Programable Mixing and Trim Include -

This allows you to mix any channel into any other channel. So some applications might be

1. To use two channels to drive two aileron servos. One servo would be in the Aileron channel and one would be in a spare channel - say flap. Then you mix aileron into flap (100% usually) and you then control both ailerons but from separate channels. This allows you to set up differential ailerons to minimise adverse yaw and other problems.

2. To use two servos to contol the two halves of the elevators - similar to above.

3. To compensate for a flat bottom wing's tendency to climb under increased power - mix the throttle into the elevator so that as the throttle increases, a small amount of down trim is added.

4. To mix aileron into rudder. This allows you to fly a plane that really does need coordinated turns (aileron and rudder and elevator all used in turns) without actually having to use the rudder stick. My Decathlon is a real handful without rudder in turns - it just wants to turn very large turns but with a bit of rudder mixed in it makes the plane much easier to fly and land. (This is cheating and I really should learn to use the rudder as well).

An example of "trim include: would be where you are using two channels for the elevator. If you adjust the trim on the elevator channel so there is - say - a small amount of UP trim then this is also applied to the other channel and both elevator channels match properly. If you use a mix which does not allow trim include, the trim would not affect the second channel.

Hope this helps a bit.

Mike