4 GPS
TM-D710A/E
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 (
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
5
3
2
GND
RXD
TXD
Viewed from soldering side
(DB-9 connector (Male))
