Broadcasting Telecasting (Apr-Jun 1957)

STAND-BY TV TRANSMITTING ANTENNAS for channels 7-13 AURAL TRANSMITTER VISUAL TRANSMITTER A simple, versatile and economical standby system consisting of two separate bays of the AMCI Type 1020 Antenna mounted on a mast or existing tower leg can be used with a 50 kw transmitter. No diplexer of any kind is needed. The aural and visual transmission lines need not be of equal lengths. Write for Bulletin B-457. ANTENNA SYSTEMS COMPONENTS AIR NAVIGATION AIDS INSTRUMENTS ^fit A L FORD Manufacturing Co., Inc. ™* 299 ATLANTIC AVE., BOSTON, MASS. Page 92 • May 6, 1957 MANUFACTURING pany had reported reductions in earnings and sales for 1956 [B«T, March 25]. Aside from expressing hope for a "favorable decision in the near future" on subscription tv, Comdr. McDonald derided color tv, claiming brightness of monochrome images is reduced by two-thirds in color receivers. He said color models produced (but not marketed) by Zenith would have to be priced at $900 each to realize a profit. New GE Transistors Designed For Tvs, Radar, 2-Way Radio GENERAL ELECTRIC CO. has announced the development and initial commercial production of three new high frequency transistors that are expected to extend the applications for transistors into equipment now limited to vacuum tubes, such as tv sets, radar and two-way radio transmitters and receivers. GE also announced a line of long-life germanium rectifiers for replacing other types of rectifiers in existing tv sets. A similar line had been announced last December for designing into new sets^ Developed by engineers in GE's semiconductor products department, Syracuse, the new rectifiers are expected to outlast the set. The three new transistors are germanium tetrodes; that is, they have four leads for connecting to an electronic circuit. One of the new transistors is designed to amplify a 120 mc radio signal — the highest frequency yet attainable in a mass produced transistor, according to GE engineers. The transistors, designated 3N29, 3N30 and 3N31, have a common base connection and a bandwidth of 2 mc and are rated for a minimum of 10 db gain, respectively, at 30 mc, 120 mc and 15 mc. Malz Elected as President Of Webcor, Succeeding Haffa ELECTION of Nicholas Malz as president of Webcor Inc., succeeding Titus Haffa, majority stockholder, was announced at the annual meeting of the phonograph-recorder manufacturer in Chicago Monday. Mr. Malz, who has been executive vice president, joined Webcor in 1955 when Mr. Haffa assumed control. The latter has been serving as president and board chairman without compensation. Mr: Haffa expressed hope the company would soon declare its first cash dividend since last July. Despite record sales of approximately $34 million in 1956, Webcor lost $995,000 in net income, mostly from government contract business [B»T, April 22]. Earnings in the first quarter of 1957 were reported last week to be $354,914, substantially over the figure for that period last year. Government orders accounted for $2.5 million in sales. Solar Energy Converters HOFFMAN ELECTRONICS Corp., Los Angeles, announces the establishment of its solar division because of "the growing importance of the field of solar energy." The new division will be located in Evanston. 111., to develop and produce solar energy converters. Ford to Install Radio Sets In Rear of Some of Its Cars THERE will be a radio in the future of some Ford owners — even though it will take a back seat in some 1958 models. This "secret" was revealed last week by the Ford Motor Co., which plans to install receivers under rear seats in some of its automobiles. The tuning buttons will remain up front. Included in the radio is an automatic search-tuning device which brings on another station when one goes off the air. A memory circuit, used to avoid "losing" a station when driving through an underpass, retains a station setting for 10 seconds before retuning. Radios actually operate more efficiently in the cooler rear area and are more accessible for servicing, according to Ford. Antennas also are rear-positioned, following recommendations of automobile stylists the past few years. Hollingsworth Hopes to Show $5,000 Electronic Tv Tape Gear HOLLINGSWORTH Enterprises Inc., Hempstead, L. I., hopes to be able to demonstrate a new "all-electronic" tape television recorder that will cost about $5,000 when production is set, Lee Hollingsworth, president, said last week "The system is all-electronic in nature," Mr. Hollingsworth said, "and has only one moving part, namely the moving tape and required mechanical drive and takeup mechanism." Mr. Hollingsworth, who formerly owned WKBS (now WKIT) Mineola, L. I., and reports he now holds about 35 U. S. and foreign patents, declined to give other details of his system, pointing out it is still in the developmental stages. He believes the system will be ready for demonstration within a year. He explains the low price of his projected recorder by saying it does not require precision machinery. (Ampex Video Tape Recorder, fully equipped, runs to more than $100,000.) RCA Tv Tube Plant Busy RCA is now in substantial production of 21 -inch. 110-degree black-and-white tv picture tubes at RCA Tube Div.'s Marion, Ind., plant. More than 1 .000 tubes are being produced daily with the output expected to MICHIGAN'S POWERFUL 250 WATTER HEARD AROUND THE WORLD . . . WHLS is responsible for more newsworthy stories featured by A.P. than any other station in the country. 4 FULL TIME NEWSMEN Port Huron's community station Represented Nationally br Gill-Perna For Detroit — Michigan Spot Sales . Broadcasting • Telecasting