At what distance from the tower will ground rods be ineffective due to
wire inductance?
John KK9A
To: Ray Benny <rayn6vr@cableone.net>
Subject: Re: [TowerTalk] Lightning protection - length of grounding rods
runs from tower?
From: Chad WE9V <chad.we9v@gmail.com>
Date: Wed, 28 Jan 2015 22:27:40 -0600
On Wed, Jan 28, 2015 at 6:37 PM, Ray Benny <rayn6vr@cableone.net> wrote:
> My question, or request for your thoughts, is it better to run 3 grounding
> wires out 40, 50 or 60 ft (8 ft ground rods about every 16 ft connected
> with bare #4 wire) or to run say 6 ground wires out, perhaps 30 - 40 ft
> outwards? I have room in all but one direction to trench out a 100 ft if
> that would be even better yet.
>
More shorter wires, not less long wires. The long wires are higher
impedance(inductance). More wires lowers inductance.
See page number 11, start of Chapter 2, of this PDF:
http://www.radio2way.net/Polyphaser%20Guide.pdf
Polyphaser knows what they're talking about. The entire book is good.
Chad WE9V
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