i have an 07 wrx. when i use the rear defroster my stock radio signal is all static. i am guessing that the rear defroster and radio antenna together in the rear window is the cause for the static. mostly use my satellite radio with the fm transmitter till i get my new system installed. it also does it with the regular radio stations. my question is anyone else have this problem? can it be fixed? how to fix it? when i install my new system once i get the rest of the items needed will i still have this problem. thanks for the help.