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CBN is a clear-channel radio station broadcasting at 640 kHz (AM) from St. John's, Newfoundland and Labrador, Canada, and is the local Radio One station of the Canadian Broadcasting Corporation. CBN broadcasts with 10,000 watts, unlike most other clear-channel, Class A stations, which broadcast with 50,000 watts. Per international agreement (NARBA), CBN is grandfathered at 10 kW and Class I-B (later renamed Class A, after the 1981 Rio de Janeiro agreement), whereas the dominant station on this frequency throughout the Americas is KFI Los Angeles, which operates with 50 kW and Class I-A (Class A, after "Rio"). == History == The station was founded in 1932 as VONF, broadcasting on 1195 kilocycles, and was owned and operated by the Dominion Broadcasting Company, a subsidiary of the Avalon Telephone Company (a predecessor of Bell Aliant). In 1934, it merged with a former competitor, VOGY/840, which had also launched in 1932. The VONF call sign was retained. On March 13, 1939, the Dominion Broadcasting Company was absorbed by the Broadcasting Corporation of Newfoundland, the pre-Confederation public broadcaster, as its first radio station. The frequency was eventually changed to its current 640 AM. BCN was absorbed by the CBC on March 31, 1949 when Newfoundland joined Canada. The call sign was then changed to CBN. CBN used to operate a 10,000 watt rebroadcaster CBNM in Marystown on AM 740 (and previously on 570), but this station was converted to FM in the 1980s. It is currently the largest CBC Radio One station in eastern Canada that is still located on the AM band. A clear-channel station, it reaches much of the eastern half of North America at night. Until April 27, 2007, CBC Radio's operations in St. John's were located on 342 Duckworth Street. Those operations are currently located on 95 University Avenue, where the television operations are also based. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「CBN (AM)」の詳細全文を読む スポンサード リンク
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