When I was PD of all-talk and sports KTNQ in LA in the later 1990's, KGO was very much a model of what I thought a talk station should be.
KGO did a magnificent job at "stationality" with at least 30 and usually around 50 mentions of "KGO" every hour. The individual talents had unique personalities, but they fit-and-flowed throughout the day. You could always tune in and listen to something both new but consistent at any time. And the presentation was rather well balanced for the mood of the market; it was neither ultra "progressive" (before someone invented that term) nor too far right of the center.
Because there were plenty of phoners, we got a variety of perspectives. I never thought KGO was "uber-left". It did reflect what I thought was the mainstream of the Bay Area, but at that time it was hardly "ultra" anything. For many years, it was a magnificent radio station.
I just want to echo this and add a personal perspective.
Between the ages of 21 and 28 (1977-84), I lived in Reno.
I'd go frequently to San Francisco for daytrips, and the first station I'd want to listen to was KFRC, which was easy. About 45 miles west of Reno, even in daytime, 610 was listenable, and by the time you'd get to Sacramento, it was as strong as the locals.
I would punch around between KFRC, KNBR (then a very good personality Adult Contemporary station), and the music FMs like KYUU, KIOI, KSAN, KSFX, KOME and KMEL, too.
I'd usually drive back to Reno after dinner in the city---four hours, usually at least part of it in the dark. And by that point, I'd be burned out on the hit singles and album cuts, so I'd often punch up KGO somewhere between Vallejo and Fairfield (half an hour to 45 minutes out of San Francisco), figuring that I'd go back to music when I got bored in half an hour or so.
More often than not, I'd end up staying on KGO for the remaining three-plus hours of the drive home---the radio programmer in me marveling at just how damn good it was and the listener in me totally drawn in by the topics, the hosts, the callers and the quality of the local and network newscasts. Sometimes, as soon as I got in my apartment, I'd tune in KGO just to hear them finish the topic.
It was, as
@DavidEduardo says, a magnificent radio station.