If the Winegard HD7694P antenna will fit on the porch , then aim the antenna at about 330 degree magnetic compass.
Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html.
As always the starting antenna aim direction is the --> starting antenna aim direction. The antenna can then be turned to get the best reception.
The best way to get the coax from the antenna to the Tv is with hole through the wall.
Here ia an other way to do it ,
http://www.hollandelectronics.com.
Flat coax # 144823.