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[Antennaware] homemade coil

Subject: [Antennaware] homemade coil
From: Jan Ditzian <>
Date: Tue, 13 Mar 2007 19:53:56 -0500
List-post: <>
I began work on shunt loading my tower for 80 and/or 160.  The initial 
reading on my MFJ 259 showed that the antenna was too short, and it 
needed a coil in series to get X=0.  I went to a plumbing shop and found 
solid #12 insulated wire, wrapped it around some 4-inch diameter PVC 
pipe, and lo and behold, I am in the ballpark.

My question is: I intend to re-wrap the wire so it is neat, but what 
kind of problems should I expect from this kluge coil?  I tried moving 
the turns around, with the ends fixed in place, and there is almost no 
change in X on the 259.  Am I looking at low efficiency, potential 
arcing, other problems associated with such a cavalier method of 
creating a coil?

Jan, KX2A
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