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Re: Europa-List: GPS antennae siting

Subject: Re: Europa-List: GPS antennae siting
From: William Harrison <willie.harrison@tinyonline.co.uk>
Date: Tue, 5 Feb 2008 22:42:59

Thanks, David and everyone. Presumably, as well as avoiding the  
shielding effect of the crew, antenna height relative to the engine  
and the metalwork in the panel itself would help comms with  
satellites close to the horizon.

On our last French trip in October, (Paddy Clarke, Alasdair Milne,  
myself) we all lost GPS signal at various times as well. In addition,  
my "Old Faithful" 295 died peacefully (so peacefully that there was  
only a frozen display with no explicit warning that it was  
meaningless - charming).

Cheers

Willie


On 5 Feb 2008, at 21:57, David Joyce wrote:

> <davidjoyce@doctors.org.uk>
>
> Willie, It sounds from your replies that top of instrument panel  
> gives OK
> results, but I wonder whether  the fuselage top between your doors  
> may give
> even better results, as I can imagine that pilot and passenger will  
> blank
> some satellites for a panel aerial in some situations. Everyone I  
> have flown
> with on the  trips I have done in Italy have lost GPS signal at  
> some point,
> but I never did. I had tended to put this down to superior  
> performance of my
> Garmin 295 as opposed to most people's Skymaps, but it may be  
> because I have
> my aerial above head level. The cable supplied by Garmin and by Blue
> Mountain is plenty long enough to reach there, and otherwise gets  
> coiled up
> behind the panel where it could possibly be subject to electronic
> interference. Regards, David
>
>



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