[Stevies3]

What happens when you plug in your cable TV line into the OTA input? Does it recognize the SD stations? Steven

 

[Brantel]

Nope, ATSC (digital OTA) signals only. Also, the station must have guide data available in the sat stream or it will not work.

 

[litzdog911]

Most all Cable TV systems use a digital format called "QAM" for their digital stations, and this format is not compatible with the over-the-air digital "ATSC" tuners used by DirecTV DVRs. You'll need an over-the-air antenna to receive anything with the ATSC tuners.