dykesc wrote in news:447c037c-c3e4-4999-9eb1-
:

http://www.w5dxp.com/ocfv.EZ

I had a look at your model and couldn't make head and tail of it.

Here is a simple model of a Carolina Windom, well to the extent that it
can be guessed from the smoke and mirrors used to describe and promote
it... http://www.vk1od.net/files/CW01.EZ .

The model attempts to represent a voltage balun at the dipole feed point,
a vertical coax feedline to a common mode choke (2000+j2000) and then the
coax outer is grounded via a moderately good station ground (directly
under the feedpoint). The power lost in the ground connection and the
choke can be found from the reports. The model does not attempt to
represent the differential mode transmission line, though it could be
done. The CW's voltage balun at the feedpoint is modelled as a pair of
equal voltage sources, with the common mode path connected between them.
I have treated the voltage balun as having zero common mode impedance, it
is probably a few ohms, but insignificant in this model.

As Roy I think already advised you, you have to model the entire common
mode path to ground and my example above is a simple one, but it
demonstrates a technique.

You will see the currents flowing in the three conductors (each side of
the dipole and the coax outer), and their contribution to / effect on the
pattern.

Others may disagree with my representation of the Carolina Windom.

Owen