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Radio-Electronics in All Its Phases Ada 30

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Radio-Electronics in All Its Phases Ada 30 Editor RA I O -1Motap, GI AMATEU RADIO CLU STATIO SEE PAGE 828 Audio Response Correction SEPT Rebuilding a Televiser 1 9 4 6 Design of Audio Mixers RADIO-ELECTRONICS IN ALL ITS PHASES ADA 30. PANORAMIC RECEPTION attends the opening of the 20 and 40 meter bands When the 20 and 40 meter bonds reopened for amateur communication with all the excite- ment and ceremony that usually accompanies a " ight," a Panadaptor sat in on the fun. Below is an account, with illustrations, of the act 'ty that took place before, during and after that long- awaited ha occasion. (As Viewed by W LNP) 12 MIDNIGHT! All aetivlt, 'Ohio the 2:00 -2:30 A.M.! Signals appeared on the 3i0STAGE. the S Broadcasting I l Bri h Corn. band comet]. The stations e le outside band. Patterns of deflections showed that pony and Spanish w station were still to Point remained on. these only carriers. and not actual seens n and heard on the a0 meter band. thmm antrat Ions. Their signals occupied the center of the On the edge of the screen. but eut. side of the band, were few w and phone stations 4 And the official message from the A.M.! 405.4:30 A.M.! Wlthi few minutes .5 A.M.! The number of stations en the of the official station of ARAL. WIAW, announcement.. ent. abc 1lteen stations as growing. And activity on the 40 'taunted to 40 were on . all amateurs that the 20 and air. arl. rns: W2LNP, irtew band appeared to be normal for the meter bands were again their property. the station to which e thi adaptor wax first time In many years. rigged, exchanged greed with W6SET About the same time. large signal sud - in Fontana. California, station whose deny sprang p . which appeared to be signal appeared on the s n. local station. This was found to come Porn NZSAA in Panama. C.L. Only with Panoramic Reception was it possible to a Panoramic picture of what was happening and where. Panoramic Reception permits you to d 'he some every day of the year! With it, you can see a continuous visible picture of band activ that enables you to spot signals . and to Identify them. It adds to the efficiency . ease c 'aeration ... fun ... of amateur radio. See it at your radio parts jobber now. Get what you're missing . with PANADAPTOR nro PANADAPTOR, Model PCA -2, is 010 tube electro, Ily tuned superheterodyne with o sell -contained scope, complete for II5V, 50 -60 cycle operation, of ILY $99.75 net. GUARANTEED FOR ONE YEAR. RADIO CORPORATION 242.250 WEST SS- 5- dien Rip : Canadian Marconi, ltd. I a_ Building this A. M. SIGNAL GENERATOR gives you valuable experience. Pro- vides amplitude -modulated signals for test and experiment purposes. RADIO SERVICING pays good money for full time work. Many others make $5, $10 a week EXTRA fixing Radios in spare time. ith 6 Big Kits of Radio Parts I Send You You build this SUPERHETERODYNE CIRCUIT Do you want a good -pay job in Radio -or your that brings in local and distant Mail Coupon for stations. You get practical ex- own money -making Radio Shop? perience putting this set through a FREE Sample Lesson and my FREE 64 -page fascinating tests. book, "Win Rich Rewards in Radio." See how You build this N.R.I. gives you practical Radio experience at MEASURING INSTRUMENT repairing Radios with 6 yourself earlyo in the course-use it for practical home -building, testing, Radio work neighborhood RadkbRadios BIG KITS OF PARTS I send! to pick up EXTRA spare time money! Many Beginners Soon Make Good EXTRA Money in Spare Time While Learning VCCESS in D The day you enroll I start sending EXTRA MONEY JOB SHEETS. You LEARN Radio prin- pS ciples from my easy -to- grasp, illustrated lessons ßE at Home -PRACTICE what you learn with parts I send -USE your knowledge to make EXTRA money in You fixing neighbors' Radios in spare time while still 1Wi111ra learning! From here it's a short step to your own full -time Radio Shop or a good Radio job! Future for Trained Men Is Bright Sample Lesson FREE in Radio, Television, Electronics Gives hints on Receiver Servicing, It's probably easier to get started in Radio now Locating Defects, Repair of Loud- than ever before because the Radio Repair busi- speakers, I.F. Transformer, Gang ness is booming. Trained Radio Technicians also Tuner, Condenser, etc., 31 illustra- find profitable opportunities in Police, Aviation, tions. Study it --keep it -use it- Marine Radio, Broadcasting, Radio Manufactur- without obligation I Mail coupon ing, Public Address work. Think of even greater NOW for your copy I opportunities as Television and Electronics become available to the public! Send for free books now! NOT/7 ÁMP EELEf ON Find Out What N.R.I. Can Do For You GFT FREE Mail Coupon for Sample Lesson and my 64 -page book. Read MR. J. E. SMITH, President, Dept. 6JX the details about my Course. Read letters from men I NATIONAL RADIO INSTITUTE, Washington 9, D. C. trained, telling what they are doing, earning. See how quickly, easily you can get started. No obligation! Just MAIL Mail me FREE, without obligation, Sample Lesson and COUPON NOW in an envelope or paste it on a penny 64 -page book, about how to win success in Radio and postal. J. E. Smith, President. Dept. 6JX, National Radio Television -- Electronics. (No Salesman will call. Please Institute, Pioneer Home Study Radio School, Washington 9, write plainly.) D. C. Age Name My Course Includes Training in Address TELEVISION--ELECTRONICS 9 ` City Zone State Frequency Modulation APPROVED FOR TRAINING UNDER G I BILL RADIO -CRAFT for SEPTEMBER, 1946 809 NEW 7 -PIECE STORE DISPLAY FOR N.U. DEALERS store-in l e promotion in a new, flexible, easy -to- fit -in form ONLYSKILLID INDS TOUCH THE RADIO Wf PEW FOR YOU 'WHOW' 0 .,l1GIAlf MK QUALITY HUGH 10t6-11ME EC010YY N ional U ion YE-.rIOMf IFS and PlIkS /S4 e e N Padé.,lj. CIS, ylmm,,/ EASY OM THE EYES ! SEITIAEES TNAT ME OH 9J YOUR ERIES ` ' Order yours today from your N. U. Distributor Be one of the first to show this brand new display idea -that sells your service skill and tells customers how and why you can insure their radio enjoyment. Full of life, action and interest -printed in 10 colors on heavy cardboard -each unit is a complete display with easel and ribbon streamer. Display them as a group or as individual NO Ow, counter or shelf cards. Order from your N.U. Distributor now for immediate shipment. NATIONAL UNION RADIO CORPORATION, NEWARK 2, NEW JERSEY NATIONAL UNION Alk w 0,4, !!! Transmitting, Cathode Ray, Receiving, Special Purpose Tubes Condensera Volume Controls Photo Electric Cells Panel Lamps Flashlight Bulbs 810 RADIO -CRAFT for SEPTEMBER, 1946 CALRAD 'hard-to yef'ßAD/0 VALUES! SPECIAL! 5 Tube Super AC -DC PARTS KIT V. M. AUOMAT C RECORD CHANGER Make any record Player wireless with brand new TWO -TUBE PHONO OSCILLATORS Operates as tar as 105 fret from a radio and can be used with Auto- matic Record Changers. Players or Microphone. Uses 1- 12S1'.7 and 1-12II6 Tubes. Complete with tubes $8.75 net.n Sup- plied et kit them with .75 e.olSup- instructions Pe assembly. Complete $495 with all parts_ Instructions and tubes net Thin Record Changer is a well -made mecha- nism, will play either 10 -in. or 12-in. records. The pickup uses a crystal cartridge. Size 14 in. 4 Prong Electronic x 14 in, Packed 2 to a factory- sealed carton, Universal Vibrator factory guaranteed. Kits include: Stamped Chassis -Dynamic Speakers - CARTON $35.00 Fits f0'. of Output Transformer -Volume Control and Switch- - Special $18.95 ea. all replace- 2 shielded I.F'. Colla -- Antenna and lbs. Colla -Two. ment,. Indi- gang Super Varlable -50 Octal Sockets -20 x 20 Mfd. v id uni ly 150 Volt Filter -5 Tubular Condensers -3 Mica Con- boxed. densers 6 Resistors-6 ft. AC Cord and Plug -Circuit 4 ifram While They $8.95 Loss or $50.00 MICROPHONE TURNER Last ea, T -17B CRYSTAL MIKE BRAND NEW With 100 ft. Shielded i Made of durable Volt Mike Cable Weston Ohmmeter P lactic. Complete $795 MODEL 663 with 6 ft. rubber with each l'onplete carot- coated cord and plug in, t dse and leads List $7150 PL-68. Preae -to- VARIABLE $3950 talk button. Can be used with most ra- CONDENSERS Limited Quantity Special 6 dio sets as home Single Gann 140 Mild Variable Con- AUTO ANTENNAS broadcaster mike densers 95c ea. c=ü tines Bra.. Toting for entertainment. än11 Triple Chromiumhro mum Plated G Insulator Type Cowl Vlounttug With Lead Individually Boxed Dual Spaced 110,110 Mfd 24 In Master Carton Lots of 48 $195 1lYlllilf,/>h Variable Con densers 95e ea. each $3000 $5500 Dual Soared 170 170 Mfd Variable Con- densers 95c ea. Immediate Delivery But Quantity Is Limited. SUPPLY IS LIMITED! ACT QUICKLY BUY NOW! LOWEST PRICES! STOCKS LIMITED! Fully Shielded Power Transformers 50 Mfd. 150 Volt -35c ea. Tinned Copper Shielding -ré in... In.. 50 Mill -6.3 Vo. Cd 2 amp. C.T. -S V. (lp 2 amo. 6 Mfd. 450 Volt30c ea. 51.50 per 100 ft. C.T.-650 Vo. C.T. $2.25 ea. Lote of 10 $2.00 ea. 20 Mfd. 450 Volt F.P. 50e ea Rubber Sheathed "Mike" Cable. sh- eided. single 90 M111-6.3 Vo.
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