Copyright © 2015 RCA Communications Systems
MRM400
TM
VHF Marine Two-Way Radio Instruction Manual
10
ANTENNA CONNECTION
Be sure to connect an antenna before
transmitting. Select the antenna with the
relative frequency and connect to the ANT
antenna connector. Use the antenna and
low loss concentric with the same natural
impedance 50
Ω
. (See page 4 for more
information.)
■
Transmitting without an antenna may
damage the transceiver.
Antenna Connector
Feeder Connector
To The Antenna
CONNECTIONS
After connecting the DC power cable, GPS
receiver lead and external speaker lead, cover
the connector and leads with an adhesive
tape as below, to prevent water entering the
transceiver.
■
External speaker lead
Wiring details for an external speaker below.
Rubber Vulcanizing Tape
Blue Speaker
Speaker
Gray
Electrical Tape
Gray: Speaker