[Antennas] Chainlink fence as counterpoise...

Tue Aug 24 16:21:42 EDT 2004

Gene,
The fence idea is a good one except I would not weld galvanized metal. It gives
of a toxic gas (seems to me it was phosgen or something like that). Not to mention
welding galvanized metal makes it brittle or so I was told.
You can get rolls of metal cloth or slick wire fence that are already welded at the joints that you 
can join together at a few points with a welder in a cross pattern. It comes in a roll so you
can start in the middle and roll on out however far you want.
Granted chain link will lie down easier but that is a lot of joints to task together.
I have heard of people using chicken wire and various other fencing products as well.
73,
Jon
KD5SFA
-----Original Message-----
From: Gene Buckle <geneb at simpits.org>
Sent: Aug 24, 2004 10:31 AM
To: antennas at mailman.qth.net
Subject: [Antennas] Chainlink fence as counterpoise...
I was told during my General class that the "perfect" cointerpoise would 
be a disc of metal, some fraction of the wavelength in diameter. I don't 
recall if it was 1/2 or 1/4. I don't have my old notebook with me. :) 
I got to thinking last night that it would be possible to build something 
at least electrically similar by building a "mat" of chainlink fencing 
material that was welded at the "joints" in the fence. 
Now while I know this would be time consiming to build, would it be worth 
the effort for a multi-band vertical like those made by Hy-Gain, Cushcraft 
or SteppIR?
tnx!
g.
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