Peter, thanks for the links. I may try to get my existing antenna out of one attic and put it in another (one pointed towards New Orleans vs Memphis) and see if that helps.
Scott
Good luck! Careful placement is essential when putting an antenna in an attic. A fraction of an inch can mean the difference between getting and not getting a channel. I spent an entire afternoon tweaking and re-tweaking my antenna's placement. It was a tedious process. If you can, find someone to help you by monitoring the signal strength on the TV while you tinker up in the attic. That will save you a lot of time.
