The gamemaster most of the time deal with commander role and gamemaster role. He will be equiped with short/long range radio for communication purpose of course.
But when switching to GM mode (or taking role of AI) he will not be able to communicate on his radio if needs be.

Find a way to keep radio com available for GM, at least when on gamemaster view (maybe more difficult to do it when in AI control mode).

Gamemaster should also be able to hear voices based on the GM camera view when in gamemaster mode. So he doesn't have to take his character and teleport it nearby to hear what is happening in the AO.