The attention of a wide circle of radio amateurs and specialists working in all sectors of the national economy and culture is attracted by all-Union exhibitions of radio amateurs-designers, which are the source of new creative thoughts, original technical solutions and many inventive and rationalization proposals. Continuing the popularization of the work of amateur radio designers, which began with the 12th All-Union Exhibition, DOSAAF Publishing House compiled a real collection of "Best Structures" based on the materials of the 14th exhibition, held in Moscow in October 1957, and the 15th exhibition, held in Riga in August 1958