Thread: Vertical Antenna Performance Question
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Old February 15th 08, 08:52 PM posted to rec.radio.amateur.antenna
Richard Clark Richard Clark is offline
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Default Vertical Antenna Performance Question
On Fri, 15 Feb 2008 12:37:55 -0800 (PST), wrote:

AI4QJwrote:
I suspect that the EZNEC program is not designed for taking into account
such "rare" phenomena as "ground wave propagation". So much for EZNEC
analysis at 75m.
....
EZNEC information tells you nothing about ground wave
propagation.

Two things wrong with this:
1. EZNEC does provide information about the radiation characteristics
along ground at any distance on an infinite, flat plane and at any
elevation above it;
2. EZNEC is not a propagation modeler as its users are well aware;
3. EZNEC models the 100M work of Brown, Lewis, & Epstein quite
closely. There is nothing in the body of RF literature to suggest
that the nature of radiation shifts suddenly in 7/8ths of a megahertz.

73's
Richard Clark, KB7QHC
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