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The radio detector Vol'na has been produced since 1948 by the Tomsk Measuring Instrument Plant, as well as the Volna telephone and telegraph equipment factory in the Moscow Region and the Kiev Radio Plant. The receiver is designed to receive local and powerful long-distance broadcasting stations. The radio wave band extends from 300 to 2000 meters. The adjustment from wave to wave is made by a device of a rheostat type. The detector in the radio is removable. With a radio receiver, it was recommended to use electromagnetic or piezoelectric headphones. The dimensions of the radio "Wave" 145h122h86 millimeters. Weight 550 grams.