at the Grimeton radio station outside Varberg, Sweden. It is a prime example of pre-electronic radio technology and was added as a UNESCO's World Heritage Site list in 2004. Alexanderson was also instrumental in the development of television. The first television broadcast in the United States was received in 1927 at his GE Plot home at 1132 Adams Rd, Schenectady, N.Y. Alexanderson retired from General Electric in 1948. The inventor and engineer remained active to an advanced age. He continued television research as a consultant for the Radio Corporation of America filing his 321st patent application in 1955. Over his lifetime, Alexanderson received 345 US patents, the last filed in 1968 at age 89. He died in 1975 and was buried at Vale Cemetery in Schenectady, New York. Alexanderson is also mentioned in connection with the emergence of the patent system, that he was partially critical to. As the technology historian David Noble writes: Kidnapping incident In 1923, Alexanderson's son, Verner, was kidnapped. He was located after three days and returned to his family. Honors IEEE Medal of Honor from the Institute of Radio Engineers, now IEEE, (1919) IEEE Edison Medal from the American Institute of Electrical Engineers, now IEEE, (1944) Valdemar Poulsen Gold Medal from the (1947) National Inventors Hall of Fame induction (1983) Consumer Electronics Hall of Fame induction (2002) Patents Ernst was very active and got a total of 345 patents granted. – High frequency alternator (100 kHz), filed April 1909; issued, November 1911 – Selective Tuning System (Tuned RF Circuit, filed October 1913; issued February 1916 – Ignition system, (RFI suppressor), filed June 1926; issued August 1929 – Radio signaling system (directional antenna), filed November 1927, issued September 1930 See also Amplidyne Tuned radio frequency receiver References Other sources Blackwelder, Julia Kirk (2014) Electric City: General Electric in Schenectady (Texas A&M University Press) Brittain, James E. (1992) Alexanderson: Pioneer in American Electrical Engineering (Johns Hopkins University Press) Fisher, David E. and Marshall J. Fisher (1996) Tube, the Invention of Television (Counterpoint, Washington D.C) Related reading Alexanderson, E.F.W. (August 1920) Trans-oceanic Radio Communication (Proceedings of the I.R.E., pp. 263–285) External links Illustrated biography at prof. Eugenii Katz website accessed April 10, 2006 Bibliography related to Alexanderson's contribution to history of television at Histoire de la télévision" site Fessenden and Marconi – their technologies and transatlantic experiments compared. Accessed April 10, 2006 1878 births 1975 deaths Electronics engineers