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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TowerTalk\]\s+ground\s+and\s+conductivity\s*$/: 24 ]

Total 24 documents matching your query.

21. Re: [TowerTalk] ground and conductivity (score: 1)
Author: "W4ZW" <w4zw@comcast.net>
Date: Mon, 28 Feb 2005 17:37:44 -0500
I can only offer anecdotal experiences, since I live on an island with the ocean on one side (about 330' from the house ( NNW to S) and a saltwater bay about 350' on the other ( N to SSE). I often ca
/archives//html/Towertalk/2005-02/msg00659.html (10,623 bytes)

22. Re: [TowerTalk] ground and conductivity (score: 1)
Author: Jim Lux <jimlux@earthlink.net>
Date: Mon, 28 Feb 2005 14:48:29 -0800
ACtually, water conductivity measurements are made with AC (to avoid polarization effects). 60 Hz or 1kHz would be common frequencies. I doubt that the conductivity is that frequency dependent, altho
/archives//html/Towertalk/2005-02/msg00660.html (11,849 bytes)

23. Re: [TowerTalk] ground and conductivity (score: 1)
Author: Jim Lux <jimlux@earthlink.net>
Date: Mon, 28 Feb 2005 15:08:36 -0800
Depends on what you mean by simple, and what sort of spatial resolution you want. A straightforward 2 or 4 probe resistance measurement at 60Hz will get you in the ballpark (within a factor of 10, an
/archives//html/Towertalk/2005-02/msg00661.html (11,376 bytes)

24. Re: [TowerTalk] ground and conductivity (score: 1)
Author: Jim Lux <jimlux@earthlink.net>
Date: Mon, 28 Feb 2005 15:12:06 -0800
One's the inverse of the other.. Siemens == mhos Conductivity is in Siemens/meter (S/m) (or, more commonly for water, microsiemens/cm) Resistivity is in ohm meters (or, more commonly for water Megohm
/archives//html/Towertalk/2005-02/msg00662.html (9,901 bytes)


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