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

[jmfranke]

Of course the answer depends on what you mean by noticeable extent. I am 
assuming the mast is less than 3' in diameter and the GPS antenna is at 
least a foot away from the mast. I would say for position error larger than 
three feet, no and for timing errors larger than 5 nanoseconds, no. This of 
course assumes the receiver is capable of that accuracy level. If you try to 
go below that, other items in your immediate neighborhood would need to be 
examined.

John  WA4WDL

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From: "Randy D. Hunt" <randy_hunt960 at yahoo.com>
Sent: Thursday, April 12, 2012 2:56 PM
To: "Discussion of precise time and frequency measurement" 
<time-nuts at febo.com>
Subject: Re: [time-nuts] Best location for a GPS antenna...?

> On 4/12/2012 1:10 AM, Heinzmann, Stefan (ALC NetworX GmbH) wrote:
>> 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
>>