Andy, I use a USB "sound adapter", now available for only $7.50 from computer geeks.com
http://www.geeks.com/details.asp?invtid=HE-280B&cat=GDT I just use a Radio Shack audio cable with a 1/4" earphone plug on one end and a 1/8" mini-plug on the other end to the Mic input of the USB sound adapter for receive. For transmit, I cut a Radio Shack stereo patch cable with 1/8" miniplugs in half, and solder two wires from a microphone plug for the transceiver to the cut end and plug that into the USB sound adapter earphone output jack. I then just use the transceiver VOX for PTT. I did not even need any isolation transformers (which I usually need for my Yaesu FT-980) with other interfaces, in order to prevent feedback. The SignaLink USB also works, but costs $100. 73, Skip KH6TY
