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Re: [TowerTalk] Fwd: Peak Voltage at the tips of ants ?

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Fwd: Peak Voltage at the tips of ants ?
From: "Lux, Jim" <jim@luxfamily.com>
Date: Tue, 4 Oct 2022 09:06:57 -0700
List-post: <mailto:towertalk@contesting.com>
On 10/4/22 9:04 AM, Larry Banks via TowerTalk wrote:
Theoretically infinite.  I = 0, therefore V = infinite with any power at the tip.

In theory (!) all the power would have been radiated by the time you get to the tip - so zero voltage.


However the real case is very complex and depends on the environment and therefore the actual impedance at the tip caused by capacitive end effects, etc.   I don't believe there is a simple solution.

Larry / W1DYJ
.

On 10/4/2022 11:21, Pete Smith N4ZR wrote:
I'd be interested in this.  I think the answer is fairly straightforward, depending on how far the end is (electrically) from the feedpoint, but specifics escape me.

73, Pete N4ZR
Check out the new Reverse Beacon Network
web server at<https://reversebeacon.net>.
For spots, please use your favorite
"retail" DX cluster.

On 10/4/2022 11:07 AM, jim.thom jim.thom@telus.net wrote:
Ok, simple question.  With 1.5 kw (measured at feedpoint)  applied to the 50 ohm input  of the (full sized) dipole / yagi... what is the PEAK V at
the tips ?   Assume 1:1 swr at the feedpoint.

Same question, but ant is not full size, and may have various forms of
loading schemes used.  (Say 50-80%) of full size.


Ok, what about  a single, full size  1/4 wave vertical ?   Or a loaded
vertical ?


I can't find a straight answer anywhere.
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