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Radio "Kvarts-401" since 1970 produced Kyshtym radio plant. Portable transistor radio '' Quartz-401 '' is designed to receive broadcasting stations in the bands DV and CB on the internal magnetic antenna. It is assembled on 7 transistors in a superheterodyne pattern. The real sensitivity in the ranges: DV - 1.2 mV / m, SV - 0.65 mV / m. Selectivity in the adjacent and mirror channels 26 ... 30 dB. Nominal output power on a 0.1GD-6 loudspeaker is not less than 100, maximum 180 mW. The range of reproduced sound frequencies is 450 ... 3000 Hz. Powered by a Krone battery or a 7D-0.1 battery. Resting current about 8 mA. Performance is maintained when the supply voltage drops to 4 volts. Duration of battery life Krona 30 hours, battery 12 hours. The dimensions of the receiver 170x98x40 mm, weight 500 grams. The receiver is equipped with a leather case with a shoulder strap for carrying. The price of the receiver is 39 rubles 48 kopecks, including the cost of the Krone battery.