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Army VHF radio "R-313M2" was produced in 1974 by the Berdsk radio plant. It is equipped with an upgraded version of the P-313M receiver and differs from the latter in a wider reception band (90 ... 428 MHz). It is intended for reception by ear of telephone signals from AM, FM and TLG, as well as for working with the panoramic display device "R-319". The frequency range of the receiver is divided into four sub-bands: I sub-band 100 ... 160 MHz, II sub-band 165 ... 231 MHz, III sub-band 231 ... 330 MHz, IV sub-band 330 ... 425 MHz. Radio sensitivity: in phone mode 4 µV; telegraph 2.5 mV. Intermediate frequencies: 33 and 4.5 MHz. Receiver power supply: from an alternating current network of 127 or 220 volts, using its own external power supply unit or from an on-board network of 26 V. Dimensions of a radio receiver 235x370x335 mm. Weight 19 kg.