GREAT PLANES RealFlight 7 User Manual page 60

It is imperative to move all of the sticks, knobs and switches through their complete
range of motion several times. This is the key to a properly calibrated controller.
When completed, click Finish. You will now be returned to the Select Controller
screen with a calibrated controller.
Virtual Channels-
Many aircraft that are included with RealFlight, as well as user created aircraft, require
5, 6, 7 or even 8 channels to completely operate them effectively. Some radios have
fewer channels. If you are flying with a radio that has fewer channels than the currently
selected aircraft requires, you can use the keyboard.
Channel 5 Key: Y
Pressing Y will act like a two-position switch. Press the key to flip the switch
to its opposite position.
Channel 6 Key: U
Pressing U will activate the knob to one extreme or the other, while holding
the key down will slowly rotate the knob.
Channel 7 Key: I
Pressing I will act like a two-position switch. Press the key to flip the switch to
its opposite position.
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