Bob, these models with slanted down radials look terrible, and the closer to horizontal the radials get the better the model. I totally didn't expect this, so I'll have to redo the models. I could have made some mistake. Today was Mother's day, and I had a lot going on, which was not my usual routine, and I'm tired. So, I want to recheck this work before I post it.
You'll never believe anything I do or say again, if I show you how bad this Imax, isolated or not, turned out when slanting the radials down.
I've got to tell you though, that I was a little surprised to learn that you slanted the radials down on your Imax experiment, because I seem to recall MM200's antenna had horizontal radials with extended wires to make them full length 1/4 wave. But, I base that idea on a picture I recall and pictures can fool the eye, so maybe his radials were slanted down too. I also understand that the Imax GPK has the radials slanted down at about 40*- 45* degrees as the GPK comes. Am I right?
In the mean time you can check out my thread below, where I addressed a similar issue for the Imax with the GPK at various angles, and you will basically see what I'm seeing tonight, slanted radials on this Imax model are no-way-no. And, that flies in the face of the common wisdom and what you guys did in testing. I doubt you saw what these models predict, and the whole world knows that the Imax uses their GPK with slanted down radials. I don't understand this.
I'll do this project for the 22.5' foot Imax over tomorrow. Did you test both isolated and not isolated? I think MM200 did that with his 1/2 wave, but I'm not sure.
Here is the link to my thread on the Imax with radials at various angles.
http://www.worldwidedx.com/cb-antennas/138879-marconis-eznec5-model-imax-radials-various-angles.html
