RE: Can this radio be upgraded?
check the single stick thread for some pics.
the rudder is a big knob on the ail/ele stick. throttle is a slider on the side of the case and is operated while cradling the case in your hand. very similar to a 3 axis video game joystick
all the big manufacturers used to make them way back when...not to be confused with the cheap little 2 and 3 channel radios of today
dave
edit: added pic from single stick thread...