[chirp_users] BTECH MURS-v1 "Service Settings" squelch thresholds

[Jim Unroe]

On Mon, Aug 23, 2021 at 1:27 AM Bill Burgess
<burgess at alumni.stanford.edu> wrote:
>
> Hello,
>
> New subscriber here with a BTECH MURS-v1 question.
>
> My application involves emergency neighborhood communications in a spread-out, semi-rural area.  Being able to drop squelch to the bare minimum would be helpful in order to get the best possible range.  Unfortunately, the default carrier squelch thresholds on this radio appear to be relatively high, even for Squelch #1.  At least that’s my subjective impression.
>
> So I tried adjusting them with Chirp's Service Settings dialog.  My changes appeared to load onto the radio fine, and I offloaded them back to verify.  They came back as I had set them.
>
> However, my changes seemed to make no difference to the radio’s actual carrier squelch behavior.  Even a threshold of 0, which I would have thought would defeat squelch altogether, made no perceptible change in squelch behavior when the corresponding squelch ID was selected.
>
> This behavior is identical to that described in Bug #5333, and that was also a BTECH, though a UV-5X3 rather than a MURS-v1.
>
> Thanks a bunch for any thoughts or suggestions!
>
> Cheers,
> —Bill

CHIRP can't make a radio do something that it doesn't support. The
BTECH MURS-V1 support was developed from the BTECH GMRS-V1 support
which was developed from the Baofeng UV-82 support. The UV-82 supports
adjustment of squelch thresholds so that support was transferred to
the GMRS-V1 and eventually to the MURS-V1. It was just assumed that
the BTECH models supported this feature. Apparently they do not.

Jim KC9HI