Radio Engineering Chains and Signals . Research of basic radio nonlinear devices in Multisim environment" edited by B. N. Romanova is an indispensable work for students, graduate students and practicing engineers interested in radio engineering and electronics. This edition gathers knowledge that will help the reader to better understand the principles of operation of radio circuits and signals, as well as to master practical skills with Multisim software, widely used for modeling electronic circuits. The book offers the reader a unique combination of theory and practice. It examines basic radio non-linear devices such as diodes, transistors and amplifiers, as well as their application in various circuits. The author's team focuses on how these devices interact with each other and how their characteristics affect the work of the entire system. This makes the book especially valuable for those who want not only to learn the theoretical aspects, but also to learn how to apply the knowledge gained in practice. Who is this book intended for? First of all, it will be useful for technical students studying radio engineering and electronics . However, interest in it can be shown by more experienced specialists who want to update their knowledge or master new tools for the design and analysis of radio engineering systems. If you are passionate about electronics, want to understand the complex issues of designing radio devices or just looking for a practical guide to working with Multisim, this book will be a real find for you. The topics raised in the book cover a wide range of topics, ranging from basic radio engineering to complex models of nonlinear devices. The reader will learn about the principles of operation of various radio engineering circuits, their characteristics and methods of analysis. Particular attention is paid to modeling in the Multisim environment, which allows not only to visualize theoretical knowledge, but also to see in practice how various elements work in real conditions. This makes the book relevant in light of current trends in learning and design, where practical skills become as important as theoretical knowledge. The style of the authors is characterized by accessibility and clarity of presentation. They strive to make complex concepts understandable even for beginners, which makes the book ideal for self-learning. In addition, the text uses examples and tasks that help to consolidate the material studied. In this regard, the work of Romanov and his colleagues resembles other well-known publications in the field of radio engineering, such as Electronic Circuits: Design and Analysis or Fundamentals of Radio Engineering, but at the same time offers a unique approach to learning with a focus on practical application. The book "Radio Engineering Chains and Signals" is not just a textbook, but a real guide to the world of radio engineering, which will help the reader not only to master the basic principles, but also to learn how to apply them in real projects. If you are looking for high-quality and up-to-date guidance on radio equipment and want to master Multisim, this publication will become your reliable partner in training and professional activities. Do not miss the opportunity to immerse yourself in the fascinating world of radio engineering with a book that opens new horizons and expands your knowledge in this exciting field.