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Elevation Patterns of Ground Mounted Vertical Monopoles
On 26 Sep 2006 11:56:36 -0700, "Denny" wrote:
the NEC engine does have limitations for low angle signals which is why the authors have installed an angle cut off... Per Richard's citations Hi Denny, Having done a bajillion designs in EZNEC, I take exception to this comment for two reasons: 1. The low angle signals portrayed (or modeled) are easily demonstrable and are certainly experienced by the any Ham; 2. EZNEC (notwithstanding other packages) easily offers 0 degree field data that is within 1 dB of the classic Brown, Lewis, Epstein findings. If there is any anachronism in the NEC packages; then it is the presumption of an Earth with infinite radius (no curvature). Here, the far field curves diverge from the near field projections (and yet you can still recover from that divergence if you wish, it is merely tedious). 73's Richard Clark, KB7QHC |
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