From 1959 to 1985 radio receiver Volna-K was produced by the Petropavlovsk Radio Plant.
Volna-K is a special telephone and telegraph radio receiver for radio communications on coastal and long-distance vessels and as an auxiliary receiver in the Navy.
The receiver has 16 radio tubes and operates in 9 subbands, overlapping frequencies from 12 KHz to 23 MHz. The receiver has a control loudspeaker, headphone jacks. A double conversion of frequency and a step change of the passband of the second IF of 0.5, 1.5 and 6 KHz are applied. The sensitivity of the radio receiver depends on the ranges and lies in the range from 3 to 10 µV. Power supply from the AC mains or DC through the OP-120 converter. Receiver dimensions 350x410x420 mm. Weight 36 kg. There were six variants of the receiver: Volna-K, Volna-KT – tropical, Volna-K1, Volna-K1 – tropical, “Volna-K2 (the receiver body is made of aluminum alloy) and Volna-3”.
The following options for powering the radio receiver are provided:
– from an alternating current network with a voltage of 220, 127, 110 V with a frequency of 50 Hz;
– from a direct current network with a voltage of 220, 110 and 24 V through converters (for the option of power supply from a direct current network, a remote converter switch is provided in the radio receiver set.