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Re: [TowerTalk] Shack ground

To: "towertalk@contesting.com" <towertalk@contesting.com>
Subject: Re: [TowerTalk] Shack ground
From: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Thu, 17 Jun 2010 09:09:43 -0700
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
On Wed, 16 Jun 2010 22:08:24 -0400, Mickey Baker wrote:

>K7DD is right. Bond to your SPG with as big a wire as you feel you can
>afford. 

Right. 

>Longer path = bigger wire. 

WRONG! Lightning is NOT a DC event. It is a TRANSIENT, with its energy 
centered around the AM broadcast band and extending for several octaves 
either side (that is, from about 200 kHz to about 5 MHz). INDUCTANCE is 
what matters, and that is proportional to length. The only benefit of a 
bigger conductor is that the conductor can discharge more of the event 
before it vaporizes. :) 

73, Jim Brown K9YC


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