SuperMidget

Short answer, no it will not work. no channel offers off-air high def programming.


Long answer:
In order for HD to work, it must be a digital signal. Chances are the off-air channels in atlanta are still analog. However, you might luck out and they have gone digital. To get the digital feed, you must find out the spectrum and purchase the appropriate antenna. I can't remember off the top of my head, but I think you will want multidirectional, low power, with gain control in the uhf spectrum.

But just because you get the digital feeds, while better quality, you will not get HD channels off air. To the best of my knowledge only ten channels offer high def programming. (HGTV, Travel Channel, Animal Planet, Food Network, these are all I can remember off the top of my head.)

Those channels will only come in from a bird. (A satellite, Satcom Galaxy 5 if I remember correctly.)
It is not possible to get the feed from the bird uness you are a cable tv provider.

So your best option is to get digital cable from Bell South. You will need an HD reciever, but your digital box will have one, and you need to make sure to get good quality component cables to go from the cable box to the TV. What the company means by HDTV is that it can interpret HD analog signals. What the cable box does is change the signal from Binary to either HD analog or standard analog.