Richard Fry wrote:
The link below leads to a NEC-2 study of a short vertical monopole
for two mounting/operating conditions stated in the study.

It shows about a 13 dB advantage in the surface wave launched by
the roof-mounted configuration in this comparison.

Similar affects should apply to verticals used in the ham bands,
so this result might be useful to some readers here.

http://www.keepmyfile.com/download/3ef1691784487

RF


It would be more accurate to bill this
as "Mediocre radial system vs 20 m x 30
m solid aluminum ground screen ".

I suspect much the same results would
obtain for the roof mount, even if the
roof were at ground level.

73,

Chuck





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