OTA is awesome. I am about 40 miles and of course there are trees and hills between me and the tower but that doesn't matter. The signal is not "line of sight" only. The only thing that causes trouble with my self made attic antenna is when a heavy rainstorm comes between me and the towers. Otherwise it is excellent quality network programming in REAL HD (cable companies compress their HD) for free. There are places with no reception but even distances over 100 miles from the tower are very possible.