Hi James,

Chuck Henderson, WB9UUS, made a couple modifications to the code... one I believe actually fixes a bug in how the RSSI is calculated (which is probably your issue), and the other changes squelch action.

A previous thread here:

http://ohnosec.org/pipermail/app_rpt-users/2016-June/014314.html

If you look in the source code, you can find the specific changes:

https://github.com/AllStarLink/voter/commit/9e6938a0bd19db9477fcb15bf15820d9cb883daa#diff-902b8b89ad121ef28ac411b101fd6194

The predominant issue here was even if the received signal was full-quieting, if it was a short transmission, it could cause a long squelch tail.

As for how the RSSI is calculated... if you look at the RSSI in Allmon, without this patch, you'll see the RSSI level jumping all over the place, especially on noisier signals. With the patch, things are much more stable.

Firmware images with and without the patch enabled are available on the repository for you to try out. They should be there for all hardware flavors:

https://github.com/AllStarLink/voter/tree/master/board-firmware

If you are using a MicroNode RTCM, you will likely want the "SMT V1.5 Chuck" file.

Lee

On Mon, May 1, 2017 at 8:18 AM, James Cizek <james.m.cizek@gmail.com> wrote:

Firmware version 1.50

I guess I am not familiar with a "Chuck squelch patch" so am guessing that I am not running it! Can you help point me to information?

Thanks!

James

Date: Mon, 1 May 2017 08:11:40 -0700
From: Lee Woldanski <ve7fet@tparc.org>
To: Users of Asterisk app_rpt <app_rpt-users@lists.allstarlink.org>
Subject: Re: [App_rpt-users] Squelch issue with RTCM and Kenwood
Message-ID:
<CACaEaZ=oKYbY16wAZQeGTNieQ-kGAGQs=zHyGemPMjUAt3hSKg@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Hi James,

What firmware are you running in the RTCM's? And are you running firmware
with the "Chuck Squelch" patch enabled?

Lee

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