tv antenna

The Kunkels wrote:
The crank set screw is tight. The crank is frozen. Won't turn.

Assuming you have the common Wingard mount (you never say which antenna you have) - the crank raises and lowers it, it doesn't turn the antenna. There's a plastic ring which pulls down 1/2 inch and then turns to aim the antenna.

It's really not clear what you're describing - you say you can turn it on the roof, but the design is such that you when used properly, you can't turn the antenna unless it's raised first. The crank will stop turning when the antenna is all the way up or down.