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Updated: May 6, 2025
Ltd. to produce, with the close co-operation of the B.B.C. Research Department, the Marconi-Stille machine which was put into use in 1934. The tape width was reduced to 3 mm and the thickness to only 0.08 of a millimetre.
Historical note on the Marconi-Stille steel tape recording machine. At the beginning of the century Professor Poulsen, one of radio's earliest pioneers, discovered that a magnetic impression could be made on a moving length of wire which remained on the wire even after it had been rolled up. He used his machine to record the Morse code only, that is magnetism 'on' and 'off'. In 1924 Dr.
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