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Total 85 documents matching your query.

81. Re: [TowerTalk] Choke on feed point of dipole (score: 1)
Author: Tom Hellem <tom.hellem@gmail.com>
Date: Mon, 12 Jan 2026 17:15:50 -0700
JohnI'm doing exactly that. But The horizontal portion of my feedline as it leads away from the vertical dipole is not exactly horizontal, it drops down at maybe a 30 degree angle for about 8' , then
/archives//html/Towertalk/2026-01/msg00025.html (10,473 bytes)

82. Re: [TowerTalk] Choke on feed point of dipole (score: 1)
Author: Tom Hellem <tom.hellem@gmail.com>
Date: Mon, 12 Jan 2026 22:16:34 -0700
My hat is off to all of you fine gentlemen who contributed to this discussion. You have helped me see the light. I think the reasonable conclusion is that a center fed vertical dipole is a very diffi
/archives//html/Towertalk/2026-01/msg00030.html (10,082 bytes)

83. Re: [TowerTalk] Choke on feed point of dipole (score: 1)
Author: Tom Hellem <tom.hellem@gmail.com>
Date: Tue, 13 Jan 2026 11:59:30 -0700
JeffAssuming your comments pertain to a wire dipole. Mine is made of aluminum tubing, a repurposed DE from a 20 meter yagi, modified somewhat to put bigger diameter tubing at the bottom half. Intenti
/archives//html/Towertalk/2026-01/msg00038.html (12,959 bytes)

84. [TowerTalk] Antenna Analyzer Question (score: 1)
Author: Tom Hellem <tom.hellem@gmail.com>
Date: Tue, 10 Feb 2026 07:37:48 -0700
In order to make measurements of impedance, etc on an antenna with any of the various analyzers on the market, one must connect the analyzer to the antenna with some length of coax. And unless the an
/archives//html/Towertalk/2026-02/msg00009.html (7,705 bytes)

85. Re: [TowerTalk] Antenna Analyzer Question (score: 1)
Author: Tom Hellem <tom.hellem@gmail.com>
Date: Wed, 11 Feb 2026 16:55:19 -0700
Man, have I learned a lot about analyzers vs. vna's since yesterday. All of you folks in this group who have responded have given me a wealth of information. Yes it seems few or none of the typical a
/archives//html/Towertalk/2026-02/msg00022.html (13,739 bytes)

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