Using an MDR513H fed with cable coax doesn't record the HD digital channels, just the SD ones. I'm not complaining that the recorded resolution is not HD (I reviewed that sticky post for clues). I looked at the 'How Virtualized Cable-QAM Channels Can Cause "Oddities" in Tuning' post, other similar threads suggested when creating this post, and also searched for some keywords, but I didn't get a convincing answer yet. I can record channel 3.5 (an NBC SD feed), but not 3.1 (an NBC HD feed). I get what another post seemed to report: a "black window symptom" when I record the HD channel, with the date/time/channel correctly specified in the timer programming window. I can receive/view both the HD and SD channels. I called Funai support, but the guy had some story about the unit was really only designed for digital channel reception of OTA channels, and he claimed I was lucky to get digital channels over cable. Looking at the unit user guide in the Timer Recording section, it has a table with channel types of "Digital TV" and "Digital CATV", which I would suspect is OTA/VSB and cable/QAM256 respectively. So I wouldn't think the recorder part of the unit would care, and just record its tuner's output. I wouldn't expect it NOT to record an HD feed, but convert it to an SD quality appropriate for a DVD, even though I'm recording to the HDD. While pressing the support guy further, he suggested that if I can view a channel but not record it, it was a copyright issue that was causing this. I did record 3.1 once for the CBS news, but 3.1 for prime time shows did not record, so maybe the copyright issue is what's happening. But, I never had this issue with the DVD recorder (Panasonic EZ48) that this unit replaced. So, is there a simple/clear reason I'm seeing this? Any way around it? I went through the "Magnavox 515, 513, 2160A, 2160, 2080 & Philips 3576, 3575" sticky post, as well as the one below it, and I didn't see a clear answer. Any other thoughts? Thanks.