Fwiw, I did actually try it. I was looking for something that might allow JR a JR-to-Futaba training cord adapter that wasn't the one Hanger 9 sells (since the Hanger 9 one only works one-way, with the JR as the master and Futaba as the student, I wanted the other way around). I thought that since the cables with Real Flight allowed a JR box to work as the student, and they had an adapater, it might work. But apparently there's something in the pinout somewhere, since it didn't work for me when I played with it.