The children's telegraph apparatus "Zirochka" (Zvezdochka), presumably since 1976, has been producing the Kiev Order of the Red Banner of Labor, the Plant of Electronic Computing and Control Machines.
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With the help of two such devices, it was possible to keep telegraph communication on a three-wire line.
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When receiving telegraph signs, the electric motor pulled the paper tape to the left of the apparatus, and the electromagnet pressed against the paper tape and the ballpoint pen left a short (dot) or long (dash) mark on the tape.
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It was necessary to read the message immediately, during the reception or after.
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The reverse transmission was carried out by the key, and the second receiving device repeated everything described above.
,86e6f450b8cc469628ba70bf2947b049
Telegraphs had a separate power switch or a telegraph key was used for this.
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There was a lever for changing the speed of the tape feed.
,86e6f450b8cc469628ba70bf2947b049
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