Microphone Lock Function - RCA MRM400 Instruction Manual

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1. Select the desired channel.
- Cancel Dualwatch, Tri-watch or scan in
advance.
2. While pushing [CH/WX], push [16] to edit
the channel comment.
- A cursor and the first character start blinking
alternately.
▲
3. Pushing [ ] or [▼] to select the desired
character.
- Push [16] or [CH/WX] to move the cursor
forward or backward, respectively.
4. Repeat step [3] to input all characters.
MRM400 TM VHF Marine Two-Way Radio Instruction Manual
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5. Push [DSC] to input and set the comment.
- Push [SCAN] to cancel.
- The cursor and the character stop blinking.

MICROPHONE LOCK FUNCTION

The microphone lock function electrically locks
▲ ▼
[ ] and [ ] keys on the supplied microphone.
This prevents accidental channel changes and
function access.
- While pushing and holding [HI/LO] on the
microphone, turn power ON to toggle the
microphone lock function ON and OFF.