Alinco DR-635 - Manual (Page 54)

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Special Functions
APRS
Install the optional TNC unit EJ-50U and an external GPS receiver to operate in this mode.
APRS (Automatic Packet/Position Reporting System) is program software registered as a trade-
mark of Bob Bruninga, WB4APR. With this program, you may trace a mobile station on a map
displayed by a computer.
For tracking a mobile station, you may need a PC installed with APRS, this unit (transceiver), and
a TNC (EJ-50U). You may also need a GPS receiver, which captures signals from satellites and lets
you know where you are.
APRS will retransmit NMEA (National Marine Electronics Association) data message received from a GPS
receiver. For detailed information, please see the Internet web page regarding APRS. (www. taps. org.)
NOTE: GPS means Global Positioning System.
APRS Settings
APRS needs TNC unit EJ-50U, a GPS receiver and a PC with APRS software installed. Select an
external GPS receiver compatible with the NMEA format.
Configuration NMEA: NMEA-0183, 4800bps/Parity Bit none/Data Length 8bit/Stop Bit 1bit
Connecting the GPS
Please refer to the chapter or packet communication for EJ-50U installation and connection
to a PC.
1.
Connect a GPS receiver to CN5 connecter inside of this unit using the provided
wiring cable with some modification.
(Modification/connection of the wiring cable to the terminal is as follows)
UX1290A
DATA output (GPS receiver output)
GND (GND of GPS receiver)
Red
Black
DSUB-9 pin
GPS receiver
Notebook PC
Black Red
CN5
This unit
Ensure the tube of the wiring cable
goes through the slot on the chassis.
NOTE: • You may remove the PC after setting is completed. (What has been
programmed is stored in the TNC unit. To change settings, you must
reconnect the computer.)
• Setting the of call sign of your station, communication speed and Bea-
con transmission time interual may be changed by the TNC clone of
this unit without using a PC.