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