Maybe there is a better way to do, but this one works fine...

I'm using channel 8 of the radio and the following switches : SW8 (2 positions) and CTRL9 (3 positions)

In the main menu, navigate to “controller settings”

Go to channel 8 and activate the CTRL19 (3-pos switch) as shown here :

Then adjust the following values (+32% and +32%) :

Now back to the main menu, choose “Free mixer” and set the following values (i'm using the third mix in this example you can choose M1 if you want). First S => 8, then select the SW8 (2-pos switch) and then go to the arrow on the right to set the travel and offset.

Set travel and offset according to the following screen :

And that's it you're ready to go... I have the following values, which works fine.


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3D Robotics
Comment by Chris Anderson on February 26, 2012 at 5:42pm

Excellent. Added to the manual here

Comment by Colin Bouriquet on February 26, 2012 at 5:55pm

Thanks Chris.

Comment by Thomas Kramm on February 27, 2012 at 11:26am

Thanks a lot!!!!

Comment by Alain on March 9, 2012 at 5:38am

Thanks a lot!

Comment by Colin Bouriquet on April 23, 2012 at 4:02am

Sorry Michael for the late answer... I have no experience with Graupner telemetry and have never tried the SD card yet.

Comment by Furet on April 23, 2012 at 12:10pm

Work fine for me thanks a lot Colin.

I use 3 modes and with your post i have 6 modes now.

Thanks again

Comment by Arthur W. Vieira on July 12, 2012 at 1:53pm

I do confirm that this works with the MX-20 also. Thanks!!

Comment by Captain Silver on April 16, 2013 at 2:22pm


thx for this post. How can i creat the rest of the PWM pulse signals. Add more mixer? If yes, what are the settings for the additional mixer, thx!

Comment by Carlo on May 21, 2013 at 7:55am

I really liked your post about the six modes for the Graupner Mx-16.
I followed your guide but I can't get the last part about the frequency, periods and so on...
How can I check that? Where can i find it on the radio?
Thank you,

Comment by Gunnar Baardsen on June 7, 2013 at 12:52am

I'm a newbie to quad flying (and flying in general). Just got my 3D Robotics Arducopter in the air, done some flight tests and got it to fly stable in Stabilize, Alt Hold and Loiter.

Have tried to set up my Graupner MX-20 according to these instructions, but can't get my 3-way switch (CTRL-9) to work in combination with the 2-way switch (SW8).

The display of my MX-20 it slightly different than the display in these instructions. Can someone with a MX-20 transmitter please post som pictures and comments on how this is done??


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