Unlike yours, mine wasn't damaged. I was just unhappy with the reception I was getting with my old "bat-wing" antennae. I replaced just the head with a "King Jack" replacement head. I bought it at Camping World, but I'm sure they're available on Amazon, E-Trailer, etc. Back then, it came in two models: one for new installs; and one for retrofitting on existing systems. I bought the retrofit version. It came with two mounting brackets (one for round poles & one for the square, crank-up mast my trailer has). It also came with a power booster, but I didn't use that, since I already had it built into my trailer.
Installation was really easy! It took me longer to get out the ladder & tools than it took to swap out the old for the new. Best part was my reception was greatly improved. Instead of 4 channels with the old one, I was able to pick up 8 or 9! I'm able to pick up several channels in campgrounds where my neighbors with the old "bat-wing" or the new "roof-mounted" antennae aren't able to get more than one or two (if any). Was well worth the money!