Above the roof of the house in such a manner that reception is not blocked by the roof and house in the direction of , south west , at about 198 degree magnetic compass direction ->WACY-DT REAL UHF Digital channel 27 , virtual number (32.1) MyNetwork.
The Digital Tv reception is medium signal strength to weak signal strength at your location , it is best to install a big antenna so as to receive more signal.
Aim a Winegard HD7698P antenna with a Winegard AP2870 preamp at about 198 degree magnetic compass direction.
Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html.
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.solidsignal.com , or ,
http://www.hollandelectronics.com.
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 , plants and plant leaves , do a good job of , absorbing , multi-path/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 practice 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.
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 Tv 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 the , 'Air Channels' or 'Antenna Channels'.
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Digital Broadcast Tv Tuners can develop - Digital Glitches - that are not cleared out with simple channel scans.
Do double rescan ,
http://www.dtv.gov/rescan.html.