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Total 5 documents matching your query.

1. [TowerTalk] W2DU Style Balun (score: 1): Author: abowen@nettally.com (ABowenN4OO); Date: Tue, 05 Feb 2002 13:37:16 -0500; How many beads of what type material are needed to construct a choke balun, using RG303, for a balanced antenna operating 40M-10M? How many beads for the same thing operating from 80M-10M? I would li; /archives//html/Towertalk/2002-02/msg00177.html (8,515 bytes)
2. [TowerTalk] W2DU Style Balun (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Tue, 5 Feb 2002 19:56:02 -0500; It depends on how much common mode voltage you have across the balun. A minimum rule-of-thumb is to design the balun to handle 1/4 rated power in a test fixture with the ground side reversed on the; /archives//html/Towertalk/2002-02/msg00182.html (10,742 bytes)
3. [TowerTalk] W2DU Style Balun (score: 1): Author: aa4lr@arrl.net (Bill Coleman); Date: Wed, 6 Feb 2002 15:47:37 -0500; One. One. Use an FT-240-77. Wind the coax on the core. For a 50 ohm feedpoint, about 6 turns should be adequate for 40m-10m. 8-9 turns for 80m-10m. This isn't the W2DU design, but the W1JR design. Sa; /archives//html/Towertalk/2002-02/msg00215.html (7,908 bytes)
4. [TowerTalk] W2DU Style Balun (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Thu, 7 Feb 2002 07:14:38 -0500; I'm sure one 77-material core will not handle 1500 watts (or even less) in all cases, so we have to be careful using that material. 77 material is very low Q, with Q reaching unity below 160 meters.; /archives//html/Towertalk/2002-02/msg00237.html (8,415 bytes)
5. [TowerTalk] W2DU Style Balun (score: 1): Author: aa4lr@arrl.net (Bill Coleman); Date: Thu, 7 Feb 2002 11:49:12 -0500; The RG-303 is a teflon-insulated coax (and quite stiff, I might add), so you don't have to worry quite so much about center conductor migration as you with with foam-type coax. RG-142 and RG-316 are; /archives//html/Towertalk/2002-02/msg00250.html (7,908 bytes)

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