I have about 9 planes, all on the same frequency and only one transmitter. Consider what DB said and get the starter kit whcih comes with everything. If you decide to go the distance , then get a computer radio which can hold many planes.

Since my fleet is all on the same freq, I can take a reciever out of a plane temporarily without having to buy a new one until mine is fixed. You will find a large percentage have multiple transmitters and frequencies and i wonder "why?" With different transmitters yu can accidnetly hit the wrong swtich because you not use to it. Next thing you know, your plane is in a trash can.