For reception with the least amount of situations , I recommend go straight to above the roof.
Install a Winegard HD7696P antenna Above the roof aimed at about 190 degree magnetic compass.
Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html.
Here are some above the roof antenna mounts ,
http://www.ronard.com/909911.html ,
http://www.ronard.com/34424560.html ,
http://www.ronard.com/ychim.html ,
http://www.ronard.com.
Buy the ronard antenna mounts at solidsignal by typing the word ronard in the solidsignal search box.
Here are places to buy antennas and etc. ,
http://www.solidsignal.com ,
http://www.winegarddirect.com ,
http://www.amazon.com.
-->How many Tv locations are/will be connected?? <--
The Tv's or separate tuners Must scan for the Digital Broadcast Tv Channels sometimes named the 'Air Channels' or 'Antenna channels' in the Tv setup menu because the Tv transmissions travel through the air from the transmitting antenna to the receiving antenna.
Do Not scan for cable tv channels or satellite tv channels.