The Radio Engineering Handbook is designed for a very wide range of readers and contains materials of a calculated nature (formulas, graphs, tables, nomograms) in the main sections of radio engineering. The directory includes a large number of references to the calculations necessary for all employees of the radio engineering specialty: industrial and operational engineers, employees of research institutes, students of technical colleges, technicians of various qualifications, signalmen of the Soviet Army, workers of repair and broadcasting networks, trained radio amateurs, etc.