Special wire tape recorder '' MN-61 ''.
Reel-to-reel tape recorders, stationary.Reel-to-reel tape recorders, stationarySince the beginning of 1961, the special wire transistor tape recorder "MN-61" has been produced by the Vilnius plant "Vilma" and the Rybinsk instrument-making plant. The tape recorder is intended for recording and reproducing speech from a receiver, lines and a microphone in airfield conditions or combat units of the Air Force, as well as for playing back recordings made on an MC-61 aircraft tape recorder. The sound carrier is a special wire of the EI-708A or EI-708 type. Duration of continuous recording on a cassette ~ 5.5 hours. The sound carrier rewind time is about 35 minutes. The irregularity of the frequency response at a frequency of 1000 Hz is not worse than 4 dB, when the input signal changes from 10 to 70 V from the input of the radio receiver. Uneven frequency response in the frequency range 300 ... 3000 Hz when the tone controls are set in the middle position, no more than 10 dB. The dynamic range is not less than 30 dB. The nonlinear distortion factor of the recording / playback path is about 10% at a frequency of 1000 Hz. The frequency of the current of erasure and bias is 20 KHz. The output voltage on the 1GD-18 loudspeaker is 1.5 V, on the TA-56M telephones 1.8 V, on the same, but high-impedance (3.2 kOhm) 20 V. The range of tone control is not less than 5 dB. In the event of a break or end of the sound carrier during recording, a voltage is issued to start the backup tape recorder. The tape recorder has an auto-start device that automatically turns off the tape recorder when the signal at the input ends and automatically turns on when a signal appears during recording. Power supply from an alternating current with a frequency of 50 Hz with a voltage of 110, 127, 220 V. Power consumption 75 W. The dimensions of the tape recorder are 326x241x236 mm. Weight 12 kg.
