I think also that frequencies requiring only one decimal place are known as X channels, and those with two are Y channels.
As for the exams, I believe that the JAA ones were originally supposed to be the equivalent of A BA degree, as you were regarded as entering a profession and, as with most degrees, they are crammed full of ****e to give them some form of credibility as most of the core stuff you can learn in one year (I did the 5-minute degree myself - studied what most people remember 6 weeks afterwards!)
Phil