Hi I finaly decided to try HDTV and i bought a open box samsung 351 STB. I hooked it up to my antenna in the attic and there is no signal at all. With the anttena I was able to get the local analog channels. But using the STB I get nothing at all. I suspect it could be defective since it was a display model. I've read that DTV signal are easier to get and since i'm getting my local channels fine through analog I should get at least get something. I pulled up the menu to check signal streng and it shows nothing. I Live in the suburbs with no tall buildings around me.