Anyone make a "single box" APRS solution?
 

Hi,

Does anyone make a box that is a transmitter, modem (TNC), and GPS
receiver? I'd like to be able to drop a single box in a car or boat
that I want to track. I would attach an antenna and a power-supply and
that would be it.

Does it exist?

If not, are there any websites with suggestions on how to set up a
simple APRS transmitter? I would think a bunch of people have spent
some time on this already.

Thanks!
John