History of telecommunications

 


 

Glossary Scientists
History tlc
History telegraph
History telephone
TV history
History components
  By  Sergio Arienti ®


  
 



Historical Timeline of technical development of radio
 






RADIO



TECHNOLOGY DEVELOPMENT
  
 







     


1864
Theory of electromagnetic waves
James Clerk Maxwell






1884
Detector of electromagnetic waves (coherer)
Temistocle Calzecchi Onesti






1887   Experimentation electromagnetic waves
Heinrich Rudolph Hertz
 
 
   
1888
Detector of electromagnetic waves  (coherer)
Désiré Edouard Branly




 

1895   Wireless Telegraphy  
Guglielmo Marconi






1898
 Detector of electromagnetic waves (coherer)
Oliver Joseph Lodge






1901
Detector crystal of Galena (diode to galena)
Jagadis Chunder Bose
 
 


1904 
Diode 
John Ambrose Fleming


 


1906   Detector crystal silicon
Greenleaf Whittier Pickard


 


1906   Detector crystal of carborundum
Henry Harrison Chase Dunwoody






1906   Radio AM ( AMPLITUDE MODULATION)
Reginald Aubrey Fessenden
Lee De Forest 
 




1906
Amplifier  -Triode (audion)
Lee De Forest 
 




1913   Circuits regeneration or Receiver jet
Edwin Howard Armstrong
 




1918
Superheterodine
Lucien Levy
 




1933   Radio FM ( FREQUENCY MODULATION)
Edwin Howard Armstrong