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CBLA-FM
CBLA-FM (99.1 MHz) is a non-commercial radio station in Toronto, Ontario, Canada. Owned and operated by the Canadian Broadcasting Corporation, the station is the flagship station of the CBC Radio One network, broadcasting a mix of news and talk. In addition to the Toronto market, CBLA also reaches much of Central Ontario with a network of twelve rebroadcasters. The studios are in the Canadian Broadcasting Centre.
CBLA-FM has an average effective radiated power (ERP) of 55,100 watts, peaking at 98,000 watts. The transmitter is atop First Canadian Place, at King and Bay Streets. It uses a directional antenna to avoid interference with stations in the U.S. Besides a standard analog transmission, CBLA streams its programming online.
CBLA's origins date back to March 5, 1928. That was the official sign on of CKGW at 910 AM, a commercial station owned by Gooderham and Worts, with studios at the King Edward Hotel. However, Gooderham & Worts had been operating the station on an experimental basis from as early as 1925.
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 sign CRCT until 1937, when the station was purchased outright by the CBC and adopted the call letters CBL. It moved 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.
With North American Regional Broadcasting Agreement (NARBA) in 1941, the station moved to 740 kHz. Its former channel, now 860 kHz, went to CFRB (which would relocate to 1010 kHz in 1947), while the 840 kHz clear channel was relocated to Louisville, Kentucky, where it was taken 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 kHz, switching to 1420 in 1939 and then to 1010 in 1941. CBY is now CJBC 860, Toronto's Ici Radio-Canada Première French language station.
In 1946, CBL-FM was launched, bringing the CBC's FM network (now known as CBC Music) to Toronto. It originally broadcast on the same 99.1 MHz frequency now used by CBLA, but moved to 94.1 in 1966. 99.1 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-FM in Sudbury or CBQT-FM 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.
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CBLA-FM
CBLA-FM (99.1 MHz) is a non-commercial radio station in Toronto, Ontario, Canada. Owned and operated by the Canadian Broadcasting Corporation, the station is the flagship station of the CBC Radio One network, broadcasting a mix of news and talk. In addition to the Toronto market, CBLA also reaches much of Central Ontario with a network of twelve rebroadcasters. The studios are in the Canadian Broadcasting Centre.
CBLA-FM has an average effective radiated power (ERP) of 55,100 watts, peaking at 98,000 watts. The transmitter is atop First Canadian Place, at King and Bay Streets. It uses a directional antenna to avoid interference with stations in the U.S. Besides a standard analog transmission, CBLA streams its programming online.
CBLA's origins date back to March 5, 1928. That was the official sign on of CKGW at 910 AM, a commercial station owned by Gooderham and Worts, with studios at the King Edward Hotel. However, Gooderham & Worts had been operating the station on an experimental basis from as early as 1925.
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 sign CRCT until 1937, when the station was purchased outright by the CBC and adopted the call letters CBL. It moved 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.
With North American Regional Broadcasting Agreement (NARBA) in 1941, the station moved to 740 kHz. Its former channel, now 860 kHz, went to CFRB (which would relocate to 1010 kHz in 1947), while the 840 kHz clear channel was relocated to Louisville, Kentucky, where it was taken 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 kHz, switching to 1420 in 1939 and then to 1010 in 1941. CBY is now CJBC 860, Toronto's Ici Radio-Canada Première French language station.
In 1946, CBL-FM was launched, bringing the CBC's FM network (now known as CBC Music) to Toronto. It originally broadcast on the same 99.1 MHz frequency now used by CBLA, but moved to 94.1 in 1966. 99.1 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-FM in Sudbury or CBQT-FM 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.