The Signal Vision amplifier does not have 'pass trough' capability when it is off or unpluged. What little bit of signal that is received is being received by the center wire of the coax that is connected to the 'Inactive' Nonactive' 'Not working' circuit of the amplifier. (the center wire of the coax is what carries the Tv signal). The Tv signals are Strong at your location. Remove ALL of the amplifier. And install a simple common 3 way splitter. Aim the antenna at about 144 degree magnetic compass. Here is how to aim the CM4220HD antenna ,
http://www.kyes.com/antenna/pointing/pointing.html. These >< shaped antenna reception elements will face the tv transmitters at about 144 degree magnetic compass (south east).