DB, to me your model of a CMC fix was just another possible solution among the several that I posted above.
The only point I was trying to make in comparing your CMC solution to mine on a Imax with no radials...was the difference we see in the pattern results.
Bob originally raised the point early in this thread that CMC produce bad patterns and I've been trying to support that point with my Eznec models in my posts #33 and #49. I can't be sure, but I also think Bob might suggest a similar solution for an isolation type fix on the Imax...similar to what you did in your model, even though he would likely say we also need to add radials.
So, I took the idea and duplicated your Imax with no radials using Eznec, to see how it compared to my CMC solutions for and Imax with no radials like I posted earlier.
I actually did one model like I think you suggested, with a single ISO 1/4 wave mast below the feed point and not connected to Earth. Then I simply added another isolated mast to Earth...as another model. Both models were posted and described, and it turns out they were very similar in results. Did you overlook that?
To be fair though, I did have to guess at the dimensions...so I just used my dimensions.
I realize you posted you model to prove your point about the phase of the currents on the mast, and I agreed with you on that point.
Again, I wanted to see what such a model's pattern looked like, and how it's performance results compared to the other models I had done earlier.
