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Re: [TowerTalk] Tips for Modelling swaged antenna tubing sections

To: Charles Morrison <junkcmp@gmail.com>
Subject: Re: [TowerTalk] Tips for Modelling swaged antenna tubing sections
From: jimlux <jimlux@earthlink.net>
Date: Tue, 29 Sep 2020 09:02:37 -0700
List-post: <mailto:towertalk@contesting.com>
On 9/29/20 8:52 AM, Charles Morrison wrote:
No. Outside.

So you have a small bump in diameter. Model it as such. Add a short 1 segment wire that is the diameter of the swaged part. realistically, if it's a "tiny" part of a wavelength, it's not going to make much difference.



On Tue, Sep 29, 2020 at 11:49 AM jimlux <jimlux@earthlink.net <mailto:jimlux@earthlink.net>> wrote:

    On 9/29/20 8:31 AM, Charles Morrison wrote:
     > Is there an accepted reduction percentage that is used ?
     >    How do you model the swaged portion of tubing ?
     >
     > The published HyGain models do not account for it in a separate
    tubing
     > section, so no hints there.

    Isn't the shrunkdown part inside another element? If so, it's not in
    the
    circuit.


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