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Old November 24th 06, 05:02 PM posted to rec.aviation.soaring
MaD
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Posts: 46
Default GPS Antenna Location


Kevin Neave schrieb:

Hi Folks,

Does anyone out there know if there are any adverse
effects of mounting two or more GPS antennae in close
proximity?

I'd like to fit two (maybe 3 !!! ) antennae (Colibri
/ EW type 'Radomes') on the instrument panel coaming
of my Discus. Is this likely to cause any problems
in acquiring or tracking the GPS position?

Thanks

Kevin


Most providers of GPS equippment recommend a distance between antennas
of at least 25cm. All nonsense.

A friend of mine experienced interference at distances greater than 1
meter: The FLARM antenna fell off from where he had taped it and was
dangling by the feet. Over the next few minutes first the LX5000, then
the first LX20 with antenna on the old camera mount and then the second
(!) LX20 located in front of the main spar lost satellite reception.

On the other hand I have seen setups with two antennas stuck together
under the panel working for years with no problem.

There's only one way to go: You have to try it and if it works you're
lucky and else you have to move one of the antennas. As has been
mentioned moving an inch or two can make the difference.

Regards
Marcel