Wireless Chronology

History of Wireless Communication.

Milestone Dates.

???? - Friction machines to produce static electricity.
        
1745 - Leyden Jar.   1st  method of storing a charge.

1800 - Volta produced the first cell. Continuous current.

1820 - Oersted.  Relation between current and field.

1831 - Faraday. Electromagnetic induction.

1837 - 1st Electric Telegraph. Euston to Camden Town.

1845 - 1st Murderer caught using The Telegraph.

1851 - Ruhmkorff invented The Induction Coil.

     - 1st Channel  Telegraph cable.

1864 - Maxwell predicts  Electromagnetic Waves.

1866 - 1st successful Trans-Atlantic telegraph cable.

1871 - Empire cable links to Australia..

1879 - Hughes. Wireless - 500 yds. along Gt Portland St.

     - 1st Telephone exchange opened in London.  

1880 - Trobridge. Boston USA.  Induction at sea.

1885 - Preece. Takes interest in parallel induction.

1887 - Hertz.  Spark transmission across laboratory.
       Understanding of dipole aerial.

1889 - Lodge. 1st ideas of resonance and tuning.

1890 - Branley. 1st sensitive detector.

1894 - Lodge.  Improves Branley's detector and names it
       The Coherer. Uses Morse Code in transmissions.

1895 - Marconi in Italy using the coherer sends signal
       1 mile.  Acknowledged by gun shot. 

1896 - Marconi's work ignored by Italian government.
       Comes to England.

     - Marconi takes out patent on some improvements.

     - Marconi demonstration on Salibury Plain to 
       Military and Post Office. Little interest - but great
       interest by lay press.

1897 - Lodge . In May takes out patent on selective tuning.
       Very important development. Called at time Syntony.

     - Marconi  and Post Office hold trials between
       Lavernock, five miles south of Cardiff, and
       Flat Holme in the Bristol Channel. Just over 3 miles.
                               
     - Marconi and his associates register the Wireless
       Telegraph and Signal Company. This led to the breakdown
       of relations between Marconi and the P.O.
                 
1899 - Marconi achieving ranges of sixty miles. His equipment
       used for ship to shore communication.

1901 - Marconi claims trans-Atlantic contact between Poldhu
       in Cornwall and St Johns Newfoundland. Single Morse
       letter. 1800 miles.

1902 - Pouson developed the arc transmitter.

1906 - R.A. Fessenden, USA, transmitted speech over several
       hundred miles.

1913 - German wireless station in Nauen transmitted morse
       1550 miles.

1914 - Marconi Company start experimental speech
       transmissions from Marconi House London.

1915 - American Telephone and Telegraph Co. with Western
       Electric sent speech fron The Naval station in
       Arlington to The Eiffel Tower.

1918 - The Marconi Co. start experimental speech
       transmissions from Iceland to North America.

1920        - Start of twice daily experimental programmes
              from Chelmsford. 

     22 Jun - Dame Nellie Melba sings from Chelmsford.

1922 14 Feb - 1st broadcast from Marconi station 2MT
              at Writtle.

     11 May - 1st broadcast from Marconi station 2LO  LONDON.

     16 May - 1st broadcast Metropolitan Vickers 2ZY
              Manchester.

      1 Nov - Broadcast Receiving Licence started.
              10 shillings per year.

     14 Nov - The British Broadcasting Company first
              station 2LO opened. 

1923  1 May - Savoy Hill studio opened by BBC.      
            

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