conductor plug, with three black insulating rings,
into the I/O port on the Geosat 6 APRS. This is the
top jack on the right side of the Geosat 6 APRS. Make
sure the plug is rmly seated in the jack. Open the
COM cover on the TH-D72A/E and plug the three-con-
ductor plug (two black insulating rings) into the COM
port. Again, make sure it is rmly seated. A common
problem with operation failure is not having the plugs
rmly inserted in the units, or having the connections
reversed. Double check your connections.
3. Turn on the Geosat G6 APRS and the TH-D72A/E.
Wait until the Geosat 6 APRS has acquired sufcient
satellites to establish a 3D position. A blinking GPS
icon (not iGPS) should then appear in the upper right
corner of TH-D72A/E display.
4. Set the volume at about 1/3 volume. If there is
APRS activity in your area, you should here the brief
“growl” of packet transmissions. You will hear a short
beep when you receive an APRS signal, a longer beep
when you transmit your position, and a double (high-
low) beep when you receive your position back from
a digipeater.
Now that you have a working system, you will want
to decrease your beacon rate, and change other set-
tings according to your desired operating method.
Read the APRS section of the Kenwood TH-D72A/E CD
manual. This manual provides additional information
on the functions of the various APRS controls, and
how to set them for your desired operating condi-
tions.
Troubleshooting
If you do not see a ashing “GPS” signal on the upper
right hand corner of the TH-D72A/E, or APRS stations
are not appearing in the APRS Contacts list on the
Geosat 6 APRS, then the data cable may not be fully
APRS functions
AvMap - 25
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