You are correct. That is why I didn't ask any questions here.
It was a good idea to come here for more advice.
You can also try AVS for more answers:
http://www.avsforum.com/forum/25-hdtv-technical/
Maybe
ADTech can help you when he sees this thread, since you are using a DB4e antenna. He works for Antennas Direct and gives good expert advice.