RE: JR reciever
You can try Ebay, as well. I have XP9303's and an XP8103, several PCM 649's and PPM 549s and a couple of Synthesized R2000's ( these will change to whatever 72Mhz channel my Synthesized 72Mhz RF Module is set to just by turning on the Tx and pressing a button on the Rx).