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On March 1, 1941 W47NV began broadcasting in Nashville, Tennessee, [8] becoming the first fully licensed commercial FM station. [9] There was significant interest in the new FM band by station owners, however, construction restrictions that went into place during World War II limited the growth of the new service.
The AM-to-FM phenomenon began primarily in mid-sized markets, where there is more bandwidth and less competition, but has since progressed to large cities including New York City, where as of 2012 sports-talk AM stations WEPN and WFAN have both acquired FM stations with the intent to either move or simulcast their AM programming. By 2013 most ...
Regularly scheduled broadcasts of voice and music began in January 1921. That station is still on the air today as WHA. [93] On August 20, 1920, 8MK, began broadcasting daily and was later claimed by famed inventor Lee de Forest as the first commercial station. 8MK was licensed to a teenager, Michael DeLisle Lyons, and financed by E. W. Scripps.
Consisted of 27 stations (3 owned and operated and up to 24 "phantom stations" – time leased on affiliated radio stations. WEAF chain: Broadcasting Company of America: Northeast and Midwest United States 1923–1926 Regional network of AT&T-owned radio stations with New York City radio station WEAF as its hub.
FM uses frequency modulation of the radio wave to minimize static and interference from electrical equipment and the atmosphere, in the audio program. 1937: W1XOJ, the first experimental FM radio station after Armstrong's W2XMN, was granted a construction permit by the U.S. Federal Communications Commission (FCC).
The early shortwave stations: a broadcasting history through 1945 (2013) radioheritage.net; worldradiomap.com (Europe, Americas, Asia, Oceania) Europe: Broadcasting abroad (1934); The media in Europe at Google Books (2004) Africa: Head, Sydney W. Broadcasting in Africa: a continental survey of radio and television at Google Books (1974 ...
Before the early 1950s, when radio networks and local stations wanted to preserve a live broadcast, they did so by means of special phonograph records known as "electrical transcriptions" (ETs), made by cutting a sound-modulated groove into a blank disc. At first, in the early 1930s, the blanks varied in both size and composition, but most ...
The 1926 formation of the National Broadcasting Company was a consolidation and reorganization of earlier network radio operations developed by the American Telephone & Telegraph Company (AT&T) beginning in 1922, in addition to more limited efforts conducted by the "radio group" companies, which consisted of the Radio Corporation of America (RCA) and its corporate owners, General Electric (GE ...