Originally Posted by BCF68
If you use a reflector it will reject those signals from the back. Unless you want to tell hollands his models are full of crap. I think he'd disagree with you.
Can you provide links to real world tests with spectrum analyzer displays showing the F/R? The models I was looking at for the Gray-Hoverman antenna with screen show the F/R to be about equal to slightly worse than the model for the 91XG.
I tried increasing the screen size on the 91XGs I have up and it made no improvement on the F/R at all.
I had some experience recently building an antenna from a model and I found that the real antenna and the model don't necessarily perform exactly the same. Models have their limitations. Don't get me wrong. I'm not saying they are useless but there are real world factors like position of baluns, feed line, hardware used to build the antenna, masts, other nearby antennas, element length and spacing errors, etc. that can alter the performance that are not part of the models in most cases. And these things never enhance the antenna performance.
I've attached a spectrum analyzer trace of KMMW 28 which is one of my few LOS stations. The F/B averages around 28 dB but you can still see that I'm receiving reflections from the hills because the back trace is so choppy.