> -----Original Message-----
> From: towertalk-bounces@contesting.com [mailto:towertalk-
> bounces@contesting.com] On Behalf Of W7CE
> Sent: Friday, September 14, 2007 9:14 AM
> To: towertalk@contesting.com
> Subject: Re: [TowerTalk] Ufer gnds/foundations
> Regardless of which grounding system I use, I am thinking that deeper is
> better, especially since my soil is very dry for the first 7-8 feet.
> Here's
> an interesting link that I found last night on the subject of ground rod
> depth:
>
> http://www.cpccorp.com/deep.htm
>
> 73,
> Clay W7CE
Note that the reference, while they do make mention of lightning, is only
dealing with DC and 60 Hz power ground systems.
Deep ground rods can have good results at power line frequencies but as a
lightning ground the length gets too long and has too much inductance to be
effective. It is much better to use several shorter properly spaced rods. In
dry soil, getting down to where there is moisture is of benefit even with
the higher inductance.
73
Gary K4FMX
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