"Newps" wrote in message
. ..
You most likely don't need an external antenna. If you do it doesn't
need to attach to anything. Just run the cable up to the front of the
windshield and set it there. If it wants to move push a small portion
into the junction of the top of the panel and the windshield just
forward of the pilots door.

Thanks for the suggestio Newps . The reason I am buying a Garmin is because
I had a lttle Magellan Map 330 which worked fine when I was flying a
Warrior, but on about 3 occaisions flying a Cessna the signal dropped out.
the consensus of advice I recieved was that the high wing blocked out the
signal, and unfortunately the Magellan units dont have external antenna
facility.
terry