Hello,
I am currently finishing with the APRS Tracker project. I managed to tune the output power to about 3W. I tested the device when I returned home from eastern Slovakia. The antenna hurts the magnet on the roof.
Route:
http://aprs.fi/#!mt=roadmap&z=9&ts=1405036800&te=1405123200&call=a%2FOM4AOZ
APRS trackera photography:
