[TowerTalk] Modeling a Cushcraft Beam

[D. Scott MacKenzie]

I am trying to model a modified CC 215WB for 2M SSB.  Whoever did the
modification did a poor job, because it has no gain and poor pattern.
Checking my model, using a known antenna (M2 2M9SSB), I get similar pattern,
F/B and forward gain as indicated in the M2 literature - so I know my
methodology is correct.  What is the correction factor for elements not
insulated from the boom?

Thanks Scott