> I can build a ground system with terrible efficiency that
> has low impedance, and build a good one with high base
> impedance. For example W7EL and myself recently carefully
> measured the base impedance of a 40 meter 1/4 wave vertical
> and measured field strength. It was 35 ohms or so. We then
> changed ONLY the ground system and had a new base impedance
> over 50 ohms, and the field strength was much better for the
> same exact power delivered into the antenna.
What did you do to the ground system that made the base impedance go up but
yet increased the field strength?
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