Re: [Svxlink-devel] Ctcss squelch
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From: Ad <pa...@gm...> - 2006-02-22 21:54:34
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Tobias, Thanks for the clear answer. I hope it wil be better in the next release of svxlink. Another question, I read somewhere that the audio is filtered with a high pass filter, Is that only on the rx audio or on all the modules like echolink? Is it also possible to add a ctcss signal on the tx audio configurable in conf file to set the frequentie and the volume and possible to stop the ctcss tone just before the release of the ptt so that it is a more quiet way of listening on radio= 's with ctcss decoder so that you don't hear the squelch tail. Grtz Ad PA3DPL 2006/2/5, Tobias Blomberg <sm...@us...>: > On Monday 30 January 2006 19:24, Ad wrote: > > Hello, > > > > I use since a few months svxlink. > > It's a nice very nice application. > > A feature i like very much is the ctcss squelch. > > But it works not ok here. > > When there is a qso on the rx frequentie (i don't want on the svxlink) > > without a ctcss tone the squelch open very often. > > I tried to lower the record slider on the alsamixer, it's getting less > > but than it doesn't react anymore on my ctcss tone. > > Are there more people with the same experience or what am i doing wrong= . > > You are not doing anything wrong. It simply is a bad implementation of CT= CSS. > I added it to SvxLink as a better alternative to using vox. The problem w= ith > it is that it check if there is energy on one audio frequency (e.g. 136.5= Hz) > but does not care if there are energy on other frequencies as well. This = will > make it sensitive to noise but still better than using vox. > > I have an idea of how to improve it but I have not gotten around to imple= ment > it yet. > > If you want to share the channel using CTCSS right now you'll have to use= an > external detector (e.g. a receiver with a built in detector) and connect = the > squelch signal to a serial port pin (DSR, CTS, DCD, RI). > > 73 de SM0SVX / Tobias > > > > > > Grtz from a happy svxlink user > > Ad Pa3dpl > > > > > > ------------------------------------------------------- > > This SF.net email is sponsored by: Splunk Inc. Do you grep through log > > files for problems? Stop! Download the new AJAX search engine that ma= kes > > searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! > > http://sel.as-us.falkag.net/sel?cmd____________________________________= ____ > >_______ Svxlink-devel mailing list > > Svx...@li... > > https://lists.sourceforge.net/lists/listinfo/svxlink-devel > > > ------------------------------------------------------- > This SF.net email is sponsored by: Splunk Inc. Do you grep through log fi= les > for problems? Stop! Download the new AJAX search engine that makes > searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! > http://sel.as-us.falkag.net/sel?cmd=3Dlnk&kid=3D103432&bid=3D230486&dat= =3D121642 > _______________________________________________ > Svxlink-devel mailing list > Svx...@li... > https://lists.sourceforge.net/lists/listinfo/svxlink-devel > |