BARD AI
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Redio ya kwanza inayotumia Mfumo wa Mawimbi ilianza kurusha Matangazo Mwaka 1895 baada ya Mvumbuzi Guglielmo Marconi kutoka Italia kufanikisha zoezi la Redio hiyo kusikika katika eneo la Kilomita 3.2 bila kuunganishwa na Waya.
Mwaka 1900 Wanasayansi 3, Reginald Fessenden, Maryland na Cobb Island walifanya utafiti na kufanikiwa kusafirisha sauti kupitia Redio iliyosikika kwa umbali wa Kilomita 1.6.
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Marconi and radio telegraphy
British Post Office engineers inspect Guglielmo Marconi's wireless telegraphy (radio) equipment in 1897.
In 1894, the young Italian inventor Guglielmo Marconi began working on the idea of building long-distance a wireless transmission systems based on the use of Hertzian waves (radio waves), a line of inquiry that he noted other inventors did not seem to be pursuing.
Marconi read through the literature and used the ideas of others who were experimenting with radio waves but did a great deal to develop devices such as portable transmitters and receiver systems that could work over long distances, turning what was essentially a laboratory experiment into a useful communication system.
By August 1895, Marconi was field testing his system but even with improvements he was only able to transmit signals up to one-half mile, a distance Oliver Lodge had predicted in 1894 as the maximum transmission distance for radio waves. Marconi raised the height of his antenna and hit upon the idea of grounding his transmitter and receiver.
With these improvements the system was capable of transmitting signals up to 2 miles (3.2 km) and over hills.[24] This apparatus proved to be the first engineering-complete, commercially successful radio transmission system and Marconi went on to receive British patent 12039, Improvements in transmitting electrical impulses and signals and in apparatus there-for, in 1896
Nautical and transatlantic transmissions
In 1897, Marconi established a radio station on the Isle of Wight, England and opened his "wireless" factory in the former silk-works at Hall Street, Chelmsford, England, in 1898, employing around 60 people.
On 12 December 1901, using a 500-foot (150 m) kite-supported antenna for reception—signals transmitted by the company's new high-power station at Poldhu, Cornwall, Marconi transmitted a message across the Atlantic ocean to Signal Hill in St. John's, Newfoundland.
Marconi began to build high-powered stations on both sides of the Atlantic to communicate with ships at sea. In 1904, he established a commercial service to transmit nightly news summaries to subscribing ships, which could incorporate them into their on-board newspapers. A regular transatlantic radio-telegraph service was finally begun on 17 October 1907 between Clifden, Ireland, and Glace Bay, but even after this the company struggled for many years to provide reliable communication to others.
Marconi's apparatus is also credited with saving the 700 people who survived the tragic Titanic disaster.
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