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Since 1958, the radio tube network "Strela" has produced the Voronezh Radio Plant. Radio class 4, Strela, is a three-lamp superheterodyne, designed to receive radio station programs in the long and medium wave bands, as well as to listen to recording by external pickup. The sensitivity of the receiver, with an output power of 0.5 W and a sound pressure of 3.5 bar, is not worse than 400 µV. The adjacent channel selectivity with ± 10 kHz detuning is 16 dB. IF = 465 kHz. Band of reproducible sound frequencies 150 ... 5000 Hz with a non-linear distortion factor of 5%. Powered by AC 127/220 V. Power consumption 40 watts. The receiver used radio tubes 6I1P (2), 6P14P (1) and 6TS4P (1). The 6C4P lamp used in the rectifier since 1960 has been replaced by D7V diodes. The model used elliptical dynamic loudspeaker 1GD-9. The power supply is assembled on a half-wave scheme, with a power transformer. The signal detector and the AGC system are made on a DG-Ts6 diode. A 3-key switch turns the receiver on and off and switches bands. Simultaneous pressing of the keys DV, SV include the adapter. This closes the input coils, eliminating interference with the recording if the receiver is tuned to a station. The dimensions of the receiver are 270x210x160 mm. Weight 4.2 kg. The ease of operation of the receiver with a good external design, made it massive and cheap for its time. The price of the receiver is 281 rubles 50 kopecks.