Install a Antennas Direct DB4e with Antennas Direct CPA-19 preamp in the attic aimed at about 229 degree magnetic compass. Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html. Most attics have a power outlet , so install the preamp and the power supply for the preamp in the attic. Here are some places to buy antennas and etc. ,
http://www.antennasdirect.com ,
http://www.solidsignal.com ,
http://www.amazon.com ,
http://www.ramelectronics.com ,
http://www.tigerdirect.com.