Go to the
http://www.winegarddirect.con and select the HD8200U antenna and look and read the directions to make sure the Phasing lines And connections are connected correctly so the antenna connections are connected correctly to the connections of the coax connection.
Disconnect and or Remove All amplifier parts , the preamp part , the power injector part , the power supply part.
Connect a NEW long coax to the HD8200U antenna and run the coax through a open door or window and connect the other end of the coax to a converter box , No amplifiers , No splitters , No couplers , No grounding blocks , No nothing.
Here is how to aim antennas ,
http://www/.kyes.com/antenna/pointing/pointing.html.
As always , trees and tree leaves do a real fine job of reducing or blocking Tv reception and so do buildings and other obstructions including your own house.
It is best to locate the antenna at a location that has the least amount to no amount of obstructions of any type or kind in the directions of reception.
The Tv/s Must Channel Scan for the Broadcast Tv Channels , some times 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.
DO NOT channel scan for cable tv channels.
What is reception like now??
If possible , Test reception with a late model or new digital Tv. No converter box.