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The tape recorder-prefix "Radio Engineering MP-7301-stereo" was produced since 1989 by the Riga Radio Plant named after AS Popov. Stereo tape recorder-prefix '' Radiotechnika MP-7301-stereo '' is designed to record and play sound on magnetic tapes of type Fe2O3 or CrO2, placed in compact cassettes. The MP allows recording from a microphone (recommended by IEC-11SN), an electric phone, a TV, a receiver, a tuner, an electric player, another tape recorder, and from a broadcasting line, directly, and via UCU. Optimal working conditions of the MP and the achievement of maximum performance are ensured when working together with the blocks of the Radiotechnika complexes. The tape recorder has a key switch for operating modes, a luminescent indicator of recording and playback levels with an electronic tape consumption counter, a separate recording level control channel, an active noise reduction system, a tape type switch. MP also has the following auxiliary devices and functions performed: The ability to temporarily stop the tape. Device for quick shutdown of the recording source. Automatic stop at the end of the tape. The ability to connect stereo phones (recommended type TDS-7). The device "memory" in the tape flow meter. The main characteristics of the MP: The nominal speed of the magnetic tape is 4.76 cm / s. The speed deviation of the magnetic tape from the nominal value is no more than ± 1.9%. Knock factor no more than ± 0.19%. The operating frequency range at the linear output is no longer 40 ... 14000 Hz. The relative level of noise and interference in the recording-playback channel with the noise reduction system turned on is no more than 60 dB. The relative level of penetration from one stereo channel to another at a frequency of 1000 Hz is not more than 26 dB. The relative level of erasure is 60 dB. The output voltage of the linear output is 500 mV. The nominal emf of the signal source at the microphone input is 0.2 mV. The minimum EMF of the universal input is 0.2 V. The minimum output voltage for recording from the broadcasting line is 10 V. The power consumption is 15 W.MP dimensions - 430x82x360 mm. Weight unpacked 6.9 kg, pack 8.5 kg.