I wanted to use Ham Radio Deluxe with my Icom radio. It requires an CI-V
interface. Being the cheapskate that I am, I checked the internet for "roll
your own" information.

What I found looked really familiar, turns out it is identical to an
interface I built to program my Radio Shack Pro 95 scanner. Plugged it in
and it worked just great.

This means you can purchase a RadioShack 20-289 cable for $24.99 and replace
the high dollar CI-V if you choose not to build your own.