On 1/1/2021 12:09 PM, Mike Waters wrote:
I am ONE of the people who claim that four elevated radials can have
approximately the same efficiency as 120 buried quarter wavelength radials.
N6LF's work on this showed that imbalance of the current in elevated
radials can significantly reduce field strength. Imbalance can be caused
by differences in heights, lengths, and soil underneath them. Depending
on our real estate, hams may find it difficult or impractical to install
elevated radials having the symmetry of a broadcast station. Rudy has
published work showing that 8 elevated radials are better than 4 for
this reason.
73, Jim K9YC
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