ORIGINAL: tessmar
A couple of comments on the buddy box issue. When I looked at the Spektrum (DX6 at that time as the 7 only came out recently) there was an issue, as I recall, connecting it to anything other than another JR radio. Don't remember the specifics but, seeme323, you might want to check with the LHS or supplier on the issue before purchasing. There is also something about negative versus positive shift in regard to receivers and servos as I recall (I have forgotten about it since I took a different route).
It has been answered several times in the JR/Spectrum support forum that the DX6 AND DX7 are both compatible with JR buddy boxes.
It is
NOT intended to connect to other brands for training.
As far as negative/positive shift is concerned, that is a non-issue as the system
ONLY operates with Spectrum receivers.
NO others.
ANY servos will work with the system though as long as you observe proper plug pin orientation.