Corrected TVFool:
http://www.tvfool.com/?option=com_wr...0b865b15487ac0
A small, unpowered 7-69 antenna should work perfectly when aimed at Missouri City with a clear line of sight. There's nothing complicated about that TVFool plot as long as mistakes are avoided.
If you're in a metal or masonry building and have windows only in a direction away from the source of the signals, you may find that you're out of luck unless you can catch a reflected signal off a building that bounces back to your window. It's tough predicting that situation.