A basic install that would offer the major networks would be any 4-bay panel antenna. Example: The DB4
http://www.solidsignal.com/pview.asp...u=853748001040 That style antenna would easily drive a passive 2-way splitter.
To add the lower power stations (carrying a variety of religious and independent programing) you could go with an 8-bay such as a DB8 or a deep fringe Yagi such as a 91XG. You may need a preamp such as a Winegard HDP-269 to deliver enough signal after the split.
Regardless, I'm thinking you should aim at about 326° (compass).