[chirp_devel] Request Guidance to Add CHIRP Support for the Baofeng UV-5RAX 150/220 MHz Radio

[Jim Unroe]

On Thu, May 2, 2013 at 9:46 PM, Jim Unroe <rock.unroe at gmail.com> wrote:

> Hi Group,
>
> I've been trying to figure out the best way to add CHIRP support for the
> Baofeng UV-5RAX dual-band radios that cover 136-174 MHz and 220-260 MHz.
>

Still trying...

>
> I have been thinking that I just need a way to figure out a way to detect
> if the radio is a VHF/UHF model or a VHF/220 model and then use that to
> select between the following rf.valid_bands.
>
>   rf.valid_bands = [(136000000, 174000000), (400000000, 520000000)] #
> VHF/UHF
>
>   rf.valid_bands = [(136000000, 174000000), (220000000, 260000000)] #
> VHF/VHF220
>
> I think I have a way to detect the difference. Below are the 1st 16 bytes
> of Baofeng UV-5R radios. The BFB231 is representative of firmware version
> BFB230 through BFB281 where the firmware verson was identified.
>
> BFB231 (136-174/400-520)
> 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
> AA 42 46[42]32 33 31 DD 00 25 60 13 00 25 60 13  ªBFB231Ý.%`..%`.
>
> The BFB291 is representative of firmware versions BFB291 and later. The
> format was revised to contain the lower and upper limits of each band.
>
> BFB291 (136-174/400-520)
> 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
> AA 36 74[04]00 05 20 DD 00 25 60 13 00 25 60 13  ª6t... Ý.%`..%`.
>
> The BFB296 is representative of firmware versions from a VHF/220 radio.
>
> BFB296 (136-174/220-260)
> 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
> AA 36 74[02]20 02 60 DD FF FF FF FF FF FF FF FF  ª6t. .`Ýÿÿÿÿÿÿÿÿ
>
> Note the byte that I have surrounded with square brackets. On firmware
> BFB290 and lower, this will always be '42'. On firmware for a VHF/UHF
> radio, this will always be '04' or '05'. And finally on a VHF/220 radio
> this will always be '02'.
>


>
> So if some way byte 0x0003 could be read so that rf.valid_bands can be set
> to
>
>   rf.valid_bands = [(136000000, 174000000), (400000000, 520000000)]
>
> except when 0x0003=02 then it would be set to
>
>   rf.valid_bands = [(136000000, 174000000), (220000000, 260000000)]
>
> Does this make sense? How would I go about it? is there a better way?
>

No. This makes no sense because it won't work. Once an image is uploaded
from another model, these first bytes will be replaced. :(

>
> It was discussed that the VHF/220 radio could be handled as a different
> Baofeng model. I guess I'm not opposed to that if that is what the
> consensus is. How would that be done?
>
> Thanks in advance.
>
> Jim KC9HI
>
>
>
>
> Jim
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