Buddying with different Spektrum transmitters - MORE INFO

silverman166

New member
Please advise on how to correctly set up a buddy system using DX8 G1 as master with DX6I as slave, using only basic settings ie without using dual rates, expo, etc.

Thanks.
 

silverman166

New member
BACKGROUND INFO TO ORIGINAL QUESTION :
Basically I am an elderly 'old school,' ie pre-digital, multi channel learner flyer who has been away from the hobby for a long time, and have spent some time training with a Spektrum DX8 G1 tranny on my Boomerang electric trainer, wirelessly buddied with an NX8.
I was getting to the stage where I felt I was ready for landing, but had to change clubs. On trying to fly there, I found I was having difficulty with what I perceived to be a lack of response to my Tx inputs. This was explained to me as probably being due to the use of Expo on their
Master Tx, whereas previously, afaik, expo had not been used with the NX8, and I was therefore used to flying without expo.

If the Master has expo settings on, when control is handed over to the Slave Tx which has no expo settings, will the plane's receiver react to the Master's expo?

Any guidance/advice gratefully received.
 

LitterBug

Techno Nut
Moderator
That, is a really great question that I'd like to know myself. Unfortunately I no longer have any Spektrum Transmitters to test with. Everything I have is now EdgeTX, and it could plausibly behave differently. In theory, they should pass the sticks raw before any mixing or expo is done on the channels and be used as inputs before any mixing/expo is done in the teacher radio. You wouldn't want to end up with a double mix or double expo if the student radio had "extra adjustments" made..,,,
 
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Piotrsko

Master member
Passing raw stick position is generally what they do, the trainer has the appropriate related transmitter appropriate to the model and the trainee has the "buddy box" which can be anything. Dont know if modern stuff has digital trim, back in the old days it was a manual offset of the pot, could now be digital offset on an encoder sent in binary format. Do know you cant use my 72mhz AM with a digital even if they both have pots. The stupid computer radio encodes the pot position.