This book tells you how to build a simple two-lamp radio yourself with AC mains power of 120 or 220 volts. The circuit and design are selected so that the receiver requires the smallest number of purchased parts, is easy to manufacture and set up. The receiver provides reliable and stable reception of local and most powerful nonresident broadcasting stations on a dynamic loudspeaker. The receiver has fixed settings on three radios, which brings it closer to the usual broadcast point, but with three broadcast programs instead of one. For high school.