I installed the antenna! It works! I have great picture.
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
I bought an amplified indoor HDTV antenna by Antennas Direct.
Keep in mind for later: You can have both the cable (through an HDMI cord off a cable box) and an antenna connected at the same time. Your TV remote will have control settings that will let you switch without any re-connections etc.
This is for later, enjoy the game.