Resultado de búsqueda
In 1957, Sony introduced the TR-63, the first mass-produced transistor radio, leading to the mass-market penetration of transistor radios. Over the next 20 years, transistors replaced tubes almost completely except for high-power transmitters .
In 1900, construction began on a large radio transmitting alternator. Fessenden, experimenting with a high-frequency spark transmitter, successfully transmitted speech on 23 December 1900, over a distance of about 1.6 kilometres (0.99 mi), the first audio radio transmission.
9 de feb. de 2010 · Italian physicist and radio pioneer Guglielmo Marconi succeeds in sending the first radio transmission across the Atlantic Ocean, disproving detractors who told him that the curvature of the...
4 de oct. de 2023 · The grand invention of the radio signal transmission system traces back to the penultimate decade of the 19th century. The young Marconi began experimenting with radio waves after studying Heinrich Hertz’s electromagnetic theories and James Clerk Maxwell’s electromagnetic wave equations.
12 de dic. de 2014 · Guglielmo Marconi (1874-1937) was a mere 27 years old when he successfully made the first transatlantic radio transmission on December 12, 1901. Inspired by the German physicist Heinrich Hertz, who had solidified and proved the theory of electromagnetic waves, Marconi began experimenting with radio waves at a very young age.
The first major use of radio was for navigation, where it greatly reduced the isolation of ships, saving thousands of lives, even though for the first couple of decades radio was generally limited to Morse code transmissions.
The first two-way transatlantic radio telegraphy transmission took place on 10 January 1906, between Fessenden's stations at Brant Rock, MA and Machrihanish Scotland. Repeatedly regular exchange of messages across the Atlantic Ocean took place on most days during winter, spring and into early summer.
