Guglielmo Giovanni Maria Marconi, 1st Marquis of Marconi was an Italian inventor and electrical engineer, known for his creation of a practical radio wave–based wireless telegraph system. This led to Marconi being credited as the inventor of radio, and he shared the 1909 Nobel Prize in Physics with Karl Ferdinand Braun "in recognition of their contributions to the development of wireless telegraphy".
Wireless telegraphy or radiotelegraphy is transmission of text messages by radio waves, analogous to electrical telegraphy using cables. Before about 1910, the term wireless telegraphy was also used for other experimental technologies for transmitting telegraph signals without wires. In radiotelegraphy, information is transmitted by pulses of radio waves of two different lengths called "dots" and "dashes", which spell out text messages, usually in Morse code. In a manual system, the sending operator taps on a switch called a telegraph key which turns the transmitter on and off, producing the pulses of radio waves. At the receiver the pulses are audible in the receiver's speaker as beeps, which are translated back to text by an operator who knows Morse code.
SOS is a Morse code distress signal, used internationally, originally established for maritime use. In formal notation SOS is written with an overscore line, to indicate that the Morse code equivalents for the individual letters of "SOS" are transmitted as an unbroken sequence of three dots / three dashes / three dots, with no spaces between the letters. In International Morse Code three dots form the letter "S" and three dashes make the letter "O", so "S O S" became a common way to remember the order of the dots and dashes. IWB, VZE, 3B, and V7 form equivalent sequences, but traditionally SOS is the easiest to remember.
CQD is one of the first distress signals adopted for radio use. On 7 January 1904 the Marconi International Marine Communication Company issued "Circular 57", which specified that, for the company's installations, beginning 1 February 1904 "the call to be given by ships in distress or in any way requiring assistance shall be 'C Q D' ".
The invention of radio communication was preceded by many decades of establishing theoretical underpinnings, discovery and experimental investigation of radio waves, and engineering and technical developments related to their transmission and detection. These developments allowed Guglielmo Marconi to turn radio waves into a wireless communication system.
The timeline of radio lists within the history of radio, the technology and events that produced instruments that use radio waves and activities that people undertook. Later, the history is dominated by programming and contents, which is closer to general history.
The Wireless Ship Act of 1910, formally titled "An Act to require apparatus and operators for radio-communication on certain ocean steamers" and also known as the "Radio Ship Act of 1910" and the "Radio Act of 1910", was the first federal legislation regulating radio communication in the United States. It required certain ocean-going vessels exiting U.S. ports to carry radio equipment, and although it did not require stations or operators to be licensed, it did require certification that operators and radio equipment met minimum standards.
Lucania was a British ocean liner owned by the Cunard Steamship Line Shipping Company, built by Fairfield Shipbuilding and Engineering Company of Govan, Scotland, and launched on Thursday, 2 February 1893.
Georg Wilhelm Alexander Hans Graf von Arco was a German physicist, radio pioneer, and one of the joint founders of the "Society for Wireless Telegraphy" which became the Telefunken company. He was an engineer and the technical director of Telefunken. He was crucial in the development of wireless technology in Europe.
The Massie Wireless Station (PJ) was built in Point Judith, Rhode Island, in 1907 and may be the oldest surviving working wireless station in the world. It is named for inventor Walter Wentworth Massie, president of the Massie Wireless Telegraph Company. The structure was moved to the New England Wireless and Steam Museum in 1983 where it is preserved as a technology museum and historic site.
Harry Shoemaker was an American inventor and pioneer radio engineer, who received more than 40 U.S. patents in the radio field from 1901 to 1905. His transmitter and receiver designs set the standard for the U. S. commercial radio industry up to World War One.
Although they often faced obstacles and policy limitations, beginning in the early 1900s a few women were able to participate in the pioneering development of radio communication.
Robert Henry Marriott (1879-1951) was an American electrical engineer, and one of the first persons to work in the field of radio communication. In 1902 he engineered the first commercial radiotelegraph link established in the United States by a U.S. company, connecting the island of Santa Catalina with the California mainland. He founded the Wireless Institute professional society in 1909, which was merged in 1912 with the Society of Wireless Telegraph Engineers to form the Institute of Radio Engineers (IRE), and served as the IRE's first president.
The history of broadcasting in Australia has been shaped for over a century by the problem of communication across long distances, coupled with a strong base in a wealthy society with a deep taste for aural communications in a silent landscape. Australia developed its own system, through its own engineers, manufacturers, retailers, newspapers, entertainment services, and news agencies. The government set up the first radio system, and business interests marginalized the hobbyists and amateurs. The Labor Party was especially interested in radio because it allowed them to bypass the newspapers, which were mostly controlled by the opposition. Both parties agreed on the need for a national system, and in 1932 set up the Australian Broadcasting Commission, as a government agency that was largely separate from political interference.
The Marconi Wireless Telegraph Company of America was incorporated in 1899. It was established as a subsidiary of the British Marconi Company and held the U.S. and Cuban rights to Guglielmo Marconi's radio patents. American Marconi initially primarily operated high-powered land and transatlantic shipboard stations. In 1912, it acquired the extensive assets of the bankrupt United Wireless Telegraph Company, becoming the dominant radio communications provider in the United States.
Australasian Wireless relates to two separate entities: Australasian Wireless Limited and Australasian Wireless Company Limited. The former obtained an option to acquire the exclusive rights to the Telefunken wireless telegraphy system in Australasia, the latter acquired those rights and with public capital developed a firm which was successful in supplying wireless telegraphy equipment to shipping in Australasian waters and the establishment of Australia's first coastal radio stations. When the Australian Government decided to complete the remainder of the coastal network using the Balsillie wireless system manufactured by Father Archibald Shaw, AWCL merged with Marconi interests to form Amalgamated Wireless (Australasia). This merged firm eventually won the exclusive right to operate Australia's coastal radio network and went on to become the dominant company in Australia's radiocommunications and broadcasting industry.
The Preliminary Conference on Wireless Telegraphy, held in Berlin, Germany, in August 1903, reviewed radio communication issues, in preparation for the first International Radiotelegraph Convention held three years later. This was the first multinational gathering for discussing the development of worldwide radio standards.
The first International Radiotelegraph Convention was held in Berlin, Germany, in 1906. It reviewed radio communication issues, and was the first major convention to set international standards for ship-to-shore communication. One notable provision was the adoption of Germany's "SOS" distress signal as an international standard.
Elettra was the name of Guglielmo Marconi's steam yacht – a seaborne laboratory – from which he conducted his many experiments with wireless telegraphy, wireless telephony and other communication and direction-finding techniques during the inter-war period.
