Since 1981, the portable VHF-FM radio "Junior" has been produced by the Perm plant ADS.
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The radio receiver is similar in electrical circuit and design to the later receivers of the same plant "Iren-401" and "Iren-301".
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In the magazine Radio No. 6 for 1987 in the description of the Iren-401 receiver it was written: In recent years, interest in pocket radios has increased.
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Small size and weight, makes them companions of tourists, lovers of walks and summer residents.
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Many will appreciate the small receiver Iren-401.
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This is the first serial radio receiver in the 65.8 ... 74 MHz range.
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Pay attention to the word "first".
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The "Junior" radio receiver operates in the 65.8 ... 73 MHz range.
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IF 10.7 MHz.
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The maximum sensitivity is 10 μV, the real one is 20 μV.
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Single signal selectivity of 16 dB.
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Image channel selectivity 26 dB.
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Rated output power 70, maximum 100 mW.
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The range of reproducible frequencies is 450 ... 3500 Hz.
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Powered by Korund battery.
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Quiescent current 25 mA.
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Receiver dimensions 115x65x30 mm.
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Weight with battery 170 grams.
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The initial design of the radio receiver for the Chamber of Commerce and approval for production is shown below (right radio receiver), in the production process as in photo # 2 or as in the "Iren" radio receivers.
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