Try a long neck beer bottle standing on a 2X6 with shallow doorknob hole
drilled to hold bottle. If this is too unstable or the weight breaks the
bottle, try a glass building block covered with a fiberglass roof shingle.
Keith WD5DXL
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of Dan Levin
Sent: Friday, July 02, 2004 11:08 AM
To: towertalk@contesting.com
Subject: [TowerTalk] Vertical Base Insulators
I'm planning to install a Channel Master pushup mast (with stinger on top)
as a vertical antenna for 160 meters. The mast is steel, and about 2.5" in
diameter at the base. It will be guyed. I have two questions:
1) What is the conventional wisdom about insulating the base of such a
vertical from ground? How far from ground does the bottom of the mast have
to be? What materials are best to use as the insulator? What materials
should I avoid?
2) Does anyone have a specific proposal for a base insulator for such
an antenna? I'm especially interested in anyone who is using such a mast as
a vertical, and has real experience with the mechanical and electrical
issues of all of this.
My current plan is to use a 1" piece of Delrin with a thin steel plate on
top of it (to spread the weight/pressure) as the base insulator. What I
don't know is whether one inch is far enough from "ground".
Thanks!
***dan, K6IF
Don't forget the California QSO Party, coming up the first weekend of
October!
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
questions and ask for Sherman, W2FLA.
_______________________________________________
TowerTalk mailing list
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http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
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