PIN OUT FOR AUDIO 2 Connector

DB9 on back of RF-350K

1 - PTT

2 - RX Audio

3 - RX Audio

4 - TX Audio

5 - TX Audio

6 - Ground

7 - unused

8 - unused

9 - unused

Pins 2 and 3, 4 and 5 are 600 Ohm Balanced lines and are isolated through transformers.

RX Audio is fixed at +12 dbm.

TX Audio is adjusted by r-29 on the exciter board.