> It's my understanding that 19.2k just isn't possible with a soundcard.
Wrong. The main question is how much BW your radio provides. Having 10khz of BW 19.2k should be doable. Have a look at the DREAM software http://drm.sourceforge.net/ . It should get pretty close to 19.2 on 10khz BW, and exceed 19.2 on higher BW. DREAM has its own set of problems, mainly the long time to sync. You cant use that for packet out of the box.
