The tv transmissions at your location are strong and easy to receive. If the building is wood frame with wood or vinyl siding and no metal backed insulation and has no metal roof or solar panels. Then a indoor antenna will receive Ok , A Non Amplified Channel Master CM4010 or Terk HDTVi , aimed at about 25 degree magnetic compass. Here is how to aim indoor antennas ,
http://www.kyes.com/antenna/pointing/pointing.html.