Introduction -- Calibration tools and generators for testing -- Components and hacking/modifying parts for radio circuits -- Building simple test oscillators and modulators -- Low-power tuned radio-frequency radios -- Transistor reflex radios -- Low-power regenerative radio -- Transistor reflex radios -- A low-power regenerative radio -- Superheterodyne radios -- Low-power superheterodyne radios -- Exotic or "off the wall" superheterodyne radios -- Inductor-less circuits -- Introduction to software-defined radios (SDRS) -- Oscillator circuits -- Mixer circuits and harmonic mixers -- Sampling theory and sampling mixers -- In-phase and quadrature (IQ) signals -- Intermediate-frequency circuits -- Detector/automatic volume control circuits -- Amplifier circuits -- Resonant circuits -- Image rejection -- Noise -- Learning by doing.