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?

Thanks,
Dan

Cecil Moore wrote:
dansawyeror wrote:

Thank you. I actually tried that as one experiment. The loads window
showed the connection as you described.


There's one point of caution. The lumped load function will
not accurately predict the phase shift through a real-world
coil. Many antenna designs use phasing coils. The lumped load
feature of EZNEC will not accurately model those antennas.
If phasing coils are used, the EZNEC helix option should
be used which does seem to model the phase shift through the
coil.