"Roy Lewallen" wrote:
EZNEC pro program types (EZNEC-M and EZNEC/4) allow direct inclusion of
the surface wave in the far field analysis, mostly for the use of AM
broadcast consultant customers. It provides tabular and graphical outputs
in the form of an azimuth plot at any desired horizontal distance from the
antenna and height above ground. Like NEC, the output is the total field,
or in other words the sum of surface and sky wave, and the results should
be virtually identical to those from NEC.
______________

This is as may be, and can be useful when properly understood and applied.

But is it not true that for the ground-mounted monopoles defined in my
previous posts, no form of NEC and its Windows shells will show in a
_single_ evaluation whether in tabular or graphical form, the net values of
the surfacewave+spacewave elevation pattern at a user-specified distance
over real earth, for all elevation angles in a given azimuth slice?

RF