I recommend installing the HD7694P antenna above the roof aimed at about 108 degree magnetic compass direction.
With No preamplifier.
With the HD7694P antenna mounted above the roof , the Tv transmissions are strong and no antenna amplifier is required.
Remove ALL parts of the antenna amplifier , Remove the preamp , remove the power inserter , remove the power supply.
Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html.
I am thinking that there is , bad coax , bad connectors , bad couplers , bad etc. , in the system or a bad preamp or all of the list and more.
As a test of reception , with the antenna mounted above the roof , connect a New looong coax direct to the antenna and run the looong coax through a open door or window direct to the Tv , no couplers , no splitters , no antenna amplifier.
What is reception like now??
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For 1 Tv connected use no splitter.
For 2 Tv's connected use a common simple 2 way splitter.
For 3 Tv's connected use a common simple 3 way splitter.
Here are some antenna mounts ,
http://www.ronard.com/909911.html ,
http://www.ronard.com/34424560.html ,
http://www.ronard.com/ychim.html ,
http://www.ronard.com.
Buy the ronard antenna mounts at solidsignal by typing the word ronard in the solidsignal search box.
Here some places to by reception equipment ,
http://www.solidsignal.com ,
http://www.amazon.com.
As always , trees and tree leaves do a good job of reducing or blocking reception and so do buildings and other obstructions.
It is best to install 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 and that includes your own house.
The Tv/s Must Channel Scan for the Broadcast Tv Channels , sometimes 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.
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