Portable cassette recorder "Sputnik-404".
Cassette tape recorders, portable.The portable cassette recorder "Sputnik-404" has been produced since 1981 by the Kharkov radio plant "Proton". The tape recorder is designed for recording and reproduction of phonograms in stationary conditions and in motion. It differs from tape recorders of this class by the presence of a built-in electret microphone and ARUZ, increased output power, the possibility of sound recording control and one more tape speed. The tape recorder is made on semiconductor devices and one integrated circuit. 6 A-343 elements are enough for continuous operation of the tape recorder for 10 hours. The tape recorder can operate from a 127 or 220 V network, through a remote power supply. Specifications: Belt speed 4.76 and 2.38 cm / s. Rated output power when operating on the mains 1.2 W, when operating on batteries 0.8 W. The band of reproducible frequencies on the LV is 63 ... 10000 Hz. Knock coefficient at a speed of 4.76 - ± 0.4%, 2.38 - ± 1.5%. The relative noise level is -42 dB. Harmonic distortion at the line output is 2%, at the loudspeaker 5%. The dimensions of the tape recorder are 255x175x80 mm. Weight with battery 2 kg. There were at least two options for the external design of the tape recorder.
