Alinco DR-635 User Manual download pdf (Page 54)

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.

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Alinco DR-635 User Manual Page 54