you can use the XS3 with just about any FM RX. heck for a while I was using my XR3 with a crystaled JR RX on one Rc, a synthesized JR RX ona another, a Novak XXL futabal model on another RC. Then I switched to the Airtornics M8 and still used JR Rx's and stuff with them with no problems. as long as they are all FM RX's and have the correct brand crystals to go with that RX it will be fine.