[FlexNet] Soundmodem in linux

[Arnau Sanchez]

Hello,

I am trying to use soundmodem-0.5 in Linux with SB128 PCI. At first I
want to test it without radios (crossing SpeakerOut and Microphone
between two computers).

The problem is that when I send a packet I immediately receive it (in
the same PC)  because the another SB plays in the speaker what he gets
in Microphone. I cannot avoid this bucle, with the mixers I have (I have
tested a lot) there is no way to elimate the output of a recording
source. It is strange because if you use the Windows mixer you can
select if you want to output a signal (no matter if it is selected for
recording or not)

Does anyone know how to solve this?

And, has anyone proved the newqpsk modulation for HF?

thanks,

arnau