The provided Tvfool says , resolved to block level only.
The provided Tvfool report is showing that the Tv reception is LOS=Line Of Sight , the best type and kind of reception.
The provided Tvfool report is also showing that the signal strengths are ver strong signal strengths , the best type and kind of reception.
--->As always , attics Are Not a reception friendly environment and Never Will Be a reception friendly environment.<---
Multi-path reflections signals bouncing around in the attic Are Not Good for reception.
Interference generating devices that are in and close to the attic Are Not Good for reception.
The signal strengths are Strong at your location , amplifier Will Make reception Worse in the attic , a amplifier will make multi-path reflections stronger and make the interference stronger , this is not good for reception.
If antenna aiming and location in the attic not do improve reception then move the ANT751 antenna to above the roof in such a manner that the roof and building are not , obstructing , impeding , interfering , blocking , reception in the directions of , South West , West , North West.
Above the roof aim the ANT751 antenna at about 226 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.
The provided Tvfool report at the block level of resolution is showing that the reception is Strong signal strength at your location.
A amplifier is not required for , 1 , 2 , 3 , Tv's connected.