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4 GPS
TM-D710A/E CONTENTS 15
4.2 GPS Receivers
Figure 4-2 GPS Receivers
4.2.1 Garmin GPS18PC
The GPS18PC is a GPS module receiver that interfaces via a 9-pin D-SUB RS-232C serial port.
Refer to the wiring example using an accessory cable (2.5mm 3-conductor plug) that comes with
the TM-D710A/E. Power is sourced from the 12VDC supplied from a vehicle cigarette lighter
socket. Because there is no screen, you cannot use the Waypoint function.
Figure 4-3 Garmin GPS18PC
4.2.2 AvMap G5
The AvMap G5 comes with a Kenwood-ready cable and exclusive APRS interface built right into
the panel. You can watch APRS activity on the AvMap G5 screen without having a PC. It can be
also configured to navigate to your favorite APRS station.
4.2.3 Other GPS Receivers
The GPS receiver used must be based on NMEA 0183 format (http://www.nmea.org).
The following RS-232C singal levels are allowed for using the TM-D710A/E and RC-D710.
Low level: - 15 V to 0.5 V, High level: +3.0 V to +15 V. You cannot use a GPS receiver with
USB-type connector.
4.2.4 Settings for Geodetic Survey System
For APRS, always configure the WGS-84 Geodetic Survey System for your GPS receiver.
GPS without Maps (GPS18PC or similar)
To GPS jack
Weather Station
GPS with Maps (AvMap G5)
Shield
Red
White
532
GND
RXD
TXD
Viewed from soldering side
(DB-9 connector (Male))