Hi all,
"You are correct about not everything being in the FCC database; I monitor a lot of things that I can't find in the database!"
That all depends on what you're monitoring and how you use the search. First of all the FCC doesn't license government transmitters, that's another agency. Then too you may not recognize the licencee, for example Conrail frequencies (CSX/NS Combined Assets) are listed to Penn Central Communications even though PC itself no longer exists. Look them up in NJ and wonder why they're in Detroit MI, that is until you click on "locations". Then there is the REAL mystery, public service agencies may legally transmit on a low power non interference basis using frequencies they're not licensed for.
Oh Christa, how can you manage to figure out what they're doing in SF? After all it's in CALIFORNIA, a foreign republic that defies the imagination and I'm amazed you don't need a passport (but you do need a translator). Live until you die? Oh well, that's San Fran fer ya. (;->)