You are getting a "pass through". (you could probably set up your cable box for a pass through too). But it is not the same as the OTA quality. They just can't send you all the digital information of the original 1080i or 720p, of all the stations at the same time over a cable. On the other hand, the TV station has no problem broadcasting one station HD stream over the air.
Originally Posted by cwsqbm
In my area at least, I hook my HDTVs (and my HTPC with its 4 HD tuners) directly up to the cable (no boxes) and use the QAM signal to watch/record. I get 720p/1080i in the original OTA bit rate.
"Seeing is not believing. Believing is seeing." -Judy the Elf