9. Squelch knob [SQL]:
Rotate to set the squelch level.
10. Power/Volume knob [VOL]:
Rotate to turn ON/OFF the transceiver and adjust the volume.
MICROPHONE:
1. PTT switch [PTT]:
Press and hold to transmit; release to receive.
2. UP/DOWN keys [▲] [▼]:
Press to select operating channel, set mode setting, etc.
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