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The "Regency TR-1" portable transistor radio receiver has been produced since the fall of 1954 by the American company "Pocket Radio", Regency (I.D.E.A.).
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It is considered the first transistor receiver in the world, although the Japanese company Tokyo Tsushin Kogyo, later Sony, also prepared the Sony TR-5 model for release in the fall of 1954, but it went into series only in the fall of 1955 under the name
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"Sony TR-55".
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"Regency TR-1" is a superheterodyne with four transistors.
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AM range - 540 ... 1600 kHz.
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IF - 262 kHz.
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Power supply - 22.5 volt battery.
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Maximum output power 100 mW.
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The range of reproducible sound frequencies is 450 ... 2500 Hz.
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Receiver dimensions 76x127x32 mm.
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Weight 300 grams.
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Due to poor selectivity in the mirror channel, noise of transistors, low volume outside the city and poor sound quality, the radio receiver was modernized several times, which led to a noticeable improvement in its consumer qualities.
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