Radio annual and television yearbook (1942)

receivers, and the Stromberg-Carlson and Stewart-Warner 12 and 9-inch receivers. There are over a hundred owner constructed television receivers fabricated from Meissner and other kits, as well as completely according to the owners' design, A number of the latter give excellent operation, some utilizing 12inch cathode ray tubes giving actually superior images at 15 and 20 miles from W6XAO than would be expected from commercially manufactured models. PUBLIC DEMONSTRATIONS: Television receivers have been maintained by the Don Lee Broadcasting System at the following public places: Wilshire Brown Derby, Kiefer's Pine Knot Drive-In, Vine Brown Derby, Griffith Planetarium, Miramax Hotel, Hollywood Roosevelt Hotel, The Town House. Various radio stores have also held public demonstrations. PATENTS & RESEARCH: In addition to regularly scheduled programs, research work on television in all of its branches has continued at W6XAO. Membership on NTSC committees and testimony at F.C.C. hearings assisted in setting the commercial standards for television. WABD NEW YORK CITY Frequency: 78000-84000 Kc. (Sight, 79250 Kc.; Sound, 83750 Kc); Power: Sight, 1000 Watts; Sound, 1000 Watts Owned-Operated By Allen B. Du Mont Laboartories .Inc. Business-Studio Address. . . .515 Madison Ave. Phone PLaza 3-9037 Transmitter & Antenna Location. .. .515 Madison Ave. Personnel President Allen B. Du Mont W R G B SCHENECTADY, N. Y. Frequency: 66000-72000 Kc; Power: Sight, 10000 Watts; Sound. 3000 Watts Effective Signal Radiated 1200 Owned-Operated By General Electric Co. Business Address 1 River Road Phone Number 4-2211 Transmitter & Antenna Location New Scotland. N. Y. WMJT MILWAUKEE Frequency: 66000-72000 Kc; Power: Sight, 4180 Watts; Sound. 3350 Watts Effective Radiated Signal 1200 Owned-Operated By The Journal Co. Business-Studio Address 720 East Capitol Drive Phone Number Marquette 6000 Transmitter & Antenna Location .... 720 East Capitol Drive • W N B T NEW YORK Frequency: 50000-56000 Kc (Sight. 51250; Sound, 55750); Power: Sight, 12000 Watts; Sound, 15000 Watts Effective Signal Radiated 1800 Owned-Operated By National Broadcasting Co. Business Address 30 Rockefeller Plaza Phone Number Circle 7-8300 Studio Address 30 Rockefeller Plaza Transmitter and Antenna Location. .. .Empire State Bldg. Time on the Air: Full time commercial license Personnel Manager of Television Department, Noran E. Kersta Executive Program Director. .. .Warren Wade Chief Television Engineer. . . .Robert E. Shelby FACILITIES Technical facilities of Station WNBT include a direct pickup studio for live talent productions, a mobile television unit and transportable equipment. All facilities operate under technical standards established in 1941 by the Federal Communications Commission. The live talent studio, located in Radio City, is fitted with three camera chains. The cameras are of the Iconoscope type. A film scanning room has two cameras and specially adapted motion picture projectors for both 35 mm. and 16 mm. films. The mobile unit, mounted in two motor vans, is equipped with two cameras for direct pickup of a wide variety of outdoor and indoor programs at points remote from NBC's Radio City sight-sound studios. It has successfully relayed outdoor programs over a distance of 27 miles. Its video transmitter has an output of 400 watts; an associated sound transmitter is rated at 100 watts. The two operate in the relay channel of 162,000 168,000 Kc. Cable carried with the unit enables the field crew to operate cameras at distances up to 800 feet from the motor vans. The transportable equipment used by NBC television for remote pickups is a compact unit, weighing less than 1,000 pounds and divided into carrying cases, none of which weighs more than 90 pounds. The equipment * Station had construction permit at press 904