Here is the one my friend went with. It's worked well for him:
http://www.amazon.com/Esky-Amplified-Motorized-Rotation-Infrared/dp/B00502KFNK/ref=sr_1_3?ie=UTF8&qid=1460240041&sr=8-3&keywords=HG-981
I used an ota antenna in the past. It was hooked into my home theater as well. Obviously the antenna will connect to the tv via the coaxial cable. I actually had my house wired so I could hook multiple tvs to use the antenna feed. The sound was connected via a digital cable going from the tv to...