The Super Cub has proprietary electronics, so if you wanted to use a standard aircraft radio, you'd have to gut it, and put in a new ESC, receiver, and servos. The receiver is not on the standard 72MHz aircraft band, it is on the 27MHz RC band, so you can't just use a standard aircraft transmitter. The receiver is contained in the all-in-one unit that has the receiver, ESC, and servo drivers in one enclosure, so you can't just replace the receiver without gutting the rest of the stock electronics. You can't even re-use the servos because they are four wire servos with servo driver electronics in the all-in-one unit! I'm sure this integration makes it cheaper, but it also makes it more difficult to upgrade.