Krell, thanks for reminding me of something BASIC! Doh, I should've remembered that, been studying the same concept lately, except with scanner antennas. Guess I was just thinking of the fact that since they are dissimilar antennas pointing in opposite directions from each other, they wouldn't clash electronically. Though I really don't understand why....suppose the only way to do this the way it might work, is the old A-B switch behind the tv, and just use 2 coax cables. Or build my own cable company , lol.
edit: To add, what I'm doing is trying to watch channels from two cities 90miles apart, and I'm in the middle of them. Neither use the same channels to broadcast . Would the phasing problem still be there in that case?