A simple reception situation , Strong digital tv transmissions. If the house construction is wood frame with wood or vinyl siding then , A simple NON AMPLIFIED indoor tv antenna aimed at about 180 degree magnetic compass (south) will get all of the Many receivable digital tv channels. Here is is how to aim indoor antenna ,
http://www.kyes.com/antenna/pointing/pointing.html. Here are two simple indoor tv antennas that you can buy from
http://www.solidsignal.com , Channel Master CM4010 and the TERK HDTVi . If the house is , concrete , concrete blocks , cinder block , bricks from ground to roof , big rocks for walls , metal siding , metal backed insulation , stucko Wire , metal roof , solar panels , thick dense trees , then reception will be reduced or blocked using a indoor antenna. If you will like to install a Roof Top antenna Above The Roof then install a ANT751 antenna aimed at about 180 degree magnetic compass. Home Depot or Lowes has the ANT751 antenna. A antenna amplifier will not be needed with a outdoor roof top antenna the signals are strong and will supply signal to up to four tv's.