This year LFK starts making sound recordings
using a tape recorder. The first machine is large and heavy, requiring
two men to move it. Therefore usually the machine stays in the
yard - in a bus - while a long cable stretches to a microphone
indoors. Want to hear your own voice? Why not, just walk to the
bus... The first tapes must have been used ones, from radio, when
handed over to the folklorists. Still all this was a giant step
forward compared to phonograph
With time the technology was improved, both recorders and buses
become smaller, the compact cassettes appear (the last reel tape
was recorded in 1979, although some accidental recording
can also be found later). Some examples of the machines used.
Andrejs Krumins Jauza 5, lamp recorder

Kometa 201 of the Folklore Institute, two motor lamp
recorder with electromechanical control

Smaller size, the same principle - "Reporter"

Iz-302 of the Folklore Department, simple but reliable
cassette recorder

But the machines are not the main point of research, though. Based on
the thesis
that folklore is a living social phenomenon soviet bureaucrats
invented modern folklore a decade before American
folklorists discovered it, with the only difference that this was
labelled "soviet" and had to bear fixed ideas.
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