3. DSC Menu key [MENU] (MMSI):
Press to enter DSC menu.
Press and hold this key for 1 second to display the MMSI code on the channel comment display.
4. Scan / TAG key [SCAN] (TAG):
Press to start/stop normal scan or priority scan.
Press and hold this key for 1 second to set or delete the current channel as a TAG (most used channel) channel.
The favorited channels can be set by the TAG channel setting.
Press and hold [HI/LO] key on microphone and [SCAN] key for 3 seconds to delete all TAG channels in the selected channel group.
5. Clear key [CLR]:
Press to clear setting, or exit DSC menu.
6. Enter key [ENT]:
Push to enter DSC menu settings, channel comments, etc.
7. [▲] [▼] / [U/I/C]:
Press to select operating channel, set mode setting, DSC menu items, etc.
While pressing and holding the [SCAN] key, press [▲] or [▼] to adjust the brightness of the LCD and key backlight.
Press both keys to sequentially select the USA, International or Canadian channel groups.
While pressing and holding both keys, turn ON the transceiver to activate vibration draining function.
8. Distress key [DISTRESS]:
Press and hold this key for 3 seconds to transmit a distress call.
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