Nice performing ATSC/DTV antenna

[old_tv_nut]

"It was suggested to me by someone in this thread that I consider using an ATSC-to-NTSC converter box with my Insignia 19" flat screen, which already has its own clear-QAM tuner. My question is simply this: Are the QAM tuners built into many if not most flat screens that terrible as far as RF sensitivity is concerned? "

Clear QAM tuners are only for unscrambled digital cable, not for over the air. QAM is not broadcast over the air, only ATSC 8-VSB. As most cable companies are taking to scrambling everything, there may not even be any clear QAM signals on your local cable system anymore.