Portable cassette recorder "Proton M-411".
Cassette tape recorders, portable.The portable cassette recorder "Proton M-411" has been produced by the Kharkov radio plant "Proton" since the 1st quarter of 1987. The 4th class tape recorder "Proton M-411" is assembled on transistors and microcircuits and is intended for recording or reproducing phonograms on magnetic tape A-4207-3B or similar in standard cassettes such as MK-60. Number of recording tracks 2. The speed of the tape feed is 4.76 cm / sec. CVL detonation - 0.4%. The range of sound frequencies effectively recorded and reproduced through the linear output is 63 ... 10000 Hz, the frequency range effectively reproduced by the internal loudspeaker 1GDSH-6 is not more than 200 ... 5000 Hz. Power supply is universal, from a 220 volt network or from 4 A-343 elements. The nominal output power of the amplifier is 0.5 W. Power consumption from the mains is 8 W. The dimensions of the tape recorder are 157x254x55 mm, weight is 1.3 kg. Includes power supply unit UVIP-1. The price of the model is 120 rubles. Until 1988, tape recorders were referred to as "Proton-411".
