Army radio `` R-311 '' (Omega).
Receiving and transmitting radio equipment.Army radio "R-311" (Omega) has been produced since 1955. Designed to receive telegraph and telephone signals in the frequency range from 1 to 20 MHz. It is made according to the superheterodyne circuit on eight lamps of the 2Zh27L type. Main characteristics: Superheterodyne with one frequency conversion. Number of sub-bands - 5. Operating modes AM, CW. Frequency display - mechanical scale. Sensitivity (AM / CW) 7.5 / 3 μV. Weakening the mirror channel at least 40 times. Bandwidth (at the level of 0.5 / 0.01) 300 ... 4000 Hz / 3.5 ... 16 KHz. The strip adjustment is smooth. Power source - 2NKP24 battery, VP-3M2 vibration transducer, BAS-G-80 battery. The consumed current through the anode circuits 14 mA, through the incandescent circuits 0.52 A (without lighting); 1.1 A (with scale illumination). Dimensions and weight 520x475x335 mm; 21 kg. The receiver is described in sufficient detail on the Internet.
