About the book: 1971 / This book contains detailed descriptions, drawings and diagrams of homemade designs of various automatic weapons and devices on an electronic basis, necessary for schoolchildren participating in the all-Union military game "Zarnitsa", paramilitary campaigns and games in a pioneer camp. The book is intended for middle-aged and older students who are somewhat familiar with the basics of amateur radio. The industry does not produce devices similar to those described in the book; they must be made by yourself.