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11 MISCELLANEOUS TOPICS
TM-D710A/E CONTENTS 85
11.3 Schematic Diagram of the Optional
PG-5J Interface Kit
Figure 11-4 PG-5J Schematic Diagram
11.4 AvMap (written by Don Arnold, W6GPS)
The TM-D710A/E uses the NMEA 0183 standard at 4800 and 9600 baud rates to communicate
with the GPS unit. The transceiver has three formats for interfacing to GPS units: NMEA,
Magellan and the new Kenwood format. A GPS system with a serial interface will connect to the
TM-D710A/E but if your GPS supports bi-directional communication, it is possible to have APRS
callsigns and icons appear on the GPS screen. Of all the name brand GPS units, the AvMap G5
smoothly interfaces with the Kenwood TM-D710A/E TNC better than any other with less
adaptation and more features specific to APRS and the TM-D710A/E by taking advantage of the
Kenwood APRS sentence and providing a Kenwood interface cable for truly Plug and Play
operations.
Note: The baud rates refer to serial communication between transceiver and GPS and not to the AX.25 Packet
communication between transceivers.
AvMap G5 has many of the normal Personal Navigator data fields that you would find in most
world brand GPS units, but AvMap developers have integrated the Kenwood sentence format to
provide you a Tactical Mode. No other standalone GPS system has this exclusive Kenwood/
AvMap feature. If you are involved in a search and rescue scenario, you can assign one of your
APRS assets (callsigns) the target designation for Tactical Mode. This designated callsign on
each position report is processed by AvMap for easy viewing and tracking.
If you are using the TM-D710A/E with the AvMap, in Tactical mode, you will get an additional five
data fields that can be displayed on your AvMap:
RED
10 V
BLK
+B
GND
DC IN
DATA terminal
Panel jack
1 PR1
8 SQC
6 SQC
4 PR9
2 GND
7 GND
5 PR1
1 PKD
3 PKS
7 TXD
6 PKD
5 PKS
4 RXD
3 GND
2 10V
SIR
J1
SQC PKD PKS
PR1
PR1
D2 DSA3A1
PR9
R1
0
J2
D1
1
2
3
C1
VCC
GND
VoUT
C2
C3
C4
47uF 25 V
47uF 25 V
+
+
0.01uF
0.01uF
22WR-10D
IC1
BQJOCCOT