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Ulu I 110 K\I Hugo Gernsback %Mt ei;sch RADIO TELEVISION NEWS Jet.E,,on. ULU I 110 K\I HUGO GERNSBACK. Editor formerly RADIO CRAFT N a t , `!, a t 1 l . st si st st si t st t t( ! i l ` t . t e AUG 1949 IMPROVE YOUR TELEVISION PICTURE SI I TFIFVISION NFWS 30(. u. S. and ATEST IN RADIO - ELECTRONICS - TELEVISION CANADA TSE FUTURE HOLDS GREAT PROMISE Neither chance nor mere good fortune BELL Telephone Laboratories lead the new capital needed to meet the service ahead. has brought this nation the finest tele- world in improving communication opportunities and responsibilities phone service in the world. The service devices and techniques. There is a tremendous amount of Americans enjoy in such abundance is to be clone in the near future and Western Electric Company provides work directly thc product of their own imag- the System's technical and human re- Bell operating companies with tele- ination, enterprise and common sense. the sources to do it have never been better. phone equipment of the highest qual- bil- Our physical equipment is the best in The people of America have put ity at reasonable prices, and can always of their savings into history, though still heavily loaded. and lions of dollars be counted on in emergencies to de- building their telephone system. They we have many new and improved facili- liver the goods whenever and wherever plant. Em- have learned more and more ways to use ties to incorporate in the needed. courteous. the telephone to advantage, and have ployees are competent and The long- standing Bell System policy continuously encouraged invention and The operating telephone companies of making promotions from the ranks initiative to find new paths toward new and the parent company work together assures the continuing vigor of the horizons. one place may so that improvements in organization. They have made the rendering of spread quickly to others. Because all telephone service a public trust; at the units of the System have thc same serv- same time, they have given the tele- ice goals, great benefits flow to the Wren these assets, with the traditional phone companies, under regulation. the public. spirit of service to get the message freedom and resources they must have through, and with confidence that the Similarly, the financial good health to do their job as well as possible. American people understand the need of the Bell System over a period of many for maintaining on a sound financial years has been to the advantage of the basis the essential public services per- IN Tltls climate of freedom and re- public no less than the stockholders and formed by the Bell System, we look sponsibility, the Bell System has pro- employees. forward to providing a service better vided service of steadily increasing value and more valuable in the future than It is equally essential and in the pub- to more and more people. Our policy, at any time in the past. We pledge our lic that telephone rates and often stated, is to give the best possible interest utmost efforts to that end. service at the lowest cost consistent with earnings now and in the future he ade- LEROY A. WILSON, President financial safety and fair treatment of quate to continue to pay good wages, Telepi anti Telegraph Company. employees. We are organized as we are protect the billions of dollars of savings American the E'4s A ,,unt I:pnrlJ in order to carry that policy out. invested in the System, and attract the (Frow BELL TELEPHONE LA BO It ATO 1111'.S EXPLORING AND INVENTING. DEVISING AND PERFECTING, FOR CONTINUED IMPROVEMENTS AND ECONOMIES IN TEL_PHONE SERVICE s liViaori SEND You 64 PACE BOOk See how I give you practical spare time while still learning. experience building Radio cir- Read letters from men I trained, cuits with lilt KITS OF telling what they are doing, earn- PARTS I SENP. Illustrated ing. See the kind of fascinating book shows Mow you make jobs Radio. Televisi:'n. Electronics EXTRA MONEY fixing Radios in offer. FREE with coupon below' Same coupon entiies you to FREE "superhet" circuits work, three rea- lesson, "Getting Acquainted With sons why tubes fail, locating defects, Receiver Servicing.' Discloses short- repairing loudspeaker. Over SO pic cuts Radio repairmen use. Tells how tures, diagrams. FREE. send coupon ! See for you/sell how /train you atiíome -to BE A RADIO-TELEVISION TECHNICIAN Want a good -pay job in the fast -growing RADIO - TELEVISION Industry? Want a money- making Radio - You Build This MODERN RADIO with Parts I Send Television shop of your own ? Here's your Complete, powerful Radio receiver brings opportunity. I've trained hundreds of men to in local and distant stations. NRI gives be Radio Technicians . MEN WITH NO you ALL the Radio parts ... speaker, PREVIOUS EXPERIENCE. My tested and chassis, trans- proved train -at -home method makes learning sockets, easy. You learn Radio -Television principles ¡former, from illustrated lessons. You get practi- loop antenna, cal experience building, testing, experi- menting with MANY KITS OF PARTS I send. All equipment yours to keep. MAKE EXTRA MONEY IN SPARE TIME The day you .u roll. 1 start wending SPECIAL BOOKLETS that show you how to make EXTRA MONEY fixing neighbors' Radios in spare time. From here its a short step to your own shop, or a good -pay Radio- Television servicing job. Or get into Police, Aviation. Marine Radio, Broadcasting. Radio Manufactur- ing or Public Address work. And think of getting in on the ground floor of the booming Television Industry. Trained men are already in demand . new stations are going on the air, manufac- turers are building over 1011,000 sets a month, more and more homes are get- ting sets. The man who prepares now will reap rich rewards. SEE WHAT N.R.I. CAN DO FOR YOU Act now ! Send for my DOUBLE FREE OFFER. Coupon en- I Also bt titles you to actual lesson. "GETTING ACQUAINTED WITH RECEIVER SERVICING," absolutely free. Over 811 pictures and diagrams! You also get my 114-page book. "IItiW TO BE A SUCCESS IN RADIO and TELEVISION -ELECTRONICS." Tells Send You Many more about YOUR opportunities, details of my l'ourse. how quickly, easily you can get started. Send commin in envelope or paste on penny postal. J. E. SMITH, President, Dept. 9HX. National Radio Other RADIO KITS Institute, Pioneer Home Study Radio School, Washington 9. D. C. I TRAINED THESE MEN Has Own Radio Business Extra Cash In Spare Time MR. J. E. SMITH. President, Dept. 9HX "Now have two Radio "Earned enough spare National Radio Institute. Washington 9, D. C. shops, servicing about time cash to pay for 200 sets a month. Have my Course by time I Mail me FREE Sample Lesson and 64 -page book about how to win Eill largest sery ic e estaMb- graduated. NRI train- success in Radio and Television- Electronics. (No salesman will call. lishment in S. E. is - ing is tops! " -ALEX- Please write plainly.) souri. " -ARLEY STU- ANDER KISH. Car- , DYVIN, DeSoto. Mo. teret, New Jersey. Name Age GET THIS Address S TRAINING UNDER City Zone. State G. I. BILL I VETERAN L ;]('heck If Veteran APPROVED FOR TRAINI \ NI/ER C. 1. RILE. 4 Hugo Gernsback, Editor -in -Chief these RADIO - Fred Shunaman, Managing Editor You Caafíylateh Ic1.1:/: i It/l\II:S M. Harvey Gernsback, Consulting Editor 1O!iiIffif/e:I ra/ues/ formerly RADIO -CRAFT Robert F. Scott, W2PWG, Technical Editor Plate Load R. H. Dorf, W2QMI, Associate Editor SNORT WAVE CRAFT TELEVISION NEWS RELAY RADIO IS TELEVISION I. Queen, W2OUX, Editorial Associate i''/ mon-ohm coil. SPST nor- 1[ Trademark reg,alered U. H. Patent Ornee ) mall- open contacts. Extra Angie Pascale, Production Manager sensitive and used for many Circulation Manager Business Manager Wm. Lyon McLaughlin, applications. 1%). high. 114' G. Aliquo Charles K. Brett ` wide, lek' mtg. rtes. Tech. Illustration Director . >I t 1'.,nn $1.19 Soles Managers John J. Lamson, Lee Robinson Silver Mica Button Condensers Contents August, 1949 Editorial (Page 17) Squeezing the Service Technician by the Editors 17 Television News ( Pages 18-31) Improve Your Television Picture (Cover Feature) by Allan Lytel 18 Booster Uses Standard Tuner by Matthew Mandl 22 New All Channel TV Antenna 24 kw- Trouble Shooting Television Sets by Irving Dlugatch 25 E F G The Tronspole Variotenna, Part 1 by Hugo Gernsback 28 Television Queries Answered by Dove Gnessin 30 $7.50 per 100 (all one type) Electronics (Pages 32 -37) MA-3538 ((:1 rit mod M.1 MA -3591 IDI 311 mmf Al Spectrometer Measures Mass of Chemical Ions by Jerry S. Adams 32 MA.3531 IF) 53 mmf M t Electronics in Medicine, Port X, Electron Microscope...by Eugene J. Thompson 34 MA -3503 (AI 75 mmf MA MA -3532 III) 75 mmf 1l \ Experimenting with Ultra -Violet Roys by Ernest J. Schultz 37 MA -3504 IA I 200 mmr V s MA -3519 IF) 250 mmf r: I Construction (Pages 38 -40) A High -Fidelity Tuner -Amplifier, Port II by M. Harvey Gernsback 38 #18 2- conductor Wire & Drum New Design (Page 41) Used for running 111- volt AI' lines, extension speak etc. Full 175 feel of highest qualit> s silo New Devices Exhibited at Chicago Parts Show 41 tough, weather-resistant insulation. 'omplsete r n Jill handy drum for mooting uvo r -, ra_ I.Imtii.I Audio (Pages 42.45) quantity 12.39 Improved Phono Amplifier by John S. Carroll 42 Notes on Sound Recording by Richard H. Dorf 43 BRAND NEW Frequency Bridge for Audio by K.
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