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I see that RR Database now has the following frequencies listed for mobile extenders:

172.275
465.125

I haven't heard much on the UHF frequency for the last couple of years and the VHF frequency is a new one to me. Can anyone provide some insight into these?

I always thought they used UHF so as not to interfer with the normal VHF frequencies. It also seems that I found a 172 Mhz frequency that was used for the troopers wireless mics (dashboard camera's).

Thanks ahead of time for clarifying this.