I currently have an HD set with receiver. I subscribe to directv and get 509 and 199 in HD, well, on March 1st, our local channels will be broadcasting HD OTA, now, I live about 30 to 40 miles from the center of the City. I live on the outskirts, to better explain, I am about 1/10 of a mile from the sign that says, "city limits" not sure if any of you guys/gals are in my perdicament but if you are, how strong should I expect the broadcast. In addition, the sales rep mentioned that all I would need is a regular antenna connected to my HD rec. I really didn't buy that, I am thinking that I may need a Terk Powered Antennae.. any thoughts?