Here is how to aim Tv antennas ,
http://www.kyes.com/antenna/pointing/pointing.html . Tv antennas receive the best when the Tv antenna is clear of obstructions. I Strongly suggest a Strong and Sturdy Tv antenna mount such as a , tripod mount , chimney mount , peak of the roof eave mount. Here are places to buy Tv antennas and etc. ,
http://www.3starinc.com ,
http://www.solidsignal.com ,
http://www.starkelectronic.com ,
http://www.amazon.com