The author of the book is A. A. Shchekotikhin. The book "Radio Amateur Low-Frequency Amplifiers" by A. A. Shchekotikhin is a comprehensive guide to the design and construction of low-frequency amplifiers for amateur radio enthusiasts. The book covers the principles of low-frequency amplifier design, the characteristics of different types of amplifiers, and the selection of components and materials for building these amplifiers. It also provides practical advice on how to build and test these amplifiers, as well as tips for troubleshooting common problems that may arise during the building process. The book begins with an introduction to the basics of low-frequency amplifiers, including the principles of operation and the advantages and disadvantages of using them in amateur radio applications. The author then delves into the details of amplifier design, discussing the various components and their functions, such as the input and output stages, the power supply, and the control system. He also explains the importance of selecting the right components and materials for each stage of the amplifier, based on the desired frequency range and power output. One of the key themes of the book is the evolution of technology and the need for continuous learning and adaptation in order to stay current with the latest developments in the field.

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