Can I receive high definition digital TV with the WinTV-HVR-1800 through Cable or Satellite Box?
No. The WinTV-HVR-1800 has an ATSC over-the-air digital TV tuner built-in and supports all ATSC formats, up to the high definition 1080i format . The WinTV-HVR-1600 will support ATSC broadcasts that are currently being transmitted over-the-air. It will not be able to decode HD broadcasts that come through your cable or satellite box. The HVR 1800 also will support clear QAM cable TV channels through your direct cable TV line if available from your cable TV provider.