I am finishing up building a W8ZR Station Pro II. (Beautifully designed, BTW!) After wiring up my mic jacks, I noticed that there are a couple of outputs on the ICOM IC-756PII and IC-7600 xcvrs which I do not understand.
Pin 4 on the mic connector is assigned to "Main Readout Squelch Switch," and Pin 8 is assigned to "Main Readout AF Output." I have gone through the manuals, and I can not figure out what these functions do, or if they are even necessary.
Any information is appreciated.