by BitterDodgerFan » Mon Jun 29, 2009 10:04 pm
did you plug the coax cable in the right place? my guess is you're not plugging in your cable into the right hole, that is if you have dual tuner. does it have 2 separate coax inputs? if so, one is for NTSC analog cable and the other one is for OTA ATSC digital/QAM. if you are just trying to get cable, use the analog NTSC input. ATSC is for digital OTA (with the antenna) or QAM.
if you don't know QAM from NTSC from ATSC, etc. google it and learn what they are. you're not going to get clear QAM out of media center without special tinkering and OTA ATSC won't come out without a VHF/UHF antenna. what you are trying to receive is analog NTSC reception.
in addition you are not going to get ANY HD cable channels through your tv tuner, unless you have a cablecard equipped setup which you don't.