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Since the beginning of 1965, the subscriber loudspeaker "Riga" has been produced in the Daugavpils prison OTs 78/3.
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This AG is one of the variants of the already described subscriber loudspeakers.
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AG type - 0.15GD III-3-6.
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The name "Riga" is abstract, it appeared in the products of OTs 78/3, then it disappeared.
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The subscriber loudspeaker "Riga" is intended for listening to programs transmitted over local wire radio broadcasting networks with a voltage of 30 volts.
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The range of sound frequencies reproduced by the loudspeaker is 1500 ... 5000 Hz.
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