RCA MRM400 Instruction Manual page 13

- While pushing and holding [CH/WX], push
[16] to enter channel comments programming
mode.
- Push to move the cursor backward.
- While turning power ON, push [16] to enter
Set Mode.
2. Channel / Weather Channel Key
- Select and toggle between the regular
channel and weather channel when pushed
momentarily.
- Push and hold for 1 sec. to start Dualwatch
or Tri-watch.
- Push and hold to stop Dualwatch or Tri-watch
when either is activated.
- Push to move the cursor forward.
MRM400 VHF Marine Two-Way Radio Instruction Manual
TM
Copyright © 2015 RCA Communications Systems
3. Digital Selective Calling (DSC)/Position Key -
See page 27 for details.
- Push to enter DSC menu.
- Push and hold for 1 sec. to show the current
position from a GPS receiver.
4. Squelch Control [SQL]
Rotate to set the squelch threshold level.
5. Power / Volume Control [VOL]
Rotate to turn the transceiver power ON and
OFF and adjusts the audio level.
6. Distress Key [DISTRESS]
Push and hold for 5 sec. to transmit a Distress
Signal.
7. Scan / Tag Key [SCAN]
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