Portable stereo cassette tape recorders "Electronics-311-stereo" and "Electronics-311A-stereo".

Cassette tape recorders, portable.Portable stereo cassette tape recorders "Elektronika-311-stereo" and "Elektronika-311A-stereo", respectively, have been produced since 1977 and 1981 by the Novovoronezh plant "Aliot" and an unidentified plant in Ukraine. The tape recorders are the same in design, design, scheme and parameters. The tape recorder is designed for recording and playback of mono and stereo phonograms on standard cassettes such as MK-60 from any source of sound signal. The tape recorder provides tone control for high and low frequencies, automatic and manual adjustment of the recording level of all inputs, a temporary pause of the tape movement, erasing the recording, the ability to visual and sound control of the recording. For high-quality listening and expanding the stereo base, the device is equipped with two external speaker systems. The tape recorder was produced in 4 configuration options: 1. With a power supply unit and a microphone. 2. Without power supply unit and microphone. 3. With a microphone but without a power supply unit. 4. Without power supply unit and microphone. In the complete set 1, the price of the tape recorder was 289 rubles. The low-frequency power amplifier is assembled on transistors such as GT-703 or K174UN7 microcircuits. Technical characteristics of the tape recorder: speed of pulling the magnetic tape 4.76 cm / sec; rewinding time of MK-60 cassette - 2 minutes; number of working tracks - 4; power supply - 7 A-373 elements or 127/220 V power supply via power supply unit 12/10; power consumption from batteries 6 W, from the network 10 W; duration of continuous operation from a set of batteries about 20 hours; rated output power 2x0.4 W, for remote speakers 2x0.8 W; frequency range at the linear output - 63 ... 10000 Hz; on their own speakers 120 ... 10000 Hz, remote 100 ... 10000 Hz; detonation coefficient 0.3%. The dimensions of the tape recorder without external speakers are 350x285x95 mm. Weight without speakers - 4.6 kg.