Mir 1987
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The "Mir" subscriber loudspeaker since the beginning of 1987 has been produced by the Khmelnitsky plant "Neva". Souvenir subscriber loudspeaker "Mir" is designed to work in a broadcasting network with a voltage of 30 V. Rated power is 0.15 W The frequency range of 250 ... 5000 Hz. Mass of the device 360 "‹"‹gr. Price 4 rubles.
Information from collection of Valery Khartchenko