That kind of advice would be very helpful for if you were streamed towards the sensor role, but would do you no good if you were streamed rotary crewman.
That is good advice from Shawtarce. Look at where the manning gaps are at the moment. Loadmasters (or whatever we are called today) are very short, especially rotary, whereas the Nimrod future is far from certain at present, given the drive for cuts.
Don't waste your time studying radar theory. There is a strong possibility you will never need it, and if you do, you can worry about it then.
Worry about being able to put one foot in front of the other, and keep going for as long as possible.