On the tivo com vip site under the faqs it has the following info listed: Will the Series3 HD DVR work without CableCARD(s)? Yes. Without CableCARD(s) the Series3 HD DVR will still be able to access in-the clear digital cable channels (generally local channels), basic cable channels, ATSC digital over the air channels (available in high definition in most areas) and analog antenna channels. I had been looking for specific evidence of this. I would still have liked them to say that they will provide guide data and be able to record in-the clear digital cable channels.