brandonb959 wrote:Does anyone here have experience with the SWR Illumitron that claims "Typical random variations are reduced from +/- 10 dB to less than +/- 2 dB"? ,,,
This link tells more about that concept: http://www.swr-rf.com/products/illumitron.html
The "random variations" there apply to the elevation pattern, not the azimuth pattern. So whether or not the station is licensed as a directional in the horizontal plane is irrelevant to this claim.
Such antenna arrays produce essentially no sidelobes in their elevation patterns by using 1/2-wave vertical spacing of their radiating elements, each with identical radiation patterns when mounted on the supporting structure (which can be unlikely), using binomial, equally-phased power distribution across the array.
But this antenna configuration may produce much higher fields near the earth close to the antenna site, which may lead to an aggravation of blanketing interference problems, as well as requiring more cost to buy, install and operate the FM transmitter and antenna hardware needed for this system configuration.
For more information about this please refer to paper 5 at http://rfry.org