I am currently trying to study for the fcc element 3 exam, but I really need a good refresher and basic radio circuit operation and design. I do have some basic electronics training as pertaining to aviation. I am studying with the fcc study guide but am having a hard time with some of the components that are called out in the study guide and I am not necessarily wanting to commit the answers to memory just to pass the test, I would like to learn and understand more about radio circuit theory and the components, I am wondering if someone knows of a good book that I can get that will give me a good basic understanding of radio operation and explain some of the terms used in the study guide as pertaining to the components, without having to have a degree in trigonometry, but with a good simple explanations that will help me understand the in's and out's of radio operation and make the study guide make more sense, I am not looking to be an expert in radio operation but I am looking to be a lot more knowledgible and have a good understanding of the how's and why's, I looked at amazon, but there is so much material to choose from I am not sure of which book to get, any help would be greatly appreciated. Thanks