Is this a , house , town home , condo , apartment , mobile home , motor home , or etc.??
What directions do the , windows , patios , balconies , face ??
What floor??
How many floors??
What is the top floor??
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The Main Group of , OTA=Over The Air , Digital Broadcast Tv stations/channels is/are to the South and a Little West.
Put the HDTVi antenna in/at a ~ South ~ facing window aimed at about 210 degree magnetic compass direction.
Here is how to aim antennas ,
www.kyes.com/antenna/pointing/pointing.html .
Use a Real and Actual magnetic compass to aim antenna.
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The Tv Must Channel Scan for the , OTA=Over The Air , Digital Broadcast Tv stations/channels , often named the 'Air Channels' ~ 'Antenna Channels' in the Tv Setup Menu.
The ATSC channels , aka , 8VSB Digital Broadcast Tv.
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'.
Scan for channels.