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81. Re: [TowerTalk] Feedline (choke) question (score: 1)
Author: Brian Beezley <k6sti@att.net>
Date: Sun, 28 Sep 2025 02:07:42 -0700
https://i.postimg.cc/8k2w1vDW/ant.png This models a 20-meter dipole 20' above ground with a common-mode current path. The vertical wire, which is connected to one side of the feedpoint, represents th
/archives//html/Towertalk/2025-09/msg00102.html (10,664 bytes)

82. Re: [TowerTalk] Feedline (choke) question (score: 1)
Author: Brian Beezley <k6sti@att.net>
Date: Sun, 28 Sep 2025 02:29:17 -0700
"N6LF has published a lot of great work, really scientific studies of ground systems for antennas. His website is a great resource." Jim, Rudy's website is going away because Typepad is folding. He d
/archives//html/Towertalk/2025-09/msg00103.html (10,171 bytes)

83. Re: [TowerTalk] Feedline (choke) question (score: 1)
Author: Brian Beezley <k6sti@att.net>
Date: Tue, 30 Sep 2025 03:32:58 -0700
"Reference my early example of a portable rig with no connection to ground anywhere." Dave, I'm curious what you made of my antenna model that showed common-mode current flowing to ground from the co
/archives//html/Towertalk/2025-09/msg00120.html (9,854 bytes)

84. Re: [TowerTalk] Feedline (choke) question (score: 1)
Author: Brian Beezley <k6sti@att.net>
Date: Tue, 30 Sep 2025 10:17:31 -0700
"I already answered that." Dave, the antenna model I posted contradicts this assertion you made: "I already did with the example of a floating portable setup. Current requires an E-field to push it.
/archives//html/Towertalk/2025-09/msg00123.html (10,318 bytes)

85. Re: [TowerTalk] Feedline (choke) question (score: 1)
Author: Brian Beezley <k6sti@att.net>
Date: Tue, 30 Sep 2025 10:51:18 -0700
"RF isn't DC ... it doesn't just flow to the earth and disappear. It flows back and forth every half cycle." That brought to mind the AC/DC power rivalry of the late 1800s. George Westinghouse, with
/archives//html/Towertalk/2025-09/msg00124.html (10,482 bytes)

86. Re: [TowerTalk] Feedline (choke) question (score: 1)
Author: Brian Beezley <k6sti@att.net>
Date: Tue, 30 Sep 2025 13:29:17 -0700
"It just shows current going back and forth between the earth and the coax." Dave, I don't know what you mean by back and forth. In my model, the ground wire simply has current. It is about three tim
/archives//html/Towertalk/2025-09/msg00126.html (10,509 bytes)

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