Portable transistor radio receiver "Quartz-407".
Portable radio receivers and radios on p / p.DomesticSince 1977, the portable transistor radio receiver "Quartz-407" has been producing the Kyshtym radio plant. The radio receiver is based on the Quartz-404 model and is practically similar to it. It is designed to receive programs of radio broadcasting stations operating in the ranges DV 150 ... 408 kHz and SV 525 ... 1605 kHz. Reception is performed on a magnetic or external antenna. The sensitivity to the magnetic antenna is 3.0 mV / m in the range of DV and 1.0 mV / m in the MW. Selectivity at a detuning of ± 10 kHz - 20 dB in the LW range and 16 dB in MW, the attenuation of the mirror channel is 20 dB. The AGC system provides a change in the signal voltage at the output of the receiver by no more than 10 dB when the input voltage changes by 26 dB. Volume control range 40 dB. The range of sound frequencies reproduced by the loudspeaker is 450 ... 3150 Hz. Average sound pressure 0.15 N / m2. Rated output power 100 mW. Powered by "Krona" battery or "7D-0.1" battery. The performance of the radio is maintained when the voltage drops to 5 volts. The dimensions of the radio are 170x100x40 mm, its weight is 480 grams without a battery. The price of the model is 32 rubles 20 kopecks.
