The R-310 “Dozor” radio receiver has been produced since 1954. Place of production – Kharkov Radio Plant Nr. 158 USSR.
Designed for direction finding. Mains and battery powered. The range of received frequencies is 1.5 – 25.0 MHz. Superheterodyne with double frequency conversion. The radio receiver is made on 16 lamps of an economical series of the 2Zh27L type. The R-310M “Dozor-M” radio receiver of later releases does not have a lamp with the number according to scheme 13, which acts as a detector for automatic sensitivity adjustment, the lamp is replaced by a semiconductor diode.
The radio receiver is powered through a removable power supply unit, consisting of a stabilized rectifier and a vibration transducer, which allows using as power sources: – AC 127 and 220 volts; – DC sources with a voltage of 2.5 and 5 volts. In addition, the package includes an adapter box for powering the anode and filament circuits directly from the batteries at the following voltages: the anode battery voltage is 120 volts, the glow battery voltage is 2.5 volts, and the bias battery voltage is 24 volts.
The weight of the radio with power supply and shock absorbers does not exceed 66.5 kg. The complete set of the radio receiver is placed in one stowage box, with the exception of batteries, which are packed in tare boxes. The weight of the stowage box with all the property does not exceed 105 kg.