Dec. 12th, 1901
Guglielmo Marconi received the first transatlantic radio signal, from Poldhu Wireless Station in Cornwall, England, to Signal Hill in St. John's, Newfoundland.
Read more at:
http://earlyradiohistory.us/1902marc.htm
Radio has came a long way, My beacon transmitter (WB9OTX/B) using less power than your car's tail light (5 Watts) is heard almost daily in Europe..... Jack