If the building is wood frame with wood or vinyl siding , no metal backed insulation , no metal roof , reception should be Ok.
Aim a TERK HDTVi non amplified antenna at about 5 degree magnetic compass , in between the Digital Tv station and stations to the north west and north east.
Extend the VHF channels reception rods out and adjust the rods to a low vee position.
Here is how to aim indoor antennas ,
http://www.kyes.com/antenna/pointing/pointing.html.
If the building is , concrete , concrete block , cinder block , big rocks for walls , brick from ground to roof , metal siding , metal roof , metal backed insulation , solar panels , reception will be reduced or blocked.
Move the HDTVi antenna to a window that is to the north east.
The Tv or tuning device Must Channel Scan for the Digital Broadcast Tv Channels sometimes named the 'Air Channels' or 'Antenna Channels' because the Tv transmissions travel through the air from the transmitting antenna to the receiving antenna.
DO NOT channel scan for cable tv channels.
Here are places to buy antennas and etc. ,
http://www.solidsignal.com ,
http://www.amazon.com.