usa in the beginning all Fds were on ? 10 ? shortwave radio channels - maybe 1920
then countywide system sprung up on 33 mhz and 46 mhz - with most larger cities and many suburbs on the 154 mhz band then 450 mhz was added then 800 mhz was added the 700 mhz was added now - most major cities use 800T - with some simplex FG channels on 800 mhz or 700 mhz suburbs use all the bands rural areas mostly use 154 mhz and UHF now - very few agencies remain on 33 mhz or 46 mhz many counties have 1 uhf or vhf channel for countywide dispatch of all fire and ems units fireground channels might be done on countywide FG channels or on 'local channels' some states have statewide trunking systems - some do not - relatively very few FDs use these statewide TRS - TRS can be on VHF high or UHF or 700/800 -- You received this message because you are subscribed to the Google Groups "massfire" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/massfire/CAFXWwKZPaQ-M1COav9MPWruNq-%2BTkToaSegEefsh3vFZE10gmA%40mail.gmail.com.
