OOOPs Sorry....Jack.
GPS2 plugs into computer or TNC.
In my truck I have a Kenwood THD700
It has full APRS & TNC built in. Just plug in a GPS and you're done.
Plus it is a dual bander so you can still use the radio while pinging your position
I have built 4 of these and have the parts for 2 more.
http://www.kd5om.com/tripmateold.htmThe battery cover holds a 4 AA cell pack. Remove it and there is plenty of room to install a tiny track 3 kit. You then run a 12v cord & audio & PTT cord to radio. Viola! Self contained unit!
You can buy tripmates
used on ebay for 5 bucks. Hell I'll give you one if you want to build a tracker. Makes a great free Lojack