The topic of this collection is very wide - here are articles on amplification technology and electroacoustics, a description of both complete developments and individual nodes of radio receiving and television devices. Much attention is paid to measuring instruments, without which the manufacture and installation of modern electronic devices is unthinkable. Radio athletes are not forgotten either - the collection describes equipment for fans of short and ultra-short waves, sports radio direction finding ("fox hunting") and for other areas of radio sports.