I have an antenna in my garage attic that is HUGE! It was placed there by the original owner and it's possible it's 12 years old. It gives my TV's that are hooked directly to it excellent reception. My question is...is this older antenna likely to be able to receive HD OTA local broadcasts? I would like to add that to my HR-20 if so. I could always give it a try and see....but was hoping for some insight from you guys first. I do run a couple of TV's in my house strictly off OTA reception and I don't want to lose that. Also, adding a dedicated HD antenna isn't as easy as it sounds...It would be very difficult to install it with the old antenna where it is...and the garage attic is my only place available to put it. I mean this thing is HUGE! I would have to cut it up to get it out of there. He must have installed that thing from little pieces to get it there. It covers most of my garage attic and is intertwined amongst the rafters and beams. I would like to use it if I could.