A Tv antenna will not be in the attic , Atlanta Tv transmissions are to weak. To have a clearer understanding of using 1 antenna to receive from Atlanta with stronger signals the , networks , independents , PBS's , in other words , all of the channels you will like to receive with 1 antenna. Make 2 new radar plots with the antenna at 20 feet and 30 feet high to get stronger signals from Atlanta. Keep the old radar plot for a comparison of signal strengths. Post here so I can evaluate the convience of using 1 antenna. Read and understand this about Real Digital Tv Channels , Virtual Digital Tv Channels , Analog Tv Channels.
http://forum.tvfool.com/showthread.php?t=695