Mic connection is aviation type GX16-6?
Pin 1 Mic Audio
Pin 2 Ground on receive (this is one of the speaker terminals
Pin 3 PTT ground to transmit
Pin 4 channel select (pin 6=Up Pin 3 through 22K =Down)
Pin 5 Ground
Pin 6 +13.8V
Digirig cable will look like:
GX pin 1 (Mic) → 3.5mm TRRS ring 1 (RIG_AFIN)
GX pin 5 (Ground) → 3.5mm TRRS sleeve (GND)
GX pin 3 (PTT) → 3.5mm TRRS ring 2 (PTT)
3.5mm TRS tip (Speaker) → 3.5mm TRRS tip (RIG_AFOUT)
3.5mm TRS sleeve (Ground) → 3.5mm TRRS sleeve (GND)