Tape recorder '' Volna ''.
Tape recorders and radio tape recorders.The "Volna" tape recorder has been produced by the Moscow plant "Detail" since the fall of 1954. The Volna tape recorder combined the simplicity of design and electrical circuitry, had a number of advantages and disadvantages. The attachment did not have an electric motor; the EPU disk of the apparatus was used here, with which the attachment was operated. The circuit of the model contained one radio tube, which served as an erasure and bias generator, a recording correcting amplifier, and a signal preamplifier. All other functions were performed by the basic device (household radio or bass amplifier) to which the set-top box was connected through a special connector. Such a connector could be installed on the device itself, it was attached to the set-top box, and some serial devices already had similar connectors, for example, the Estonia-55, Kazan, etc. and by rearranging the coils. The range of recorded and reproducible frequencies at 78 rpm is 100 ... 7000 Hz, at 33 rpm 100 ... 3000 Hz. The speed of pulling the magnetic tape was 19.8 and 9.4 cm / sec, respectively. The set-top box did not have a power supply unit, therefore, through the connector, it received the necessary voltages from the basic device, consuming about 1.5 watts of power. There were no rewind modes in the console, although in principle it was carried out, but in a very clever way. The "Volna" tape recorder cost 300 rubles.
