Darn it, Michael, your facts got in the way of my opinions43 years is a long time. I think you might be mis-remembering.
Now, I'm questioning ALL my Bay Area 70's-early 80s radio memories of CBS-FM...
(Cue harp music)
(VIDEO GOES ALL WAVY)
(DISSOLVE TO SHOT OF SIGNAL GEEK GAZING AT SKY)
(SG's voice echoing, as he struggles to recall what he heard 43+ years ago...)
"Did they actually have beautiful-sounding, very lengthy (I believe :30) identifiers with an orchestra bed that began with acappella singers saying "mussssic...", and ended with them slowly singing "When the sun goes down 'round the Bay, CBS-FM."?
"Did they actually call themselves Monster FM, after relocating to a more powerful signal?"
"Didn't the jocks go by first names only, to evoke a super-stoned vibe? Didn't I record a snippet of a CBS-FM jock saying "Steve with the music; Tim Weisburg (as they began playing his flute classic Dion Blue)?
Was I really being stroked by a peacock feather in a Marin hot tub, as I hear the station identify as "Mellow Rock"?
"Starting in early 1980, weren't they actually what would today be called "active rock" -- because the songs I recorded off their air at the time included Fleetwood Mac's "Tusk," the Rolling Stones' "Shattered," and Pink Floyd's "Another Brick on the Wall" (songs that were fairly current at the time)?
(VIDEO GOES WAVY AGAIN)
(BACK TO SHOT OF SIGNAL GEEK STARING AT CAMERA)
(audio reverts to normal voice)
Michael, was that all just a dream?