Thanks for the advice Ernie..its strange..last week while waiting for the squareshooter to arrive, i wanted to watch the steelers in hd. I went to BB and bought this cheesey RCA indoor antenna with amp..put it near the outside wall facing the tower..only 5 miles away, and it worked great..strong and locked in..when the SS arrived i took back the RCA and since it was warm put up the SS on the house..20 ft up and clear shot to all the towers..4 out of 5 are great..that 5th one..CBS..wont stay locked on ..it goes to 75 and then drops to the 40s and i loose picture..all 5 towers are within 3 degrees of each other..i tried a amp..it increased the top end but the drop outs continue..is it that sensitive that if im off a degree or so this will happen?..i have to get up and adjust it again i suppose..