Hi Patrick,
Thanks for reply. I thought about Direwolf as I have used it on HF a few years back but I abandonded it and I use the UZ7HO Soundmodem now.
I wonder if Direwolf can support a TNC for APRS. I think it doesn't though because it does AX25 with the soundcard.
As it is our IGATE uses a TNC and I think that abandoning the TNC in favour of a Soundcard will cause more problems such as lack of PTT etc.
On the other hand YAAC can talk directly to the TNC and all it needs is an imroved plug-in with bidirectional access to port 14580. This will make things a lot easier and it will allow us to keep using the TNC at our local IGATE/DIGI instead of having to look for a suitable Soundcard Interface for the RPi in order to use Direwolf.
Thanks again though.
73 de Demetre M0SUY