Thanks, Dave, g4aon for the information. Guess I need to get a rs-232-to usb cable from Elecraft. The 232-to-232 cable wouldn't work. The 9 pin 232 on the PC refused to be recognized. XP didn't even show a "new hardware found" after it was installed between the PC & the K3. It's a pleasure to have such support. Bill Wade Ai4PF