating convenienceat .\ll(lffss I I amateur and ordinary commercial installa- I t,itx... Zrnr:...... Sttrtc .... - tlons. I l.atataa t rr.t I a arrrrt ttiarEarrrr!tr Irrrr further infornration. cher:k ttrrntber:i1, on pagc L10 88 o CQ r Jcnuory, 1964 MAKEYOUR HOBBY YOURPROFESSION

lf you live in colorfulNew Englandor in sunny Californiaor anywherein betweenand you are interestedin high frequencyand rn ultra high frequencyradio then we are inter' ested in you. OUR BUSINESSIS THE DESIGNOF VERYHIGH FREQUENCYAND ULTRAHIGH FREQUENCYTUNTNG DEVTCES. rT rS AN IMPORTANTAND STIMULATINGFIELD. lf you area trainedengineer now doingsuch work we can offera positionprofessionally and economicallysatisfying. Thesevarious permanent assignments are in the areaof VHF and UHF TV tuner devel' opment conceptsfor mechanicallyor electricallyexperienced designers and for support positionsto them. lf you feel you understandhigh frequenciesand would like to work on the designof tuning deviceswith a leadingelectronic component manufacturer write and tell us. Write Mr. K. E. Tuttle givingdetails of experienceand training. F. \N. Sickles Division GeneralInstrument CorPoration 165 FrontStreet, Chicopee, Mass.

'\zarrr ra'<^-al ^t- tention i.s o'rmust't ot WRL. Our 18 hms qre qt your service tr1 doy or nite. Write, phone, or wire, w Leo l. Meyerson, WPGFQ

Postpald!* ..MULTI-PAK'' PSA-63 TECH-CEIVER 64 $l 5es UniversolAC P.S.Srli- 6 Meter Trqn sceiver-Mobi lc- F ixed- con rectlflers. Ducl HV Compocl, Size;5"H,9lt' W,6"D. 5W. .Jfr. input with BMc xtols, PTT. Rec. 'luv, 600v./300v @ 300Mo, $39e5 210W. Mox. Bias 0-90 : .. tunes 49-54 t\.'{c,AVC, ANL, stoble, VAC. AIso ovoilqble i2495K,. selective, speqker. Wt, 9 lbs. Less P.S. Kit $39.95 customtzeo lor Jwqn, G76, etc. Wt. 15 lbs. Wired $39.95. PREAMPLIFIER DB-68 ANTENNA TUNNER Wired Preselector - 6-80 Meterr. 6 triode tube sections for overoge 24DB MK.II Mini-Motcher MM-100 goin. Tunoble, built-in llSvAC P.S-, coqx or twin lecd, illuminqted diql' WVG 6%x6-5/8x7%t'. Stl. wt. 10 lbs' I yr' pqrts wqrr@ty. WRL Impolt, $3995 WORLD RADIO LABORATORIES,lnc.

All Bond Verticol -Self supporting. Tunes to Leo, s,.ll mc ,lire.t [] n(.r'kr' [ . C l.1uili1 li"r n -1-'] he qny qmoteur bqnd I0 through 80 meters' De- -h- -Air l?ox D Njulti-l"rk f ... n I" i i\'-r tA Ll Add signed to be ied with 52 ohm cooxiql cqble. to my ! (llre.k en.losed U Ldditionol Mqximum power lK\^,' AM, 2KW PF|P. Overqll Ohdrq-A-Irl.rn infornrotiolr o!r-, FOB WRL C 12 heiqht 1& ft. *Postpoid (Conrinentol USA) Call - WRITE FOR OUR FREE FLYER & LIST OF Na me ovER 1,0o0PIEcES oF QUALITY RECON- Addra DITIONEDEQUIPMENT - TERMS- TRADES City Stuted

ilurillxl l1), (,rl Irge IllJ

Jonuory,1964 r CQ 89 GETYtlUR I'IEW Comtrqn jron page 381 Listening tests indicated no bothersome clis- tortion; in fact. measurementsmade at normal voice levelsindicated 47o distortion at 400 c.o.s.. swAlr 1.4/aat 1.000c.p.s. and 0.857oat 2.000c.p.s. The output level holds closely to within 2 db -240 for a considerablerange of input levels; how- s w ever, the initial impulse of a train of sounds overshootsby about 6 db before the compressor takes hold, an effect often experienced with TerrySterman, a.l.c.systems owner,W9DIA l{OW! also. Observations on an r.f . wattmeter and an LowMonthly Poyments oscilloscopeshowed that whenthe C-ll wasused, lhe avaragetalk power increasedbetween 50 and 7.5percent for a given degreeof pccll modr.rla- oilLY $11.47 tion. The Comtran C-l I ConrpressionAmplifier' sells for $29.95 and is producedby Comtran Associates,Inc., 2847 CropseyAve., Brooklyn 14.N.Y.-W2AEF

Propogolion lfrottt ptrgt'6ll many openings.Eighty metersis expectedto be the optimum bandfor DX conditionsduring the hours of darknessof the fall, winter and spring 3 YEARSTO PAY-ONLY $5 DOWN months.A considerableimprovement is alsoex- pectedon 160meters. This improvementhas al- TerrificTrodes on Single readybeen observed and WlBB reportsthat be- BondSwons - Or ,ANYGeor! tweenSeptember and Novemberof this pastyear he managedto work Here's all you pay each month after $5 Dotyn Payment such exotic DX on 160 meters as 5N2JKO. KIKSH/KG6. HamNet 3 Years ZS2FM. (r1 q7 VE2UQ/VE8 sw240 ...... $320.00 and dozens of Europeans. It is SW 12 DC PowerSupply ...... 115.00 3.97 very possiblethat propagationconditions on 160 SW117 AC PowerSupply 95.00 3.25 meters during the hours of darkness may be better during the new year than they have ever GOODNEWS FOR SERVICEMEN been before! 18, 19, 20 yearsold If the radio amateur propagationresearch of the Monroes proves anything, then a continued Normally we can offer financing only to persons 2L years of age or older. However, if you are 18, 19, or 20 years increasein Sporadie-E short-skip openings can old and in the seruice, have good credit relations and be expectedduring 1964,especially between late can pay 2Oo/" down, we can offer you our financing plan. May and early September.Fewer auroral-type openings,however, are expectedto occur during the new year, since the sun is going through a AftIATEUR quiet period as solar activity continues to de- crease. ELECTROlITCShortwave propagation conditions during the coming year, therefore,are expectedto be some- 5UPPlY what poorer on 10, 15 and 20 meters,but im- proved on 40, 80 and 160 meters.Fewer auroral- 3832West lishon Avenue type MILWAUKEEI, WISC0NSIN . WEst 3-3262 ionospheric openings are expected, but VISIT0R PHoNEdo not write-ourbranch stores record-breaking Sporadic-E propagation may (theyhave no mailorder facilities) take place during the late spring and summer CHICAGO3I, ILL. I ORLANDO. FLORIDA 6450 Milwaukee Avp. | 23 Azalea Park Sh. Center months. R0dney 3-t030 | Phone 227-8231 1964will alsobe "The International Frrrrrr-r Quiet Sun I IMPORTANT! Be sur€to s€ndall mailorders ! Year."2 The IQSY is a follow-up to the Interna- I and inquiriest0 MILWAUKEEST0RE, Dept.C : tional Ceophysical Year. The IGY, one of the I tsaz wgst LrsBoN AvENUE, MTLwAUKEE8, wrsc. : T most successful.research programs ever carried Ship me out. took placeduring 1957-58to coincidewith I enclose $ I $ill pS the balance i !C.O.D. Jlt'ear -2years -3Jears peak solar activity. The IQSY has been planned I want to buJ and want to trade to coincide with minimum solar activity, which is expectedto occur sometimebetween late 1964 i r*1T,:-{duress and mid-1965. This new world-wide project, in I CitJ...... Zobe .....State ...... I ! 2Hearsum, D.R., W8LVZ, "IQSY-The Intemational I n Send reconditioneci equipment and sate bulletin : hrrrrr-- Quiet Sun Year", p. 39 Sept. 1963, CO. For {urther infornation, check number 35, on page 110 90 o CQ o Jonuory, 1954 THE CQ HAMI MTART r"ff---"-+T;Tar: coMMANDsETs MOBILEHANDBOOK ffimmffiSSS. reprintE' Anyone who tries to go mobile ffiffitrffi ,. . This is a collectionof *'*'*, without getting this book, should ,' containing all of the available in- t. the think twic€ before going ahead. Bill . "1. ,.' t , lormation on the conversion of "Command" Orr, W6SAI has put everything You popular transmitters and need to know in this book, Build-its receivers into good ham transmitters l, by the dozen . . . solutions to ignition and receivers. Invaluable for Novice, Advanced and i:! problems, keeping the battery charged, Technician. General, noise . . only 82.95 postpaid. Extra class operatorE. 136 fabulous pages'onrv tl'r' postpaid' ilo;li;#*# A" -FSY SIDEBANDHANDBOOK lr, '' : "' V6TNS' CQ LICENSEGUIDE u' ^ ! written by Don S'oner' lo the prep- 3 S$ gt,*" : was almost one futl vear This 212 pages ot cverything tbc Ama- ,:",f i-^1,- : aration of this terrific volume' i.1\qvBvArr teur must have to get bis license i, not a technical book. It explains .- : get and progress toward the general class r sideband showing you how to your ticket. Plus many additional pages ,. l,','i;:,i alonsatons with itir ' '. '. bowhow to keep vour itl : ';-''i::';i:,i of vital information for the bam . rig workingright.. how to know ,::. " operator. All this for only E2.50. '' t- f when it isn't and lots of :ii.] ' ; _bow #;,1" .. i ,o uuito-i, stuff, gadgets, receiving Lh.St'{i: ,, . . *, -1 adaptors, exciters, amplifiers' Price, HHffiS#**l@i onritt'oo' CO ANIHOTOGY COWAN PUBTISHINGCORP. Most amateufs do not have a good Book Division '"''... fil€ of back issues of CO. tlo we've 300 West 43rd Street ------back through the yeafs 1945- -' -'i assembled all in one Place New York 36, N. Y. . ffi ::"111,.,.,olll" ,n", havemade a rastinB 3.oo mostor ANTENNAROUNDUP $ ! ffiffi i :l; i.ru".containing ELECTRONICCIRCUITS HANDBOOK".' 3.00 ! : WW:ri;s , rir, rhese articles have lOng ago bccDbcCD 19.95 fl " UNTIGHTEDGI.O8E ,,, . '-. {,l: ^' price is ^ r:erc tz.u)- | 5.00 il.l.J-.ff"-t . .n sold out. Th€ ATLAS .,. ! l* t.50 l, l*"'l': COMMAND SETS.. tr *iigd*li-i;-..-*.,'; l;; CODERECORD 3.50 tr II'IE NEW RTTY REGUTARroc SHEETS(100) ...... '..'... t.00 u HANDBOOK ssB roc SHEETS(100) r.00 fl t.50 "hard HAM'SINTERPREIER ...., tr of vital and to A treasury TVt HANDBOOK ...... '...--1.75 B get" information. Loaded sith equip- BINDER-YEARWANTED 4.OO ! ment schematicS, adiustment procc- VHF FORTHE RADTOAMATEUR...... 3.50 ! dures, operating Procedurca, etc' A cQ ANTHOtoGY I ...... '.."..'...... '...'.2.00 tr valuable asset to both the beginning cQ ANTHOTOGYll ...... "..3.00 B and the experienced RTTY'er. Special Ht-fl BOOK 2.50 tr section on getting started, all written 3.00 by Byron Kretzman, W2ITP' z well SIDEBANDHANDBOOK tr GUIDE...... '. 2.50 tr koown authority in the ffeld. This cQ UCENSE tor tibrary! SURPTUSSCHEMATICS HAND8OOK.". 2.50 tr book is a must YouI 3.00 Only ,13.95. DX ZONE MAP ! NEW RTTYHANDBOOK...... 3.95 tr IHE RADIO DroDEsouRcE 8ooK...... '... 2.50 tr VHF FOR t.25 AMATEUR usA-cARECORD BooK...... '..'...... tr .NEW" MOBILE HANDBOOK 2.95 tr Yotr can't afford to bo wittrout SIRS:Mv check (moneYorder) for $- new handbook designed this dynamic is enclosed. Pleose send the following il€ms to: witb tle VHF amateur in mind. Filled lrom cover to cover with all new and original construction matcri- al presented so that You ean undcr- stand it. Written bY Frank C, Jonee ior hls W6AJ F , lationally acclaimed City---Zone-Stote- VHF pioneering' Available now tot New York Cily Residentsodd 4a/oSoleg Tox only $3'50.

Jonuory, 1964 o CQ . 9l which scientistsfrom more than -50countries are expected to participate. will provide data to coltl_ plement the researchwork carried out during the 1957 58 ICY. During rhe IeSy, nrany eiper.i- nrents and observations of geoph-vsicalphenorn_ ena, including the ionosphere, which have not gb"/Aqb"6uo^ been possible before due to the high level of solar activity u,ill be made. No doubt. propagation ob- servations made b-v radio amateurs throughout the wor.ldwill play an imporranrrole in the ieSy rt'@rAW as they did during the ICY. y'ouluTY-ENGTNEERED 160 Meter Tests WlBB reportsthe followrng: y' "Reminiscent ouneaLy-coNsTRUcTED and synbolic of the original pioneerlng trens-Atlanriccrossings by Deloy, Schnell,Reinart and Godley in 1921.and held everyyear since 1932.this -vearlyoperatinF acli\ity will be Iteld on 60 mererstltis season on the following Sarrr.lay661pipg5 from 0500-0730 cM i_(-Midnight-2:30 A.M., ESr) , and at other appropri- ate DX times for other than trans-Atlantic DXa December I and 15 (received too lare for publication) January 5 and 19, 1964 February 2 and 16, "During 1964 these tests special efforts will b€ made by all Tl'|.Ilt|OUI{I to €stablish new records on 160 meters. W/VE staiions Chrome plated alloy gteet con. will call CO DX TEST first five minutes of each houi .stru.ction handles any rntenna and then 2nd, 4tl1,6th fiye minute period, etc., listening havlng tt6', 24-thread. in. between. W/VE starions send reports for TESTS tJ W1BB. Working DX on 160 meteri is chattenginganJ $4.45 Nrr ertrrmely interesting, and fltere is a real,"rurd in tha thrill of working DX on this band. nfso aon,t lo.g.i the CO 160 meter c.w. contest scheduled for Januiry (see c0-2750UrrER lt|0ui{T 25-26 W1WY,S coNrESr CAr_ENDARin CO for more information." lor Rctrcctoble Antennas With conditions on 160 meters expected to be ^_^_ DRILLNO belter.during this coming year than ever before, $/.Yc NEr participation t?k"+otln in this year's 160 meter tests may Now-, mount_ your antenne et car roof level-vour for be extremely worthwhile and maximum_ gain- and coverage wittrout troleJ-in rewarding. lt is car top. -lt -tocks antenna positively and won,t diD alsoquite possible that observationsmadJdurins even at.hrgh speed. Attaches quickly and easily tb this year'stest periodsmay prove valuable cara rarn gutter for mounting 9a,' 24-thread an- 16 tenngs. IQSY studies. 73, George,W3ASK

MODET321 page with special Agof ego [t'ront 42] risid type bell joint- And now Monday, 17 June. 0245 cur and a no spring tremendousrun of Ws. I was glad of Nnr this, for the $7.95 @ weatheris crackingup badly. A large swell was rolling into the anchoragefrom the s.s.w. and MODEL232 there were heavy breakersgrowling on the reef. Most of MODET44s with double tapered the baggagehad alreadybien sent back spring and swivel on board. I was now using the 132 foot long BumperMount base, Also with coax ,Fwire (the beam having been connectot. dismantledani $7.95Nrr $8.75Nrr {fbe packed),with the TCS-12.This wasalmost cer- rainlygoing to he nty la:l rlorninc. F()rly-lwoWs in two horrrsani twenlvrltin_ rrtcs.Nothing very inrprcssiveahorrt that. hrrt it was thc bcst I could do. for at tinles therc was sucha pile up it becar-rrea wal[ of solid scream- ing QRM. I wasconstantly frustratetJ bv the kin

4 ELEMENT VEEVEE 6 ELEMENT VEEVEE 8 ELEMENTVEEVEE Gain 5 times. 9ft. Boom Gain 11 times. 17ft. Boom Gain 13 times. 26ft. Boom $r22 $156 $2L2 SPECIAL0FFER! :31^"-""31,',r'i*ii':3}:'J,"#:lg T.",';,[:B"li",',3J'o",l,io''i ysli::il handbook gives full details on the theory, design, and practical operation of these wonderful DX arrays. Deslsned bv a orofessionalengineer and one of the world's leading DX men widely known unde-rthe c-allsigns 5H3Gc, vQ3GC, VQ5GC,VS6CE, G3IAD etc.,VEEVEE is being acclaimed the most significant advance in antenna design in years. Whatever frequencies you favour, 80 thru 2 meters, you will find in these pages a two band inverted vee beam curtain with gains of 15db or mcre, that will put your signals WAY OUT ON TOP. Order your copy today-A gift at $2 Postpaid. Send Money Order to- VEE BEAMS LTD., 22 BROOK RD., MORECAMBE,LANCS., ENGLAND

For further information, check number 34, on page "hard ,,THE NEW RTTY Atreasury ofvital and t0get" information.Ioaded with equipment HANDBOOK" schematics,adjustment procedures, 0p- eratingpr0cedures, etc.A valuable asset to boththe beginning and the experi- encedRTTY'er. Special secti0n 0ngetting started,all written by Byron Kretzman, W2JTP,a well known authority in the field.This book isa must for your library! ..:lL::::.__ CQ Mogqzine 300 WEST 43rd STREET New York 36, N. Y.

SIRS: My check (money order) for $=_-- is enclosed. Pleqse send copies of the "The New RTT\ Hondbook."

Address

t City-Zone-Stote- i York ResidentsAdd 3Vo SolesTox !I U"*'"" Cily !I t------t-r-rrr-rrrrrN

Jonuory, 1964 o CQ o 93 Spoce l/rorr pugc 651 send for NEW FREE "the CRYSTALCATALOG which pointed out that useof satellitetrans- with NEW missionsfor direct receptionby the generalpub- TRANSISToR lic of sound and television broadcastsmay be osctIAToR CtRCUtTS possible in the future" and urged the Interna- tional Radio Consultative Committee (CCIR) of the ITU to expediteits studieson the technical feasibility of broadcastingfrom satellites.Ex- pertsconsider this an important step towards the future possibilityof the general public being able to receiveradio and televisionprograms in HERMETICALTYSEAI.ED their own homesdirect from satellites. PRECISIONGROUND Amoleur RqdioAllocations CUSTOM-MADE The conferenceallocated the frequencyband NON.OVENCRYSTALS 144-146mc for amateurradio space communica- tion Top, perJormance assured with quality con- activities.Amateur radio was a topic of trolled throughout manufactur". Goid-oi siiue" considerablediscussion at the conference,the plating acts as electrodes. Crystals ;";- "p;ir; resultsof which are reviewedin a specialreport mounted and sealed under vacuum or nlled "Amateur yith inert Bas. Very hish frequency .t"Uiiii". entitled Radio and the ITU Space Max. current capacity is 10 milliwatts_E for Conference"appearing on page43 of this issue overtone type. Conformity to military specifi- catlons guranteed. of CQ. IOOOKC to 16OOKC (Fund. Freq.) 73,George, W3ASK 160r!!cro 2oooKc

Rr,suLrs 1963FnrNcs CoNresr ALL TEXAS CRYSTALS are made to exacting specifications, quality checked, and uncondi- Nortlt Attrencq WSMSR ..... 36 tionally cuaranteed ! c.fi'. WTQB 27 KISDX ...1995 VE2AFC....264 wlwY .1938 VO1AW... 452 NEW TWX SERVICE wtYls ..1350 XEIPJ ... . . 24 FortMyers - 813-334-2830 WA2RUB 264 - W4HOS.....147 Phone los Angeles 213-737-1315 WTBTH 48 VE2AFC 630 ORDERFROM CTOSER PTANT

Activity in the 1963 PACC contcst was very low and there s,ere only two cntries from over here, W4HOS and $t=ros cRYsrALs$. VE2IL, both ou c.s'. and both with identical 12! DEPT' cQ-l score of lOO0 Crystal Drivc Division of FORT MYERS. FLORDA Ed. Note Phone tl3 \rrE 6-2109 TWX tt3-33/i-2S30 Sa)', how about those conditions during our AND Phone contest; the boys will be talking about 4ll7 W, Jeffcrson Blvd. that one for a long time. Bill Leonard, LOS ANGELES, CALIF. Quote W2SKE, one of the operators at the fabulous Phone 213-731-2258 "best TWX 213-737.1315 K2GL, conditions I have experiencedin a For further information, chcck number 3?, on page 110 phone contest," and Bill has certainly been in

94 CQ r Jqnuqry, 1964 YOU ASKED FOR IT!

Here's just a sample of what you'll find in its chaPters:

l, 2 and 3 tube transmitters Transmitting tube reiuvenator ' Comprehensivecoil winding data . Brute force power line filters . Transistorized CW monitor . 750 watt linear amplifiercircuit . Four good VFO circuits "gallon" . 75 Watt Novice circuit . All band preselector circuit o All-nuvistorpreamPlifier . Tvl filters of all types . Transistorizedmodulator circuits . Mobile burglar alarm circuit o ComDletesub-miniature ham rig . Building a free experimentors library . A kilowattfinal amplifiercircuit . Building walkie-talkieproiects . CPO to CW monitor conversion circuits . Band-passselectivity filter circuit o Noise limiter and squelch circuits . A vFO frequency checker circuit . Electronic keyer circuit . Zener diode generator circuit . One tube receiver circuit

Here is the book we/veqll been woiting for! Tom Kneitel,WB2AAI, hos compiled cir- q book which presentsond discussesi; detoil 150 of the mostoften needed cuits oround the shock. Novicesond old-timersolike will find mony voluoble circuitshere ideol for constructionproiects. lts elevenchoPters cover: consfruc- tion, modulotioncircuits, tronsmitters, power supPlies,jrequency control' CW' receivers/converters,receiver occessories, test geor ond indicotors,interference eliminotors,ond experimentqlcircuits'

COWAN PUBTISHTNGCORP,, BOOK DIVISION 300 West 43rd Street PRICE: New York 36, N.Y. $3.00 Sirs:My check(money order) for -$...---_-.-.is enclosed' RUSHYOUR ORDER Pleoseiend me copiesof ElectronicCircuits Hsnd' book (cot.#l2l ). TODAY AVAILABLE fiow! Cirv------_--=--Zone-Stoie-' N.* York Ciiv ResidentsAdd 47o Soles Tox

Jonuory,1964 . CQo95 "brawls." quite a few of these A few of the claimed scores shown elsewhere in this column, will give you an idea of what to expect.Al1 bands Compareour terms were active. Pleasekeep in mintl Loweuer.thcsc andsee how much are only ciaimed scores. Nice going (ieorgc. yoLthit tllat onc riglrt ou you tlle nosc. wesave ! ! ()rrr "littlc gcnt." thc I6() conlest at thc entl -fhis Just ol' the ntonth. also ntcrits your attention. one keeps growin-l each year ancl if we are lucky enough to conle up with another week-encl like $5oo last year's, Man! we've got it made. Dtllvr{See you in the pilc-ups, fellows, good luck. deliversthese items 73 for now, Frank. WlWy Bob HenrvWOARA atthese terms. USA-CA llrortr pugc 671 -l'n(.rnsrr,ty llt(X)r;u r.,14.33 | kc, SSB'crs,,sys- tcrrr"rrliginatilrg in USA. lrcarnitrgworltl. Fnro,rv2000 cnrr, 14,3I i, kc, SSB'ers,,svstem,' MolthlyPnytrr{rlts pacific. Price lyear 2years 3Years originatingin USA. heaming I)rake lli $279.95 $24.30 $t2.d0 $ 9.00 SeruRolylti00 cnrr, 14,331kc, SSB'ers,.svs- \rtional -\CX-3 _..._...... 369.00 32.t5 t7.00 | t.93 tem" world-widerorrndtahle. \ational l{('N,\ I t0.00 9.26 4.90 3-44 SuNoay1800 \ational \CXD | 19.50 t0.00 5.30 3.74 crvrr,14,331 kc, FHC/CHCI Swan S\\'-ll0 320.00 27.80 t4.70 |0.32 The SSB'ersuse s.s.b.exclusively for world- Si!an SW-11?,{C 95.00 7.95 4.40 2.95 wide communications.Primary frequency is Sifan S\\'-llDCl il5.00 9.70 5.t5 3.60 14,331 kc. Alternatefrequencies are 3,805, 3,995, 7,205,and 7,295(l.s.b.); 2t,410 and,28,440kc Terms that saveyou money availableon most equip- and 50.20( u.s.b. ) . ,,Our ment. We charge you less interest. finance For further information on this dynamic or- charge is 6o/oof the unpaid balancefor 12 monthly ganizationsee USA-CA columns of June and September, payments,72/o tor 24 monthly payments,or lg/o 1963. County Identity Ctarified for 36 monthly payments." Write or phone me Bob While we feel USA-CA Rulesregarding county Henry, WllARA, about any equipment. identity are not subject to interpretation, thel.e hasarisen a questionof whetheithe namingof You can trade in equipment and paymentswill be just the collnty on QSLs for mobile operations less. You can ship your trade-in after you receive suffices.Obviously if the mobile station is within the new equipment. a city, both city and county shouldbe namedif for no other reason than common sense.How- Write for list of A1 guaranteedreconditioned equip- ever,for mobileor portableoperations not within ment at low low prices;also availableon terms. a city proper and when suchQSLs bear the mark- ings/M or /(district), and countyis named,then county identity is complete for purposes of USA-CA. HENRY RADIO cQ-1 Regardlessof printed matter on any QSL card 211 N. Main PhoneORchard 9.3127 or postmark, the statementby the operator that Butler, Missouri the contactwas madefrom a statedcity, or city and county,or county,is the valid QTH of con- tact for USA-CA purposes.USA-CA is con- Ship me..... cernedonly with common sensevalid proof of contactwith countiesand is not concerned I enclose g with .... ; I \ril1 Da.r the balance technicalities.

('.o.D. Post Office ReversesPadlock Action ! fl I rcar LJ : Jerrrr Ll jj rcrrs Some rnonths ago we reported that the U.S. Post Olice had padlockedthe [ {ant lo hur . anrl sant to trdde doorsof the Con- tinentalQSL Club, Dayton.for allegedviolation

\\'lrat of a postallaw datingback before s Iollr rlerl! -fhe eventhe Con- stitution. crux of the sitLrationwas that the \anlc rCHC and FHC operale an Emergency Flying lVtetiical Corps ( EF-MC) to provide transport ol medicines to slrrcken areas or individuals, antl which utilizes the yL lnternational SSU'ers WOrld Wicie Communication Sys- ('i11 ..... Zrnt, .. Slrl(l tem during such enrergencics.F()r these purposes ltead- L-l Senrl r{'conrliljonerl rqiliDn)ent rDrl srle l}[llftin quartcrs for SSB'ers, FHCI and CflC, have crtntbinecl communication servicesLlnder tlle master conlr()l ()f tlle SSll'ers coltntrltic;rliort "syslem." l'or fu|the| information, check number,:19, or! ptse 110 96 r CQ o Jonuory, 1964 Tria-it lhp- NUI/ISTAPLUG

.4 I il 'VOW YOU HEAR IT! NOW YAU DON'T! on a money-bock guqrontee Ilre NUVISTAPI UG is s highly efrective nuvistor ompli- Ihe NUVI5IAPtUG is sold in the evenl lhot ii doesn'l imptove yout Pdtriculdt lier designed os oD exd

/vfw/ ; :: ' ---;-r''

nNtY Ir, .;;iis .1' att r! J

WRITEFORFREEPL.TTDESCRIBINGTHEWORLD'SMOSTPOPULARANTENNAS

DearOM: Enclosedplease find $- -for-Year(s) Subscriptionto CQ,The RadioAmateur's Journal. n NEW:Start with-tssue. n RENEWAL

Name.... Call

Address

City State c0 3 Yeors.$13 300West 43rd St. Rotes:I ;;,, ;; r ,r.,,,"r'n [ NewYork 36, N. Y. Pan'AmericanandF0reign Add $1.00 Per Year Postage.

Jonuory,1964 r CQ o 97 ooooolfif,RY P.O. claimed, at that time, that cards EtECTf,Q[rllQ$ooooo "letters" eSL were a in fact and more than one could not Ameco 1.8 to 54 Mcs Nuvistor preamp (wired) Sfa.rr. 3 be ? ?eus ! Kw crs cenerator. rrs vadioo cFd'Sili.ij. o placedin an envelopefor a singlepostage fee. ! 1!r Kw Zeus. $l90.EE;3 Kw z;u;'iriii..-iio,eij r Llnder this P.O. ? cPS) $431.25 o decision then, ARRL's eSL : q00.Pl\' 750 lla. Silicon Epoxy Recririer.36<.i Surse a Bureausalso were in violationof interpretation . L_imit Capacitor for Siticon Circuits . t .OOt Mt,j.'l0;'- of the postal regulations.The League H-ammarlund 320/-120Mfd Dual Xmtg KW capacitor. O Ceneral : $4.2s. . Counselsubmitted sample evidence of eSL cards ! Cqr.qn_igAnrenna lnsularor Sale.. 41A,, x ,1,, tlltt 7y2. a to the Post .- x v2,' lS(i 6ra,' x t1,' 20r. a Office Department with claim that . Johnson Minjature ButrerflyCapacitor:4.3 to 26 Mmfd. a the informationlogged on QSL_cards was in fact ' per sectton(wirh ,{,, shafr) 95(,. a ! Jo-hnson_ only confirmation of over-the-aircontacts al- Singte_Secrion Miniature Variable Capacitor:- '-'---- o 3.5 to 27 Mmfd. Wirh a readymade t: l+,'shaft 75., and recordedunder FCC regulations; C^apacirorSale:.ul Mfd S fV . qi! Si.O-oi'ruMfd/1500 VDC thereforewere not original lettersrequiring ac- :- 9.F. $2's0;2 Mfd 7500wvDa c-E-oii"iri.5oio farr ot brackers for : Mfd 7500 VDC $1.00!-c.i."oii C.D. .i e tion on the part of the receiverbeyond that al- yDc . : lvrf!_@ .qqq l0c; 8 \4id rsob vlic readycontained in tbe radio log. : $1.95i_4Mfd 2KV Oit $2.95:tr)00 Mfd rso vnCJz.cir-irrx . I l50o-Mfd,270 VDC Surge$2.95; .1R00 Mro VbC . The General Counsel of the Post Office I $?.19;t7o0 Mfd trr0vDC $2.2si2000'Mialji viji ? Department r:sOMrd I75 \'DC $r.00j ioLio viJ si noi in a letter to the League dated i 31.3i: ! September30, I963, in analyzingthe situation ; FoLLowtNc ITEMS tN F-AC.TORYSEALED eur-ll stated; a tonswitt be shippedprepaid comininiir Lsn.'iiii,"#"" "" "" I "We i -o14et^qr.c_errifi6d chdck'a.ao;p';;;;;';;d;;" :t do not belicvethe QSL cardsare sent gp;t^aoa.c_^R9cvr - $44i'.001-_trQ:n0At' Recvr r11! for purposesof verificationwithin the mean- o $!S.e.lO1-Hq-l70ACRecvr $J_79-.0-0:HX_50 sSn-Xmi. with ZBZ i ing of section9 of the pamphlet. I facrory-insralled9483.90; NarionaaNa:,ib-d ; Restrictions SSB Recvr-$E?s-.90;- Ncx_3 ort Trartsltortationol I-etters.As used a? +:.l"J1l,.ox:rsge.rn-band JsH I fanscei!er \qlionat pwr : in sec- -ll6i.O-OiNXC_A AC 1 tion 9. verification purpose . supplv{911!!{.r $t!0.00;Ncx-Di2 V.-o.c.p*, ' Srp---' l is for the of as- o ply for NCX-39119.95. : suringthe accuracyof the information.Here. - L4ncesi'-orirrnsiireoruBF srocK rN THE U-SAI : the basicpurpose o Over 4.000 types of- UNUSED. FinSr_OUnL: i, of the QSL card appearsto . Iry, oNLy NAME.BRANDS (c.E.; ncn,'feitiiri. L serveas written proof house, an air contactwas, in o _Eimac, etc.) Write or catt for immictiit. qiiiiii- ] fact. a tions. Get all )'our rube needs at Barr.y . :iei. iil j made. Accordingly,the cards are not a some examples: consideredletters within the meaningof the .1t65-4_(a g!0r00t 4827 rrr gB.7S:8trA r;r $J.95r 316 3 .a'_$2.50; Private E,xpress protidcd . 8664 .q $1,65; t616 4r $1.00;6146.4 $J.tSa a Statutes. tltey con- . 4_:10-0_04-$?!.00; rnzr (i $2.s0r trz,q ;r, Sj.qi:-si-0ii i laitt no titottcr c-ttrerrcorr.slo o (r'-si.00; rir tltc inlornmtiott 872A $4.95i 6360 ra $3.901 ACX:riO.l 7a i cxcltattgcd (ontu(t. . l1?-09j .4CX1000A .o $t20.00; 5842/4t7A rri $5.90:-- -' o irt tltc air We do not be- . 5847/404A ra $3.90;5894 a $1d.90. . lieve the groupingof the QSL cardsin one a . . . Full Iine of brand new TV, Redio, Hi_Fi tvDes. . . o . ftr^ef,ample:.!B3 (tr $r,00; 3CB6 4t 75t anCiTi-lSet i envelopeviolates section 25 of the pamphlet a 5BQ7 .Ar $r.40i 5U4cB 4t TSct 6At)6 ro ntt Cnin o becausethe cards are not letters.Lours J. t q .9!!r 6BAG ci 70d; 6SN7 4i 90.i r2{u7 d tSi.: o .^ Doyre, Ceneral r?4T7 @ ,$!.0s; r2{x7 @ e0d; 12D(i6 e Sr.aS; sbti e Counsel." a_ t!,75/35651 t1 $l.lg1 5881 .,r $1.E0,elac, a we suggestyou re-readthe italicized sentence . l\Iaster iuobile Adjustabte Loading Coil, 16,, overall a a size. (reg. $14.95)Sale-$6.95. . above anci realize extraneous comments on a a ARD-Z \'HF/UHF Receiver-Freq.Merer. g0 ro'" 3000"""" a QSL card changes its category to that of a o Mcs. Compleie. Unused wirtr Uoo'tr.-SeO.Ob."- o "letter." I 2Amp. Silicon Rectifier: 2 Amps/'700 plV. Mounrs with-- o a 10-32" screw. 60.. a a Fifth New Mexico QSO Party G-V Thermal Retay: t20 V.60 Seconddetay. Normallv o ! open S.P.S.T. contacrs.$t.50- The CHC Chapter S1, New Mexico, an- ! !!0 or 220 l'AC Fitamenr Xfmr: Sec: (t) 6.3 VCT ao a nouncesits -5thNew Mexico QSO Party with : I1.5 Amps.. Sec. (2) 2.5 V.C.T. 6 iO a-or.-SS.qS-. o . Price I0 KW llycalex Antenna o emphasison working New Mexico'srare counties - nefavj ijf.O.i.'OOO Ohms lmpedance. Operates from 23U VAC Gvt. cosr o in support of the USA-CA, the New Mexico ' approx. O $330,00. Sale: 925.00. (Brand new in oric.' Y carton with book-) a Counties Award and the Amigos De Albuquer- Lleonard power Resislor 3r).000 9565 zr ?5 que Award. SeeContest Calendar this month and I Wnt ! Assembrv(rorrinston) with squirrer completerules in the Decemberissue, page 58. t i ljf JA:r?:iier : What's Cooking Department t : R.F. Choke: t }liltihenry r4 600 Ma. (three for $t.OOr.-D;;k; ? . Gosh . . . we've run out of space. t I Drake 28 Recetver: SSB CW/AM $27t.9ji t 2B-Q Speaker/Q Mulriptier $39.95. I : Old Man, K6BX ? QOME IN AND BROWSE. MoN. TO FRI. 9 to 6 . o Saturdays 10 to 2 PM (Free Parking Sat.). Mon. to o a Fri. parking lor 501 Broedway. a Novice llront page 69) O1 column alwayswith greatinterest. Please excuse I BARRY ELECTRONICS DEPT. CQ-I- I me for the mistakesin this letter.I do not have r 5t2 BROADWAY, NEW YORK 12,N. Y. i the best knowledge : TVALKERIVA&AD( 5-7000J-/UuU (AREA(AK[A CODELUDI. 2r2)zIzI |I of the English language. E Errrlo.e l ic rrolts] orLlcr ,,r ,.hcck auLl ml orLler. prices I Cood Luck. 73, and lots of DX." Kellner Janos. l-OR.\\(- Shipr,jpnrorer l0 lbs. $jI bo shibne,t;.;ilecii;i I "Jancsi" shipping aharges. Less tban !0 Ibs. inclucle suifir:ieni-p,iiiaee. I HA5-05-5,2l Eszter u. BudapestII, lny orercharge Nill be refunded. Fragile tuhes -rhippedvia RaiI_ t sal Itxnress, Hungary. "Green ! Send copy of ne$ 196.1 Sheet aatalog You will notethat this youngman, very much ! send inforrtaiiolr ...... interestedin radio. still values his I I hare alailable for trade-in the follosing...... education above his hobby. Thank you, Kellner, for the \anre...,., ....Title letter and I'm sure that there is a trend develop- Company...... ing toward the issuanceof certificatesto those A ldress..... who spendmuch time 4fty...... State and money collecting the necessaryQSLs to get those awards.I hope you For further infor.mation, check number 40, on page 110 98 o CQ o Jqnuqry, 1954 Areo Code 215 CApitol 4'1740 Areo Code 215 TUrner7-7350 Top Trqdeson NATIONAI From W3BAH BuvAr Hrv sueneen's

,,HAM" BUERGER Sln,bon;. Squip*nnt b;rt,;luto, RICESMItt ROAD AT GTENSIDEAVENUE . WYNCOTE,PA'' u.s.A.

{r {n rt) "!-

WE GIVE TECHNICALDATA

r\etl (lrl(l(r o\irrrlf'l licy_ Llc|trirrl l)rrft)flllilll( c c\ttttls t[e n!)sl ti\e oDfrrlirtr, (l(Jsn (riti(al re(llliretll(Dl-SSIJ gtDerdti{tr $llll c0ll(lil i0rls, Anerica's l)e uie(l on It'l"t'Y Nillr -\l"SIi aurli{) ){dtioDal ;.2 }t(. lrigll frequeDCJ l.i K( Itry tr lligb fillal nlry bt lllost : crJslrl latti( e ,jlter, togetlrtr !rillr Ii('.\ injr(tio!, nll(l Do$er easill artrlrLl ls a rtsult of incolDorrlioll of ?3ii0 shect lrfal)l l)alail(ed lllr)tlulrtot Dro- Valuable control relal terDinlls. f,lal(hilr* ri(lo 40 l)B s!Dfressioll of un$drte(l si(le e\ternal -\L I-{ -\C suDDl}/speaker consolc an(l Stamps.: l:{n(l aDd 50 Lll) ldiDioluul supp!ession of catrier. re- )'.'1'i\ ? li,il':1.:i^':''":,''t.l tr nnn 1 nlicro!olt for 10 tlb S/\ illil)iDluln :"]"'li_":':"'..:,:';v (ltr|-- GFREEN usos trallsnit- '" "" ""' ceirer seDsiti\ilJ. Recci\er rrlrr, STAMPS ting filter for sulfrb skirt selccti\itJ an([ iiif]i power t0.00 adj;cent channel !eiection. Parallel 6GJi I l0 volt suPPlY $l supplY.. $rr9.00 penlodes in tiual ailll)litier dssure colr'(0rra' D,C, Dower

For furlher information, check

Excr.usrvE66 FooT MOR-GAIN zs AND40 METERDlPotE _ NO TRAPS_ NO COITS_ NO STUBS NO CAPACIIORS ry" Fvllr Ait tetted -' Hun'J'q'Jt Ak4'dY ln tJ3' rHR€E EANO SECIION TUI.tYCUARANTEED for full legolJ or S8-Coqxiol 10o/oCopper Clod wire-Under 2 lbs. Air Weight-Roted Power-AM/CW tesislonl hordwore-'Drop' ;; ;.;;:; 5b-25 ot- t""J-VSWn under ll5 fo I ot mort heights-Rusf 75140 Amoteur Net $28'00' Terrific pr""i i"rrf"r"ii. Completely ossembled,reody to puf up. Model performonce-Nocoils or frofr- lo-Ut"ol JoJrn or'chonge under weother condifions-FullyGuoronfeed' Ner 335'0O' Verticols orher MoR"GAIN Antennos-Model 1o/2o-31 leet-Net $22.0o. Model 75/10/15 5 to 34 leer-Nel $9.0Oio t22.OO.10 / 20 Rofoble Dipole359 50-Plus mony more' oRoERor*€crLi,&al1,!.i ,u,,MoR-GAIN 1,3;.h1,.5fn,",. - o*,Jl'i.,lh:l,':ti.*:ri For further information, check number 42' on page 110 JonuorY, 1964 o CQ o 99 n'ill get lots of letter-sfrorrr the readers of CO and uirh rou lrrck getting yoLrr 'l in licensenexl ]'eal'. he best of DX from we amateurs on the other side of rhe big pond. ELECTRONICHelp Wanfed If 1'ou are able to aid any of the following. you uill help spre:rdrhe spirirof iriendshipfor. anrateur radio. Those asking help this month are. TECHNICIANSPaul L. Wilkins. 33 Woodbury Forest Drive. Hampton. Virginia, Phone: 826-1097. paul would like to talk to a local ham who can helo QUATIFICATIONS: him get startedgfl on the risht foot. Tim Weber, 1620 Lakeside Drive. Topeka. Kansas. needs help uith code and theorv ancl 4 years' experiencein electronicsfield consist- some help in reading rchemarics.He is bulldins ing of maintenance,training or instructing;2 a Heathkir \lohawk. He saws our colunrn sivei him the necessary years of which must have been teaching in the boost to keep on keepingon. Tim, the August issue of and about four electronicsfield and a graduateof an advanced eSZ others following have splendid articles on read_ military or equivalentcivilian electronics school. ing schenratics.I'm sure you could start a mem_ bership with the August 1963 copy if you re- quested. Apply by resume to: p. J. C. RosenberC, O. Box 2130, Orcutt. Cali_ fornia would like to know of any one that can H.L.YOH CO. furnish a diagram for a Breting l4 communica- tions receiver. He is willing to pay any reason- Div. of Day & Zimmermann, Inc. able fee for a book or print. : I23 S. 2ND STREET PHILA. 6. PA, I would like to take this opportunity to wish all a happy and prosperous New year. An Equal OpportunityEmployer I hone you can wolk your share of DX and hope that next year you can get your General license.The electric power was finally connected to my shack about twenty minutes ago and so now I will be PRICES able to put my rigs on the air and work manv more of you. See you on the air! REDUGED 73, Wlrr, W8ZCV CENTRAI. EI.ECTRONTCS MM2 R. F. ANAI.YZER $gg* DX [frotn puge 5Bl VP9FK Box 509, Ilarnitton, $. r8. OAOnlebv, Kenva' 0riglinolly$149.50 V8onii" f;'" ri,L'JaMombasa, VS9HRK.. ...viaW4ECI. {}NLY1O% D()WN VQ4IN/VS9H ..via W4ECI. W4VGL/KG6 . . U.S. Marine Starion, Marcus Is. Box D. Only $7.42 APO 925 San Francisco, Calif. pfte, Y_4,{Oy_R/KJ6 .4990 Columbia airingion,- Va. IIV8AU . . Box 46. Vientiene, Laos. LIMITED QUANT'TY. ORDER NOW YI2WS via SM5CCE. YSITA ... . Roberto-Trigneros, MM2 Box 5ll, San Salva- ADAPTERS I We bought lhe entire {octory srockond dor, EI Salvador. Terry "Cleqr 'em RM S0 | soys, out ot $99.50!,, YVI_B!! . .. Box 2285, Caracrs, Venezucta. kc c\-ZD6HK . . . r ia WlEl W or Brrx 2187. Lrr:aka. $r2.sol flX:fy"':'. :":?,XTT;'j:: iJ Northcrn RM^.ror 80-50 tri.iij;.i Rhodcsia. | of incoming signols. No runi,is-. 7,D6O1,. ....,.via C3.IUL. plug it jn ond it's reqdy ro r.se. for 80 kc l2.5ol Com. _Zl7_\ ..... Box 99. Mbabanc,Swazilanrl. RT;1s,s 4::;^l iAlIIt . ....Box :.r25.Tripoti. Libya. B:..iiKI J".?i';i.inq!;i,:":'.d.",f"8i 5H3JR .... .via \ 2SNM. 500 ke lFf.or 12.501 do*nt 5X5JG J. Mrrland. c/o Signats Brunch. pOB trr---rr-E J55. Krmnala, Uganda. ! Amqteur ElectronicSupplv sendcheck in ! ex-6oI ND Norman Dtrxbury. 449 Spring Green sasz u.bon ave., Depi.'C' tull-we'll prepay! _ Rd.. Warwick, R. l. i i 7X2VX . .. . via W4UWC. I Milwoukee8, Wisconsin 9AIAIJ ...... via IIAIJ. i EnclosedS ...... Shipm6...... 9AICWN ...... via IICWN. I will poy bqlqncein I I yeor C.O.D. 9AINU ...... via IINU. i tr 9A1TAL...... via ITITAI. 9Q5AB ...... via W2HAO.-Leopoldville, 9QSCP ...... Por 126d. Republic of City Coneo. I .. Zone .....Stote ...... I 9Q5GE ...... via W8WBT. Send lotest | [ ReconditionedEquipment Bulletin I 9U5IB ...... Box 1710 i-irr.nbura. Burundi. r----__--- __-_l Happy New year, Urb. W2DEC For further information, check number 44, on page 110 l0O o CQ o Jonuqry, 1964 ..BEAMED.POWER''AilTEilNAS ANdAilTEl{T{A SYSTEMS

You too - can enjoy World renowned TELREX oerformance and valueI Send for PL77 condensed data and pricing cata- los, dcsclibing the World's most Popular an- teinas from $6.95 to $999.00. Expanded data sheets - your favorite band, also available'

'r- witha MATERIATDIFFERENCE !'' ASBURY PARK25, NEW JERSEY,U.S.A, For further information, check nunlber -1a),on page ll0 YOUR CALL LETTERS

CASH MONEY IS WAITING FOR YOUR Eilgra\e(l in bltck laminated GOVERNMENTSURPLUS GEAR flasLic !rith i!hite letters. -\t0unte!l 0r 6%'/ solid itdl- We buy equipment and tubes . f or quick action call nop. .collect...(lI 9-o3oo.. ashlor Rav K2BBL. ilul brse. $2.00 postoaiLl. SPACE ELECTRONICS CO. CentralProducts Co. 4178 PARK AVENUI', RRONX 57, \E\\' YORK Box 1002Dept. A l(irksville. Missouri

THE CHOICEOF VALUE.CONSCIOUSAMATEIJRS THE WORI.DOYER OEI.UXE8.TUBE C()MMUI{ICAII(INS RECEIVER PR(lFESSI(}NAT.QUATITY14.TUBEC(lMMUNICAI fu RECEIVERM()DET HE.8O MODETHE.3O *q*Sk#S*#* 79es 129so s-L:J $7 MoNTHLY $5 MONIHTY on EasyPay Plan 0n EasyPay Plan imoorted Imporle0 r Dual Conversion0n 6 Meters . s'Bands-:-55qKC'54MC r runis-5s0xcs to 30 Mcs in-Four.8ands'- gflllJl Recepti0n ptrone0peration. ... calibrated i FiJiuctiiii',.i"nerector Detector Circuitcircuit tor lmDrovedlmprovedSSB d'.riiiiiitiiii,ii--crowueo ai seDtratespniiite BFo and o-Multipliero'Multipliercircuits (ca(can be used iriiiiiiii sadospriadr Suoerheterodvnecircuit ' -stable SuPer' Reception' Built'in Jimritlini-ousDt-. crystal c;tibrator . Efticient.super' o's;iii;i;;and Bio t'oictear cw andssB triii,iiiiiii-biicuit .' EffectiveAutomatic l{oise timiter Edgevvlses.Meter . VoltageRegulated Power SUPPIY ii.1 t j.o.?;' | sensitivity,Q'Multiplier selectivity + --oJUU withwr(rr Featuresoutstanding Siieitivitiselecllvllyt:*iliJill isls =u,of f0.8 i,'?I:l Kcs^u) ii'atdt 65db lfllfl 11 #,lli!,ll'Jfl ; and electricalbandspread, makes a handsomeadditl0n r0 Available'niemounted.in a semi'kitversion with all majorcomp0nents iour tramshack. Calitjration crystal is soldoptionally. - 64'95Completecomplete p'iemounteo.Model KT.3?0 only III-II'I-I.I MAItORDER LATAYETTERADIO EI.ECTRONICS I TAFAYETTE Dent.CA-4 P.0. B()X 10 & t, I, SALESCEI{TER Sendfor I I 111Jerlcho TurnPike' sY()ssETt, 1.,t{.Y. 11791 Syosset,[.1,, N. Y. Bigl{ew I E Pleasesend me new 1964 Catalog 640 I - oTHERI0CAT|0NS - 422page I E ShipStock No, ...... ,,. $ .. .. enclosed.I Jamaica.l{. Y. Newart,N. J. 1964Catalog I Scarsdale,N. Y. Plainfield,il. J. I llew York,l{. Y. Paramus.N. ,. I I Bronx,ll, Y, Boston,Mass. 20NE,,...... ST4TE ...... Natlck.Mass. ctw ...... ,,...... I r-II--r-Lr-- I.

'16, For further information, check number on l)age Ill) JonuorY, 1964 o CQ o l0I Hqm Cfinic ffront page 721 stalled a coax connector for the 6 meter band antenna input. He tapped the coil I turn from the bottom for a better match for a beam an- tenna. This modification allows the 50 mc an- tenna to remain connected,and still provides UNCONDITIONALTY a 2 mererconverter connection, Tbe oiiginal 6 GUARANTEED meter coil connection to the antenna terminal FASTSERVICE strip is, of course,removed. Thank you, KBZHZ. AEerican sDecializejin two-wal co&6un!- Gmns. a requency correlation dats for Incidentally, to further improve the He-170, G_.E., Molorola, R.c.a,, Collins, Lear replace the tube rectifier l-arco, Hallicrafle!, Link, Gonset, Aerotr.,1 with silicons.This cuts rrearn, benorx, Jomson, Clobe, L.S. Gor'r down the internal heat. and many other conpalnes. Send postage

Com- Con. Thirry nercial nercial Amateur We Frequency Rang€ Oven Room ot"/o have been receiving a number of letters 3 to Lg mc. ". -3ro 0020h 20mmf which go somewhat like this: . so because ,.-1.9ru;- $4.25 - $3.65 $rJ5 you 15 to 29.9 mc. T.M. - are in Europe, we would certainly appre- --;0J.OJ -7-oo-3-65- ---335-2.85 30 to 50 mc. ciate your telling us all about living --Ed- - conditions, l0 to 17 mc Fund - jobs. -- -?-oo--4.00 - J. JJ travel.worthwhile things to buy, etc.,over -5010 * 4-50 ---5^oi- there." sr^r-fiL - - -- c.tu -- ---no-4nb- Although we 6dlo so ;q 6-ob- 5J0 are happy to help fellow hams with i.0 ru, lo 2.99 mc. 8.50 - D.JU specific questions we cannot (nor do we have the time) CB dealerships to write long essayson Europe. inquircs $elcoDe Again, 1$o huudred trarsnlitters and recerrers on record do not forget the two IRC's or 25c in coin Do It, Yjurself Kits-three ? Dc Xrals, T$o lrolders g l.gs for a direct answer from us. We cannot wnre tor quantity discounts0r ph0neVictor 2.S5Zl bear the postagebill alone. Our bestto you this month. 73. Cnucx

RTIY lfrom page 74] instructionbook on the 15.VE,3CM of Toronto, Ont.. on 80 reportslow activity in Canadadue For further information, check number 4?, on page 110 to lack of availabilityof machines.VE6HM of "new" Edmonton.Al.. found that his Model 15 $5.OO FREIGHT ALLOWANCE wasnot asquiet as his old Model26. E Commenls BUY FROM Here on the eastcoast, two very strongforeign WRL commercial or governmentRTTY stationshave appearedat 3608 and 3650 kc. First noticedin WRL SPIRETOWERS November, these stationsare using 850 cycle shift and continuoustape transmission;how- ever, their transmissionspeed is apparently greaterthan our FCC-decreed60 w.p.m.,so most of us cannot copy them. Our c.w. friends un- WRITE doubtedly are cussin' us out for this. It is sug- FOR gestedthat we passalong the word that theseare ANTENN /lol amateur RTTY stations;and. that amateur RTTYers also must sign in Internal Morse code as well as in the teleprinter code. 73, Byron, W2JTP

YL lfrorn pase 761 Maxine, at her cottageon lovely Catalina lsland, We were entertain'edby. or able to visit with, All shipmentsore many of the YLs pictured here, including vio lruck, collect, W6UHA, W6QCX, W6CEE, K6BUS and with $5.00 frt. K6OQD. Also K6VAP; K6VFE, Sister Char- ollowonce. lotte, at Ventura (a delight after yearsof friend- ship going back to the good old l0-meter days Tower In thr USA'I when she was WTMUT in Idaho); WB6DeZ and K6KCI, Irma, and her family at "sunny Santa Barbara," and en route home, K6RQE at Barstow. Just love thoseW6 gals! 33,W5RA For further information, check number 48, on page 110 lO2 o CQ o Jonuory, 1964 new issueiust out! the radio h,d amateur LE EssentialQTH information forall radioamateurs and SWL's. Each quarterlyissue of theCALLB00K is completely revised t0 bring youthe most up-to-date information onQTH's. PLUS THESEEXTRA FEATURES! "0" r GreatCircle Bearings o lnternational Signals o GreatCircle Charts o Worldlime Chart o PrefixesbyCountries o lnternationalPostal Information o Andmany other features

ofUnited States Listings (Over250,000 K& Wcalls) Eachquarterly issue...... $5'00 O[fBOOf ofFoteign Listings tover 100.000calls outside the U.S.A.) Writefor free,illustrated brochure! Eachquarterly issue...... $3.00 RADIO AMATEURCALLBOOK Dept.C,0, 4844 W. Fullertonfullerton Ave., Chicagounlcago-J9'_lll. 39, lll. Seeyour favorite dealer today for yourlatest issue oi orderdirect from the publisher (add 25c for mailing)

STATEMENTOF OWNEBSHIP,MANAGEMENT 4Nq.CIR: CULATION (Act of Octobor23, 1962: S. 4369, Title 39.-united Stat@s C0de) (l) Date 0f ffling-october l. l363r (21.T-]!lc-cr FUEI.ICATIbii: CQ THE RADIO AMATEUR'S JOURNAL. (3) Freouencvof issuFM0nthly. (4) Locati0n 0f l(nownomce 0I 0ublication:-300 West 43rd Street, Now York CiU, c0untv 0! Neu Y0rk. Nev York 10036.(5) Location 0f the hoadquarlers0l oinerat-btisines ofices ot the publishers:-300 w€st 43rd Street' -New (6) strip Names mailins York 10036. Y0UR York Citv. Countv of New Y0rk, New and AddrAsea of Publisher. Edito. and Business Manager:- Firttiinr:Sinrira R. cowan, 6 Embassv court' Great- Neck. Now York: Editor-Arnold Trossman, 1908 Bclm0nt- Avenue. Bronx. New York: Business Manager-Richard A. Cowan-,6 Embassv Court. Great Neck, New York. (7) Owner (if owrcd Dy a corpoiation, its name and addross must be slalcd and.also imnediately thereunder the nam€s and addrsses 0l sr0cKn0lo€rs poicent amount 0^f stock' isIMP0RTANT i,iliiins ;i--hoitint I or more of total It not owned by a partnership or othor unlnctrDorareo. nrm.. lrs namo and addrss. as well as that of €cn Indlvloual musr D0 qivsn)-Sanford R. Cowan. 6 Embassy Cl.' Gr€at-Neck' L.1." N.Y. (8) Known bondh0lders. morloagees and oln-er securlry X-62J2243RI MAR 63 holdtrs owninq or holdins I percent or more ot total amount 0l lonG, nortga-0os. or 0the; securiti6 (if there.are none, so stato) -NONE. (9) Paraqraphs 7 and 8 include. In cas-es.wnele rne stockholder or s€curity holder appears on the b00ks 0l rne company RONAIJDBUCHTER-WA?ZTM ai iiujtee oi in anv othr fduciary rolation' the nane of tho pcr' son or corpsation tor whom such trustee is acting' also the slale_ 75'40 BELI, BLVD ments in lhe two paraoraphs show the afianl's full knowledge ind''6eiiet as to tlie cilcdnstances and condiiions under ryhich BAYSIDE64 LI NY iiict

Jonuory, 1964 r CQ o 103 Refleclomete6 [frotn page 79]

calibrated to a specific power level using a known sorlrce or calihrated meter. The range actjust js control is R:r anrl it a hack pancl control. ihe scconcl positir)n. REtsLFtc.t.lin, rcacls the powcr rcfleclecl Inrnr the antenna. fhe diffcrenie be- tween thc lilrwarcl ancl reverse rcaclings is llrc nowct' heing tlelivercrllo thc ltlat{.the antcnna. The ncxt two positions function exactly as the firsttwt'r except the calibration control, n*, i, "n the front pancl. It is used to acljust the forward reading in thc s.w.n. position to full scale in any situation so that the s.w.r. nlay be read di_ rcctly fronr thc ntcter in thc fourth position. Ad_ justnrent of /lr cloesnot disturb the power cali- bration of the first swilch nosition. Thc c()n\trrrclitln . prcsenti no clcclr.olricprob_ Icnr as lcacl lcngth ancl clrcssare not critical. The Icads fronr thc coupler to the inclicato. .hould be very short or shielded. preferably both. The Micro Match unit was sccuretl directly to the indicator box. It will be found that these couplers are flat at the frequencies specified. This wis verified by the tests made with commercial load resistori 'ai$tr!;l'"#Hi".l*:hii"1,ii.T;iF,';1.,*;1."d*". Built re mil, sfds. and. ^absorption type wattmeters rated up to I,000 '*:,.-"oj*tT;;,:":'il: oo1,Th.". mc. The cost of these surplus coupleri ran from $.95 to $2.95 while the .o--...iul pric., T,'011*- for DORCOELECTRONICS identical new units range from $+0.b0 to $r 15.00. 109 E. Elm St., Compron, California Phone €ode 2t3 - 635.914,6 For further UHF information, check nuurber 49, on page 110 Roundup [frotn pagc 83) .^Po*n Texas way Vic, WSHpT, reports a fine 432 mc openingduring the month of October in A1eYou looking for a which W5AJG in Dallas worked W4RFR in Nashviile, Tenn., for a real nice eOOmife qSO. ReollyGood Signal Generator Unfortunately Vic was out of town on Uu.il"r, a.tthe time.On the brighrerside W5HpT men_ at a reolly tions th.at he has finally found another Texas srarronrnterested in ATV_KsDZM, locatedin Grapevine with a vidicon camera. I guess we IOWPRICE will ? be hearing of some ATV eSOs t.o"m Texas

Il'.re^i.sa rcal \alue-a'.sl.eper',-in a We receiveda note from Dave, K7BBO, Span_ nne 5rgilat Gencral.rr,If Iou are too(_ rng..lor.u good Signal Cenerator a! a away.,Wash..to say he lost the parabolic'an_ r.r r rJ tu$ nrice $e recomrnend I he was r r.rnenc. \\e our workingon in a wind irorm. Sounds jjrl40.00-qs_*-i! in our shop l.nn?.h. :l'1u nlrd ilris sisnal Generator ranltltar.I guessyou irn s irilnosl a. pur\l sork as have to get usedto this CtEMENS jjil{0fr.00 one thtrt s( ils tnr t sort of thing if you are going to work STANDARD with home brew parabolicantennas. SIGNAIGENERATOR Anyhow the tragedy (INIY has not hampered M0DEtSG.83-$140.00 YOURSFOR Dave's spiiit and he hai al'_ ready startedrebuilding ('alibf.ted output ().6 to it. Good luck, Dave. 1 rj,oO0 microvolis, UOO trc $5oo Just a couplebits of newsleft. K2yVE, ro llo Mc in 6 bands. Pure D0I,I|N . well r|0tr sine wave AM-No Known two meter operatorhere in the New york r'il. All transistor. Trade- Just$6.75 month area, irrs accett.{l ()I tosl e(ruip- is now on 220 with an l l elementbeam rrr(rt "f imrtcLlf gerr. 24M(}NTHS a-nd_-a__"Barry'sspecia[" transmitter. Ronald, tlI \r lll tllrlrllllllr I rl r tll tr r W8KYD, Parma, Ohio is extremely interestej ! lNlreun ELEcrRoNtcs t "''" in ATV and would like iaii iviit"Lr!ri,,"-i f,L'"rirY r-".Y [.l Yt, l I to hear from other sta_ ! 'lli:l'i',l:,i, T tronsworking with the emission.Steve, K2pBO, ! ,fl;ill", ili;*il,;i",;.,p r;riir a r fi;;,Id"i\,i;J,:I is on 1220 mc wirh an AI,X-6 fr.om Rochelie f I harr tr) trnrle0lr r S(l Sjl {he fr)llr^rins I Park, New .lersey.Anyone need another 1220 I Say.if yorr I. \\'llit s J0llr (lerl? I QSO? haveany u.h.f.news or tech_ I t nicaI \-Nr)le. ''' ''' ideasto contfibrrleto the column,don't I keep thent your.self. I .\,l,ircss I to Let's hear frnnt you! ! ' ir] ... 2,,r.,. {ra.,, Anil we citl acceplntttt'tttrr, ltttltlltlrr ! rrrrrrr lrrrlrr rrtrrr-: ALI-EN,K2uyH Ifor fltrthcr infornr;tliriil, check trtrnrber l"rt),on lrtte I10 104 o Ce o Jonuory, 1964 VHF Report llrortt pugt 8ll except for the 24th. ['r'c hecn tr'1ing sonre l'1'{ mc schedules rvith K:llXC in \1 iami this week- end. but haven't hacl an1' luck. I wotrld like to make sonre improvetlents in equipment, but unfortunately it can't be clone now. My wife will hc coming tltrwn as soon as an apartnrentis available.This will linrit rly operatingtime some. Atso it will hurt my antennalocation quite a bit. I now have a 50 ft. pole right beside the ocean. My wife. by the way. is W9VFP. I'm going to tly and get her a call here, but don't know for sure if it will bc possible. "Six has provided many interesting hours for me down here. I'm very anxious to see what it has to offer next year. l'm well into my third six first opening after I got nreter logbook since the mdke. betler The THIRD HAND wqs developed to help. vou l.lme' A my ticket. back on November 25. 1962. l'll bc solder ioints with less frusirotion, less solder' less ono .oio, ,oaio mqnufocturer mqde time ond molion,sludtes looking forward to ntore of the same next season. tqmous ddooted il for lhcir production lines, wiring lhelr Still need those W7 states, Minnesota. KH6 and "",1i?Trt; KL7. I'll be trying this winter to stir up sonrc mokeshift wovs of holdins the solder' .the.solder- inq iron ond the wire or componenl; now it s o.slmple lwo_ q-hunk rorr' nrore activity down this way. I would like to see honded operqlion. Solder {eeds {rom either or tne lor tewer burneo beacons on some of the islands if possible' It beino oulomoticollv de kinked You'll hove or- oierheoted conneclions, loo. iron neol' would be interesting to find out more about l'i"r ir* J-"ta"Jl.i uitrt' ihe f,18 ond t22 for qnd pictures' propagation such as you mentioned some months t-qil ioinls. Send for full in{ormolion Order must sfole thqt vou ore o rrdio R7q5 Y ago via the north-south Path." Amdteur. Ten-dqy money'bqck guqr' f :--^ rru From Portsmouth. Va., comes word that qntee. You must be sdfisfied. . ... " ' "went lPrice does not include Soldering lron) K4NEH over our head in the CQ Summer V.H.F. Contest in August." Vernon had about 65 contacts in four states (Va., N.C., Minn. and

Tenn.), coming in with a grand total of 7289 For further information, check number 51, on page L10 points. Three new stations are now on in the area: WA4PUI. WA4GVT and WA4QBR. "Ask K4NEH continues. VPTCX where those QSL cards are? Still waiting. Also waiting for /-trf;ffi let's get a gun on VE2BEW and VElAHR. Bob, Reduces interference ano For ALL Amateur Trans. boys in South Carolina Haven't heard one Noise on All Makes Short mitters. Guaranteed tot those Wave Receivers' Makes 500 Watts Power for Pi- yet. (The only one I need to complete the South ). world Wide RecePtion Net or Link Direct Feed, Stronger. Clearer on All Li ght, N eat, Weatherproof. Now have four stations on in the area on slx Bands: KzIFSP and (lornDlete as sho$n total lengtlr 10! ft. irith 87 ft. of 72 otlm bal- meter s.s.b.: WA4GMS. WA4JOK' Hr'rrrpa' l ninl lFd resonarr(Iraps t\\'t. 3 oz. 1: x :;;r"*ii i.lrri"e, WA4FVD in Monroe CountY, iori). Vou just tune to desiredband lnr l'cilmlike results Ex- K4VHV." icllenr-'or .\l,L $url l-\lJp shurl-$arts recel\erc and atlrateur Florida. wants Llsto tell you that he's available iiiiiiinittils. I,or \ovICo .\\D .{LL CLASS AIIATEI'ItSI NO iirinl't-unt",r,'o. t'srits oIt (i.{Dcll'rs }-EEDEDI Eliorinates 5 seDa- for skeds anytime. Ron. too, worked a fair share ioto \\'irh e\cclleuL pcrlorDance guarantee(1. Use as plans iii""r"a V l0r all band poser gain. \(, ll.\\\\'lHI': HoL'SE of the September DX. Big antenna at ,rFieen.rrr'n E.\sY I\s1.\J.l,A1 Io\ I cnlnple(eInstructions. iiriririi i,i,to tuerer birr,ls.courplere...... $!1.9q WA4FVD-keep Yorrr ears Peeled. ,10'io-i;-io neter bands.51'fl. aDt. (bestfor swl's) .... . l3'95 Jim Hadlock, KTJRE' in Bellevtre'Washing- SENO ONLY 53.00 ,r.lr. (k.. trr.,'ar) r nal pu.lrntnhalance COD w. tivitl ,ru.,.".r',-. ,r' rlll\.rl,,r.clr'l lrlll !rr'e I"r puslpai.lLlelisery' ton. is all in ftvtrt ttf seeingnrote c lte l.'ro. 1e(lnli.nl information on 50 mc. Jinr has a nrodulator on his 30 watt wESTEBN BADIO . D€pt. AC-l . Kearney'Neb'aska "just " transmitter, but don't like phone-hi nnrnber'52, on page 110 Vince Varnas. K8REC. nt l)ayton. Ohitl. rllan- ages reliable skeds lirr tt'()p() wilh W0UtsM' Imperial, Missouli, Fridays at 2230 psr on 50.l2 ETECTRONICS mc s.s.b. Skeds are planned with K9EID soon. LEARN W8HHS at Traverse City, Michigan. has brrilt Prepore for the future os o lechniciqn a homebrew 22 tLrbe triple conversion receiver communicqtions, felevision, ond in' for 6 and 2 nteters only. Transnritter is a home- in Dormitory on cGlrn' brew 829B rig feecling into a Finco ,462 throtrgh dustriql eleclronics. Lr.h.f. celluline (300 ohrn) n-ratchedwith a pus. FREEplocemenl service' Comaire t-N1-6Nl nlatchbox. ! Rounding out the 50 nlc news this nlonth is INVESTIGATEIMMEDIATETY at Alexandria. Incliana.who reports DX K9PVS in 1909 Port Arthur to WA4AAJ (lndependence.Ky.). WASECQ estqblished (Cincinnati,O.). and WUCCI (Hamilton, O.). Port Arthur College Texqs Scheduleswould be appreciated herc also. 73, Bob, K2ZSQ

Jonuory,1964 r CQ r05 e aa aa a Ham Shop a a o a Ratesfor the Ham Shop are 5q per lor a a word advertisins o "The which in our 0pinion,is non.commercialin nature.A chargE a most . of 25c per word is made t0 all commercialadvertisers or a : organizalions.Since we do not bill for HamShoD advertisine. a tatked about full remittancemust accomDanvall orders. a Closingdate is the 10th of the 2nd month precedingdate HAM RECEIVER''Z of publrcation. a a Your copy should be typewritten, d0uble a a spacedon one side of the page only. a a Because the advertisers and eduipment contained in a a Ham Shophave not been investigated,the publishersof CQ a a cannotrouch tor the merchandiselisted therein.We reserve a a the .right to reject advertisingwhich we feel is not of an o a amateurradto nature. a a a a a a o a oSL's??WPE's?? CB's?? Largest variety 5srnp;9., 25c. DeLuxe O a samples359 (refunded).Sackers, W8DED, Holland, Michigan, a a 49424.(Religi0us QSL samples 25C.) a a a a oSL'sSamples 25c. Rubber Stamps; Name, Call, Address,91.55. a flarrySims, 3227 Missouri Avenue. St. Louis.Mo. 62118. a 2-B Receiver : a ffistruction Kit," 25c. a ORDERTVOW! '279o5 : Samco,Box 203-C Wynantskill, N.Y. 12198. a 0SL's. Large selection styles including photos. Fast service a Sendcheck or money : samples,drme. Ray, K7HLR,Route 3, Twin Falls, ldaho. a order.We prepay Q-Multiplier/SPeaker o QSL's-Brownie,W3CJI-3111 Lehigh, Allentown, Pa. CataloS expresscharges. 2'BQ $ss.gs : with samDles.25c. a O a 0St's f00.$4.00High gloss, three color. Free samptes, quick a service.B&R Printing, Box 8711, 0rlando, Fla. a a a q9L CARDSLargest selection-Lowest prices. Samples & catalog, 25C.Refund or 25 extracards with vourtirst order.Debbeler Printing,1309.C North 38th Street. Milwaukee. Wis. 53208. qSL's-SWU you further information, check number pagEtl0 for as youwish. Expert art workat nominalcost, enough 58, on said?R. McGee.6258.103rd St.. Jacksonville. Fta. 322L0. 1964 0sl-size calendars,100-$7.00. Samples 25d Morgan, W8NLW.443Euclid. Akron. Ohio, MAKES SENDINGA PTEASURE PICI@n QSr carOs,rnade from your photograph.250-$7.50 or 500 910.00 postpaid. TBROPLD Samplesfree. S/rite to Picture Cards, 129 Copeland,Laorosse, w;rr,Y x Wis. ASts SWLSXYL4wts tsampre assortmentapproximateD gslcc) covering designing,planning, printing, arranging,mailing, eye. catching comic, sedate, Jantabulous.DX-attracting. Protopay, snazzy,unparagoned cards. (Wow!)Rogers, K0AAB, 961 Arcade St., St. Paul 6. Minn. gsts free sampbr Fist service.eotles, TTOt TriOale,Austir\ I exas. qSl" -. Beautifulnew designs... Oime'Frlrncratt"rs- MartinsFerrv.0hio. VIBRO.KEYER qSL's-100-$2.50.Samples. Dime, AMEE's Printery-WgFXQ- I! butlding electronla Box138. 0ak Lawn.lllinois- transElttlng units, Vlbro - Keye. supplies nUSpntHtOSLs-Swt-s i-OO z.cotor erossv S:EJtpaid. 0SOfile th€ pqfoct p8tt. Wlttl cards$l per 100.Ruspfint Box 7507, Kansas City, Mo. 64416. a dtrely polished bare g-cofor !th' by 4tk" and t OSLt efossy. i-oo ga.so. Rutgers Vari-typingService. w€lght of 2ya lbs. Ecr Free Samples,Thomas St€et, RiegetRidge, Mitfbld,-N. J. same sntacts and Anely gadges, fl nish€d VibroDlex partr. CAtt CnnOS decals.goodies, illustrated literature wit[ Standard, at $l?,95: samples259. Errol EngravingAtt: K1VR0,Westfield, Mass. Delure. wlth Chmm6 Plsted Base. Dri@d at QSLSSamples, dime. Print Shop, Corwrth, lowa. s22.{5. NEWost PRINTERwith newdesigns. "z.colo(" $2.25 per 100. los for samples.C{le,59f: 321Warren, N. Orde! today at your dealers or direc!, Babylon,N. Y. 0S[S Largeselection stytes, inCfuOing photos. Fast seivic-e. THE VIBROPLEXCO., lNC. I-F"EEI SamplesDime. Ra-I_gIlR,_Igqe 3, TwinFalls, tdaho. 833 Broadway Nev y0rt 3, N. y, I Foloer I 1964ost catalogue.tler,1 oesigns. iof. L..cb..k, Bor 3r3{, N.J. For further information, check number i4, on Dage 110 Quakertown, ost CARDS$2.50 per 100in threecolors. SamDles and cataloe {ree. Garth,Box 51C,Jutland. New Jersey. 0St CARDS.As.low as $2.50 per 100.Samples free, Radio Press, Box 24C,Pittstown, New Jersey. FREEItVI,te l- c.py ot l.te" issue.ttunOreCs of bry, rell and tradinsads. HamsHobbymart. P.0. BoxS_L lg*9I!9Lt!!!j_ AUTHORITATIVE GUIDEBOOK KV4DI, A80UTTNE BOOgtX TWO-WAYflO0tLE-RA0tC Iullrc43lllglgr! 9. 0. st. John,virsin |stands. GIV'STACTS FIGURES.PAY RATE5. CIntSftAH HAM FELLOWSHtP 1unOenomirationaa, nomrofit, 'r'i$ WR ITE TODAY ! sionaryand fellowship organization) now being organized. Details free.Write Russ Sakkers, W8DED, Box 218, Holland, Michigan.

106 o CQ o Jqnuqry,1964 F'j;jT"l Good condition $uaranteed TEST EqUIPMENT sI(1. GBN., micro'roit, l:R-\I-25D, 10 KC-50 lt{' $295.00 ' sIG. GD^\., tni(ro-lolt, L-RII-16, 4-{06 NIC ' " ..250.00 -sfC. Cnr., mi(ro \oLt, 1.'IrfI-25D, 10 KC-50 IIC Nll\V . 350.00 "'..350.00 slC. CU-r., mi( ro r0lt, URII-268' 4 405 }C \EN 250.00 a IIETEIi, Ill0 ^{, coD,lition like nes . ' :llll 50.00 sQl-.{ltfi W,{\'!l grnfrdlor' Ile$lett-Packiul 65.00 iterature....iad ses t tire \'.'1.\' ll.. Ilnr.rtrttr'r'Irr,")r'l --:irrrl FurS **-f ururr* I ..oecalslnl 50.00 :i;;;d'ies.';Eriol ingraving. Att, K1VR0.westfield, Mass \'.1.\'.11., ll!$lelt lrt(k!rrl :100-.\ '.. ' lle$letl-I'iflitrril : l(Jll-t, .. .-. . 70.00 \'.'l'.\'..\1., 40.00 l)t llO\T ::1;, l/,$ Irr!(l l,itrfal ti[lc bdse tifrr' y',lll::,'.t1,'''n-';L',lt';:'^tetl:'8i,}i8ili,;'-li?tlif' 750.00 sl(1. (ili-\. Il.l'. (i0s (" l0 ls0 Il(l like rrtil M-exico. ts5.00 3a, SC0PES r.r,t.uui\, Dodel 5rl, 5 inclr ffiolwfisvvn, sox 225.00 'Iek!ronir, i1:,1--\D \\ilh delay linc "' Dixon,California. 'Iel{ror'i\, ili : ill'lr |75.00 n.u,,l s5.00 .\ $illr "eldl line I Tektruri\, il I t25.00 *l,ll'*-;lr'r-;lYil-Tli'#-Hlfl'Jo1'!i*3'''t.1,'1:L:,i'.,''iiii^?jnd DL -\lO\T ::ir':t J iir' lr mationsheet. mounting hardwar owari si'xmylar capacito^r.s.^$5.00 65.00 ea' DI ltO\T lr,u'r'l I tl i rrf lr ' Postpaid._Postpaid.Toroids: SPecifY 88 or( 44,44. lessaapacitors'^$l'00aaPacitors, $1.00 55.00 ts- Boi 88.Milwaukee 13' wls. Dt rlo\'f n,u'lel l08 B i inch Oscill0srnchloscope 70.00 ry,,.-*,lli'iirt-i;"BIiOW\I\G O\-5 50.00 :#++*#ii*#l+.*f "'1 IJt llO\T nro'lcl i0\' i i' 'h Fath. 40.00 #trmsFiiiteen cents per P.,i*l'foot I33Jack*'ti,li'''i,'33$ :'i 3,H JJ8: i*:'iru Dl -\lUvl lno'r'l Ii l 3 rrrch vose. Penna, iiiibiiiffirr-'.,ro-. t usel in etctr.lng-rvstarsl lo & RECEIVERS postase^to zone QuakerElectronics' TRANSMITTERS li.irdii$t.oo.-Add vour 375.00 Ilnllicrafter IIT 3l . $350.00 llaDinrarlun(lSP-600 .\1,1,rlA\D 225.00 otsati'ii'!'T-1 ttctrth DI-100 ss-ril ht##i;li^Tliilrli'il Ji;, ttrousanoi \.( . ll; ...... 90.00 u 0,,'."1,o', "ol "l11' rt 95.00 i lj,, fl,1 I,)l,licoSS1|-500 Linoar 17500 s I ii*ll. :l?lo I:.'f ". ;3 i:l 6": l?T f ('ltallerrser " 80 00 ll.Q.- llll ...... r25.00 HunlockCreek, Penna. Iikius 80.00 "6 Il'l 1l Lillfar -\rilD .. 265.00 s\ trll ff,l,i # n :ilh,:'J,it: write for freQ barqain bulletin ffi *T * 1,,?I:: lu ;: f:',1n Y' with COD orders' tase and book Prices are FOB HemDstead 2Sg' sE-tt Triplett wlo-del310 VoM, rrew,wilh leather Bet d' Avoid detay-enclose sufncl€nt Postao€-ercess $20. A1, K2EEK,75-15 L77 St., Flushing.New YorK - Filr*m''"1'il",J:';,.*.:l,'iii;;ilTdflqi!?:ii..:3"r".s! b.i-pl,++l pJ* Avenudsouth, New Yori. N Y. 10016Telephone ATOERADIOELECIROI'|ICS CO. lV' 9-0808 MU6-2835. St., Henrpstead,N Y ' Phonear€a 516 ffi n,ilxahi'',"ifu:'.ffl%i'l'ti$'".-llm[m 37 Greenwich TE 4-6018after 6 P.M. -r DX.1o0, $r50., sB.lo, $70. Both $200. ffi;d Pasadena,Cglitorniu..;. House,C.l.T., -- you.needn€w ra0-l-0 TUBESTop brandttlbes at terrific savings lf :',',xil:tr'.1,'lNiti,l"fo%"rlli'[fJ,,i:t"'d'{f,:'i'I"Y,'l""?il:I'l.T DK2.6OB COAXIAL eostigeita mp- ire irhotoe rapr's tor!sLJ NEW #ftH#iisu T;, il?i?l'%lTMNSFERSWITCH i?ifi.: t;*B .J ?ll s,]i'T ff I':,u ff 3 i: x'il i,' unit inrcrnallr contrectedin ll, A DPIIT ,%*f'8f,P"eltl:it"'$i(i:00 flik*rrrrrrx'::,y',h*Tf l\11,,ili;:"i;-l';:i.,11", "11,1,..'"llii"li: i.Tiiili"t.';.Tia,J'l,it'Jrir'J;.$.lr,l$('rr ail p\,ilir ,ll,l ,rl anlellna with 31!o{i,.',T'nrn,reua,okrahoma.- DKi-608-2C fl"Tif,l^tt#'i'flt . I k$ r,userratirrs ro. irr0 nrc: Yss'R y"iFDrt"t+l8llii: ru :0il rr': li,'larion e0 ,lh (,,-r ',^r, tenc e6 t o : Bo x ET' 1.li:l '\r'ar\'r Dc c^ir \ort- iiimittiit-$20.95 CzO.sS iootl'f utg!!4a_Cll.etIT tt[' "Y.'"1 f $';\New York "';L"l N { Y : lt T;;.o,'l"il:ilil'" sheet or t||lA,r1IJ riiq'w..tit,tr T6u9,,w; see your deater tor catalos lT,)"O ffi . Wi;.liii:i' ;t'1r^U5---- write: lticher) [FT[mTd[].,38'J,'.''6ffl';;3,uuu'{;1fr."1^i'l3ioS,l; Burlington,lowa. . _ page i*"m*-r:',3ll f,;;,%?Hil,i,1:%,',',1'ii:"':EFor fmther information, check number 57, on 110 ogglalgryl'tgls.lv citv,.N J. Phone:'l,11'rHE 3'0803' - m y$-fli;mqsId,-* t,.: ", lfl $l ;,ti if Ritcb'P'0 Box156' Annandalernlasua;ant;ed. E7 E*S,:;;*lrii,lllT'8t1,?;ifi ,ii:dlibii;tr&Homa triar. Eiisolti'liH,.ii*Biir'*liiju:(iili:, le''e{isi,iB; 3i:t8li3 iSirirtrlti.Sln*?oCrd r.i grg, councir BI urrs, Iowa ere1t HUNDREDS OF IOP QUAIITY ffiliffi i-ll=nos'nams.expe1imenters,manvdiff Trarrsuritters, P Electronics,Box6288 Seattle, wash' ITEMS lli,ri\r'rs. i,ili;;i; F;;;;;iatoe. lvr llicroplnnr:.'lrtrr.t,'rtrrrr. l'ttrrrr Supllics 98188. Ttst ington. . __,^:!. lnrerters, -\Iclrr:. ['lf)!lts -\nlcnnas, lirluifri)eDl, IIrlirdl,,r:. I'illtri -\ll)pliliers, ( l,lF:lgl-';J,3,t'tnl: Hea(l:ets, loll\ertrI:, lrlltr(,1 I,0\es, -\lOlOrS, ffi ( ( l)Jnsillotor:. llli,$fr., iblt lit-rcrs ixrkts' #"9lf+;:'ffi'^+^f1'E*-16*- ,- curvedrucite tjp bends It{I.r.pr. s$rl l, -. Ll s'I t t"r FBEE tioni po i i.t fr a sh rins cATALoG-DePt C Q' iiihi -en.aburlnspect-Li |lr*1,'ll. j'i!,.n,A?t,.l,t .tt ! !: i*l8li' Jf,1;lii:h:tir,l,oil gnt,Box 2r2, G Ienda Ie, 8iffi Freetist'Nat stinnette, W4AYV.Umatilla. FIa. 32784. For furtire" intormation, check nunlber

Jonuory,1964 CQ o lO7 aoorI eo wim- oro inau penJ NEW -lf,'T,;l',:','J:l,Jll,1i?iidBF*gT;,,H;;a?1;:;lil::FJIJ:o;m",,.Jqo r.oo, eox SPECIATS ac cep ted AIREXNC270 focrory seoled .qrion ...... $179.95 potvPoly6&2 6 & 2 q2z<^n

IRA.PE-|rysACCEPTED I TtMEpAyMENTs On HomGeor, CB Morine I Up ro 24 months Ele(tronj(s& Hi-Fiequip. f ,o poy USED Geloso G 212 9179.95 Globe Scout 559.95 HqtlicrqfrerSXilo 90.oo Globe Sidebcnder 69.9! HqllicrofrerSXIO0 159.95 lvlulriElmocAF67, pMR.7 GonsetGSB IOO & power .. 219.50 filter, nvr used, .00. t5th tlon Radio Heqrh DX IOO . l25.OO 225.oO W9GXR,315C R ii;;il;;.;- !,I,u',,o^-su.qnlv Rd., G. Wilmette, Nqtionol 125.00_ii:ie 8B.BB -NCl55 Hommorlund-...'-... He .00. Globe Chief ...... 45.00 tOOC . -'. f Oq.SO N.J. We cre ore of the lorgest retoilers of Hom Geqr, C.B.. Mqnne Electronic ond Hi-fi equipment. Complere linei or new equ!pment of qlmosl oll monufoclurers ore .qrried in slock. WE WII.T BUY FOR CASH Your used Hom, C.B., Mqrine Electronics, ond Hi-Fi equip, High prices poid! ffiF.9im"-,':fJ@ Moil ordersfilled prompily.20yo depositrequired. Bol_ once C.O.D. Mqny other speciolsov"ilobl,". ie-nJirs your reqstremenlsqnd gel ovr quoiolion. iH,;*T$ft!: AIREXRADI(l =--'\\-?---- C(lRP. 85 QS Corrlondr Sr., New york 7, N, y. ilJ#ilri,l*-,ffifilrf.l,ffi itrj WOrrh 4-1820 ffi11{;,ffi

For further information, cbeck number 59, on page 110 lff;4;l$i,p,'-itiiJ:*}s;il,',',.,,r"r.T.:{.i#{ts ffiffiffi:trffi QU|CK,SAFE WAY lo remove insulotion,oxides, sloins from qll metql surfqces for good eledricql contoct INDUSTRIATRUSH ERASER $1.50prepoid - money-bockguoronly FybRgfoss Refills, pkg. ol 2 - 2Se, DEATERSWANTED TheEroser Co., lnc. 1072S, Clinton St., Syrocuse 4, N. y. For further information, check number 60, on page 110

new. wtil sacri NeuDKl2East Fourth SINGLEPOLE THN,EE THROW COAXIAL SWITCH

\\'eallleri)il()fcor\itl tflal fot rcnlote s$itcltidg of r.l. sotrces. I)esigiled for rrouDting on ttast and tem0to s\ritching up to 3 anternas. Not a rotatiDg or stepDing ,.srtdi. SirDlifJ installation, sare Doney l)y running oile cablr instearl of se\errl to )our antenDa arraJ. gri.ri:i,-J.l'?tTil;;H#:,,'#J,-,f:.up arlacnest0 each end of the present See)our (lealerfor cata- ilng.beams- extending "#iiJ,t'{{i:i?}ft}'#ithe overall length log shect an(l (olilDleto i,'fill.:,,1il;;ll all Deamsted directlvor throush,,RFi:r', \\'i{lr trDe :: $22.95(. cDe(ifiaatiorls, or rrrite: \. Il\C, TN1.OR lent SWRand fisure conreclors ...... $26.95 8il-+lill-tn,.u{'{#iJE*i;f directionalpattern on 40. Cons i'.li#fii''Jii,$i:'ituft:l':$gllne''il; ff; l:[,ili,,]I.*l'zu,*t111i,ssi*In'*T1,n;'J.'*r,':pplebee Company- Iror further infornration, check number.ltb on page 110 108 r CQ o Jonuory, 1964 Zero Bios llrortt page 141

adopt a broacl policy of genuinely trying to up- grade the AnlateLrr Service. In this connection. I would like to add a fur- ther point. The directors of the ARRL are elected individLrally b-v the members in each of the League's l6 divisions. They in turn elect a ma- jority of the Executive Committee from among their own members. This is a thoror:ghly demo- cratic procedure. Grass roots control of League affairs by the membership is demonstrated b-vthe fact that half of the present Directors of the Board. as well as all of the Director-nrembers of the Exectrtive Committee, the Ceneral NIanager.the General Counsel and the Presiclcnt have been newly chosen within the last fir'e years. ln the past )ear that I have been associated with them. I have founcl the Directors to be with- out erception a sincercand conscientiollsgrotlp of men. dedicatetlto the best interestsof Ama- 10070 MODULATION-WITHOUI DISTORTION ir procticolly proud with and impossible lo olloin with most hom rigs. NOW-Thonkr to teur Radio. I anr to serve them. P&H-you con hove your coke ond eot ii lool I am in full accord with the policies thcy have Simply conned o P&H MODEI, AFC-l or AFC-2 between lhe adopted to strengthen Amateur Radjo. mike ond ihe mike inpul o{ ony SSB, 0SB, AM, PM or fM tronrmiller-Sei the tronsmiller oudio goin control for 1007o ln conclusion, it is my opinion there are two modulotion ond fORGET lTl From o WHISPER to o SHOUT- general courses of action that are open to us. rhe compressor ovlput level NEVER VARIES MORE THAN 6D8. Moy olso be used on PA 3y.tems to mointoin high The first is to drift along, do nothing, and hope oudio output withoul blosting. for the best.This is the easy way. and the chances NOT A CIIPPING DEVICE! This is on AVC type compressor, are that if we choose it we will get thoroughly like broodco:t !lotionr u5e. Operolion is inslonloneous, wilh no pumping efiecl. Euilt-in ovdio filters ond SEPARATE clobbered, one of these days, at home as well as HIGH ond LOW IMPEDANCE CIRCUIIS. abroad. HIGH IMPEDANCE threshold is set oi -52 DB ond will pro. is to face up to the vide up to 50 DB of compression with negligoble ditloriion. The second alternative LOW IMPEDANCE threrhold is ret ot -25 D8. ond will pro. facts and start to do something constrtlctiveto vide up lo a0 DB of comp.ett;on when used belween lhe preserve Amateur Radio for the future. That is speoker ond lhe oudio oulpui of o receiver; resulling in excellent AVC oclion from.e

GUARANTEEDSURPLUS 2C39A ...... $6.95 l\1;0-\ .. ... $ 9.50 3011'r,...... $24.95 casJ alr'l plpasanl to lparn or inrrease 2C31)u/ It is l-\l;1R ... $19.95 4168 ...... $ 8.95 r;ea.l tlrs'rn,',lern$aJ-silh an Instructograph XI00Ai $ 9.9J .t:,01 ^^3( t{ \,(0,,.\ . $29.95 L $t9.95 Code Teacher.Errcll. nl .fnr IhP.heginneror jn:i-'. I l'X? r' \ r,,,,,'.\ $8e.e5 \r l ...... $ 2.50 a.:rarr.e.l"tu'icnt. A rllli.k. prarliral and de' j-ilj\ H s e.ss {rr ...... sr0.e5 i'"n i.,t'1" m, rtrnL A\ri lal,le lapes frnm begin' ...... Ir6.65 r"i''r m"i"ac.s nrrall sub- li0'r'H . . (irl0.\ ...... $ 3.00 ;,,,r. ah,lrxr,ctlo rtUi..,l 4-4ri0A ...... $24.95 $16.95 je.ls. i lo l0 \\-I-f[ AlqaJc reaJy. I orl clrns'is l1i \ :11{ ilr(lles ...... $1.95pr. sptse,lralrre Sofhets-,1X1i0 beats haring someonesend to you. 4CI300A-SIi;00 ...... $7,50 S11-rli6 \raler tlpe I for 45c ;o QltfJ, Silicotr rectiliers Sarks T. (.\1;0rJ) 55c-l for $1.00 'I'raDsistorsrRenrii\ i\l:l;-\ i-\i3i;R ... 55e-l for $1.00 ENDORSEDBY THOUSANDS! $\ l"\l r4" 35c li n'r $1.00 Til1,.('onJ.:5ec.:1000 ilrf r l;u0 Iill'r.l; l" " C0de Teacher I:IerallJ .,,.1UU,,t,,l | :,,',rill r.:.1 il\ l, :"\ l Ll 35c :l L r $1.00 The Instruct0gfaph .-- ILllr.tuI.l.l rilt:,5lr,( LI_arl ol'cfnlOrlrl'lr.l' J:::tiljtOr an l -\' ; Itecei\ers r1l in e\ccllolt con(litiorl tnrl che(kcLl out. lr,a(r ell..Lle.aljles arrluildanyono l^t" lFar'llearn an(an I lll:ljlerntsler cole.,rle trlln\rlln_ \. ('oLlins ?;S1 ...... $339.35 iurther dssiEi3!r'c, Tlrcusan(Ls of sucaessll )Il \; R1{10 ...... $ 5S.95 t "acquireil Iinisht opeLarors hare the code" lrith the Instructoqraph Sys- conser [ilt]11 ...... $ 69.95 ful \Irire today for full particuiars and convenielll relltal Dlans. Itllll 611110Bltl\l) \11\\' ir.ur. splr...... $229.95 tem. Iitigllt lt5; ger). for. N (i nrctcrs . $ 49.95 R(':llS w.ac suDplT ...... $ 09.S5 '1'echtronirscope 511.\D-Il\cellcnt con!1ition ...... $2S5.00 MINIMUM OEDER $3.00 Wo need tubes Darts comp0nentstest equipnsnt new and used 47II SHERIDAN RD,, CHICAGO ,I0, ILL. Mid-WestElectronic Supply,54 Mia Ave.,0:ytsn 27,0h:o 4700 Crenshau Blvcl.. Los Angeles |i, CallI. For further infolmation, check number 14, on page 110

Jonuory,1964 CQ 109 I BACKISSUES FllRSAIE $1.00 x" 1950--Oct. 1951-All issues.except l\lay, Nov. 1952-All issues.except Jan., April. Aug. 195)-AlI issues.except May, Julv. Dec. l9t4-All issues.cxcept Feb..Irfrl 19t5-All issues.exce-pt N0\'. Aircx Radio Corp. Algcradio Eleitroirics Cornpany l9i(r Alt issues.except Aprit. Julv Allied Radio Amateur Llcctr0nic Supply 1957-Al1 issues. except Jan., Feb., trfay, and American Cr'rtal Comptny Nov. Dec. Barker E Williantson, Inc. 1958-All issues,except Jan., June, July, Sept., Barry Electronics . Oct. Burstein-Applebee Company . 1959-All issues,except Jan., tr{ay, and June Carr Plaslics ...... tlo Central Products Conrpany ...... l0l 1960-All issues,except i\{ay Clegg Laboratories ...... 22 1961-All issues Cleveland Institute of Electronics l2 Collins Radio Company . . . .Cover II \962-All issues.except Jan. Communications Equilrment Co...... 106 Conmunications Ptoducas Company Inc, . . 5 1963 AII issuesexcept Jan.. IVarch Datak Corporaliotr 84 BC-603 Conversion orticle (5ept. & Oct., 1958 CQ) Dorco Electronics...... r04 per Rcprints ovoiloble ot 50C set. Dos.Ke) Companl 88, r07, 108 l)rake. R. L. Conlpany CQ Mogqzine 1l Ldilors & l-ncineers Limitcd t1 300 West43rd St.,New York Electr0nic Circuias Handhook 95 36, N. Y. Eraser Co. Inc. The r08 E\cello Electroni(s Inc. . . . 83 }-air Radio Sales 107 DOW.KEYCONNECTORS FinneyCompany. The ...... 83 PANEL MOUNT DOUTIE MALE Hallicrafters Company "Ham"buerger Dureble, siive: F6vorite evetu- 99 Dlale4 prqi.ion where. pre..ijim Ham illart 9l made. Qtl'1 Ve" aade, :ugged Ham Shop 106 nolc ij neeCed, tGking typ? Harvey Radio ro scfews, plarqt Company Inc. .... E5 5;h,e, _ Heath Compan! 2l e. -.. .70 ea..., .9S Ilenry Radio 96 DOW-KEYCOMPANY, Thief RiverFalls, Idea...... r05 Instructograph Company 109 International CrJsaal tlanufacturing Co. 4 Johnson, E. F., Company .. .. 13 Lafayette Radio t0l Lamkin Laboratories, Inc. . .. r06 illaster Mobile Ntounls Inc. 92 Mccoy Eleclronics Co. . . . r5 Mid-West Electronic Supply 109 iltill€n, James Mfe, Co, Inc. l0 mi$'."'il*t"'ffi$3.50M.O.-postpaid U.S.A. Dlasticbase. Mor-Gain 99 CARRPf.ASIfCl . BOXl8222-1. Indionopolis,Ind.462l8 llosley Electronics, Inc. 6 il{ulticore SalesCorp. .... IE 5ERVlCEr.rrrrrrra National Radio Company. Incorporatcd . Cover Ill r!rrtrrrrrREADER NesJlronics Corporation 9 : CQ Mogozine.Dept. RS i l'& H Eleclronics .... 109 I 300 WEST43rd STREET Void ofter : Parks Eleclronics . 83 Pelersen Radio Co. Inc. .. . 1 ! N"* York36, N. Y. )on.24,'1964 I Port Arthur College 105 rA!RadioAmateurCall r Book ...... 103 Pleasesentl nrc nrore infornration tln your' : RCA Electronic Components and D€vices ....CoverlV ads in the Jan. 1964CQ keled as follows: - Raytronics ...... 9j i Rohn I Nlanufacturing ComDany 20 I 1r 2a a I E z a o o r^ I ^ RTIY Handbook . .. I 3 4 5 6 7 I 9 r0lA I 93 r ll 12 13 14 15 1617 l8 l9 20ln ! Sickles, F, W. div. t9 ,, 22 zs 24 2s 26 27 28 2e SideBind Ensineers ...... :. :. :.. l9 | 3ol,- : Sl)aceElectronics Co...... 101 I 31 32 33 34 35 36 37 38 39 4ol' ! Squire-Sanders t1 Subscription 97 i at 42 43 44 45 46 47 4g 49 50lD - rt 52 53 54 5s s6 s7 ss 5e 60lE Telepl€x . 1r0 I I Telrex Laboratories ..... 97, tol r TotolInquiries [-l ! Texas Crystals .. 91 It-lrTurner Nlicrophone Co. . . .. t4 I r NAME- VeeBeams Ltd...... 93 (Pl"* Vibroplex I _ Pr''"t) I Co. Inc. .. .. 106 r rype or work tspecrtyt--__ I Western Radio Co. r05 r ADDRESS- I Whippany Laboratories lnc, EI I rrrv I WRL. World Radio Labs. Inc. 89, 702 I Lrr I r ZONE-.-STATE- I Xcelite 15 2.. ;;,;;;. ; ; ;;;;;,...,,,. -., I Yoh, H. L.

I lO o CQ o Jcnuory, 1964 "IVowThaI You'veHad o Chanceto Trv the Lower Priced Transceivers, . , Get My Territic Trade-In Quofe on the U llimafe . . . the COLLINSKWM-21" TERRYSTERMAN W9DIA

We of AES ore loudmouths-so we nolu- rolly put in lhe BigSquowkbox. The KWM-2

is not only the best dollor investment,but ?o it mokes q dorned good orm rest when

flying the componyPlone.

WATCH FOR W9D'{ MOBTLE FROM F-IIrrrr-1 I H'S A'RPIAA'E lmP0RTANf! 5end..", ollarr iloiltair Ordcrrordc' anddnd - I Inquiries lo: lerrt, y.9?l+W9Dl, "t our llilwoukce I store, c/o Deportmett (C) I Get Our Quote Todqv'Todqy. No obligqtion AMATEUR 1 t-rr, ?"I"o.',t rQuore t EtECTROil TC _ I hqve to trqda lwhol's your deol?) . SUPPIY r.

l;'::"H" qnd will pqy bqlonce I E-9,O,D., .FlYeor.!lYeor [2Yeors E3Yecrsl I (l0o/o deposit)rcsit) lf ordering on lerms, pleose lisl following infor- I I mdtion on sepdrole shcet qnd enclosc with this I I order: Nome, qddres, oqe, morried? children?'

sive, tha I @ I I n*, I ADDRrss I- CITY - STATE- I ElCheck for lotesf reconditioned bulletin. I -TIIIIII'I ,ffi For frtrthet infornrrtion, chrtk nttnti,ct lii. {,n Pagc llli Jsnuery, 1964 r CQ o lll punchout a cfeanBIG $lG1{A[ wilhrhis knight-kit" lE0-WattAM-GW Transmitter ! OET T(|P WATTS.PER.IIl|TTAR

. 150 Watts Peak AM/GW Input on 80 Thru lO-Meter Ham Bands r Controlled-CarrierModulation for Maximum Audio o Stable VFO with ptanetary Drive, ..Spot" Switch . Clean, Chirpless Keying- No HV Across Key r Thorough TVI Shielding, Filtering, Bypassing o Adiustable Pi-Network for 40 to 6O0-Ohm Antennas

til re ;!\Sfltlu;}glil;S!#l T-150A1S0-Watt Transmitter Kit tiii ON LY u' e5 Latest version of the rig acclaimed oy H'"t;: | |I *::'::ilffi#*ti*':ii;,tffi t6m.orrh.ty for fine audio quality with negligible"a ",.'o?,?',1',ioo'F,". distortion, pteniy oi mi t

{"ri&i.truffi,ilt*ittititlteii'xiirii::i'ffii::t!&K.:titittx.i;:?t,ft - - - r r r r r r I fi-ryi';- i iff chicaso I sotisfoction 80'rrr' suorunteed! lllJ;L:lij,l"lll'.tn'oj"_,::^{ollowins : I - or your monel hdck D T-15OATransmitter Kit 83 yU 4O9cA T ! P-2SWR/Power Meter Kit 83 y 627G^ T EASY TERMS AVAILABLE: I I P-2 SWR/PowerMeter Assembted83 y 546GA ... I Take advantage of the I $... .enclosed(check)(moneyorder) D ShipNo Money Down on Allied,s Credit Fund plan t Allied Gredit Fund Plan I I I Nu.. ORDER TODAY FROM ""^"'" "' I I I lA t ALIIEIIRADIll I vrtJ-Zone-State- I crt,_z r lrl rl lr r r r r r r r r r r -TEEIEELI lfor lrrrlher irrfornration, chcck numbcr 1?, on page 110 l12oCQ. Jonuory,1964 (dis)similap They don't look alike and theY're concerned,it does).lt all boilsdown to this: practically obviouslyall intendedfor widelyvarying pur' there is a Nationaleq uipment for may vary in ooses.But in one respectthey're as identi- everyapplication. The models or cal as peasin a pod. Everypiece of National size,in weight,in appearance,in number all incorporate equipmeni,from the budget-pricedNC'77X type of features. . . but they quality, and to the mightyHRO'60, is builtto the same the same uncompromising inflexiblestandard of quality.Each National they'reall backedup bythe sameexclusive . ' . rig sharesthe same backgroundof careful OneYear Guarantee. See all of them now your and conservativedesign, meticulous wiring at your Nationaldealer's. And ' . . for and assembly,and stringent step'by'step own personalreference, send for National's packedwith inspection.Testing of each unit is con' new complete-linecatalog . . ' ications ducted as if National'sfifty'year reputation f ull descriptions,photos, and specif gear. hingedon the successor failureof just that of all National Writeto: one rig (as far as the buyer of that unit is !8Ii3X$+,iiB:o@> 37 WashingtonSt., Melrose76, Mass.

I

] ffi -. ffiG F ] l at o.o

c* o-o

console 3. NC-190General coveraqe ssa' Al & c/'/ 1, NCX-3 Tri-Band Transceiver 2. NCXA AC Supply/speaker NC-121General coverase Receiver 6. Nc.1:0 General Receiver4, NC-270Double Conrersion Ham Band'Receiver 5, Rece ver 9. VFO-62Vafiable Frequency Osc'llator Coverage Receiver7. NTS-3Speaker 8, NC.400SSB GeneraiCoverage iO-.flCfO iransistorized DC Supply 11, HRO,60Receiver 12.NC-77X Four-Band Recerver'

Erport Sales: A wholly owned subsidiary of Nalional Company' Inc' World Wide gr shepPard Ave' w" willowdale' ontarto' Ad Auriema. rnc', es aroaJ st., N.V.c';tunuda: Tri-Tel aisoi',

For lurther information, check nnmbcr E. on lage 110