[App_rpt-users] Squelch Tail Elimination

[Jeff Carrier]

Crank your RTCM squelch pot 4-5 turns past the threshold.  I have a voted
system that was doing the same thing.  Also make sure your ctcss line from
the receiver to the rtcm.  I had one of the ctcss output lines programmed
 wrong when I was setting it up and everything was CSQ.

On Sun, Mar 29, 2015 at 11:01 AM, Bryan Fields <bryan at bryanfields.net>
wrote:

> I believe he's using the RTCM, so the usbradio commands will not work.
>
> On March 29, 2015 12:33:30 PM EDT, Ken <ke2n at cs.com> wrote:
>>
>> There are two squelch tails.  One in the user’s receiver which  can be
>> eliminated by using tone squelch and turning off the PL some time before
>> dropping the carrier.  Some commercial rigs respond to the reverse phase
>> tone burst. That is unusual in amateur rigs I think. And some amateur rigs
>> require the tone to be turned off longer that the app_rpt default.  This
>> all has to do with the squelch tail being generated in the user’s receiver.
>>
>>
>>
>> But if you want the *repeater* not to transmit a squelch tail - from its
>> own receiver - then you need:
>>
>>   Rxsquelchdelay  in usbradio.con
>>
>> as previously discussed in :
>>
>> http://ohnosec.org/pipermail/app_rpt-users/2014-April/009175.html
>>
>>
>>
>> for example
>>
>> rxsquelchdelay=50 ; delayline in ms, carrier squelch tail eliminator
>>
>>
>>
>> this requires use of the usbradio channel driver.
>>
>>
>>
>> 73
>>
>> Ken
>>
>>
>>
>>
>>
>>
>>
>> *From:* R. Wayne [mailto:allstar at controlservers.net]
>> *Sent:* Sunday, March 29, 2015 1:34 AM
>> *To:* app_rpt-users at ohnosec.org
>> *Subject:* [App_rpt-users] Squelch Tail Elimination
>>
>>
>>
>> After relocating our MSF 5000 to a new location and adjusting the squelch
>> as low as we could reliably go we noticed that we have a squelch tail. Our
>> coordination requires that we don’t. It appears that the MSF has a fixed
>> squelch tail elimination method an no control other than cranking up the
>> squelch again. This is surprising since we use PL encode / decode. I would
>> think that the PL would mute as soon as the user unkeys.
>>
>>
>>
>> With this said is there anything in Allstar that would help with this
>> situation?
>>
>>
>>
>> Wayne
>>
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>>
> --
> Bryan Fields
> 727-409-1194
> http://bryanfields.net
>
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