[Lowfer] Beverage ground question

[John RABSON]

On 26/12/2007 at 17:05 Stan wrote:

[ ... ]

>As an exercise measure your ground rod system resistance in the summer
>and then compare to winter conditions.
>A good system will have the same resistance in all seasons.
You might find the following of interest.

The ground rod system here consists of three 4 foot rods 20 feet apart in at least 10 feet of sandy soil, underneath which is limestone/granite.  Over the past 2 1/2 years their combined resistance has varied a little (measurements at 980Hz):

Q2: 22 to 27 ohms
Q3: 20 to 23 ohms
Q4: 23 to 31 ohms

No figures for Q1.

I suspect the variation is related to rainfall, but I have no firm information on this.  Would anyone like to comment, please?

73
John F5VLF