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[Towertalk] Ref: Fiberglass Mast

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Subject: [Towertalk] Ref: Fiberglass Mast
From: (Jon Ogden)
Date: Fri, 06 Sep 2002 10:32:37 -0500
on 9/6/02 7:48 AM, hasan schiers at wrote:

> The typical problem is vertically polarized yagis on a vertical mast. This
> is almost always destructive, even with non-conductive masts if the feedline
> is run up the non-conductive mast, along the boom and to the feed, because
> the feedline acts just like the mast. The best approach is to use a cross
> boom. If you don't have another antenna to put on the opposite side of the
> cross boom, use a counter weight. Done this way the mast and feedline are
> always orthogonal to the plane of the elements.


Of course, if the yagis are short enough, you can always mount them from the
rear behind the driven element.



Jon Ogden
NA9D (ex: KE9NA)

Life Member: ARRL, NRA
Member:  AMSAT, DXCC

"A life lived in fear is a life half lived."

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