Interview with Allen Shaw, the ABC exec who brought "Rock N Stereo" to the ABC FM O&Os. Interesting note here:
"San Francisco: KGO-FM changed calls to KSFX. Formatted AOR never worked in that market, owing to what Shaw describes as “KSAN being such a strong fortress of San Francisco counterculture in rock. We could never get any ratings against them until we went to urban/dance in the mid-1970s. We actually made some money and got some good ratings. You can take a format that is kicking ass in every other city in America, put it on in San Francisco and nothing happens.” [....]"
Full text: http://www.radioinfo.com/2012/08/24/the-state-of-rock-radio-part-five/
"San Francisco: KGO-FM changed calls to KSFX. Formatted AOR never worked in that market, owing to what Shaw describes as “KSAN being such a strong fortress of San Francisco counterculture in rock. We could never get any ratings against them until we went to urban/dance in the mid-1970s. We actually made some money and got some good ratings. You can take a format that is kicking ass in every other city in America, put it on in San Francisco and nothing happens.” [....]"
Full text: http://www.radioinfo.com/2012/08/24/the-state-of-rock-radio-part-five/