Re: [Svxlink-devel] Easy Digi

[SM0SVX <sm...@us...>]

Hi Danny,

On Sunday 08 November 2015 21:32:48 Fever Havannah wrote:
> Getting ANOTHER radio for EchoLink? ... lol ... the XYL will most
> definately revoke all marriage privileges ... ;) ...
> 
> I changed the settings for the TM-271 (with the Easy Digi interface) ...
> SQL_DET=VOX and changing PTT_PIN to DTRRTS stopped svxlink from keying the
> radio constantly ... however I have a few issues with the results ...
> 
> First ... sometimes DTMF number tones  are not recognised ... in particular
> #2 and #3 ... however all other DTMF codes are always recognised ... then
> sometimes it works again ...
> 
> Second ... the audio lacks base it has a very high pitch sound to it ...
> sometimes (mostly) it is inaudible ...

Both of the problems above may be due to feeding SvxLink with non-deemphasized 
audio. This will happen if you connect the sound card to the 9600bps receiver 
output for example. This is not a problem since SvxLink can do the 
deemphasizing. Just set DEEMPHASIS=1 in the receiver configuration.

It's actually a good idea to use the 9600bps output since that output usually 
have no audio filters. It is better to leave the filtering to SvxLink. That is 
especially true if you want to make use of CTCSS since the low frequencies are 
usually filtered out on normal audio output.

As someone else mentioned, make sure that your audio levels are adjusted 
properly.


> Third ... when I key for the first time (EchoLink test server) I get a full
> reply from start to finish played back to me ... when I key a second time 1
> second is cut from the start of the transmission ... if I key again 2
> seconds are cut off from the transmission ... and so on ... every key
> playback after the first key gets a second cut from the start so after a
> few keys I only get the last 1 or 2 words played back to me ... it is the
> same if I activate Parrot mode ...

No explanation for this but let's deal with the problems above first.

73's de SM0SVX / Tobias
 

> 
> Thank You
> Danny
> ZS6XOX