Congratulations on selecting the MRM400
RCA Communications Systems - The Most Trusted Name In Radio!
Our new series of business communications products establishes a new benchmark in premium radio
products made to perform flawlessly under the most demanding commercial conditions. Cutting edge
design, professional grade materials and components, simple operation and superior assembly quality - RCA
Communications Systems has it all, including our exclusive no-nonsense, two-year "Warranty Protection
Program," one of the most comprehensive warranties in the communications industry.
To ensure maximum performance from your MRM400
Never use the Distress call unless you are in an emergency.
Do not use or place the transceiver in areas of heat, humidity and dust.
The working voltage for the transceiver is 13.8V. If the power source is 24V, please use a power converter
(24V converted to 13.8V), or the transceiver won't work.
Never directly connect to 220V AC as this will ruin the transceiver. If an abnormal odor or smoke is detected
coming from the transceiver, turn off the power immediately.
Do not transmit before connecting the antenna. This will ruin the transceiver.
After extended use, the heating panel will become hot, which is normal.
VHF Marine Two-Way Radio Instruction Manual
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radio, please be sure to carefully read this manual.