Ron,
Normally a GPS antenna does not need a ground plane. It's part of the
antenna. I'm guessing they are calling it a ground plane when it's just
shielding RF from the transponder or com radio. I installed the EchoUAT in
my plane which uses a GPS with integral antenna. I just mounted it on a
piece of aluminum the width of the GPS and bent in an L shape and bolted to
the top of the back bulkhead. I'm getting a good GPS signal in my plane in
the basement.....
Bill Henderson
N51EU
Europa Monowheel Classic
Loganville, GA
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of rparigoris
Sent: Thursday, September 24, 2020 2:24 PM
Subject: Europa-List: ADS-B GPS / WAAS antenna install
Hi Group We have a Garmin GA35 GPS / WAAS antenna that needs installing for
ADS-B Garmin GDL-82. We want to install it about 2 feet aft of doors under
ceiling. Has anyone put a GPS antenna there? Any pics? What size and shape
ground plane did you use? Garmin is calling for a ground plane to extend
7.5" from the edge of antenna all around which will make it an approx. 19"
circle. Thx. Ron P.
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