I agree with GUM's recommendation. Aim the antenna at about 5 degree magnetic compass. Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html. Here are some Strong and Sturdy antenna mounts.
http://www.ronard.com/909911.html ,
http://www.ronard.com/34424560.html ,
http://www.ronard.com/ychim.html ,
http://www.ronard.com. Here are some places to buy antennas and etc. ,
http://www.winegarddirect.com ,
http://www.antennasdirect.com ,
http://www.solidsignal.com ,
http://www.amazon.com ,
http://www.ramelectronics.net . Buy the antenna mounts at solidsignal by typing the word , ronard , in the solidsignal search box , or buy from ronard.