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The mine detector toy has been produced since 1974.
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Judging by the details, 1974, by the battery, the middle or late 60s.
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While there is no data, let it be 1974. The circuit is assembled on MP-39 transistors.
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Works on the coincidence of the frequencies of two generators, one circuit of which is in the housing, the other in the mine detector coil.
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The diameter of the outer coil is 16 cm. The bar is 60 cm, according to the child's height 6-7 years.
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Power supply - KBS battery.
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Earphone.
The toy is designed to search for metal products underground at shallow depths.
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