CHP F1 band?

[mibzzer15]

I was listening to Fremont PD searching for a suspect of a stolen vehicle after a foot chase a few minutes ago, 11:35pm on Sunday night. The FPD dispatcher told the FPD officer to switch to the CHP F1 band to communicate with him. Any idea what this F1 band is?

 

[mibzzer15]

Also, did FPD switch from using 9-80 for emergency traffic only to using a code 33 police code? I heard the dispatcher ask if they wanted a code 33 for the foot chase and short vehicle pursuit, when they usually ask for a 9-80.

 

[Oakland_Tower]

My guess is that the F-1 frequency is a mutual aid simplex. Those chp 700 mhz portables probably have programmed in some mutual aid channels just for this purpose. Lots of cities on 700-800 P25 these days. The dispatcher said "band" to indicate the F subset channels. I think FPD uses A subset (a1,a2, etc). Just a guess.

 

[inigo88]

"F" for 'Frequency' used to be used quite frequently as an alpha tag denoting "Channel" in older radios (especially those with two character displays). So "F1" would be short for 'Frequency 1' aka 'Channel 1.' This is different from modern radio programming which tends to use a letter and a number to denote the bank/channel (or vice versa). So in a modern Motorola radio, "F1" would be in zone F (the 6th bank), mode 1 (the 1st channel on the channel knob).

If Fremont PD has older radios in the patrol cars (like SFPD's back up low bands), it's probably the former. If they were referring to their EBRCS mobile or portable radios, it's probably the latter (where F is a mutual aid/conventional zone).