[chirp_devel] [UV-5R] Support for 144/220 Model and Band Expansion

[Jim Unroe]

I'd like to look into expanding the CHIRP UV-5R driver to work with the
newly released 144/220 models (UV-5RAX and others). I have acquired 2 CHIRP
image files from 2 different owners of this model, and there doesn't appear
(to me anyway) to be anything in the file that can be used to distinguish
if the image came from a 144/440 model or a 144/220 model. I'm pretty sure
using the firmware version would be a bad idea.

What I have currently done is to expand the programmable bands to be

        rf.valid_bands = [(100000000, 199999999), (200000000, 999999999)]

This makes the VHF/UHF band split at 200 MHz and should be compatible with
both radio models and the OEM software. It also allows the user to program
all frequencies that the UV-5R is capable of accepting. It will still be up
to the user to determine the useability of the frequency entered.

The appropriate changes would also be made to the Work Mode A/B VFO
Frequency presets so the correct band will be automatically selected (the
VHF/UHF split is currently at 400 MHz).

What I have done works fine on my old BFB231 144/440 model. I'm ready to
try it out on some other radios but I thought I'd come here and solicit
some feedback before I asked for volunteers to test what I have done.

Thanks,
Jim KC9HI
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