Pin outs are as follows: Pin 1 Int speaker high / speaker B / Pl / DPL (selectable) Pin 2 Mute (PL COS, voltage depends on radio band) Pin 3 Volume High / DPTT Pin 4 GND Pin 5 Switched A+ Pin 6 COS (5V = squelched, 0 v = un squelched) Pin 7 Filtered A+ Pin 8 GND Pin 9 Buffered Detector Output Pin 10 Ext PA Speaker / ID data (selectable) Pin 11 Mike PTT Pin 12 Monitor Pin 13 Mike Audio Pin 14 Int PA speaker / Mike Mute (selectable) Pin 15 Receiver Audio
E-mail me if you need more info. Andy -------------------------------------------------------------- NC Certified Firefighter III / EMT-A FCC Licensed Technician / Amateur Call NC4AB / Echolink Node 5761 <http://www.brinkleyelectronics.com/> www.brinkleyelectronics.com