Bill, K2WH wrote:
"What would be the radiation pattern of a vertical with ground radials in
a 180 degree arc. That is, 60 radials on only (1) side of the vertical
with no radials and average ground in the other 180 degrees."
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Over "average" ground the pattern would be slightly oval with a "F/B
ratio" of about 1.33 dB. Directivity favors the same direction that the
radials run.
The directivity varies with the soil conductivity. Over "very poor"
soil, the "F/B ratio is about 3.59 dB and over "very good" soil it is
about 0.63 dB.
These results were obtain using EZNEC for a full-size 1/4 vertical with
60 1/4-wave radials covering 180 degrees of a full circle.
73, de Earl, K6SE
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