[App_rpt-users] Squelch issue with RTCM and Kenwood

Tim Sawyer tisawyer at gmail.com
Mon May 1 19:51:33 EDT 2017


The RTCM will have longer squelch tails on weak signals or quick keys. Be
sure to set the squelch at least 3 full turns above threshold. You want it
to be around 350 or more on status menu 98. That will help.

Not sure if Chuck squelch will help. If you try it please post your
results.

On Mon, May 1, 2017 at 1:38 PM, Pierre Martel <petem001 at gmail.com> wrote:

> Always wanted to "play" with voting system and maybe simulcast. My primary
> site is on a wireless network that belong to a ham friend and he provide me
> with the bandwith and I use some IP in the 44.xxx.xxx.xxx range.
>
> He have a site where I could install a voting receiver. And I have a site
> where I could simulcast. the computer at the main site will be changed in
> the next few wek to a proliant dl320 g5p with 8 gig of ram and 3 tb of hard
> disk. It will run Dial and Xen, cause I want to virtualize some service for
> our Mesh. ( web and file server. asterisk for local mesh voip. and stuff
> like that.
>
> Anyone built there own voting board?
>
> I made many pc board in my life and want to maybe make a few to test all
> this.
>
> Is there some gerber or SCH files available to build a voter board?
>
> 2017-05-01 12:28 GMT-04:00 Lee Woldanski <ve7fet at tparc.org>:
>
>> 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/9e6938a0bd19db94
>> 77fcb15bf15820d9cb883daa#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 at 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 at tparc.org>
>>> To: Users of Asterisk app_rpt <app_rpt-users at lists.allstarlink.org>
>>> Subject: Re: [App_rpt-users] Squelch issue with RTCM and Kenwood
>>> Message-ID:
>>>         <CACaEaZ=oKYbY16wAZQeGTNieQ-kGAGQs=zHyGemPMjUAt3hSKg at mail.gm
>>> ail.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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>>
>>
>>
>> --
>> Lee Woldanski, AScT
>> VE7FET
>>
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>
>
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-- 
--
Tim
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