After like 20 years of not being in school I've been "forced" to actually study again. I'm gonna take the test to get an amateur radio license which you have to have in order to operate on the 1,3GHz frequency that my video gear use.
The test is about 40 questions on electronics, ohms, watts and rules and regulations around radio etc. Since I don't have this knowledge from before (took economics in school) it's a whole new area for me. I'm not too sure I'm gonna pass, but I'll give it a shot.
If you live in Sweden and want to take the test the browse to SSA - Sveriges Sändareamatörer for more info on how to contact your local radio club.