Length & number of radials again
Radials Continued.
Perhaps some kind person who has been able to afford the latest issue
of NEC4 could calculate the radiating efficiency of a typical vertical
antenna of height 9 metres (29.5 feet) and diameter 50mm (2 inches) -
- when fed against a ground system of 50 uniformly distributed radial
wires, each 1.64mm in diameter (14 AWG) buried to a depth of 25mm (1
inch), of length 10 metres -
- in soil of typical resistivity = 150 ohm-metres and permittivity =
16.
But first I should like to ask, can NEC4 complete such a calculation
without human intervention or assistance? If yes then please
continue, perhaps keeping a record of the time involved.
Using program RADIAL_3 the answer is - Radiating Efficiency = 86.0
percent.
If several of you participate, perhaps using different tools, it would
be interesting to compare results. By all means, join in!
Thank you for your assistance.
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Reg, G4FGQ.
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