I have an SR3300T on the way with a damaged antenna and am wondering what I need to replace it. I've read its not just a wire like the FM systems I'm used to, and that its a coax wire that plugs in. Where can I get a replacement?

I see that Amain has a case for a SR3100 and an antenna for 7$, is this the same antenna I need? And is it available somewhere without the case I don't need?

Thanks
Dan