CBLA-FM
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| City | Toronto, Ontario |
|---|---|
| Broadcast area | Greater Toronto Area, Central Ontario |
| Branding | CBC Radio One |
| Frequency | 99.1 MHz (FM) |
| First air date | 1925 |
| Format | public broadcasting |
| Language(s) | English |
| ERP | 55.1 kWs average 98 kWs peak |
| HAAT | 303.7 meters (996 ft) |
| Class | C1 |
| Callsign meaning | Canadian Broadcasting Corporation, Great LAkes |
| Former callsigns | CKGW (1925-1932) CRCT (1932-1937) CBL (1937-1999) |
| Former frequencies | 910 kHz (AM) (1925-1941) 740 kHz (AM) (1941-1999) |
| Owner | Canadian Broadcasting Corporation |
| Sister stations | CBL-FM, CJBC-FM, CJBC, CBLFT-DT, CBLT-DT |
| Webcast | Listen Live |
| Website | CBC Radio One |
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.
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. 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.)
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