Portable two-cassette radio tape recorder "Proton-311-stereo".

Cassette radio tape recorders, portable.DomesticSince the beginning of 1987, the Proton-311-stereo portable radio tape recorder has been produced by the Proton Kharkov radio plant. The two-cassette radio tape recorder (since 1988 "Proton RM-311S", later also "Proton RMD-311S") is designed to receive in the following ranges: DV, SV and VHF. With its help, you can record phonograms on magnetic tape, followed by playback. The radio tape recorder provides re-recording of phonograms using the second tape recorder panel. The speakers can be removed and spread out to expand the stereo effect. The ML has an ARUZ system, auto-stop when a tape breaks or ends in a cassette, the ability to connect stereo telephones. Power supply from the mains or 8 elements 343. CV speed 4.76 cm / s; detonation coefficient 0.35%, signal-to-noise ratio -46 dB; frequency range of the AM path 315 ... 3150, FM 250..10000, magnetic recording 63 ... 10000 Hz; sensitivity in the range of DV 2.2, SV 0.8, FM 0.05 mV / m; maximum output power 2x1.8 W; dimensions of ML 593x140x134 mm; weight 3.9 kg. The price is 400 rubles. Since 1989, the plant has been producing the Proton RM-211C radio tape recorder, almost a complete analogue of the described radio tape recorder. Until the end of the year, the production of the Proton RM-311C radio tape recorder continued.