Year 1904.
- First experiments with telegraphic radio links in Spain.
- In France a commercial maritime radio network is set up under the control of the Ministry of Posts and Telegraphs.
- John fleming (U.K.) invents the thermionic two-electrode valve, or diode making possible sound transmission.
- A radiotelegraphy station is build on the Adriatic coast in the Principality of Montenegro.
Comments
Post a Comment