Thanks, Bruce. I may try Fldigi again, then. I also overclocked mine 10% and I disable Conky when running other programs and that significantly improved operations. It really never gets hot, as you noted. As for adding more USB ports, I have a hub that I use to connect CAT, the sound card dongle, and the GPS dongle. It was also used initially to connect a keyboard and mouse when I was setting it up, but it has been run headless ever since. The whole thing is powered by the 5v port on a small battery pack (sitting on top of the rig in teh photo) that also powers the radio in the field, but just running the Pi it lasts literally for days.
Vic WA4THR