You can get inexpensive conductive foam from Amazon.
On 4/4/2012 5:53 AM, 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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