Rudolph Hell, born 19 December 1901, died 11 March 2002 was a German Inventor and electrical engineer. In 1925 he began inventing the Hellschriber which at the time ran through cable lines and is the predecessor to the Dot Matrix printer. In 1929 he received a patent for the Hellschriber system.
1930’s is when it began being used for news wire services and continued up to the 1980’s. The Germans used it sometimes during WW2 in conjunction with the German Enigma machine for land based communications.
Rudolph Hell … (Click Here)
Hellschriber … (Click Here)
QST Article April 1999 … (Click Here)