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The Current Tv Channels that are being transmitted and received in the , USA , Canada , Mexico , are.
VHF low band channels 2 thru 6.
VHF high band channels 7 thru 13.
UHF channels 14 thru 51.
Your location has receivable channels in the , VHF high band and UHF band.
The Tvfool channel list and radar report shows the Real Channels and (virt) virtual numbers.
The Real channels are what is being transmitted and received , the (virt) numbers are not Real channels even if the (virt) number is the same as the Real channel.
I recommend install in the attic a ,
www.antennasdirect.net , HBU11K , VHF high band UHF band antenna aimed at about 340 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.
Attics and the Inside of buildings Are Not a reception environment and Never Will Be a reception friendly environment.
If reception issues/problems happen with the antenna in the attic that are not resolvable with antenna aim and location adjustments in the attic then move the HBU11K antenna to above the peak of the roof in such a manner that the roofs and buildings in such a manner that the roofs and buildings Are Not , obstructing , impeding , blocking , reception in the directions of , North North West and South South East.
A antenna system amplifier is not required.