The next consideration is the number of channels. Even if you are flying a “four channel” plane, watch how
fast you can eat up 12 channels:
1 -4 will be your standard rudder, elevator, aileron, and throttle.
5 is the channel mixed to drive a second elevator servo.
6 is used for the second aileron, so we can use aileron differential to clean up your rolling maneuvers.
7 is for mixture control on a glow plane, or the choke on a gasser.
8 is for smoke.
9 is for retracts
10 and 11 are for the other two ailerons on a biplane.
12 How about a kill switch for safety?
Sure, you probably don’t need all of these extras today, but someday you may. If you are flying pattern you have
made a commitment to the hobby, so it makes sense to get the best radio with as many channels as you can afford.