+1 on the protocol. Not sure if Futaba works similar to Sanwa but when I bind a new receiver, I have to make sure the radio protocol is set appropriately in my radio. For me it's FH4, FH3, FH2 etc. For you it'd be S-FHSS, T-FHSS and FHSS. And for that receiver I believe you need to be in T-FHSS mode.