A few months ago there was a post about buddy boxes and the power switch on the slave box.
I swore up and down that the slave box power switch needs to be off.
I learned something new yesterday. My student is using the spread spectrum which of course is JR he bought a JR to Futaba buddy cord. The instructions for the cord states remove the crystal from the slave and turn the power switch on! The system didn't work with the slave switch off.
Happens that another student was having probs(flying JR) we loaned him our cord and our slave box....worked fine.
Sorry for any probs my lack of knowledge may have caused