Chapter 3: Analog Radio Circuits #

The parts from Chapter 1 and the AC math from Chapter 2 come together here, in the circuits that do a radio’s analog work. Most use only a handful of components.

Read those parts one at a time, and a schematic of a filter, amplifier, power supply, or oscillator tells you what the whole circuit will do. It often shows why one might distort, drift, or break into oscillation, too.