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The radio receiver "R-154-2" (Molybdenum) was produced since 1960 by the Omsk Kozitsky radio factory. Block RPU is intended for short-wave noise-proof radio communication on long-distance radio links. RPU receives telephone and telegraph signals, as well as recording telegraph signals using direct-printing telegraph devices. RPU allows you to simultaneously receive 2 telegraph texts and one telephone conversation. The frequency range is 1 ... 12 MHz. The subranges 3. The sensitivity in the telephone mode is 10 µV, the telegraph is 2 µV. Power supply from alternating current network 127 or 220 V or from sources of direct current 160 and 13 V. Dimensions of RPU 690x630x480 mm Weight 100 kg. In 1963, the RPU was slightly modernized and became known as the "P-154-2M".