RCA MRM400 Instruction Manual page 53

TROUBLESHOOTING [continued]
Question
Channel set to weather
Can not transmit.
channel or 70 channels.
High power can Some channels can only
not be selected. transmit at low power.
Radios on the
1. The channel is
same channel
different frequency.
can not talk.
No beep Beep off
Can not transmit
MMSI code is not set.
a distress call.
1. Squelch level too high.
No sound from 2. Volume level too low.
the speaker. 3. Speaker has been
exposed to water.
MRM400 VHF Marine Two-Way Radio Instruction Manual
TM
Possible Cause
Exit the weather channel or 70 channels.
Choose another channel.
1. Select another channel with
the same frequency.
2. Set the current channel to
the same frequency.
Open the beep function in the settings mode.
Hold down the [DSC] key to boot
into MMSI setting mode.
1. Rotate [SQL] knob to adjust the squelch level.
2. Rotate [VOL] knob to adjust the volume.
3. Remove water with WaterClean function.
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