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Radio-Electronics-19 L lcrusll't TELEVISION NEWS ex, I .I:I:i I4 JI% S HUGO GERNSBACK, Editor formerly LADY TELEVISION ENGINEER SEE TELEVISION NEWS =1949= NOV _IS= 1949 30r U. S. una CANADA LATES IN RADIO - ELECTRONICS - TELEVISION www.americanradiohistory.com 4 diiit YOUR TELEVISION WILL BE IMPROVED WITH A D OUTDOOR AERIAL P;74; The modern miracle of pictures by air can be a most satisfying means of entertainment. But be satisfied only with a picture comparable to a class "A" motion picture-on every station in your area. It is unnecessary to compromise! HERE'S WHY: Television waves are like light beams - solid objects reflect and refract them, making it impractical to pick up all stations from an indoor aerial. That is why you get double images on some stations. In addition, indoor aerials have poor signal pickup making it difficult to get good pictures on all stations. FURTHERMORE: Your indoor antenna may have a high noise level which increases the amount of interference as you ad- vance the contrast control to bring up a weak picture. All of these technical difficulties are eliminated by a WARD out- door aerial installed by a competent radio serviceman. In every case, a Ward outdoor antenna will improve reception over an indoor aerial. Also, Ward aerials are so well de- signed, they are attractive on a house. It is unnecessary to compromise! WARD is the largest and oldest exclusive maker of television and auto radio aerials. Does the antenna on your automobile need repair? Replace it with WARDS'S 8- BALL - world's largest selling auto aerial. WARD PRODUCTS CORPORATION 1523 E. 45TH STREET, CLEVELAND, OHIO Division of the Gabriel Company www.americanradiohistory.com 3 I'LL TRAIN YOU FOR YOUR FCC LICENSE A Federal Commune at sins C irnmissiun Commercial Operator's License puts you In line for a good job in Radio or Tek- vision Broadcasting, Police. Marine, Avia- tion, Two-way, Mobile or Micro -wane Re- lay Radio. Mail coupon below for book and catalog (both FREE) about my NEW Communications couse. YOU BUILD THIS TRANSMITTER with parts I send. This low -power broadcasting transmitter shows you how to put a station "on the air." You perform procedures demanded of Broadcast Station Opera- tors, conduct many experiments, make many practical tests. with MANY KITS of MODERN EQUIPMENT I SEND 110W FAST Radio -Television À Ever think Communications is changing. developing. MY COURSE INCLUDES growing? Have you considered what this amazing progress can mean to you? were 943 Broadcasting aarmwi .v`.mrnma In 1945, there Stations. Today 2,694 are on the air! TELEVISION 112 Result- THOUSANDS OF QUALIFIED MEN STEPPED INTO GOOD JOBS. Only the air in 19 Television Stations were on Course Is New! Different! Today there are more than 50 and YOU MEASURE current. 1947. facts about my experts say there will be 150 in a few Mail coupon now for YOU BUILD DC and RF), re- in Radio - voltage (AC, 1,000 within three years. That NEW, intensely practical course this Transmitter Power Supply months, Let me send sistance and impedance in cir- means thousands of well -paid jobs for Television Communications. experiments in of 78 les- used in the basic cuits with Electronic Multi- trained Operators and Technicians. Then you FREE books. Read outlines frequency written for you by leading Com- RF and AF amplifiers, tester you build. Shows how add development of FM, Two-way Radio. son texts munications experts. edited by my practi- multipliers, buffers, etc. circuits be- Police. Marine, Aviation and Micro-wave basic transmitter what all this means! cal staff. See the nine big Kits of Parts amp sta- Relay Radio! Think have; needed to maintain jobs, more jobs for beginners! Better I send that "bring to life" theory you New you tion operation. jobs, better pay for experienced men! learn. Read about the transmitter build and operate, about the Electronic Are you a beginner who wants steady you get. All equipment yours work in this growing field? My NEW Multitexter to keep. My BRAND NEW course includes course can help you get an FCC License Experience. want. you BOTH Theory and Practical and prepare for the job you Are Radio -Tele- in Radio or with result -getting kits. in a man with some training backed by operator? My NEW vision Communications. It's 14117-% Radar, or a Licensed world's oldest and largest You increases the value of N. R. I. -the course modernizes, study Radio school. SET UP code amplitude and gM your knowledge and experience! home frequency modulation circuits YOU a Mail Coupon Fer Beek FREE (put voice, music, etc., on "elec- BUILD this Wavemeter and Servicing Training trical signal" you produce). You use it to determine frequency Send today! See what my NEW course by N. R. I. I get you ready for a introduce, correct defects, learn of operation, make other tests Also Offered in like. Find out how If you prefer a good -pay job in Radio - future, better earnings, more best performance. on transmitter currents. brighter how to get Television Servicing or your own in Radio-Televison. Send coupon Sales and security money-making Radio-Television or paste on penny postal. Service Shop. l'll train you at home. My now in envelope famous Servicing Course also includes many NO OBLIGATION. NO SALESMAN r I TRAINED THESE MEN Kits of Parts. You conduct experiments and WILL CALL! My books, sent to you tests with modern Radio and other circuits FREE, tell the full story. J. E. SMITH, have been to several kinds to make $t, "I am row Chief Engineer "I you build. 1 also show you how Radio In- now President, Dept. 951X, National of Radio Station WORD, in of Radio wok. I am $10 a week or more EXTRA MONEY fixing Ra- stitute, Wash charge of four engineers. ' specialising Marine neighbors' Radios while training. Full infor dio telephone installations 9, D. C. Owe all I know about Radio mation in my 64-page catalog. Mail coupon. ington to N. R. I." -C. J. BUR - and service." - MURRAY OM _ DETTE. Spartanburg, S. C. am DICKSON, Paducah. Ky. I "Thanks for splendid Home "When I enrolled, I had no Study Radio Course, a large idea of entering Commercial 1f.4/L #01,8001t FREE factor in my getting present Radio. Nod Operator. Police F_ position as Senior Radio Op- Radio Station WASP and Highway Station WKSJ. " E. SMITH, President, Dept. BMX ,, emu.-e of Station WRGI! "- - MR. J. / G. DeRAMUS, Selma, Ala. -. C. LISTER, Pensacola, Fla. National Radio Institute, Washington 9, D. C. "Hold a Radio telegraph "Am now Chief Engineer at I Mail me FREE Catalog and Book about Rádio and Tele- Second Class License. Now Radio Station WAGC. Still I vision Communications opportunities and training. (No R. I. texts as with Coil Service as I- using my N. salesman will Please write plainly.) Electrical Engineer."-ase"- swell references." - CHAS. I call. OTIS L. WRIGHT, Altai- W. STOKELEY, ChatW nooga, Tenn. Age .. 4 - queryur, N. M. ...at I Name Address GET THIS TRAINING WITHOUT COST UNDER City Zone State. Check if Veteran Approved Under G. I. Bill VETERANS G. I. BILL. MAIL COUPON. ID www.americanradiohistory.com Hugo Gernsback, Editor -in -Chief RADIO Fred Shunaman, Managing Editor 1:1.1:1:iR11\ I/:S M. Harvey Gernsback, Consulting Editor formerly RADIO -CRAFT Robert F. Scott, W2PWG, Technical Editor lemroeratlee elAYg ISION NEwS R. H. Dorf, W2QMI, Associate Editor RADIO e ISION Tr.dem.rk registered U. S. eu,rna UmeS I. Queen, W2OUX, Editorial Associate John J. Lamson Angie Pascale, Production Manager Sales Manager Wm. Lyon McLaughlin, Lee Robinson Technical Illustration Director General Manager G. Aliquo Circuiullon manager Contents_ November. 1949 Editorial To the Service Technicien by Hugo Gernsbock 19 FM (Pages 20 -22) Limiter -Discriminator versus Ratio Detector by H. K. Milward and R. W. Hollows 20 Television News (Pages 23 -30) S SECOND HEATING Lady Television Engineer by Tex Borborite 23 no waiting, saves power Indoor and Built -In Antennas -Their Strong and Weak Points..by Ira Kamen 25 Television Station List 27 RIGID-TIP Tv Custom Instollations by David T. Armstrong 28 latest in tip engineering Theory and Engineering (Pages 31 -32) Microwaves, Part VII. by C. W. Polmer 31 LONGER REACH Amateur (Pages 33 -34) full 51/4 inches How to Become o Ham, Part II- Learning the Code by George Shuart 33 SOLDERLITE Code Practice Stations 34 - spotlights the work Broadcasting and Communications (Pages 35 -36) Case of the Elusive Blip.. by James W. Essex 35 STREAMLINED Sideband Suppression by I. Queen 36 perfectly Test Instruments (Page 37) balanced Tracer Uses Tube as Probe by Alva R. and Kenneth W. Wilson 37 DUAL HEAT Electronics (Pages 38 -39) single heat Cameros Are Tested with Simple Setup .by Fred C. Gabriel 38 200 watts, Construction (Pages 40-41) dual heat Miniature -Tube Receiver Hos Permeability Tuner...'by John E. Hozelrigg 40 200/250 Push -Pull Crystal Receivers by Rufus P. Turner 41 watts; Audio (Pages 42 -43) 115 volts, Design of Class -B Drivers by W. H. Anderson, VE3AAZ 42 60 cycles Servicing (Pages 44 -60) Service Technicians Hold Convention (see The Radio Month, page 9) You can do every kind of soldering Service Data, Technicians, and Money by John T. Frye 44 with this new 250 watt Weller Gun. Curing I.F. Oscillations by John A. Dewar 46 Power -packed, it handles heavy Home Study Courses Useful to Radiomen by Samuel Freedman 47 work with ease -yet the compact, Radio Set and Service Review (Eicor Model 1000 Tape Recorder) 50 lightweight design makes it equally Fundamentals of Servicing, Port IX -The Diode Vacuum Tube..by John T.
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