Beagle :
Anything which uses RF and is used in an aeroplane must be licensed unless it has a specific exemption for such use.
So whether you use a hand-held transceiver, cellphone, blue tooth fashion toy or even you car key fob in an aeroplane, it would require a licence irrespective of whether or not it is licence exempt elsewhere.
Now you're obviously a very bright chap, and I assume a lawyer to boot. So what confuses me is that, when you say something needs to be licensed before it can be used in an aeroplane, and I invite you to be explicit and say that this means it must be licensed
explicity for use in an aeroplane, you just repeat that it must "have a licence".
Do you not see why this is confusing for us mere mortals? And despite what you may think, I'm really not trying to be cute or have a pop - it's just that it seems to me to be vague in the extreme ?