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CBLA-FM is a Canadian radio station. It is the flagship station of the CBC Radio One network, broadcasting at 99.1 FM in Toronto, Ontario. CBLA's studios are located at the Canadian Broadcasting Centre, while its transmitter is located atop the First Canadian Place. == History == The station originally aired in 1925 as AM 910 CKGW, a commercial station owned by Gooderham and Worts. Due to the instability of frequency allocations in North America at the time, the station's frequency changed several times over the next number of years, to 960, 690, and finally clear channel 840. In 1932, the station was leased by the CBC's predecessor, the Canadian Radio Broadcasting Commission. It used the call letters CRCT until 1937, when the station was purchased outright by the CBC and adopted the callsign CBL, moving to a new transmitter facility in rural Hornby. The 650 ft guyed mast that the station transmitted from was for many years the tallest structure in all of Canada.〔http://www.nydxa.info/archive/1999/NYDXA0899.PDF〕 With NARBA in 1941, the station moved to 740 kHz; its former channel, now 860, went to CFRB (which would relocate to 1010 in 1947), while the 840 clear channel was relocated to Louisville, Kentucky, where it was occupied by WHAS. (See Canadian allocations changes under NARBA.) Between 1938 and 1943, CBL had a rebroadcaster, CBY, to supplement coverage in Toronto. CBY broadcast on 960, switching to 1420 in 1939 and then to 1010 in 1941. CBY is now CJBC 860, Toronto's Première station. In 1946, CBL-FM was launched, bringing the CBC's FM network (now known as CBC Radio 2) to Toronto. It originally broadcast on the same 99.1 frequency now used by CBLA, but moved to 94.1 in 1966. (The 99.1 frequency was vacant until 1977, when it was assigned to the CKO radio network. CKO ceased operations in 1989, and the frequency was again vacant until it was assigned to CBLA.) CBL established a large low-power relay transmitter (LPRT) network in Northern and Central Ontario during the 1950s and 60s. These transmitters, all on AM frequencies, mainly rebroadcast the CBL signal but also offered some separate regional programming directed towards the regions served by the LPRT network in place of some local Toronto programming. One example of this was the daily ''Northern Ontario Report'', which aired in the late afternoon. Most of these LPRT network transmitters now rebroadcast CBCS in Sudbury or CBQT in Thunder Bay. Some of these transmitters have switched to FM as well, or have been shut down as FM transmitters covering areas served by multiple AM transmitters have signed on. In 1997, CBL applied to the Canadian Radio-television and Telecommunications Commission for conversion to FM. AM 740's daytime signal easily covered Buffalo, New York; Erie, Pennsylvania and Youngstown, Ohio. It was also powerful enough to serve as the CBC outlet for the Waterloo Region as well. Its nighttime signal reached much of the eastern half of North America (including three-fourths of Canada). However, radio frequency interference made the station nearly unlistenable in some parts of downtown Toronto. In a controversial decision, the CBC was awarded the 99.1 frequency〔(Decision CRTC 97-362 )〕 over Milestone Radio, which had applied to open an urban music station, and which would have been the first station operating under that format in Canada, to serve the city's large black community. Adding to the controversy of the CBC being awarded a station on the FM band in the country's biggest market, 99.1 was believed at the time to be the last available FM frequency in the city. On June 18, 1999, the station completed its move to FM, adopting the CBLA calls. CBL remained in operation for an additional day, broadcasting a recorded loop listing alternative FM frequencies for any remaining listeners. The final announcement ran thus: The CBC subsequently surrendered two relay transmitters outside the city which overlapped with the CBLA signal. In 2000, the CRTC awarded one of the new frequencies to Milestone, who launched CFXJ in 2001, and the other to Aboriginal Voices, who launched CFIE in 2002. The Hornby transmitter was leased to the new occupant of 740, CHWO, in 2001. That station is now known as full service oldies station CFZM. The Jarvis Street transmitter site was demolished in 2002 to make way for the RadioCity condominium development. 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「CBLA-FM」の詳細全文を読む スポンサード リンク
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