Reg Edwards wrote:

. . . . as demonstrated by program RADIALS2

which treats radials as transmission lines. As they truly are.
. . .

I disagree. Transmission lines have two conductors. Radials don't. The
fields from transmission lines are confined to the region between the
conductors. The fields from radials can couple quite strongly, altering
their performance a great deal. It might be possible to model a radial
system as a system of coupled transmission lines. Is that what your
program does?

Roy Lewallen, W7EL