Michael - I recall that in the early 80s in San Francisco, KSFO did a huge TV ad campaign trying to eek the last years out of the MOR format, and you're right - there was a lot of AC (light rock) mixed in. But those commercials were amusing, with "real" middle aged people (actors I'm sure, but you know, balding, overweight) "grooving" to the sounds of KSFO. IIRC, the slogan was "Radio Real Music." I don't recall if the station was still Golden West (Gene Autry) or after. IIRC, the format only lasted a year or two longer, then KSFO became the AM repeater for KYA-FM Oldies.
Llew, I believe the Golden West sale of KSFO was December of 1983.
What's funny is that, as the Beautiful Music FMs converted to the "Continuous Soft Hits" version of AC, AMs in a lot of cities were getting back to even older music. Looking at the success of KPRZ and KMPC in Los Angeles, as well as KFRC as Magic 61, the 20/20 hindsight smart play would have been for KSFO to go pure standards. If Gene Autry had held onto it, perhaps they would have.
But again, that format was about squeezing as much revenue as possible from a demo the agencies no longer wanted. KMPC (which forced KPRZ out of the format) and KFRC did okay for the first five years or so, but by the early 90s, it was clear that you couldn't run what were then big AMs on the little bit of advertising targeting that audience. KMPC got out in 1992, KFRC in 1993.
Enter Saul Levine (in Southern California) who flipped KGIL from talk to Standards (as KJQI) eight months after KMPC got out. But even Saul, patron saint of lost formats, could only get two and a half years out of it before deciding it couldn't fly. He went back to that well a few times (in between attempts at news, classical, jazz and oldies), but we are, as we've discussed before, running out not only of advertisers willing to pay, but 100-year-olds alive to listen. Which is why Saul's "Unforgettable L.A." is now just an internet stream (ironically still running the IDs as "Unforgettable 1240, KNRY, Monterey" even though that signal switched to the KSUR oldies format earlier this year).
Fact of the matter...it's always been an 18-49 (or 25-54) world. The glory years of KMPC and KSFO were when they were targeting and delivering that demo. When they had to make a music change to do so in the early 70s, it cost them, because the new crop of young adults had been raised on more music and weren't going to sit still for 18 minutes of commercials, two newscasts, lengthy personality talk times and six records an hour...and the older listeners bailed for beautiful music FMs (a lot of those Cadillacs, Lincolns, Chryslers, Buicks, Oldsmobiles and Mercurys the 50-plussers bought in those days had FM receivers in them), which could survive on 50-plus because of the lower cost of automation and---for a while---the creative selling technique of targeting upscale advertisers (Mercedes-Benz, The Wall Street Journal).