Broadcasting (July - Dec 1938)

Self-Locking Tilting Head Cannot be Acoustically Overloaded MULTI-UNIT Dual Diaphragm MICROPHONE An outstanding achievement in microphone construction for night club and public address installations. Maximum amplification without feedback. Cannot be acoustically overloaded. Made in two models. MU-2 constructed with two dual diaphragm crystal units using four diaThragms. MU-4 uses four dual diaphragm crystal units and eight diaphragms. Black and chrome. Complete with three-prong interchangeable locking connector and 25ft. cable. LIST PRICES MU-2 $29.50 MU-4 $39.50 ASTATIC Microphone Laboratory, Inc. Dept. 0-1 1 Youngstown, Ohio Licensed Under Brush Development Co. Patents UNIVERSAL MICROPHONE Co., Inglewood, Cal., will stage its annual interdepartmental boat race at Balboa, Cal. Sept. 5. Among those entering auxiliary power cruisers in the race are James R. Fouch, president ; Earl E. Griffin, chief engineer ; Les Willyard, technician and Bob Griffin, purchasing agent. Ralph L. Power, publicity and advertising director, will fire the starting gun. WMF.I, Daytona Beach, Fla., recently installed a new 148-foot Wincharger vertical mast, manufactured by Wincharger Corp., Sioux City, la. WSMK, Dayton, has applied to the FCC for modification of its construction permit to move its transmitter 1500 feet and supplement its present Collins transmitter equipment. The same 3-element 180 foot directional antenna will be used. WJBK, Detroit, is making surveys for a new location at which a new Blaw-Knox 178 ft vertical self-supporting radiator will be installed. VICTOR J. ANDREW, consulting engineer and manufacturer, announces the purchase of a new plant at 6429 S. Lavergne Ave., Chicago, adjacent to the Chicago Municipal Airport. WSLI, Jackson, Miss., has purchased an RCA 250-G 250-watt transmitter together with miscellaneous RCA transmitting equipment. WNBC, New Britain, Conn., has purchased an RCA 1-E 1,000-watt amplifier. D. W. ONAN & SONS, 43 Royalston Ave., Minneapolis, manufacturers of alternating current generating plants, are announcing new models of 2,000 and 3,000 watt, water cooled, AC generating units. "IT'S A BEAUTY AND DOES IT PERFORM!!99 That's what broadcasters have been saying about the new Gates 20-B Console type speech input equipment. And it is a beauty, the most beautiful piece of apparatus that ever graced a modern broadcasting studio. Performance? Well such things as a perfectly flat curve, inverse feed back, hum free operation plus the use of only linear standard components throughout harm no equipment and that's the way the 20-B is built. // you are planning equipment changes it will pay you to write for catalog BR20 describing this new Gates development. GATES RADIO & SUPPLY COMPANY QUINCY, ILL., U.S.A. AMERICAN Red Cross doctors gave NBC Hollywood engineers a few pointers in first aid during a meeting at the studios on Aug. 23. Here they are being schooled in artificial respiration. On the ground (left to right) are J. F. Morris and Bob Brooke, studio engineers; F. M. Figgins and J. H. Brown, maintenance supervisor and engineer respectively; J. E. Kay, C. L. Norman, C. H. Lorenz and C. E. Sorensen, all studio engineers. Kneeling (left to right) are M. S. Adams, field supervisor; R. G. Denechaud, M. O. Smith and M. F. MacKenzie, studio engineers; S. C. Hobart, control supervisor; P. A. Greene and A. L. Capstaff, studio engineers; and D. A. DeWolf, Hollywood engineer in charge. Dr. Albert Gordon, was speaker at this meeting, the third of a series describing and demonstrating methods of resuscitation and first aid. KDKA, Pittsburgh, on Aug. 20 was authorized by the FCC to operate a 1 kw. crystal-controlled Westinghouse transmitter on 1020 kc, from one hour after sunrise to one hour prior to sunset, for 30 days from Sept. 30 to test a new transmitter site for KDKA. Westinghouse plans to begin erecting a new station as soon as a site can be found. SAID to be the "northernmost directional antenna in the United States," the two new 179-foot Blaw-Knox vertical radiators of KABR, Aberdeen, S. D., were placed in operation in July under the direction of John Barron, 'Washington consulting engineer. Station recently shifted from local status to regional, operating with 500 watts night and 1,000 day on 1390 kc. A new WE transmitter is employed, and Mr. Barron designed the phasing equipment. NEW laboratory product recently introduced by Nash Radio Products Co., 5437 Lisette Ave., St. Louis, is said by the producers to relieve the surface tension on records and transcriptions and also to reduce scratch noises. The product is packaged in 2-ounce, 8ounee. and gallon containers. KFRO, Longview, Tex., has installed a new Gates compressor amplifier. RADIOSCRIPTIONS Inc., Washington transcription firm, has completed equipping a complete recording truck with Universal recorders, two complete amplification channels, RCA microphones and a 200-watt RCA public address system with 1 kw. gas generator. An RCA sound camera is also carried. Bayard Keough and R. J. Coar are in charge. UNIVERSAL MICROPHONE Co., Inglewood, Cal., has remodeled its recording division, installing new studios, coating and test rooms and storage space. The new studios are dust tight, air-conditioned and electrically heated. New WFAA-WBAP Mast WFAA-WBAP, Dallas-Fort Worth, plans to begin operation about Oct. 1 with its new vertical radiator, which its engineers claim will greatly improve the coverage pattern of the clear-channel station. A Truscon 653-foot uniform crosssection mast is being erected at the present transmitter site, about equidistant between Fort Worth and Dallas. WMRO are the call letters assigned by the FCC for the new local in Aurora, 111., authorized early in August by the FCC [Broadcasting, Aug. 151. NEW UNIVERSAL FULL FREQUENCY CUTTING HEAD The PERFECT electrically, magnetically and mechanically balanced cutting head. Produces clear crisp recordings — brilliant highs and full bass. No rubber or substitutes, nothing to deteriorate. Guaranteed day in and day out for uninterrupted service every day for years. Records freq. 30 to 10,000 cycles and over. Impedance 15 ohms. Requires + 14 db. input level, 2 or 3 watts. Climatically sealed. For replacement or new installations. U. S. Patent No. 2005154 f*-\ l4*uveAAcd MicsiOfdi&tte. Ga.r Jltd. INGLEWOOD, CALIFORNIA, U.S.A. "Oht Agents Frazar & Co.. 7 Front St. San Francisco Page 62 • September I, 1938 BROADCASTING • Broadcast Advertising