While studying for my Ham radio license, I noticed that each practice exam contained a variety of subjects.  Some of the questions contained practical common sense items such as not climbing your antenna tower during a rain storm.

And of course, there was a section on rules and regulations for operating your Ham radio station and a section on general electronics.  And all of these I could deal with.  But, when it came to radio theory, I was somewhat lost.

For example, I had no idea what radio frequencies work best during a period of sun spots.  Or what causes a “Knife edge” reflection.  So, for these questions, I relied  strictly on memorizing the answers.

Who knows, maybe some day I will learn the radio theory.  But for right now, the focus is on passing the test.