One does AFSK A with the soundcard. FSK D is without a soundcard. (ASCII data (K3 Utility and a few others), TTL input at ACC Pin 1, CW entry through the paddles) 73, Don W3FPR On 5/4/2012 2:40 PM, Mike wrote: > Are you using it with an interface? You can't do FsK D with just the > sound card right? >