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[Towertalk] Ground wire impedance

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Subject: [Towertalk] Ground wire impedance
From: (Jim White)
Date: Mon, 29 Jul 2002 15:21:16 -0400
....a lot of us use copper tubing slid over reinforcing steel (rebar) as
grounding rods...the thickness of the copper is much great than the
plate on a commercial ground rod - and of course, it is a lot cheaper!

I also use a plumbing compression fitting for home-brew TV hardline
connector fabrication...

Think this the type of thing we used to see in "Hints & Kinks" in QST,
once upon a time in a former lifetime of our hobby!


FireBrick wrote:
> > -- by making it into thin/wide strap (or hollow tube) instead of a filled
> > circular cross-section, keeping the same amount of copper per foot.   That
> > minimizes the inductance.  (Yes, that amounts to the skin effect
> argument -
> > placing all the copper near the surface of the conductor.)
> >
> are you saying that the small coil of 1/2" copper tubing hanging in my
> garage would be a better grounding conductor that my heavy gauge solid
> wire.?
> (I can never remember if the soft copper tube used for water is K or M. I
> think M).
> I think it's 1/2"OD.
> I could easily flatten one end for clamping to ground rods.
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