Now there's some history. 103.7 is one of those Bay Area frequencies that has had probably a dozen formats since then.Off the top of my head, here at the changes to 103.7 since those days:
1. "Love FM" I think they called it - around 69-70, that automated ABC album rock format out of New York with Brother John Rydgen, Tony Pigg, and others.
2. "Rock N Stereo" 104 KSFX - like KLOS in Los Angeles, but not successful like KLOS.
3. "Musicradio" KSFX - 1973 or so (?) a copy of the legendary Top 40 77/WABC in New York - also not successful.
4. 104 KSFX with a soul music sound that morphed in the mid-late 70s into "Disco 104" to ride out the disco era. Had a long run until disco tanked.
5. KGO-FM Talk Radio FM 104 in the early 80s - the ABC Talk radio network, with shows primarily out of New York. Later some local shows, such as Don Chamberlain's "Sex Talk" show - a very explicit version of what Bill Ballance started in LA with the "Feminine Forum." Ultimately not a ratings winner, and ABC sold the station.
6. 103.7 KLOK-FM "Yes/No Radio" (essentially light rock) late 80s. The "Clock-FM" gimmick was that you could call to up-vote or down-vote songs on the play list.
7. Smooth Jazz KKSF - had a long run in the 90s. Ultimately bought and ruined by Clear Channel
8. iHeart's various versions of Classic Hits, starting with "Oldies 103.7, "The New 103.7," "The Bay's 103.7" (branding seemed to change monthly), finally morphing into the current "iHeart
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And I've probably left out a few formats...I know there were one or two between #7 and #8.