Pin | Signal Description |
---|
1 | Power (+ 9V) |
2 | Battery charge |
3 | Handsfree sos |
4 | Handsfree extern (10K resistor to +9 to enable handsfree functions) |
5 | TXE |
6 | RXE |
7 | Ignition (10K resistor to +9 to illuminate the display continiously) |
8 | Antenna extern (10K resistor to ground to enable external microphone and antenna) |
9 | Audio 1 |
10 | Audio 2 (loudspeaker amplifier output) |
11 | Microphone (use electrect microfoon and 46 db preamp.) |
12 | Audio ground (do not connect to 13 and 14 ) |
13 | Ground (supply) |
14 | Ground (supply) |