Paul Courson I was sorry to hear in a National Public Radio report that Stefan Kudelski has died. Count this ex-radio newsman among fans of his Nagra portable open-reel machines. Out of college, I ...

Stefan Kudelski didn't set out to make a sound recorder. He was interested in robotics, and in the 1950s, one of the ways to create robotic memory was to use magnetic tape. As a student, working with ...

Stefan Kudelski, the Polish engineer whose Nagra III portable tape recorder revolutionized Hollywood and documentary filmmaking, died last week at the age of 83. Unveiled in 1958, the 14-pound Nagra ...

NEW YORK — Stefan Kudelski — inventor of the first professional-quality portable tape recorder, which revolutionized Hollywood moviemaking and vastly expanded the reach of documentarians, independent ...

Replay: In the last three decades of the 20th century, when film was still the dominant medium, there was one piece of equipment that, close to being universal, was an essential piece of kit for the ...