Cumulus Media is further trimming its portfolio by returning the license of 560 KZAC San Francisco to the FCC, ending the station’s nearly century-long history.
The company had kept the station silent since March 2025 after moving its programming to 810 KGO in November 2024.
During that silent period, Cumulus told the FCC it was negotiating a sale that ultimately did not materialize.
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Originally launched as 1390 KTAB Oakland in 1925, the station shifted frequencies before settling on 560 in 1929. It adopted the KSFO call letters in 1935 and retained them until 2024, when Cumulus transferred the intellectual property to the former 810 KGO frequency. The two stations simulcast until KZAC went silent.
Acquired by Gene Autry’s Golden West Broadcasters in 1956, the station ran a middle-of-the-road format into the early 1980s, followed by adult standards and oldies. It flipped to talk in 1993 and later became a conservative talk outlet after becoming co-owned with the former KGO.