you should return it and get this one instead for 35 dollars.
JVC HD Radio Tuner/FM Transmitter with JVC Do-It-Yourself Car Kit, KT-HDP1/ KVK1018 - KT-HDP1 - Buy.com
if you take a look at the antenna, its just a stand alone, bendable antenna
manual:
http://resources.jvc.com/Resources/0...6/MA370ien.pdf
maybe you can find an antenna like that?
also, can you tell me what you're using for a battery fix?