so ive been a General for about three years now and i keep putting off the Extra exam because honestly the math side of things intimidates me a bit. like i passed the General fine but i remember seeing some of the Extra practice questions and there was stuff about transmission line calculations and filter design that just looked like a whole different world compared to what i was used to.

my main question i guess is how much of the actual advanced theory do you really need to understand vs just memorizing the question pool. i know some people just grind the pool and pass but i feel like if im gonna bother at all i want to actually understand what im doing. is there a good resource that explains the theory behind the harder stuff without being a textbook from 1987

also does the Extra actually open up anything useful operating wise or is it mostly just the extra HF spectrum on the low end of the bands

the theory isnt as bad as it looks at first honestly. yeah there's some filter stuff and the odd smith chart question but if you sit down with the ARRL Extra Class License Manual it walks through all of it in plain english. i was dreading the impedance matching section and it turned out to be like two evenings of reading before it clicked.

as for memorizing vs understanding, i'd say do both. understand the concepts well enough that you can sanity check your memorized answers, because some of the questions are written to trip you up if you're just pattern matching. the question pool is public so you can absolutely pass on memorization alone but you'll probably retain none of it which is kind of a waste.

the privileges are real though. getting into the CW portions of 40 and 80 especially is worth it if you do any contesting or DX work, a lot of the rare stuff sits right down there and as a General you're just locked out watching

I upgraded to Extra last spring and honestly the exam was easier than I expected after using HamStudy for a few weeks. the harder theory questions like the stuff on op-amp circuits and oscillator design I just made sure I understood the basic concept behind each one rather than brute forcing the answer. took me maybe 6 weeks of casual studying.

the band privileges were the main reason I did it too. that little sliver on 75 meters where a lot of the nets I wanted to join were operating, I could hear them fine as a General but couldnt check in. kind of annoying. solved that problem immediately after passing so yeah worth it for that alone if nothing else