only one plane at a time can share the same frequency,reciever gets confussed with two signals at same time,then gets mad and goes crazy. Think it has something to do with female harmones at reciever.I'm a Futaba man,but I don't think one brand is much different than the next brand,two people can't fly the same channel,period.Salesman needs to go back on buddy box with instructor.
Have a goodun,John.