The textbook gives students an opportunity to go into the fundamentals of radio electronics and radio engineering: signals, spectrums, linear and non-linear devices, etc. The first part of the book is devoted to fundamentals of electrical engineering; it explains how to make design of networks with direct and alternating voltage sources. The second part is said about the simplest resonant circuits; spectrum of signals; transient processes in circuits; diodes, transistors and devices, based on these elements. The third part contains tasks and exercises for class- and homework, tests for...