I finally got the cable made to connect my GARMIN GPS to my Kenwood THD7-A.  It appears to be working.  I am receiving packets and they are being posted on my GPS as waypoints.  I can see where this could really clutter things up, since I think they stay forever once they are posted.  I will have to play with that a bit.  I am not sure if it is properly transmitting.  I have it set to transmit every 5 minutes and I hit the beacon feature a few times at lunch, but nothing shows up on findu.com.  Could be that I am not reaching any receive station on my HT with the rubber duck?   Will play with it a bit more when I have time, with a goal of having my trip home from Florida visible on Findu.