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[TowerTalk] re: tower base insulators

Subject: [TowerTalk] re: tower base insulators
From: Jon Zaimes AA1K <>
Date: Fri, 27 Aug 2004 08:13:22 -0400
List-post: <>
I homebrewed an insulated base using three large ceramic insulators obtained 
for $20 from a local scrap yard. They likely came off some power company 
transformer. Each is about 6-8 inches diameter and about 8-10 inches long. One 
of them would have been sufficient to hold my 100-ft. Rohn 25 that is the 
160-meter vertical, but I used three to spread the load out. (I tested a spare 
one, which had a crack in it, by driving my 4000-pound Jeep over it a few 
times, without damage.) The insulators are bolted to a Rohn flat base on the 
top side, and to another flat steel plate on the bottom -- which sits on a pier 
pin in the concrete base.

Here's a photo on my web site. It's the last photo on this page, click to 

73/Jon AA1K


See:  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.

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