HF-90 Operation & Installation Guide
9. EXTERNAL CONNECTO
9. EXTERNAL CONNECTO9. EXTERNAL CONNECTO
9. EXTERNAL CONNECTORS
RSRS
RS
Pin No. Function
1 Microphone 1
2 Transmit data
3 Receive data
4 Loud speaker
5 Press to talk
6 Ground
7 Microphone 2
8 +5 Volt
The illustration above shows the
pin numbers on the front panel
microphone connector.
54
Section 9
Microphone connector (front panel) - male
Pin No. Function
1 Ground
2 Loud speaker
3 Aux. power
4 +12 to +28
Volt
The illustration above shows the
pin numbers on the rear panel
power connector.
Power connector (rear panel) - male
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