Warmtoast, knew someone would know. Almost the complete set there and also the NATO.
If you flew out of area you needed a specially crystallised box for instance to fly from UK to NATO. I remember the AEO swapping boxes inflight as we flew from UK to Malta. Also swapping the crystals whilst airborne.
The Russians only had 4 channels in their fighters so the V-Force comma jamming just aimed to deny them their fighter common. A cunning plan but I think there was a flaw in it
