One of the uses of the station was to test Finch's sub-carrier facsimile system. Effective November 1, 1943, the FCC modified its policy for FM call letters, and the station was assigned new call letters of WFGG, which were changed to WGHF in 1945. Finch for a station in New York City at 45.5 MHz, which was issued the call sign W55NY. On October 31, 1940, the first fifteen construction permits for commercial FM stations were issued, including one to W. In May 1940, the Federal Communications Commission (FCC) announced the establishment, effective January 1, 1941, of an FM radio band operating on 40 channels spanning 42–50 MHz. The station traces its origin to an experimental Apex band radio station, W2XWF on 42.18 MHz, which was authorized in 1940 and licensed to radio engineer William G. December 1945 station advertisement as WGHF, featuring the station's experimental broadcast facsimile service.
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