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[TowerTalk] Transmission Line Formula

To: TOWERTALK@contesting.com
Subject: [TowerTalk] Transmission Line Formula
From: David Gilbert <xdavid@cis-broadband.com>
Date: Thu, 17 Apr 2008 19:01:36 -0700
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
The formula for calculating the characteristic impedance of a parallel 
wire transmission line is readily available for the case where the 
conductor diameters are equal, but can anyone point me to a formula or 
online calculator for the case where the conductor diameters are not 
equal?  I could have sworn that the ARRL Antenna Book once had it, but 
so far I have been unable to find it either there or anywhere online.

Thanks in advance,
Dave   AB7E

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