At 09:07 PM 1/2/2005, K3BU@aol.com wrote:
HFTA shows virtually no difference between salt water
and very poor grounds. You should ask N6BV why that is
but it may because the incident angles are small enough
that ground gain is achieved independent of conductivity
differences.
Leeson says in his book (p. 10-2) "The reflection is from the conductive or
dielectric discontinuity between the air and the surface of the ground
(giving effect to the skin depth), not from some magical underground water
layer." I infer from this that ground conductivity is relatively
unimportant for horizontal polarization, which is all HFTA claims to model.
73, Pete N4ZR
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