I remember back in the early 70's picking up WLS at night on a weekend trip to the Lake Almanor area in Northern California. I liked how they used their call letters to stand for "We Love Summer." So true back in my high school days.
In the SF Bay Area we had KYA, full of personalities all day long, and KEWB aka Channel 91. KSFO was totally old school and did the personality thing to the hilt, played more old standards which I enjoyed, along with comedy bits by the likes of Nichols and May and Bob & Ray, and broadcast all of the SF Giants games. I listened to them a lot. More locally, we had KLIV, which also had personalities and more importantly, had a beach/surfer focus and provided regular traffic reports from "Cloud 9" restaurant at the summit going over to Santa Cruz.
KSFO is still around, but it's hate-talk radio now. KLIV is still around, but its' all news, delivered by inexperienced and tongue-tied interns, it seems. The other frequencies have changed their call letters. One is talk, the other is churchy.
KCBS, however, remains. All news as it has been for decades. It is basically the ancestor of the very first commercial radio station ever, which was then KQW, right here in downtown San Jose. In thrift shops and antique stores, you can still find KQW, KPO, and KYA stuck onto selector buttons of old console radios.