Don't understand why they went to that P.O.S. antenna. Digital is either on or off, it seems. I would save up and have CW install a Jack antenna for their $39. special installation price. We bring our satellite antenna so I don't even bother with that worthless thing FR installed.
Make sure your connections are good and your booster is on. When I am at my house in the burbs) I can get all sorts of channels. Even 50 miles away from the towers I still get a few when I am camping.
I am pretty sure I have the same antennal in my SP-220