[antennaware] Convergence problem with EZNEC

Pete Smith n4zr@contesting.com
Wed, 19 Apr 2000 00:42:15 +0000

I am working with models of the Force 12 C-3, trying to model stacks and
their potential interaction with guy wires and wire low-band arrays.

The models I'm using include a simplified monotaper model (7 wires) and one
based on the physical antenna (57 wires).

According to EZNEC, these can be "conservatively" run on 28 mhz with ~ 95
and 130 segments.  However, I find that the gain figures, in particular,
don't start to converge until quite close to EZNEC's 500-segment limit -
the difference can be 1-1.5 dBi.  This gives me real pause for the accuracy
of models using 2-3 of these antennas plus other conductors in the
vicinity, yet staying under EZNEC's ceiling.

Anyone got any advice on how I might deal with this?


73, Pete Smith N4ZR

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