Trying to figure out if my Akai LCT2721AD tv is an HDTV. I dont have the manual, but all the specs I can find online say it is and that it has a built in DTV tuner. However, plugging my HDTV Antenna into the DTV jack on the TV (I have both ANT1/DTV and ANT2/ATV jacks) yields zero reception, and when I navigate to the MENU items on screen, there is a "DTV" category, but its greyed out and not available to me. Am I doing something wrong?