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100 Years of Wireless Telegraphy

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Oliver Solga
Martin Srb
April 15, 1997
Postal Stationery Printing House, Prague
Rotary-recess printing combined with recess printing
FDC Design:  Oliver Solga
FDC Engraving:  Martin Srb
Cancellation Design:  Oliver Solga
FDC Printing:  Postal Stationery Printing House, Prague, Czech Republic
FDC Print Technology:  Recess printing from flat plates
FDC Print Run:  10 000

In the past years of nineteenth century have been registered a several significant discoveries and contrivances that caused development of wireless telegraphy and evolution of further branchs of learning simultaneously.

  • In the 1886 the German physicist Heinrich Hertz proved the existence of electromagnetic waves. On this evidence began to develop the wireless telegraphy and later radiotechnique.

  • From the 1893 Nikola Tesla using so called ,Tesla´s steams for wireless transformation of reports.

  • The Guglielmo Marchese Marconi was the first one who emited Morse´s signs wireless to several hundred metres. In the first time he broadcasted the radio siqnals in 1894. In the 1901 he realized a wireless broadcasting over the Atlantic Ocean.

  • The Russian electrical engineer A. S. Popov showed to public radio-telegraphic transfer. In the 1897 he succeeded in transmision between mainland and ship to 5 Km distances.

  • In the 1897 Karl Ferdinand Braun contributed for initial development of wireless telegraphy, he stopped closed osillatory circumference.

  • In the 1904 a Slovak native Jozef Murgaš obtained two patents from the U S Patent Office for wireless broadcasting. In the 1905 wireless telegraphy with its own system broadcasting and receiving (tone-system) attained connection up to 200 Km distances. He obtained 12 American patents in branch of wireless telegraphy.

Content 1993-2000
Year 1997
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