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bakerocb
Joined: 15 Jan 2006
Posts: 727
Location: FAIRFAX VA
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 Posted: Thu Jan 26, 2006 4:35 am Post subject: GPS antennas |
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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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GrummanDude
Joined: 15 Jan 2006
Posts: 926
Location: Auburn, CA
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| Posted: Thu Jan 26, 2006 8:31 pm Post subject: GPS antennas |
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In a message dated 1/26/06 4:36:57 AM, bakerocb(at)cox.net writes:
| Quote: | This I did, ensuring that the antenna had a view clear of any metal
obstruction in the entire upper hemisphere. It has worked great.
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I put mine on the glare shield, near the windshield. No problems. Short
cord. No holes in the plane. No drag.
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_________________
Gary
AuCountry Aviation
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