KSFB
| City | San Francisco, California |
|---|---|
| Broadcast area | San Francisco Bay Area |
| Branding | Immaculate Heart Radio |
| Slogan | Sharing the Heart of the Christian Faith |
| Frequency | 1260 kHz |
| First air date | December 18, 1926 |
| Format | Catholic radio |
| Power | 5,000 watts (day) 1,000 watts (night) |
| Class | B |
| Facility ID | 6369 |
| Transmitter coordinates |
37°42′59″N 122°23′38″W / 37.71639°N 122.39389°W 37°42′58″N 122°23′38″W / 37.71611°N 122.39389°W auxiliary (backup) |
| Callsign meaning | San Francisco Bay |
| Former callsigns |
KOIT (AM) (1983–1985, 1986–2007) KXLR (July 1985–January 1986) KYA (AM) (1926–1983) |
| Former frequencies | 1230 kHz (1928–1941 NARBA) 850 kHz (November 1927–November 1928) 970 kHz (December 1926–November 1927) |
| Affiliations | Immaculate Heart Radio, EWTN |
| Owner | IHR Educational Broadcasting |
| Webcast | Listen |
| Website | San Francisco, CA - 1260 AM |
KSFB is an AM broadcasting station licensed on 1260 kHz at San Francisco, California. It broadcasts Immaculate Heart Radio, a Roman Catholic radio format, to the San Francisco Bay Area of the United States. It was previously known as KYA (AM) until 1983, and KOIT (AM) and KXLR after that.
The AM station was a simulcast of the former sister station KOIT-FM, and unlike that station, continued to be owned by Bonneville International until February 1, 2008, when it was officially sold to IHR Educational Broadcasting.
The station originated as KYA in 1926, and has had 14 owners and 4 different callsigns in 85 years. KYA was owned by everyone from Hearst Corporation to Avco Broadcasting of California, a subsidiary of the jet and aerospace contractor.
KYA went on the air on December 18, 1926, with 500 watts on 970 kc. from the Clift Hotel in San Francisco. The owners were Vincent I. Kraft of Seattle, who had started KJR (AM) there; and Frederick C. Clift of San Francisco. It got a license for 1,000 watts on 850 kc. in November 1927. Its studios moved to the Warfield Theatre Building at 988 Market Street, but the transmitter stayed at the Clift Hotel.
In November 1928 moved to 1230 kc. as part of a nationwide frequency reshuffling, and joined the Columbia Broadcasting System. By May 1929 its transmitter was reported to be at 680 Geary Street at Taylor Street. The station licensee went bankrupt in August, and KYA was transferred to a new corporation by the end of 1929. The transmitter facility was moved again, on 25 June 1930, to the Whitcomb Hotel. Having moved to various locations around the radio dial during the chaotic early days of broadcasting, KYA was assigned permanently to 1260 kc. as a result of NARBA in 1941.
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