[time-nuts] Improving performance of a GPS antenna...?

[Brooke Clarke]

Hi Mike:

I used military surplus radar absorbing material to stop reflections on a satellite antenna by applying it to the rain 
gutter, see:
http://www.prc68.com/I/Images/SB_angw.jpg

A sheet of this stuff about 4 x 6 feet weighed maybe 40 pounds.  An easy way to confirm it works is to use it to block a 
receiver antenna and see how far the signal goes down.

Have Fun,

Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/Brooke4Congress.html


Michael Baker wrote:
> Hello, Time-Nutters--
>
> I saw a rather expensive GPS antenna made by one of the
> big-name GPS survey equipment mfgrs that was mounted
> on top of a 12 or 15 inch diameter disc about 3/4 inch thick.
>
> Turns out that the disc is made of some sort of RF absorbent
> foam covered by a weather-proofing coating of some sort.
>
> If one were to try to home-brew something like this, where
> would a small piece of the RF absorbent material be obtained
> without having to spend too much $$ for this experiment?
>
> Thanks for any feedback on this!!
>
> Mike Baker
> WA4HFR
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