RC;
Did my RT exam (JAA ORAL one) back in August. I also didn't know what to expect. I had read through CAP 413, however, I did my PPL over in the States, so was used to their use of RT, which is somewhat different to ours!!
Basically, if you're alright at the RT when you go out flying, you will be fine!
They give you a pre-planned flight with all the frequencies, and then just ask you to make ALL the radio calls you would normally make on that flight. They also throw in a few "extras" for you to tackle (ie MAYDAY calls, MATZ penetration, etc)
You will have no problems with the written test.
Hope this helps, and good luck !!
Jason
By the way, I got 90% but it will be easy to beat this!
[This message has been edited by Jason2000 (edited 25 February 2001).]