The Tv reception is Weak at your location.
Install a Winegard HD7084P above the roof in such a manner that roof and house are not blocking reception to Milwaukee at 17 degree magnetic compass direction or Chicago at 154 degree magnetic compass direction and you have a choice of either direction with the one HD7084P antenna.
The Digital Tv stations/channels are about the same signal strengths either direction.
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 , use the 5 foot tripod antenna mount.
http://www.ronard.com/34424560.html if using a eave antenna mount use the #4560 ,
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.
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Install a Antennas Direct CPA-19 preamp. The CPA-19 preamp has been discontinued , the longer you wait the less likely one will be found.
If do not find a CPA-19 preamp then use a , Winegard HDP-269 preamp.
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For 1 Tv connected use no splitter.
For 2 Tv's connected use a , HFS-2D , 2 way splitter.
For 3 Tv's connected use a , HFS-3D , 3 way splitter.
Buy the HFS splitters at ,
http://www.hollandelectronics.com , or ,
http://www.solidsignal.com.
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Here are some places to buy 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 do a real fine job of reducing or blocking Tv reception and so do buildings and other obstructions including your own house.
It is best to install the HD7084P antenna at a location that has the least amount to no amount of obstructions in the directions of reception including your own house.
The Tv/s Must Channel 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 channel scan for cable tv channels.