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GPS antennas

 
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Dick Sipp



Joined: 11 Jan 2006
Posts: 215
Location: Hope, MI

PostPosted: Wed Jan 25, 2006 7:51 pm    Post subject: GPS antennas Reply with quote

I know many folks have mounted their GPS antennas under fiberglass components like cowls. Most have reported no problem with reception.

Has anyone with this configuration had a problem they could identify? Any reasons not to go this route? Any other considerations other than insuring unrestricted view of the sky and no metallic materials in the fiberglass.?

Thanks

Dick Sipp


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aadamson(at)highrf.com
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PostPosted: Wed Jan 25, 2006 8:07 pm    Post subject: GPS antennas Reply with quote

Also, *do not* put it under carbon fiber... Might as well be aluminum as
it's conductive and is a great faraday shield Smile

Alan

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bakerocb



Joined: 15 Jan 2006
Posts: 727
Location: FAIRFAX VA

PostPosted: Thu Jan 26, 2006 4:35 am    Post subject: GPS antennas Reply with quote

Responding to an AeroElectric-List message previously posted by: "Richard
Sipp" <rsipp(at)earthlink.net>

1/26/2006

Hello Dick, My Garmin GNS 430 came with an antenna and installation
instructions for the antenna that called for a large metal ground plane
under the antenna. I called the Garmin tech people and protested.

The technician said there was no real need for such a ground plane, but
suggested that if I was going to put the antenna under a fiberglass upper
cowling area near the engine that I mount it on a small metal shelf to help
screen the antenna from electromagnetic junk that might be radiated from
below.

This I did, ensuring that the antenna had a view clear of any metal
obstruction in the entire upper hemisphere. It has worked great.

OC

<<I know many folks have mounted their GPS antennas under fiberglass
components like
cowls. Most have reported no problem with reception.

Has anyone with this configuration had a problem they could identify? Any
reasons
not to go this route? Any other considerations other than insuring
unrestricted
view of the sky and no metallic materials in the fiberglass.? Thanks Dick
Sipp>>


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