I’m trying to set up an amplified antenna on my JVC RM-C14G?

Trying to set up an amplified antenna on my JVC RM-C14G (which is an older TV) I’ve gone to the menu option and changed the tuner mode to “air”, then started the scan. My TV picked up a few channels but I can’t find them on the Tv. I’m not sure what I’m doing wrong here, haha. Please help!