Thanks Tim. I might try one of these if I can get them to send them in
single unit quantities. The one I currently use is a bowl type but
about 3 inches on the flange. I guess for a 160 ATU I should be able to
punch a new hole through the metal box and get it to work. The one
presently there was all that was left of a motorized 2-30 Mhz automatic
ATU for which I just retained the Vacuum Cap and put in my own 6 inch
flat wound AM coil. It was made in Ft. Lauderdale, FL over 40 years ago
but the beehive feed through was made from some glazed bead like
material which must soak up water like a sponge although so far has not
failed in my tower's wire cage feed tuning box at the base. I had even
considered replacing it with a small necked rum bottle glued into the
original hole. But the idea of a large porcelain replacement would look
so much better.
73,
Herb Schoenbohm, KV4FZ
On 12/17/2013 3:30 PM, Shoppa, Tim wrote:
Some of the old-school ham radio suppliers sell/stock Daburn porcelain
insulators, or you can get them direct from Daburn. e.g. Daburn 10-52:
http://www.daburn.com/10-58ceramicfeed-thruinsulators.aspx
Tim N3QE
________________________________________
From: Topband [topband-bounces@contesting.com] on behalf of Herb Schoenbohm
[herbs@vitelcom.net]
Sent: Tuesday, December 17, 2013 2:19 PM
To: topband@contesting.com
Subject: Re: Topband: Insulator problems
My 160 meter ATU uses an old military box with the original behive feed
thru insulator that is starting to crumble. I haven't been able to find
a pocelin feed thu of that size (about 3'') and the ones on e bay are
very small. Any suggestions for a source?
Herb Schoenbohm, KV4FZ
On 12/17/2013 3:09 PM, W9UCW@aol.com wrote:
When I lost my last set of monster buss bar ceramic insulators to breakage
due to a broken guy line on the tower, I replaced them with artificial
wood. I used 4 X 4's. It machines easily and works flawlessly wet or dry with
full power even in very high voltage conditions. The material is actually
made from recycled milk containers, so the factory told me. Anyone who wants
a picture, I'll send it to you.
73, Barry W9UCW
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