First I must apologize as I am still learning how to do posts. I don't see a reply I thought I sent so I'll try again. Thanks for your help.
I've added below additional analysis per the request. Also I added a link to my photos dropbox that shows where I am located relative to the nearest TV towers. Perhaps this additional information will enhance your antennae recommendation?
I have flexibility where to mount the antennae. Unless I go at least 10' above ground, I will have tree interference: 20 ft would get me a clear path and I could easily install it anywhere on the walkout basement wall. These options can be seen in the photos. Thanks so much for your help.
photo dropbox-
https://www.dropbox.com/sh/r2fhhnjgviuj1ow/TkqX1p-6Fy
1 ft-
http://www.tvfool.com/?option=com_wr...cc49d607ed3948
5 ft-
http://www.tvfool.com/?option=com_wr...cc49438b480a9d
30 ft-
http://www.tvfool.com/?option=com_wr...cc4981ca82b61d
60 ft-
http://www.tvfool.com/?option=com_wr...cc49875a1afd77
100 ft-
http://www.tvfool.com/?option=com_wr...cc493d2df50cd8