[TowerTalk] Do I need an insulator on the ends of my dipole?

[Keith Dutson]

I use Buckmaster OCF multi-band dipoles.  They employ dark green insulators
on each end.  I use tarred nylon "trot line" with 440 pound tensile strength
to hang the ends to supporting trees-structures.

73, Keith NM5G

-----Original Message-----
From: TowerTalk <towertalk-bounces at contesting.com> On Behalf Of
john at kk9a.com
Sent: Friday, June 26, 2020 10:34 PM
To: towertalk at contesting.com
Subject: Re: [TowerTalk] Do I need an insulator on the ends of my dipole?

I always use an insulator in my dipoles. One might say what is the harm of
using an inexpensive insulator however it appears that you are trying to be
as stealth as possible so I am guessing that you just do not want to see
one. I am not sure what voltage is on the dipole ends, maybe 750 peak?  The
trouble with nylon rope is that it holds moisture and minerals which are
conductive.  Perhaps there is a heavy duty fishing line or maybe even
weedwacker string that could be used as an insulated support line.

John KK9A


Kevin Zembower KC3KZ
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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