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Topband: Short Verticals

To: "topband@contesting.com" <topband@contesting.com>
Subject: Topband: Short Verticals
From: David Cole via Topband <topband@contesting.com>
Reply-to: David Cole <g3rcq@yahoo.co.uk>
Date: Tue, 13 Jun 2017 21:08:03 +0000 (UTC)
List-post: <mailto:topband@contesting.com>
Hi all - 
Assuming a standard 1/4 wave vertical is 36 ohms - is there any formula that 
will calculate the Z if the vertical is short and brought to resonance by top 
loading wires - I understand the Z will be less - but how much by ? I am trying 
to use the formula on ON4UN disc to calculate the approx LC ratios for 
a Lahlum-Lewallen phasing system.
Thanks Dave g3rcq 
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