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Short-wave radio "R-250" (AC-1, 2) produced since 1949. Designed to receive telephone and telegraph signals in the range from 1.5 to 25.5 MHz, divided into 12 sub-bands. Double frequency conversion. The sensitivity when taking TLF - 4 µV, TLG - 1.5 µV. Bandwidth adjustable from 1 to 12 kHz. Power supply via the power supply. Nominal sound output 0.5 watts. Dimensions at the receiver without stabilizers 650x450x460 mm. Weight 90 kg. Power supply dimensions - 495x330x340 mm. Weight 35 kg. For the Navy (Navy) receiver "R-250" was produced under the name "R-670" and the code designation "Rusalka". A more detailed description of the radio is on the Internet.