[time-nuts] Best location for a GPS antenna...?

[Ulrich Bangert]

Stefan,

my mushroom type of gps antenna is mounted on a metallic cantilever arm abt.
0.6 m aside a pole that extends 1 m above the height of the gps antenna.
Then a 2 m long vertical amateur radio antenna is mounted on top of the
pole. The pole is exactly in the east of the gps antenna. I attach a
visibility plot. Everything else with exception of exactly east is the
effect of trees around the house being higher than antenna height. While
this arrangement is not what you suggest in terms of lightning protection it
shows that the pole itself has not a big impact on gps reception.

Best regards
Ulrich Bangert 

> -----Ursprungliche Nachricht-----
> Von: time-nuts-bounces at febo.com 
> [mailto:time-nuts-bounces at febo.com] Im Auftrag von Heinzmann, 
> Stefan (ALC NetworX GmbH)
> Gesendet: Donnerstag, 12. April 2012 10:10
> An: Discussion of precise time and frequency measurement
> Betreff: Re: [time-nuts] Best location for a GPS antenna...?
> 
> 
> What about mounting the antenna on the side of the metal 
> pole, with the top of the pole extending a foot or more above 
> the antenna?
> 
> The idea is to have the lightning bolt strike the pole, but 
> not the antenna. The cable shield would need to be insulated 
> from the pole, but grounded on entry to the building.
> 
> Would the pole disturb the GPS signal to any noticeable extent?
> 
> Cheers
> Stefan
> 
> 
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