this is the model I thought might work but it says for cars with Japanese threads. I have no idea if the camper has Japanese threads lol
http://amzn.to/1IIoGFi
this one actually looks a lot like what was on the camper and says its for RVs so maybe this is the right one
http://amzn.to/1B8PfvB
my sister suggested that I get a longer whip antenna with the spring on it because it would probably pull in better stations.
Thanks
(hey, figured out how to add pictures!)