Thanks, rabbit73. That's quite helpful, and a lot of work on your part.
I do have a DB8 (not DB8e, although I can order one) pointed 200°. With that, I actually pic up channel 7 ABC very well, along with Fox 18, PBS 10 and 34 (same programs, different channels). When I move it just a little to the south, I pick up channel 3 NBC and (barely) CBS 6, but lose ABC. But ABC is more important due to weather (thunderstorms, tornadoes) because it is from Lawton where I live and the other networks are based in Wichita Falls, 60 miles to the south. Any ideas how to fix that?
I did find the following by GroundUrMast that I think looks very promising and along the lines of what I was considering...
http://forum.tvfool.com/showthread.php?t=2882
Thoughts?