On Mon, 08 Aug 2005 12:27:09 -0700, Roy Lewallen
wrote:

There's considerable work to be done in this field, but what really
needs to be done is the making of good, well documented and carefully
done measurements of elevated radial systems -- not more calculations
based on invalid assumptions.

Hi Roy,

That inspired me to reach for The ARRL Antenna Compendium, Volume 2.

Within it, the very first article, is
"Vertical Antennas: New Design and Construction Data"
By Doty, K8CFU; Frey, W3ESU; and Mills, K4HU

Their 10M vertical(s) above an elevated radial system of 64 wires
presents some interesting results. Albeit, they perhaps do not answer
the questions you've offered, but it does reveal the quality of work
possible.

73's
Richard Clark, KB7QHC