comments:
therealgariac posted on r/rtlsdr2w
I'm from the Bay Area. I don't think you have any broadcast FM near the airport. There is/was a KQED-FM repeater in Hayward. The tower is still up but I didn't see it on the FCC website the last time I looked. You can see the tower from 680. Airports are difficult to monitor since they are designed to talk to aircraft. This isn't land mobile radio. They are cheap enough to try: https://www.amazon.com/Broadcast-FM-Block-Filter-88/dp/B01LE9LRPM