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The sound generator "GRN-2" since 1987 produced the Vilnius plant RIP. The generator '' GRN-2 '' (Low-Frequency Amateur Generator 2nd Option) is intended for radio amateurs when setting up and adjusting low-frequency amplifying radio equipment. The generator produces signals of rectangular and sinusoidal shape in the range from 20 Hz to 20 kHz. The frequency range is divided into 4 subranges. Food from a network of 220 V. Power consumption is 5 W. The dimensions of the generator are 190x60x190 mm. Weight 1.1 kg. Price 35 rubles.