Yes it will work, assuming that the ff6 is the same or close to a 6xa. You need to plug the Gain cord into the Channel 5 output of the reciever, and the rudder in to the rudder channel (4 I THINK???) You can control the gain of the gyro by using the ATV percent on channel 5 in the ATV menu, and you can control the HH or NON HH mode using the AUX channel 5 switch located at the top of the transmitter, if flipped one way the gyro will be in HH in the other direction in Rate Mode.

So yes it will work.......


Here are the directions for you gyro, study them carefully....http://www.rcmodels.org/csm/400full.doc


Regards,

Rob