Hi,
You can put the frequencies on any channel you wish, the channels are just your
radio selections for those frequencies.
Glenn
----- Original Message -----
From: Chris Romp
To: [email protected]
Sent: Monday, February 21, 2022 4:57 PM
Subject: Re: [chirp_users] GMRS Channel Locking
Hello,
I have a question about how CHIRP handles GMRS radios, e.g. BTech GMRS V1 and
Retevis RB26. I've noticed that CHIRP enforces that GMRS channels follow the
FRS channel number and frequency pairings, e.g. Channel 1 is 462.5625, Channel
18 is 462.625, etc. I've been trying to find in the FCC regs if this mapping
is a requirement of GMRS operation. The only place I've found the channels
spelled out is on 47 CFR Part 95B §95.563 "FRS Channels" (link), but GMRS seems
only to specify the frequencies and bandwidth which may be used via Part 95E
§95.1763 "GMRS Channels" (link). It's entirely possible that I've missed the
clause requiring this mapping, and I am not a lawyer, so apologies if I've
overlooked it.
When I am programming a GMRS radio, I don't always want what my family refers
to as our "channel 1" to be 462.5625. Likewise I may want to set up different
repeaters that may use the same frequencies, but different tones (especially on
radios where I cannot edit the tone from the radio itself) I am able to
program the RB26 to accept an alternate GMRS-legal frequency with a little
trickery, so there does not seem to be a firmware restriction enforcing this
and it hasn't bricked my radio (yet).
Would it be possible for CHIRP to accept GMRS-legal frequencies in any
channel slot, and not require the FRS channel-frequency mapping?
Thank you,
Chris Romp
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