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The toy "Young Signalman" since I-quarter 1991 was produced by the First Moscow Experimental Plant "Promsvyaz".
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The toy "Young Signalman" is designed to study the Morse code using one of the two devices, as well as to conduct two-way telegraph communication using two devices and a two-wire line.
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The length of the two-wire line is 15 meters.
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Each device is powered by a 3336 battery with a voltage of 4.5 volts.
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Tone of reception and transmission of 1000 Hz.
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The electrical circuit of the toy allows you to organize work by telegraph in a network of several devices.
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