PSK

I know this has been asked before but I have not seen a satisfactory answer.

Has anyone got gpsk31, as provided with SUSE 9.1, working properly?  I can see 
that one needs to change the personal details within the config file, but is 
there anything else I need to do?  The comport setting appears to be correct 
as I can trigger the transmitter by clicking the tx button but nothing 
appears on the receive screen. And what about the frequency setting?  The 
default setting is 1000.  Hz?

In case I get no answer to that, does anyone have another recommendation for a 
good linux psk program? And if so, where to get it?

Gervase gw4urj