[TowerTalk] Ground resistance

Stone, Gary R. Gary.Stone at va.gov
Thu Jun 8 12:44:59 EDT 2006

I am speaking about this in terms of lightning protection.

Gary, N5PHT

-----Original Message-----
From: Roger D Johnson [mailto:n1rj at adelphia.net] 
Sent: Thursday, June 08, 2006 11:37 AM
To: Stone, Gary R.
Cc: towertalk at contesting.com
Subject: Re: [TowerTalk] Ground resistance

Stone, Gary R. wrote:
> Greetings,
> I imagine I have missed the obvious but my question is how do you
> measure ground resistance?  Does it take a special meter (I suspect it
> does).  I am writing this in reference to ground rods and grounding of
> towers.
> Thanks,
> Gary, N5PHT

This is one of these questions that comes up periodically for which
there is no simple answer. First, what do you mean by "ground
resistance"? Electricians and power companies are mainly interested
in a measurement at 60 Hz. Hams with vertical antennas are interested
in the resistance at the frequency of operation. Folks interested in
lightning protection have a foot in both camps as lightning has a
large RF component.

73, Roger

Remember the USS Liberty (AGTR-5)

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