[chirp_users] TYT TH-UVF1 dual Band Handheld-Expanded Frequency Access

[Jim Unroe]

On Fri, Jul 11, 2014 at 5:14 PM, W David Seay <wdseay at msn.com> wrote:

> I have a TYT TH-UVF1 dual band handheld and it is supposed to be able to
> have access to expanded frequencies 136-174 and 400-480. I would like to be
> able to use for the GMRS which I also have a license for. I was told that
> the CHIRP software will allow to program these frequencies and it has done
> so but the radio still will not transmit outside of the amateur bands and I
> do not receive on the public safety frequencies which I would like to
> monitor since I am a firefighter and paramedic. If anyone has some advice,
> it would be appreciated.
>
> David
>

Hi David,

>From what it looks like, CHIRP is currently setup to allow entry of UHF
frequencies in the range of 420.000 to 470.000 MHz. I would also expect
that there is also some setting (that CHIRP doesn't currently support) to
set the lower and upper band limits. These are apparently set to the ham
band limits in your radio and need to be expanded.

If you would attach a copy of a .img file from your radio I could take a
look at it to see if the band limit settings can be located.

Another option would be download at try the .img file that is available in
the CHIRP repository. It already has some of the frequencies that you are
interested in already programmed so I would expect that the band limits
have already been expanded.

http://chirp.danplanet.com/projects/chirp/repository/changes/tests/images/TYT_TH-UVF1.img

So upload this image to your radio and try it out. If it works, transfer
your current channels over to a copy of this image (load both images into
CHIRP and use "copy & paste" to transfer the channels between tabs). Do not
upload your image back into your radio. If you do, the band limits will be
set back to what they were originally.

Jim KC9HI
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