SDFD is not a federal dept. in san diego county, the city of san diego fire dept uses the VHF freqs. for example, our dispatch is 135.xxx
San Diego
FIRE - All general operations happen on the City trunked system. Each apparatus contains one 800MHz mobile radio and one VHF mobile radio (GE Phoenix). Bendix King portables are used for VHF. See "Codes and Maps" for VHF fleetmap. (RadioReference)
the reason i know this is because i bought a UHF radio and it was not compatible with the system. RR states that each apparatus contains one 800mhz radio, as this is outdated info. it is now on a trunked vhf channel, our dispatch is 135.xxx and talk groups are 134.xxx and fire ground tac groups/administration is 131.xxx
I know this because i work for them.