[Antennaware] Modelling transmission lines.

4nec2@gmx.net 4nec2 at gmx.net
Mon Mar 14 03:56:43 EST 2005


> Have to agreeably disagree with Guy on this one. EZNEC does NOT like
> closely spaced lines according to the documentation, and segmentation
> on a 1" line at 160 meters would just not be reliable.
>
> One of the big problems with the NEC-2 engine, and I wish I had the
> answer.

For 40 meters and upwards, you can easily model balanced feeders as 2
parallel wires. (e.q. see tltest.nec as example in the 4nec2 package). If
you are not interested in additional losses of pattern influence resulting
from the feedline, but just in input impedance you can use the TL card
without problems.

Arie Voors.

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