The Nylon rope is an insulator until gets wet, collects, decays and collects
more stuff with UV exposure, etc. Assuming your fan dipole is a half-wave
on all bands -- and it should be, keep in mind that RF voltage is maximum at
each end.
I would consider the common dark green Budwig insulators that have a decent
ribbed dirt path. They're stealthy enough.
Paul, W9AC
-----Original Message-----
From: TowerTalk <towertalk-bounces@contesting.com> On Behalf Of Kevin
Zembower via TowerTalk
Sent: Friday, June 26, 2020 2:07 PM
To: TowerTalk@contesting.com
Subject: [TowerTalk] Do I need an insulator on the ends of my dipole?
Hello,
I'm replacing my 40/20/10M fan dipole with an even more stealthy one, using
small gauge insulated stranded copper-clad steel. The suspension goes from a
post in my back yard, to a mast on the peak of my roof, to a tree in the
front of the yard. At both ends, there's at least 10 feet of nylon cord.
Currently, there's a ceramic insulator at each end of the dipole, between
the dipole wire and the nylon cord. Do I need any kind of insulator? Isn't
the nylon cord an insulator? I can work out the mechanical stress with
thimble eyes. Why do I need an insulator?
I only run 100W maximum with my system max.
Thanks for your advice and guidance.
-Kevin
KC3KZ
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