HF radio receiver R-311 “Omega”- Soviet shortwave radio for military use with self-powered, manufactured from 1954 until the mid-1970s. One of the most common tube connected receivers in the Armed Forces of the USSR. Intended for range 1 to 15 MHz in five scales. Receives AM, CW.
Modulation: AM, CW.
Frequency range: 200 – 1500 kHz, 2 – 18.1 MHz.
27V DC line supply or inverter type U-600.
10 fix frequencies and cable remote control possibility.
Prototype – USA company COLLINS transmitter AN/ART-13.
HF Radio receiver Krot, developed in 1947 based on the ideas of designs captured German radio Koeln E 52b, Telefunken T9K39 etc. Produced from 1948 to 1952 at the Kharkov radio factory number 158. HF Radio receiver Krot-M, was produced from 1953 to 1960.
Adjustment range frequencies. 1.5 – 24 MHz.
Radio receiver RPS (Radio Receiver Aircraft) was placed on transport aviation aircraft. It used also for terrestrial communication systems.
Band of received frequency: 143-600 kHz, 2-24 MHz.
The sensitivity of the HF: AM 4mkV, SW 1.5 uV.
Bandwidth: 13.5 kHz, 11 kHz, 5 kHz, 3 kHz, 0.5 kHz.
The receiver is powered by a mains voltage of 115 VAC at a frequency of 400 Hz.
Power consumption 70 watts.
Dimensions: 508 x 327 x 303 mm.
Weight with rectifier: 26.5 kg.
Receiver is assembled on superheterodyne circuit 11 lamps.