Am I correct in thinking there are legal restrictions in using 'walkie talkies' from aircraft? Not sure where I get this idea from - I think hang-gliding days where we used CB radios (I think) and I was told it was legal for my instructor to talk to me from the ground, but not vice-versa.
To be fair, a loose formation of microlights could probably generate quite a high level of useful chitter-chatter even if that isn't always the case.