Copyright © 2015 RCA Communications Systems
53
MRM400
TM
VHF Marine Two-Way Radio Instruction Manual
TROUBLESHOOTING [continued]
Question
Possible Cause
Solutions
Ref.
page
Can not transmit.
Channel set to weather
channel or 70 channels.
Exit the weather channel or 70 channels.
20
High power can
not be selected.
Some channels can only
transmit at low power.
Choose another channel.
17
Radios on the
same channel
can not talk.
1.
The channel is
different frequency.
1. Select another channel with
the same frequency.
2. Set the current channel to
the same frequency.
18
49
No beep
Beep off
Open the beep function in the settings mode.
48
Can not transmit
a distress call.
MMSI code is not set.
Hold down the [DSC] key to boot
into MMSI setting mode.
27
No sound from
the speaker.
1. Squelch level too high.
2. Volume level too low.
3. Speaker has been
exposed to water.
1. Rotate [SQL] knob to adjust the squelch level.
2. Rotate [VOL] knob to adjust the volume.
3. Remove water with WaterClean function.
18
18
23