I have TWC with the SA8300HD and I belive that TWC is doing HD lite.. If I am watching a local channel in HD on Cable then I switch to an over the air (same channel) the picture is VERY noticeably better OTA.. Night and day difference.. Yes I had the techs over and looking at it the use the same antenna I do, their office is only ¼ mile from my home … Any help would be helpful.. I live in Laplace Louisiana zip code 70068
