I recommend a one antenna solution. A Antennas Direct C2V , UHF - VHf high band antenna , aimed at about 70 degree magnetic compass. Also a Antennas Direct CPA-19 preamp.
http://www.antennasdirect.com.
http://www.antennasdirect.com/store/...VHF-Combo.html Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html. By googling the tv stations call letters as an example , like this -> k21hx tv , I found that k21hx tv has these digital sub channels , ABC , NBC , FOX. k51ke tv has weather and two local channels. k49cu tv has , FOX and My Network. kccw tv is CBS. kawe tv is
http://en.wikipedia.org/wiki/KAWE . k27jf tv is NBC and a weather channel , This is a tv translator licensed to the city of Walker , the programing is KARE NBC ,
http://www.northpine.com/broadcast/m...anslators.html