Is the antenna aimed at about 40 degree magnetic compass?? The >< shaped metal reception elements are directed at the transmitters. Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html. The best for reception is wood frame with wood or vinyl siding and standard composition singles. The following will reduce or block Tv transmissions , metal roof , metal siding , concrete walls , concrete blocks , cinder blocks , bricks from ground to roof , solar panels. Also check ALL connections , look inside of the connectors on the ends of the coax , if the foil shield / shield wires are pushed in or are touching the center wire of the coax , use the point of a knife or Small flat blade screw driver to push the foil / wires away from the center wire. If the foam that surrounds the center wire is smashed flat use the point of a knife or Small flat blade screw driver to make the foam more round around the center wire. Are there any splitters , some splitters are designed to pass power from the preamp power supply to the preamp and some do not. Put the power supply of the preamp on the same coax that the preamp is connected to , that way you know that the preamp that is mounted close to the antenna is getting power. You should receive several channels even without a preamp. A way to 'prove out' a antenna and reception is to connect a known to be good coax to the antenna and run the coax Direct to the Tv and connect direct to the Tv that has Digital Broadcast Tv Tuner. Also the Tv needs to scan for the Digital Broadcast Tv Channels , sometimes called the 'Air Channels' or 'Antenna Channels' . Do Not scan for cable tv channels.
