NEC-LIST: quick and dirty vertical antenna model hack?

Say one wanted to model some arrays of 1/4 wave vertical monopoles and
include an approximation of the ground losses, etc.

Would a reasonable hack be just to put a resistive load of a few ohms into
the bottom segment of a vertical attached to the ground plane? (as opposed
to exhaustively modeling the actual grounding network).

I'm looking at modeling some "forests" of verticals, and I'm more
interested in the mutual Z effects vis a vis feed networks (which I'm doing
with NT cards) and the influence on the patterns that result than in
agonizing over precise grounding models.

James Lux, P.E.
Spacecraft Radio Frequency Subsystems Group
Flight Communications Systems Section
Jet Propulsion Laboratory, Mail Stop 161-213
4800 Oak Grove Drive
Pasadena CA 91109
tel: (818)354-2075
fax: (818)393-6875

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