1860: The existence of radio waves predicted

1866: Demonstrated that rapid variations of electric current could be projected into space in the form of radio waves similar to those of light and heat.

1866: "Wireless telegraphy" successfully demonstrated; able to make a meter connected to one kite cause another one to move, marking the first known instance of wireless aerial communication.

1985: First radio signal sent in Italy.

1899:The first wireless signal flashedacross the English Channel

1902: The letter "S" telegraphed from England to Newfoundland.