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Helnl Radio News Service
7/24/46
FIRST UTILITY RADIO GRANT MADE TO CITY OF COLUMBUS
In the first application and authorization of its kind, the Federal Communications Commission has granted construction per¬ mits to the City of Columbus, Ohio, for Experimental Class 2 Radio¬ telephone stations for use by its municipal power plant and water works. The authorization represents the first move to expansion of the Utility Radio Service as provided for in the FCC* s Report of Allocations of May 25, 1945.
In the grant of the Columbus application, the Commission noted that "in the operation of any electric light, power or water systems, numerous emergencies develop where prompt and effective action must be taken to correct the difficulty and protect the re¬ mainder of the system”. The FCC stressed that these emergencies require "a reliable communication system between the office and service or maintenance crews and the applicant's experimental pro¬ gram involves the development of radio facilities to provide a com¬ munication system for this purpose. "
Galvin Motorola equipment will be used and the transmit¬ ters will be located at one point in Columbus, the application stated, employing one mobile station to operate with 20 mobile units installed on city-owned vehicles. The system will be operated from either of two remote control points, the light plant and water works, on a frequency of 153, 59 megacycles, temporarily assigned.
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REPORT ON "PHOTOPHONE" COMMUNICATIONS UNIT AVAILABLE
A novel Germandeveloped "Photophone ”, captured by allied troops in North Africa, provides for short distance voice communi¬ cation over a beam of light, according to a U. S, Army Signal Corps report, now on sale by the Office of Technical Services, Department of Commerce, The Department of Commerce has announced that those interested in examining a "photophone " may communicate with Edwin Y, Webb, Jr., Chief, Electronics and Communications Unit, Technical Industrial Intelligence Branch,
The instrument, which resembles an oversized pair of binoculars mounted on a tripod, will transmit voices over a diffused light beam, or over an extremely narrow beam of white, red, or in¬ visible infra-red light, according to the report.
Used by the German Army for short distance communication, the "photophone" was considered useful for communications across rivers, valleys, or rugged terrain where telephone wires could not be conveniently laid. Another advantage of the instrument was that communications over the light beam could not be intercepted but could be stopped, however, by cutting the light beam,
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