Check out the website for Geoff Haines, N1GY, http://mysite.verizon.net/cpthaines/id1.html. He has written up computer headset adapters for Icom and Yaesu both. I have built one for my IC2720 and one for a Yaesu FT8800 and they work very well, as well as greatly improving the transmit audio on the 2720. 73, Carl WC0V