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Re: [TowerTalk] 160M vertical dipole ?

To: "Lux, Jim" <jim@luxfamily.com>, towertalk@contesting.com
Subject: Re: [TowerTalk] 160M vertical dipole ?
From: "Richard (Rick) Karlquist" <richard@karlquist.com>
Date: Sun, 23 Jan 2022 15:23:50 -0800
List-post: <mailto:towertalk@contesting.com>


On 1/23/2022 11:00 AM, Lux, Jim wrote:


What's interesting is that the directivity of a infinitely short dipole is 1.5 dBi, and a full size half wave is 2.15 dBi.  So a shortened dipole with capacity hats, loading coils, or matching network will be pretty much the same (within a 1/2 dB) as far as the far field goes for the same center height.


Correction: the gain of an infinitely short dipole is actually
10 LOG 1.5 = 1.76 dBi, so there is even less difference than you implied.

73
Rick N6RK
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