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Subscriber loudspeaker "Leningrad" was produced from I quarter of 1990 in the Leningrad PO Box 537. The small-sized souvenir subscriber loudspeaker is designed to work in radio broadcasting networks with a voltage of 30 V. The reproducible frequency range is 200 ... 4000 Hz. Dimensions 170x60x22 mm. Weight 350 g. Price 4 p.