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Total 5 documents matching your query.

1. Topband: Tower insulator thickness? (score: 1): Author: Jon Zaimes AA1K <jz73@verizon.net>; Date: Sat, 02 Oct 2004 17:15:22 -0400; I'm planning on using some insulating material under BPC25 and BPC55 Rohn base plates (and around the pier pin in the center) so the towers may be series-fed on 160. Is 7/16-inch thick enough for thi; /archives//html/Topband/2004-10/msg00007.html (6,437 bytes)
2. RE: Topband: Tower insulator thickness? (score: 1): Author: "Donald Chester" <k4kyv@hotmail.com>; Date: Sun, 03 Oct 2004 01:17:57 +0000; I'm planning on using some insulating material under BPC25 and BPC55 Rohn base plates (and around the pier pin in the center) so the towers may be series-fed on 160. Is 7/16-inch thick enough for thi; /archives//html/Topband/2004-10/msg00008.html (7,306 bytes)
3. Re: Topband: Tower insulator thickness? (score: 1): Author: Earl W Cunningham <k6se@juno.com>; Date: Sat, 2 Oct 2004 19:28:24 -0700; "I'm planning on using some insulating material under BPC25 and BPC55 Rohn base plates (and around the pier pin in the center) so the towers may be series-fed on 160. Is 7/16-inch thick enough for th; /archives//html/Topband/2004-10/msg00009.html (7,668 bytes)
4. Re: Topband: Tower insulator thickness? (score: 1): Author: "Michael Tope" <W4EF@dellroy.com>; Date: Sat, 2 Oct 2004 22:20:00 -0700; Yeah, a 2 square foot x 7/16" thick fiberglass plate would be about 600pF of shunt capacitance to the concrete base. That amounts to about ~150 ohms shunt Xc at 1.8 MHz. If you cut out the center of; /archives//html/Topband/2004-10/msg00010.html (9,497 bytes)
5. Re: Topband: Tower insulator thickness? (score: 1): Author: "Tom Rauch" <W8JI@contesting.com>; Date: Sun, 3 Oct 2004 06:58:12 -0400; I tried an insulating sheet under a tower plate and regretted it. I had problems with water in the dielectric area detuning the antenna, and it eventually carbon tracked and failed. I exclusively us; /archives//html/Topband/2004-10/msg00011.html (7,693 bytes)

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