dansawyeror wrote:
All,

Thank you for your help to get the basic model in place. It seems to be
working except that ground resistance does not appear to be modeled.
This may be an oversimplification my part in how the source is defined
or connected. It is a simple source connected to the first, lower,
segment. The end of that segment is also connected to a radial system of
8 quite short radials. I would expect to see the feedpoint impedance
reflect the ground system. However, it seems to reflect the vertical
element only. That value is very close to a theoretical loaded element
over a perfect ground. This ground is a medium ground so it should have
some visible effect.

Is it obvious what am I doing wrong?

It sounds like you're using a MININEC-type ground, which isn't
appropriate for this application. Be sure to read the manual sections
involving ground modeling.

Roy Lewallen, W7EL