Since you've been around antennas that long, then you should know, for example, why there is reason that the ARRL long ago required antenna advertisers in their publication to publish gain specifications based on computer modelling, not "field tests". The methodology for all of our performance data is disclosed and should be reproducible by anyone running the same or similar software. If you can find another TV antenna manufacturer who provides this level of technical data, please let us know.
BTW, are you going to give Summitsource a hard time for their ad copy on his page since it's clearly unsubstantiated?
http://www.summitsource.com/antennac...83-p-6356.html