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The Crosley F-100 battery portable vacuum tube radio has been produced since 1953 by the Crosley Radio Corporation, USA.
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Superheterodyne on 4 radio tubes.
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AM range 550 ... 1600 kHz.
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IF 455 kHz.
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Built-in ferrite antenna.
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Powered by a 1.5 volt heater battery and a 75 volt anode battery.
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The batteries were sufficient for over 100 hours of operation.
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Speaker diameter 10.2 cm. Maximum output power 180 mW.
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The range of reproducible sound frequencies is 120 ... 4000 Hz.
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The receiver had a built-in mechanical clock - a timer for showing the current time, using it as an alarm clock and for turning on the radio at a preset time for 5 minutes.
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