ok so here is my question i want to move to 2.4ghz i have a 33% extra with a total of 10 servos, 2 for each aileron, 1 for each elev side 2 on the rudder 1 throttle and 1 choke servo. does that mean i need a 10 channel radio? can i do it with the 7C how would i do it with the 7C i would run out of spots on the RX right? can a power expander be added to a 2.4 system? do i have to match the servos on the ailerons and rudder? this is my first really big airplane and i am confused on the 2.4 setups. thanks oh all servos in the airplane are hitec 645mg

Without using the Futaba MSA-10 Servo Synchronizer, you cannot do what you want to do if you use a 7C transmitter. There just aren't enough channels. Also, if you use a pmix to mix two channels for the elevators, you won't have trim on the second channel. If you have a 7C FASST transmitter, then you will have the 'Ailevator' function, which will mix two channels for elevators and have the trim work. However, you still won't have enough channels/mixes available to have two servos per aileron, and separate channels controlling the ailerons.

Basically, you need "more" transmitter. To do everything you want to do with each servo on its own channel, and properly-mixed, then you'll need a 12FG, 12Z, or 14MZ transmitter.

thank you for your reply. will the 10C work? the other transmitters you mentioned are just a little bit out of my budget. i should be able to do everything through a power expander with only the 7C fasst is that right?