Another tip: Don't just throw something in to try to impress them with your breadth of knowledge unless you are prepared to be questioned about it.
For example, if you have heard of 8.33 spacing or RVSM or Mode S but don't know a little more about them, then don't mention them as they will start you off into digging a rather deep hole. The interviewer will love the opportunity to 'explore the depth of your knowledge'!
All the other advice so far is sound. The best is to visit a local unit andbring that up, because you should be able to steer the interview towards things you learnt there.