When receiving distress message:
HM380 model has two receivers, one receiver used for receiving/transmit voice and another
receiver used to continually monitor 70 channels. The DSC function of HM380 is operated in
separate way which means any arriving DSC message will not be ignored even if you are using
HM380 for transmitting or receiving. If you want to check those messages, please press
“CALL/MENU” to enter “Receive Call Log” for checking all received DSC messages.
VOL/AIS Control
Short press “VOL/AIS” key and “VOL” icon will be shown on LCD, then press Up/Down
key or rotate “POWER” key to toggle as you wish.
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