We actually used all 6 channels at our Pre-Ship scrimmage. We did post warning to the teams that their *might* be interference, but as far as we could tell, everything went ok when the team numbers were programmed correctly and the robots were all working
IFI did tell us there was nothing else we could do about it (old radios or anything else), but as I mentioned, it seemed to work ok. Just make SURE that you have ESTOPs!