User's Manual Part 2

Special Functions

APRS

Install an optional TNC unit EJ-50U and an external GPS receiver to operate this function.

APRS (Automatic Packet/Position Reporting System) is a program software registered as a trade-

mark of Bob Bruninga, WB4APR. With this program, you may trace a mobile station on the map in

a computer.

For tracing a mobile station, you may need a PC installed with APRS, this unit (transceiver), TNC

(EJ-50U). You may also need a GPS receiver, which catches a signal from a satellite and lets you

know where you are.

APRS will reconstruct NMEA (National Marine Electronics Association) data message received

from a GPS receiver. For detailed information, please see the Internet web page regarding APRS.

NOTE: GPS means Global Positioning System.

APRS Setting

APRS needs a TNC unit EJ-41U, a GPS receiver and a PC installed with APRS software. Select an

external GPS receiver compatible with NMEA system.

Configuration NMEA: NMEA-0183, 4800bps/Parity Bit none/Data Length 8bit/Stop Bit 1bit

For connection

Please refer to the chapter of packet communication for EJ-50U installation and connection

with 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 finished.(What has been pro-

grammed is stored in the TNC unit. To change settings, reconnect it

before setting.)

• Setting of call sign of your station, communication speed and Beacon

transmission time separation may be changed by the TNC clone of this

unit without using a PC.