How close can transmitters be
A couple of us are trying to fly formation and stand about 5 feet apart so that we can talk. One of the older members told us that this can cause a problem. All of the transmitters are very late models, less than 5 years old and of different brands. Is this a problem? Was this a problem with older transmitters. I have done this about 5-6 times so far without any sign of issues.
Carl