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The radio battery "Malachite" from the beginning of 1957 produced an experimental series of the Voronezh plant "Electrosignal". The Malakhit radio receiver was developed on the basis of the Rodina-52 radio receiver and is designed to receive radio stations operating in the DV, SV and KV bands. The KB range is divided into two subranges. The receiver loudspeaker can be used to work in the broadcast radio network. In addition to receiving broadcasting stations, the radio receiver can also play a gramophone recording using an external electric player or gramophone with a pickup at a volume that is ample for a medium-sized room. A 1GD-6 loudspeaker is used in the radio receiver. The receiver used the following radio tubes: 1Ð1П, 1К1П, 1К1П, 1Б1П, 1Б1П, 2П1П (2 pieces). The nominal output power of the amplifier is 0.15 watts. A typical set of batteries for powering the Malachite receiver includes BSG-60-SB - 2 pcs. BIS-MVD-4 - 1 pc. This battery pack is designed for 800 hours of receiver operation on anode circuits and 600 hours on filament circuits in economy mode. In the absence of a commercially available battery pack, any batteries and rechargeable batteries can be used, providing anode voltage of 90 V, filament voltage of 1.2 V, grid voltage of 9 V with the help of attached pad. The dimensions of the Malachite radio receiver are 450 x 310 x 225 mm. Its mass is 12.5 kg.