Topband: More anecdotal "stories" to cause one to stop and....

Paul Christensen w9ac at arrl.net
Mon Sep 9 19:34:32 EDT 2013


> "As an example though, EZNEC shows FS of a vertical as virtually zero at 
> zero
degrees. We know that isn't true."

And as has been repeated a number of times between myself and Richard Fry, 
the right tool is needed to obtain accurate low-angle results from a 
base-fed monopole.  One such tool is 4Nec2's surface wave modeling 
application when running under NEC4.  The surface wave tool is designed 
expressly for low-angle modeling just above the earth's surface.

The surface wave tool most be used in conjunction with the normal modeling 
application to get a complete and accurate vertical profile from 0 through 
90 degrees.

Paul, W9AC



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