I have an hr20-100 receiver and I have Pittsburgh, PA locals. My problem is, I get the HD channels(2,4,11,53), but my HR20 won't receive the SD channels(13,19,22,40). It won't show them on the guide and I can't direct tune them either. My standard receiver, however, does get all of the locals. Has anyone else had a similar problem? Or does anyone have any ideas ? Thanks.