[Set Up]; [Aprs Operation] - Alinco DR-135T MkII Instruction Manual

8. PACKET OPERATION

[SET UP]

Please refer to the previous chapter for the set up and installation of the EJ-41U unit, TNC and PC.
See below for the connection of a GPS receiver. It requires a 3.5mm stereo plug to connect to the
DATA Terminal on the radio's front panel. See the chart for plug connections. Program the EJ-41U
by using commands from the PC in the same way as in the packet mode.
The PC can be removed from the transceiver once the EJ-41U is configured. EJ-41U will hold the
settings in memory. Repeat configuration only when it is necessary.
GPS receiver
Note 1: When the transceiver is set to the PACKET mode, a power output of +4.5V (max. 200mA) is
supplied by the transceiver, which can be used to power the GPS receiver.

[APRS Operation]

Boot up the PC and open the APRS software. Tune to the APRS system frequency.
Press FUNC key and while F icon is on press SQL key to enter to the data (APRS) mode. Repeat
the same sequence to exit.
[ ] appears on the LCD display when the unit is in data (APRS) mode
The PC monitor will display the initial menu of TNC when it enters the APRS mode.
• Set the packet speed in command mode (cmd:). I.e.
• Register your call sign
• Set the speed on GPS port
• Set the automatic transmission time separation
• Set the monitoring header option OFF
• The transceiver will start transmitting automatically when data is received from the GPS re-
ceiver. Refer to the command chart and EJ-41U instruction manual for more details.
Note: Set the transceiver and GPS receiver as far away from each other as possible to minimize pos-
sible interference.
38
3.5 mm
3-conductor plug
DATA IN
terminal
RXD (To TXD of GPS receiver)
+ B (To power of GPS receiver) Note (1)
DSUB-9 cable
cmd:HB 1200 and 9600
cmd:MY xxxxxx
cmd:GB4800
cmd:LOC E 3
cmd:LTMH OFF
Personal Computer