Using Tivo 2 with HD Antenna

Just cutting cable and hoping to use my old Tivo 2 to record on a HD antenna. Is there a way to do this? I am very technologically challenged... It says searching for signal on cable box in. When I last used it 5 years ago, it was hooked up to a cable box.

Any help would be appreciated!

Using Tivo 2 with HD Antenna