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Since the beginning of 1957, the Volga network tube electronic microphone has been producing factory No. 205 named after N. Khrushchev of the Saratov CHX.
The compact lamp radiogramophone (electrophone) Volga is made in an oval cardboard box pasted with a peacock or dermatin.
Its dimensions are 364x315x150 mm.
The main components of the device are the same as in the Yubileiny radiophone, but a more advanced electric motor is installed.
The speaker used 1GD-9 loudspeaker mounted on the rear wall of the box.
In a three-stage ULF, 6N8S and 6P6S lamps were used.
To reduce distortion, the second and third cascades are covered by negative feedback.
Treble tone adjustment is done in the negative feedback circuit.
VLF rated power output 1 W, maximum 2 W.
The background level is -35 dB.
The band of reproduced sound frequencies is 100 ... 7000 Hz.
To power the amplifier of the microphone, a half-wave rectifier on a kenotron of type 6TS5S was used.
The weight of the radiophone is about 6 kg.
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