I must admit that I came to this book somewhat math challenged.I tend to be more interested in a historical perspective. But having said that, Mr. Quan has written a book that somehow manages to cover all bases here.Using the AM radio as a context, starting with the most basic simple circuits, then building upon each concept, he manages to cover the history and development of the major types of circuits used for AM radio reception, and the math and theory behind each circuit building block, show plans and schematics with detailed parts lists and sources to not only construct several types of AM radios, but also to make your own test oscillators and modulators for developing and testing circuits under construction. He also has a section covering the details of other equipment needed, and some inexpensive ways to obtain it, to equip your "radio electronics experimentation lab".He goes on to discuss improvements to circuits and trade-offs in further development between performance, cost and power consumption giving you the chance to improve designs previously constructed and measure the improvements.All this is presented in a well illustrated, intuitive, entertaining, easy to grasp form, that actually manages to give a reasonably complete analog electronics education by covering the various building blocks of the humble AM transistor radio including power supplies, oscillators and amplifiers as well as everything else specific to an AM radio.If you spend any time with this book you will not only learn to build and design your own AM radio circuits, but you will be well on your way to understanding a lot of the theory behind all analog electronic design. Well done !