Or OC RAFP at Sleepy-On-Ouse in 1984, insisted that he briefs me on (sad to say) CB Radio, and did I know just how far it could transmit etc etc, when I said I had a good idea how far, he asked me, rather sarcastically, what I knew about Radio's.
When I told him (and it was all on my application form in his sticky little mitts) that I was L Eng Tech AC/AR by trade (That's someone who fixes aircraft radios (including proper HF one's) for a living, he mumbled something inaudible and told me to go.
I suppose the reading machine was out for a walk that afternoon.
How do you get the barrier to go up....