C-Cable to connect FT-757GX to FC-757AT FT757GX pin Cable colour * Name FC-757AT pin 1 Black GND 1 2 Red D 2 3 White C 3 4 Orange B 4 5 Green A 5 6 Blue TX GND ( Not Used, do not connect ) 7 Yellow 13.5 volt 7 8 blue INH 8 Colour… Continue reading YAESU FC-757AT C-Cable