Or you could install one HD7080P antenna and a 2 way splitter, point the HD7080P antenna at Chicago and call it Ok. The reason I am recommending All channel antennas is because of Chicago Tv station WOCK digital channel 4 is transmitting 4 digital sub channels , one of them is
http://www.americaone.com ,
http://en.wikipedia.org/wiki/WOCK-CD , WOCK is also transmitting these digital sub channels , Mega Tv , Arirang Tv , LATV. Also Milwaukee Tv station WWAZ digital channel 5 is not transmitting now , however may start transmitting in the future , and with a All channel antenna you will be ready.