Researching at
http://www.rabbitears.info I come up with the following list of signals that are receivable without extraordinary measures needed;
Call Sign RealCH Network(s)
WOUB 27 PBS 1080i, PBS Encore, MHz Worldview
WTAP 49 NBC 1080i, Fox, Jewlry TV, MyN, Radar
WQCW 17 CW 1080i
WSAZ 23 NBC 1080i, MyN, ThisTV
WVAH 19 Fox 720p, The Country Network
WHIZ 40 NBC 1080i
WOWK 13 CBS 1080i, Weather
WIYE 47 Silent/Off the Air
WCHS 41 ABC 720p, The Cool TV
WLPX 39 ION 720p, qubo,IONLife
WWHO 46 CW 1080i
WSFJ 24 TBN, Church Channel, JCTV, Enlance USA, Smile of a Child
As you can see, most channels carry more than one program feed. NBC and CW seem to be well represented, though I don't know if there is a significant difference in local productions, news or sports coverage.
A single fixed aim antenna such as the Winegard HD7696P or HD7698P would be able to cover the signal to the south, WOUB, WQCW, WSAZ, WVAH, WOWK, WCHS & WLPX.
A larger system using a rotator could be expected to add the signals that lie in other directions.