I have an [clone of] an Icom OPC-478 programming cable for my IC-208H. I thought I read that I can use that same cable to do CI-V with my IC-706 if I can find an 1/8" mono (male) to 1/8" stereo (female) adapter.
If I understood correctly, the OPC-478 has a TRS with audio on T, data on R and ground on S, whereas CI-V is just a TS with data on T and ground on S. Do I have it right?