---->What is the make and model number of what looks like a amplifier in the basement??<----
-->How many Tv's are/will be connected??<--
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A simple reception situation that will receive , Many , Digital Broadcast Tv stations/channels.
NBC , ABC , CBS , PBS and other PBS channels , FOX , The CW , My Network , ION , and , many , many , more.
Above the Peak Of The Roof in such a manner that Reception Is Not Blocked by the Roof and House in the directions of east , south east , north east , north west , west , south west.
Install a Winegard HD7698P antenna aimed at about 116 degree magnetic compass direction.
Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html.
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((Coax and connectors that are open and not connected to any thing outside , are suspect of being water damaged and Bad.
Also All outside connections are suspect of being bad. Inspect All outside connections and coax.
It is best to use the coax that has the Compression type connectors on the ends of the coax , not the Old crimp type connectors on the ends of the coax.
Make sure all connections are snug tight.
To make double sure that water does not get into outside connections , wrap all outside connections and coax with , Coaxseal ,
http://www.coaxseal.com.
Wrapping a bad connection and bad coax with coaxseal , Will Not make a bad connection and coax , good.))
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Here are some above the roof antenna mounts.
http://www.ronard.com/909911.html , use the 5 foot tripod antenna mount.
http://www.ronard.com/34424560.html , use the #4560 eave antenna mount.
http://www.ronard.com/ychim.html.
http://www.ronard.com.
http://www.ronard.com.
But the ronard antenna mount at solidsignal by typing the word ronard in the solidsignal search box or by from ronard.
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Here are some places to by antennas and etc. .
http://www.solidsignal.com.
http://www.amazon.com.
http://www.winegarddirect.com.
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As always, trees and tree leaves , plants and plant leaves , do a good job of , reducing , multipath/reflecting , blocking , OTA=Over The Air , Digital Broadcast Tv Reception and so do buildings and other obstructions including your own roof and house.
It is best to install the HD7698P antenna at a location that has the least amount to no amount of obstructions of any type or kind in the directions of reception including your own roof and house.
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The Tv/s Must Channel Scan for the Digital Broadcast Tv stations/channels , often named the 'Air Channels' or 'Antenna Channels' in the Tv Setup Menu because the TVv transmissions travel through the air from the transmitting antenna to the receiving antenna.
Some Digital Tv's will Automatic channel scan for cable tv channels.
DO NOT channel scan for cable tv channels.
Go into the Tv Setup Menu and select , 'Air Channels' / 'Antenna Channels'.