Robert Denk

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Robert Denk (* 1916 ; † 1953 ) was a German electrician and is said to have invented a tube-free radio in 1948 . However, the reports of this invention are often questioned.

Life

After the Second World War , Denk lived in Witzenhausen near Kassel . During this time, after about 400 attempts, he is said to have succeeded in constructing a tube-less radio receiver. Before his suicide in 1953, however, he is said to have destroyed both the prototype and the associated documents. Denk's biography and invention was presented to the public in a contribution by Hessischer Rundfunk . However, it is now heavily doubted that he actually made a groundbreaking invention; the reports on his radio are sometimes referred to as hoaxes . Less critical voices at least state: "Denk's amplifier remained unexplained and was forgotten."

Denk allegedly fell victim to the businessman Willy Bürkle , who initially promised him a pension for his invention, but then announced that the radio was not working. In fact, Bürkle had the radio factory Lennartz & Boucke in Tübingen install radios in ceramic vases produced on the Gutenhalde , which were then sold under the Rondo and Ponti brands. A Spiegel report from 1950 also mentions a project by Bürkel, which concerned a tube-less radio set, but which no longer came about after the entrepreneur went bankrupt. However, Denk's name is not mentioned in this article.

Web links

Individual evidence

  1. ↑ mankenberg.de
  2. ↑ hr-online.de
  3. ↑ radiomuseum.org
  4. ↑ A&D magazine: 60 years of automation technology, part 1 (PDF, page 3)
  5. ↑ Private homepage for the biography of Denk
  6. ↑ Der Spiegel 31/1950
personal data
SURNAME Think Robert
BRIEF DESCRIPTION German electrician and inventor
DATE OF BIRTH 1916
DATE OF DEATH 1953