TV reception?

First off, my MH was from my parents and the only time they used the TV was when they had cable at their park. Now I'm trying to get it to work with the Wingard bat wing antenna has me stumped. Tried all switch combinations and no reception. I have the 12 vdc at the antenna cable. I took a extra cable directly from the tv out the door and up to the antenna with no luck (thought I would of received something even with poor reception). Now I just wonder if the bat wing is bad.
Any thoughts?
Thanks