Message-ID: <376BA41E.EC43D5CB@regandesigns.com>
Date: Sat, 19 Jun 1999 07:07:27 -0700
From: Brent Regan <brent@regandesigns.com>
To: lancair.list@olsusa.com
Subject: Re: GPS antenna placement
References: <19990619045642.AAA24327@truman.olsusa.com>
Mime-Version: 1.0

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> Hi my name is Robert , and agroup of us are building
> a IV-P.  We have
> a question that we hope someone out there can answer. We have installed
> the com 1 antenna in the fin but we have been told that we have to have
> at least 3 feet between the com antenna and the G.P.S antennas (we are
> installing 2), but to do this the G.P.S. antennas will be under the
> carbon fibre top skin of the fuselage. Any help would be appreciated.
>
> We are living in Yarrawonga , Victoria , Australia and this list has
> been a source of great information.
>
> Regards, Robert Wallace
> Yarrawonga Lancair Syndicate

Yarrawonga Lancair Syndicate? What a cool name! Can I join? You guys have
T-shirts? If so, I MUST have one.

Seriously though, the GPS antenna works just fine when placed about 20-30 cm
forward of the horizontal stabilizers leading edge. What I did on one airplane was
to eliminate the large flexible hose for the tail vent and extend the duct all the
way back to the H- stab. The U shaped duct transitions into a flat plate as it
moves aft. By mounting the GPS antenna to a flat aluminum plate, cutting a hole in
the floor of the duct and installing nut plates in the duct, you can install the
GPS antenna from inside the tail cone. Simple and clean. Worked well too.

Cheers
Brent Regan

PS. If you are still scratching your head after my explanation, sent me an e mail
and I'll forward a sketch.
BR

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