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201. Re: [TowerTalk] Feedline (choke) question (score: 1)
Author: David Gilbert <ab7echo@gmail.com>
Date: Mon, 29 Sep 2025 15:40:49 -0700
The original postulation from Brian, K6STI, was that connecting the shield of the coax to ground at a point where any common mode current might exist would shunt it to ground. I've claimed that's a f
/archives//html/Towertalk/2025-09/msg00116.html (17,297 bytes)

202. Re: [TowerTalk] Feedline (choke) question (score: 1)
Author: David Gilbert <ab7echo@gmail.com>
Date: Tue, 30 Sep 2025 02:04:55 -0700
What you are describing is totally different than the original claim (and the subsequent discussion) that the earth is an RF sink.  What was the purpose in doing that? Yes, you can make the earth act
/archives//html/Towertalk/2025-09/msg00119.html (24,390 bytes)

203. Re: [TowerTalk] Feedline (choke) question (score: 1)
Author: David Gilbert <ab7echo@gmail.com>
Date: Tue, 30 Sep 2025 09:43:15 -0700
I already answered that.  RF isn't DC ... it doesn't just flow to the earth and disappear.  It flows back and forth every half cycle. Whatever current flow may occur between the coax and ground is st
/archives//html/Towertalk/2025-09/msg00122.html (11,079 bytes)

204. Re: [TowerTalk] Feedline (choke) question (score: 1)
Author: David Gilbert <ab7echo@gmail.com>
Date: Tue, 30 Sep 2025 12:21:02 -0700
Brian, I didn't say there shouldn't be any current.  I said there isn't any current that just goes to ground and stays there ... as in bleeding it off.  EZNEC doesn't show that either.  It just shows
/archives//html/Towertalk/2025-09/msg00125.html (11,338 bytes)

205. Re: [TowerTalk] Feedline (choke) question (score: 1)
Author: David Gilbert <ab7echo@gmail.com>
Date: Tue, 30 Sep 2025 13:37:33 -0700
Possibly I missed it, but I don't see your EZNEC model.  I only saw the diagram.  Can you send me the model? Dave   AB7E Dave, I don't know what you mean by back and forth. In my model, the ground wi
/archives//html/Towertalk/2025-09/msg00127.html (11,350 bytes)

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