In article , VHFRadioBuff
says...

The usual scheme is that the GPS receiver feeds its data to the
TNC (in my case, a Kantronics KPC-3+), and the TNC interfaces with the
radio involved to move the data. APRS, as its name implies, is mainly
for position reporting.

But if I'm using a Palm Pilot, how does the Palm Pilot interface with the TNC?
Do you need a splitter so both can plug into the TNC? Can you recommend a GPS
unit that will do what I need? It's going to be a mobile setup, but doesn't
need to be the top of the line.

You need a serial (RS232) port on the Palm Pilot. If it lacks
such, or cannot be adapted to have one, you're pretty much SOL. In that
case, you would probably need to look at using a laptop computer.

In short: You have a serial connection from the GPS device to the
TNC. You have a second one from the TNC to the computer. The KPC-3+ can
accomodate both, as it has two hardware serial ports.

Choice of GPS unit is, again, a very individual and subjective
thing. I would suggest visiting http://www.gpscentral.ca -- they have a
wide variety of units from all manufacturers, and you get to take
advantage of the good exchange rate between US Dollars and Canadian. I
bought my OEM module from them.

--
Dr. Anton Squeegee, Director, Dutch Surrealist Plumbing Institute
(Known to some as Bruce Lane, KC7GR)
kyrrin a/t bluefeathertech d-o=t c&o&m
"Quando Omni Flunkus Moritati" (Red Green)