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Re: LF: EARTH RESISTANCE

from [Dick Rollema] [Permanent Link][Original]
To: [email protected]
Subject: Re: LF: EARTH RESISTANCE
From: "Dick Rollema" <[email protected]>
Date: Tue, 17 Dec 2002 11:35:18 +0100
In-reply-to: <003901c2a5b1$cd847680$4d6a0450@oemcomputer>
References: <[email protected]>
Reply-to: [email protected]
Sender: <[email protected]>
To All from PA0SE

Mike, G3XDV, wrote:

I think this is why people are confused. I believe that Dick measured
"system loss", which includes all losses except inductor loss. Calling it
"earth resistance" simplifies the situation too much. Plainly a wet
environment will increase leakages.

I indeed measured the total resistance of the aerial system (minus the coil loss) as I have explained in my e-mail. I agree with Mike that "system loss" would have been a better _expression_ than "earth resistance".  


Has anyone measured earth resistance alone under different conditions? If I
recall correctly, this can be done with three earth stakes and Kirchoff's
laws.


Indeed, but it usually done at 50Hz. To be meaningful at LF the measurement should be performed at an LF frequency. But I'm afraid that will not be so simple.

73, Dick, PA0SE
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