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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. ---- Reg, G4FGQ. |
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