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I rechecked my I-10K model and I found the radials were short. I fixed that and it improved the gain over Average Earth and at 36' feet. That is much better at 4.23 dbi vs. 3.71 dbi that I posted earlier. Now the model is very close to my Vector model, however the pattern for the I-10K still looks much better to me...even with a 2* degree rise in the maximum angle.