I usually have it on top of my 57" RPTV, though I've tried it off to the side in various locations as well with no better success. It usually doesn't work well when I first enter the room (and the TV is off). If anything it seems to work works better after the TV has been on for a while, but that's just a rough observation and hardly scientific. The most accurate thing I can say is that some nights it works like a charm and others it doesn't work at all (and it rarely works well during the daytime).

BEK