Portable transistor voice recorder "Electron-52D".
Reel-to-reel tape recorders, portable.Reel-to-reel tape recorders, portableSince the beginning of 1968, the portable transistorized voice recorder "Electron-52D" has been produced by the Poltava EMZ, and later (1970) by the Kazan plant of radio components. The "Electron-52D" dictaphone was created on the basis of the "Tinico" company dictaphone and is intended for two-track recording and reproduction of speech information using magnetic tape. Listening to the recording is carried out by a TM-2M telephone or an additional amplifier with an acoustic system. The dictaphone is a very small pocket design and consists of a tape drive mechanism, a universal recording and playback amplifier. Power is supplied from two TsNK-0.45 batteries and one Krona battery. The speed of movement of the magnetic tape in the CVL is variable, depends on the winding of the tape on the reel and ranges from 3 to 9.5 cm / sec. Recording time when using magnetic tape type 10 is from 10 to 30 minutes. The working frequency range is 300 ... 3500 Hz at a lower speed and 200 ... 7000 Hz at a higher speed; by the end of the recording, the quality increases. The rated output power of the amplifier is 20 mW. Nonlinear distortion coefficient 15%, CVL detonation coefficient - 10%. The relative level of interference is -30 dB. The dimensions of the recorder are 165x70x50 mm, its weight is 0.5 kg. The dictaphone was prepared for release in the summer of 1967, but the first dictaphones were not released until January 1968.
