The book "Radionavigation: educational manual" by A. In. Grinkevich is a unique work that not only immerses the reader in the world of radio navigation technologies, but also serves as a reliable guide for students, engineers and anyone interested in modern navigation systems. This manual will be an indispensable assistant for those who want to understand the principles of radio navigation, its application in various fields and prospects for development. In his book, Grinkevich examines the basics of radio navigation, starting with historical aspects and ending with modern technologies. The reader will learn about the principles of radio signals operation, their distribution and processing, as well as about various methods of location. The author pays special attention to such topics as global positioning systems, radar and the use of radio navigation technologies in aviation and maritime affairs. Each chapter is filled with examples, illustrations and practical tasks, which makes the material accessible and understandable. This book will be especially interesting for students of technical specialties, as well as professionals working in the field of navigation, telecommunications and geoinformation systems. It is suitable for both beginners and those who already have experience in this field and want to update their knowledge. If you are looking for a tutorial that will help you not only to master the theory, but also to put it into practice, then “Radionavigation” will be an excellent choice. The topics raised in the book are relevant and important in light of the rapid development of technology. In the context of globalization and the growth of traffic flows, understanding of radio navigation systems becomes necessary to ensure the safety and efficiency of movement. Grinkevich emphasizes the importance of accuracy and reliability of navigation data, which makes the book especially valuable for professionals working in conditions of increased safety requirements. The style of the author is distinguished by clarity and logical presentation, which allows the reader to easily assimilate even the most complex concepts. Grinkevich uses an accessible language, avoiding overly technical terms, which makes his work understandable to a wide audience. In addition, the book contains practical tasks and questions for self-control, which contributes to a deeper assimilation of the material .. A. In. Grinkevich is an author who has already established himself in the field of scientific publications. His work covers a wide range of topics related to navigation and telecommunications. Readers familiar with his previous works will appreciate this manual, as it continues the tradition of high-quality and up-to-date presentation of scientific knowledge. If you are looking for a literature on radio navigation that combines theory and practice, then “Radio navigation: a tutorial” will be your reliable companion in studying this important area. The book will not only expand your knowledge, but also inspire new achievements in your career. Do not miss the opportunity to immerse yourself in the world of radio navigation and discover new horizons!