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Re: [TowerTalk] Transmission Line theory

Subject: Re: [TowerTalk] Transmission Line theory
From: Kevin Schmidt <>
Date: Wed, 2 Jul 2008 08:18:33 -0700
List-post: <">>
A quick numerical calculation for squares of side 2cm with
3cm center-center gave me Z0=127.3 Ohms. This assumes perfect

The approximate equation for large spacing is
Z0 -> 120*ln(2*separation/(1.18*side)) and gives 112 Ohms; so it is about
10 percent off.

I hope this helps,
73 Kevin w9cf

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