... Where should a future electronics engineer start, what direction should he choose? Computers, televisions, video cameras?... But, given their colossal complexity and specificity, this is a dubious task! True, you can “sculpt” entire systems from ready-made computer boards. But where is the special creativity here? Yes, and microcircuits of a high level of integration, believe me, can do little to help a radio amateur develop the ability to “read” any circuits... There is a need for such an area, such a direction of electronics, which, while ensuring the accumulation of invaluable experience in design, would have and independent value. Such an area exists - the creation of highly sensitive (both short-wave and all-wave) receivers, based on the modern professional ideology of creating such equipment. From the basics of electronics and radio engineering - to a modern highly sensitive superheterodyne receiver with double frequency conversion and upper first IF... Equipped with a highly efficient digital tuning scale - that's what this book is all about! Those who want to independently manufacture and debug a world-class receiver - this book is for you!