[BC] Directional Antenna Proofs - Ground systems.

Tim Sawyer tzsawyer at tzsawyer.com
Thu Jun 21 14:40:12 CDT 2012


Richard,
Try your NEC model again  - with the two radials at 0.15 meter depth
(6-inches) - not 1 meter  - I am curious if the results change.

TZS

-----Original Message-----

 From: Richard Fry

Having finally acquired a license for NEC-4.2, I modeled a 1/4-wave,
series-fed monopole (1500 kHz), driven against just two 1/4-wave  horizontal
radials 90 degrees apart, and buried 1 meter in 6 mS/m dc 13 earth.  The
model was constructed per the rules for NEC4, and had no geometry or
segmenting errors.  The calculated h-plane pattern was perfectly
omnidirectional.



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