Basic Operation; Power On / Off; Receiving And Transmitting - RCA MRM400 Instruction Manual

10. TAG Channel Indicator
Appears when a TAG channel is selected.
11. Busy Indicator
Appears when receiving a signal or when the
squelch opens.
12. Transmit Indicator
Appears while transmitting.

BASIC OPERATION

POWER ON / OFF

1. Rotate [VOL] clockwise to turn power on.
2. Rotate [VOL] counter-clockwise to turn
power off.
MRM400 VHF Marine Two-Way Radio Instruction Manual
TM
Copyright © 2015 RCA Communications Systems

RECEIVING AND TRANSMITTING

■ Transmitting
1. Push [HI/LO] on the microphone to select
the output power if necessary.
- "LOW" appears when low power is selected.
- Choose low power for short range
communication; choose high power for longer
distance communication.
- Some channels are for low power only.
2. Push and hold Push to talk (PTT) to transmit,
then speak into the microphone.
- "TX" appears.
- Channel 70 cannot be used for anything
other than DSC (distress alerts).
3. Release [PTT] to receive.
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