[App_rpt-users] Squelch Tail Elimination

[Chuck Henderson]

I have made some changes to the squelch code that I think will fix the
issues you are having but they are not included in the pre-compiled versions
on SVN.  To enable them it is necessary to download the source files,
edit src/HardwareProfile.h and change the line "// #define CHUCK" to "#define
CHUCK", in other words, remove the // from the beginning of the line.

Then compile the appropriate code version for your hardware version and
update the firmware in your RTCM.

Chuck Henderson,  WB9UUS



On Sun, Mar 29, 2015 at 9:01 AM, R. Wayne <allstar at controlservers.net>
wrote:

>   But as we said we are using a RTCM.
>
>  *From:* REDBUTTON_CTRL <jrorke at cogeco.ca>
> *Sent:* Sunday, March 29, 2015 5:09 AM
> *To:* app_rpt-users at ohnosec.org
> *Subject:* Re: [App_rpt-users] Squelch Tail Elimination
>
> The short answer is yes.
>
> What you need to do is bring out raw discriminator to the URI or USB fob.
> Then configure youfr node for USB radio to have
>
> Carrierfrom = dsp and ctcss from = dsp.
> you also need to set the rx demod to flat.
>
>
> [usbnode_num]
>
> hdwtype=0
> rxboost=1
> txboost=1
> rxctcssrelax=1
> txctcssdefault=131.8    ; default pl tone
> rxctcssfreqs=131.8    ;rx pl tone
> txctcssfreqs=131.8    ;tx pl tone if used
> ;rxctcssoverride=0
> carrierfrom=dsp    ;carrier squelch detection
> ctcssfrom=dsp    ; pl tone detection
> rxdemod=flat
> txprelim=yes
> txlimonly=no
> txtoctype=phase
> txmixa=voice
> txmixb=no
> invertptt=0
> duplex=0
> rxondelay=0
> rxnoisefiltype=0
> eeprom=0
>
>
> Save your settings and restart your Allstar node so the changes take
> affect.
> Do your audio calibrations.
>
> Then you will need to set the carrier squelch. Typically the default
> squelch setting in Allstar is below the threshold. So you will get squelch
> crashes.
>
> Do a "radio tune rxsquelch" at the cli with no signal at the receiver. It
> will return the current squelch setting and the current squelch level.
>
> *CLI> radio tune rxsquelch
> Current Signal Strength is 788
> Current Squelch setting is 500
>
> If the squelch level is below the signal strength then the carrier squelch
> is open.
> Set the squelch higher than the signal strength by about 80-100 points.
>
> *CLI> radio tune rxsquelch 820 <enter>
>
> Try the squelch. It should give you a "fast squelch" for signals that have
> 20 db quieting or better.
> then test the threshold and see how weak signal will open the squelch. You
> may have to tweak the squelch to liking.
>
> Once you have the squelch set correctly then save thew settings.
>
> *CLI> radio tune save.
>
> You should be good to go.
>
> Jon VA3RQ
>
>
>
>
>
>
>
>
> On 3/29/2015 1:33 AM, R. Wayne wrote:
>
>  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
>
>
> _______________________________________________
> App_rpt-users mailing listApp_rpt-users at ohnosec.orghttp://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users
>
> To unsubscribe from this list please visit http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users and scroll down to the bottom of the page. Enter your email address and press the "Unsubscribe or edit options button"
> You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
>
>  ------------------------------
> _______________________________________________
> App_rpt-users mailing list
> App_rpt-users at ohnosec.org
> http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users
>
> To unsubscribe from this list please visit
> http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users and scroll down
> to the bottom of the page. Enter your email address and press the
> "Unsubscribe or edit options button"
> You do not need a password to unsubscribe, you can do it via email
> confirmation. If you have trouble unsubscribing, please send a message to
> the list detailing the problem.
>
>
> _______________________________________________
> App_rpt-users mailing list
> App_rpt-users at ohnosec.org
> http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users
>
> To unsubscribe from this list please visit
> http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users and scroll down
> to the bottom of the page. Enter your email address and press the
> "Unsubscribe or edit options button"
> You do not need a password to unsubscribe, you can do it via email
> confirmation. If you have trouble unsubscribing, please send a message to
> the list detailing the problem.
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.keekles.org/pipermail/app_rpt-users/attachments/20150329/6b7706f3/attachment.html>