Codan 9390 - Microphone Socket

Appendix
9390 Reference manual 11-3
Microphone socket
The microphone socket is unmarked. It is located at the left of
the front panel.
4
37
2
1
6
5
Key reference
Pin Function
1 Loudspeaker audio output
2 Microphone input
3 Ground
4 Data in
5 PTT in (active low) and data out
6 Battery (switched)
7 Front panel speaker (ground return)