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The Orel-306-stereo and Orel-206-stereo set-top boxes have been produced by the Dnieper Machine-Building Plant since 1977 and 1982.
The models are the same in design, electrical circuit and characteristics.
Both MPs are designed for recording phonograms and their subsequent playback through an external CCU with speakers and stereo phones.
In both MP there is: a noise reduction device ШП;
tape consumption counter;
dial level indicators;
input switch;
Pause button
hitchhiking, triggered by the end of the magnetic tape and the failure of the cartridge.
Food from an electric network.
Belt speed 4.76 cm / s.
Knock coefficient ± 0.3%.
The working range of sound frequencies is 63 ... 12500 Hz.
The relative level of interference in the mode: recording -46 dB, playback -48 dB.
Power consumption 10 watts.
Dimensions of any MP - 416x202x132 mm.
Weight is 6 kg.
The price is 375 rubles.
When the USSR government decided to produce civilian products (conversion) at the Zaporizhzhya "Spring" at the defense plants, they took the finished development and, after finalizing the scheme, released the Orel-206 MP.
After a while, GOST was tightened according to the parameters of household appliances, and after processing the circuit to improve the frequency response from the low frequencies from 63 Hz to 40 Hz, they began to produce the Orel-306 MP.