I've spent as much time as anyone worrying over guy wire resonances.
The ARRL anti-resonant sections are a myth. They don't work because
the guy wires are in the antenna near field and currents are NOT
evenly induced across their length by a distant (far field) point
source, apparently an unintended assumption in the ARRL figures. They
further don't work due to capacitive feed across breakup insulators
that changes the length in a non-predicted way similar to end-effect
on dipoles.
I'm not sure what construct you mean by transmission line sections.
If you can afford it (do the comparative cost math on insulators,
grips, etc) get Phillystran. Or maybe do the first 33 feet of every
guy off the tower in Phillystran.
Sleep at night.
73, Guy.
----- Original Message -----
From: "tongaloa" <tongaloa@alltel.net>
To: <towertalk@contesting.com>
Sent: Monday, June 24, 2002 2:13 PM
Subject: [Towertalk] Guy wire resonance. Break it up or use stubs?
> What's the word these days on guy wires.
> Break 'em up with insulators or make up transmission line sections
to get
> away from
> resonance near operating freqs?
> Thanks,
> -bob
>
>
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