What started out as an antenna theory question has turned into a reception problem question. I quoted your question and have given my answer on the
Help With Reception thread:
http://forum.tvfool.com/forumdisplay.php?f=7
Please go to:
My Answer to "Need Help with Combining Antennas" Post by 4.6 Explorer
http://forum.tvfool.com/showthread.php?t=15747
You will get more help there, and ADTech might have a better answer that I have overlooked. He works for Antennas Direct and has a lot of experience with 8-bay antennas because they make the DB8 and the newer DB8E.