Icom M504 User Manual

©2011 Icom America Inc Page 1
Icom America, Inc.
12421 Willows Rd NE
Kirkland, WA 98034
Connecting a GPS to Your Icom M504/M504A radio
The back panel of your M504/A radio has 2 wires that you can use to connect to your
GPS.
M504 Connections
Radio
GPS
NMEA in + (red wire) →
NMEA / Data out
NMEA in

(red wire shield) →
NMEA / Data ground
NMEA out + (white wire) →
NMEA / Data in
NMEA out  (white wire shield)
→
NMEA / Data ground
GPS Example Connections
You will need to solder the 2 wires and their shields to the NMEA wires from your
GPS. For more specific information, consult the individual instruction manual from
the GPS manufacturer.
Garmin GPS

Icom M504 Specifications

General

Brand	Icom
Model	M504
Category	Transceiver
Language	English

Summary

Garmin GPS Connection

GPS Example Connections

Details on soldering wires and connecting GPS to the Icom radio, with a specific example for Garmin.

Raymarine GPS Connection

Standard Horizon GPS Connection

Troubleshooting GPS Connection