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Re: [TowerTalk] More from the M2 antennas quality control file

To: towertalk@contesting.com
Subject: Re: [TowerTalk] More from the M2 antennas quality control file
From: Jim Lux <jimlux@earthlink.net>
Date: Mon, 13 Apr 2015 06:26:11 -0700
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
On 4/13/15 5:37 AM, Patrick Greenlee wrote:
I'm not a Yagi guru or an EZNEC modeler. Can someone tell me what 1/16
of an inch in element length means in performance parameters in the
example below?  I have done mostly wire antennas and 1/16 or 1/8 didn't
seem to make much difference.


this is a 432 MHz antenna with a lot of elements where the elements are about a foot long overall.
1/16" if it's on both sides, is shortening the element by about 1%

The element lengths are critical to getting low side/back lobe performance, although it doesn't change forward gain very much.


As you note, on something like a dipole, a change of a few percent doesn't change the performance all that much.
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