Jim Brown has a real good article with lots of data re end-feeding a
vertical dipole. The antenna works really well.
http://www.k9yc.com/VerticalDipole.pdf
-------------------
Wes Attaway (N5WA)
(318) 393-3289 - Shreveport, LA
Computer/Cellphone Forensics
AttawayForensics.com
-------------------
-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of
charlie carroll
Sent: Saturday, February 08, 2020 10:57 AM
To: towertalk@contesting.com
Subject: [TowerTalk] center insulator material
I need some help selecting some type of material to build some custom
center insulators. I have what approaches zero experience in this area.
The insulators will be used to support near vertical dipoles for
160-meters. The antennas will be installed in the Caribbean and will
need high resistance to UV and salt water. I also want to install an
SO-239 and home made common-mode choke on the insulator. It would be
preferable that I be able to fabricate the final shape with common home
workshop tools and not have to rely on a machine shop. The insulators
won't be under a lot of tension because of their orientation, but low
weight material would be preferred. The insulators may be subject to
some winds containing sand particles.
I'm looking for some help selecting some appropriate material (UHMW,
Ultem, UV augmented HDPE, ...) that I can investigate further.
thanks
73 charlie, k1xx
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