On Tue, 03 Oct 2006 17:46:13 -0400, "J.B. Wood"
wrote:

I have never tried to model
an antenna with NEC that included dielectric material nested between
wires.

Hi John,

EZNEC has the capacity to model wires with insulation. I presume that
is a legacy of NEC, but I will await tutoring on that point from other
posters. Carry that a bit further, it has at least "some" capacity to
model wires with material nested between them. After all, the
difference is in degree, not in concept, and the degree is hardly
remarkable. When I observe common window line, it is not all that
different from two insulated wires. Further, there is nothing
remarkably different to the degree that the Lattin analysis is so
entirely thrown off as to be wholly useless. For that matter, I
haven't observed any postings here on any Lattin analysis other than
my own. If this all hinges on TV type twin lead, then too much credit
is being given to too little plastic.

73's
Richard Clark, KB7QHC