PSK Interface

Since I do a lot of PSK and occasional RTTY, SSTV, and such, I built a simple interface to connect between the Icom IC-718 and computer. It has audio isolation, COM port driven PTT, and an Icom CIV circuit. An early version of the interface also had a microphone mute switch but that was ommited in this design as I rarely have the microphone plugged in anymore.

If you are interested in building one of your own, here are the schematics (in PDF).