Here is the board
There is nothing tunable so it looks like everything to do with the broadcast is controlled on board. The only thing I can find right of the bat is it is the piece next to the usb connector which appears to be a rectifier but that is for the usb. I don't want to broadcast into the next car or anything stupid I just want it to work in my car like it is supposed to so if someone could point me to the proper area I can do the rest.... maybe.