RE: my big JR problem
In furtherance of your formal education:
FRED is an acronym for Fuc-in Ridiculous Electronic -Device.
us poor old guys have been using it since the advent of brilliantly engineered crap , which wormed it's way into otherwise nice ,simple pieces of transportation.
To answer your question: JR transmitters will function with a variety of aftermarket recievers . However, there are no other name brand transmitters which will operate with the JR receivers.
The servos are a failrly standarized device and apart from slight mods to the connectors - they will operate with a variety of other transmitters/receivers.