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STC PLC
Standard Telephones and Cables Ltd (later STC plc) was a British manufacturer of telephone, telegraph, radio, telecommunications, and related equipment. During its history, STC invented and developed several groundbreaking new technologies including pulse-code modulation (PCM) and optical fibres. The company was founded in 1883 in London as International Western Electric by the Western Electric Company, shortly after Western Electric became the telephone equipment supplier for the American Telephone and Telegraph Company (AT&T) in the United States. In 1925, Western Electric divested itself of all foreign operations and sold International Western Electric to International Telephone and Telegraph (ITT), in part to thwart antitrust actions by the American government. In mid-1982, STC became an independent company and was listed on the London Stock Exchange; for a time it was a constituent of the FTSE 100 Index. It was bought by Nortel in 1991. History Early days The compan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Public Company
A public company is a company whose ownership is organized via shares of stock which are intended to be freely traded on a stock exchange or in over-the-counter markets. A public (publicly traded) company can be listed on a stock exchange (listed company), which facilitates the trade of shares, or not (unlisted public company). In some jurisdictions, public companies over a certain size must be listed on an exchange. In most cases, public companies are ''private'' enterprises in the ''private'' sector, and "public" emphasizes their reporting and trading on the public markets. Public companies are formed within the legal systems of particular states, and therefore have associations and formal designations which are distinct and separate in the polity in which they reside. In the United States, for example, a public company is usually a type of corporation (though a corporation need not be a public company), in the United Kingdom it is usually a public limited company (plc), i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wireless
Wireless communication (or just wireless, when the context allows) is the transfer of information between two or more points without the use of an electrical conductor, optical fiber or other continuous guided medium for the transfer. The most common wireless technologies use radio waves. With radio waves, intended distances can be short, such as a few meters for Bluetooth or as far as millions of kilometers for deep-space radio communications. It encompasses various types of fixed, mobile, and portable applications, including two-way radios, cellular telephones, personal digital assistants (PDAs), and wireless networking. Other examples of applications of radio ''wireless technology'' include GPS units, garage door openers, wireless computer mouse, keyboards and headsets, headphones, radio receivers, satellite television, broadcast television and cordless telephones. Somewhat less common methods of achieving wireless communications involve other electromagnetic phenomena, s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telephony
Telephony ( ) is the field of technology involving the development, application, and deployment of telecommunication services for the purpose of electronic transmission of voice, fax, or data, between distant parties. The history of telephony is intimately linked to the invention and development of the telephone. Telephony is commonly referred to as the construction or operation of telephones and telephonic systems and as a system of telecommunications in which telephonic equipment is employed in the transmission of speech or other sound between points, with or without the use of wires. The term is also used frequently to refer to computer hardware, software, and computer network systems, that perform functions traditionally performed by telephone equipment. In this context the technology is specifically referred to as Internet telephony, or voice over Internet Protocol (VoIP). Overview The first telephones were connected directly in pairs. Each user had a separate telephone wired ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RMS Queen Elizabeth
RMS ''Queen Elizabeth'' was an ocean liner operated by Cunard Line. With ' she provided weekly luxury liner service between Southampton in the United Kingdom and New York City in the United States, via Cherbourg in France. While being constructed in the mid-1930s by John Brown and Company at Clydebank, Scotland, the build was known as ''Hull 552''. She was launched on 27 September 1938 and named in honour of Queen Elizabeth, who was later known as the Queen Mother. With a design that improved upon that of ', ''Queen Elizabeth'' was a slightly larger ship, the largest passenger liner ever built at that time and for 56 years thereafter. She also has the distinction of being the largest-ever riveted ship by gross tonnage. She first entered service in February 1940 as a troopship in the Second World War, and it was not until October 1946 that she served in her intended role as an ocean liner. With the decline in popularity of the transatlantic route, both ships were replaced by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RMS Queen Mary
RMS ''Queen Mary'' is a retired British ocean liner that sailed primarily on the North Atlantic Ocean from 1936 to 1967 for the Cunard-White Star Line and was built by John Brown & Company in Clydebank, Scotland. ''Queen Mary'', along with , were built as part of Cunard's planned two-ship weekly express service between Southampton, Cherbourg and New York. The two ships were a British response to the express superliners built by German, Italian and French companies in the late 1920s and early 1930s. ''Queen Mary'' sailed on her maiden voyage on 27 May 1936 and won the Blue Riband that August; she lost the title to in 1937 and recaptured it in 1938, holding it until 1952, when it was taken by the new . With the outbreak of World War II, she was converted into a troopship and ferried Allied soldiers during the conflict. Following the war, ''Queen Mary'' was refitted for passenger service and along with ''Queen Elizabeth'' commenced the two-ship transatlantic passenger servic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coaxial Cable
Coaxial cable, or coax (pronounced ) is a type of electrical cable consisting of an inner conductor surrounded by a concentric conducting shield, with the two separated by a dielectric ( insulating material); many coaxial cables also have a protective outer sheath or jacket. The term ''coaxial'' refers to the inner conductor and the outer shield sharing a geometric axis. Coaxial cable is a type of transmission line, used to carry high-frequency electrical signals with low losses. It is used in such applications as telephone trunk lines, broadband internet networking cables, high-speed computer data busses, cable television signals, and connecting radio transmitters and receivers to their antennas. It differs from other shielded cables because the dimensions of the cable and connectors are controlled to give a precise, constant conductor spacing, which is needed for it to function efficiently as a transmission line. Coaxial cable was used in the first (1858) and followin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microwave
Microwave is a form of electromagnetic radiation with wavelengths ranging from about one meter to one millimeter corresponding to frequencies between 300 MHz and 300 GHz respectively. Different sources define different frequency ranges as microwaves; the above broad definition includes both UHF and EHF (millimeter wave) bands. A more common definition in radio-frequency engineering is the range between 1 and 100 GHz (wavelengths between 0.3 m and 3 mm). In all cases, microwaves include the entire SHF band (3 to 30 GHz, or 10 to 1 cm) at minimum. Frequencies in the microwave range are often referred to by their IEEE radar band designations: S, C, X, Ku, K, or Ka band, or by similar NATO or EU designations. The prefix ' in ''microwave'' is not meant to suggest a wavelength in the micrometer range. Rather, it indicates that microwaves are "small" (having shorter wavelengths), compared to the radio waves used prior to microwave te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transmission (telecommunications)
In telecommunications, transmission is the process of sending or propagating an analog or digital signal via a medium that is wired, wireless, or fiber-optic. Transmission technologies typically refer to physical layer protocol duties such as modulation, demodulation, line coding, equalization, error control, bit synchronization and multiplexing, but it may also involve higher-layer protocol duties, for example, digitizing an analog signal, and data compression. Transmission of a digital message, or of a digitized analog signal, is known as data transmission. Examples of transmission are the sending of signals with limited duration, for example, a block or packet of data, a phone call, or an email. See also *Radio transmitter In electronics and telecommunications, a radio transmitter or just transmitter is an electronic device which produces radio waves with an antenna. The transmitter itself generates a radio frequency alternating current, which is applied to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kolster-Brandes
Kolster-Brandes Ltd was an American owned, British manufacturer of radio and television sets based in Foots Cray, Sidcup, Kent. History The company was a descendant of ''Brandes'', a Canadian company founded in Toronto in 1908. Brandes became part of AT&T in 1922 and a British subsidiary ''Brandes Ltd.'' was established in Slough, in 1924, to manufacture headphones.The Setmakers by Keith Geddes and Gordon Bussey () The company rapidly expanded producing a range of loud speakers and in 1928 moved to a former silk mill at Foots Cray. The company was renamed ''Kolster-Brandes Ltd.'' after the American parent company merged with the Kolster Radio Corporation. In 1930 the company supplied 40,000 of its ''Masterpiece'' two-valve, bakelite cabinet radios to the Godfrey Phillips tobacco company, who gave them away to customers in exchange for cigarette coupons. K-B also began a long association with Cunard after they won a contract to provide communications equipment for the RMS Queen Mary ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foots Cray
Foots Cray is an area of South East London, England, within the London Borough of Bexley, Greater London. Prior to 1965 it was in the historic county of Kent. It is located south-east of Sidcup. History It took its name from Godwin Fot, a local Saxon landowner recorded in the Domesday Book of 1086, and from the River Cray that passes through the village. It lay on the old Maidstone Road (now bypassed by the A20 road) leading from London to north Kent. Until the 20th century, Foots Cray dominated the nearby, less ancient hill-top hamlet of Sidcup. The combined area was designated as the Urban District of Foots Cray in 1902. Soon, however, the two settlements' fortunes were reversed, as Foots Cray's traditional industries declined after the First World War, and Sidcup grew rapidly as a commuter town after a railway was built linking it to central London. In 1921 this change was reflected in the renaming of Foots Cray Urban District to Sidcup Urban District. In 1965 both area ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sosthenes Behn
Sosthenes Behn (January 30, 1884 – June 6, 1957) was an American businessman, and the founder of ITT. He held the rank of lieutenant colonel in the U.S. Army. Biography Early years Sosthenes Behn was born in the island of St. Thomas, then part of the Danish West Indies. His ancestry was Danish on his paternal side, and French on his maternal side. Behn served in the United States Army and was commissioned a captain, Signal Corps, on June 19, 1917. He later achieved the rank of Lieutenant Colonel, having served with distinction during World War I. Behn served with the American Expeditionary Force (AEF) in France until February 1919. He was given command of the 232nd Field Signal Battalion, Château-Thierry, Saint-Mihiel, Argonne. In recognition of his meritorious service during the war he was awarded the Distinguished Service Medal (DSM). Puerto Rico Telephone Company and ITT After his return from military service, Colonel Behn co-founded the Puerto Rico Telephone Company wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ITT Corporation
ITT Inc., formerly ITT Corporation, is an American worldwide manufacturing company based in Stamford, Connecticut. The company produces specialty components for the aerospace, transportation, energy and industrial markets. ITT's three businesses include Industrial Process, Motion Technologies, and Connect and Control Technologies. ITT has approximately 10,000 employees in more than 35 countries and serves customers in well over 100 countries. The company's long-standing brands include Goulds Pumps, Cannon connectors, KONI shock absorbers and Enidine energy absorption components. The company was founded in 1920 as International Telephone & Telegraph. During the 1960s and 1970s, under the leadership of CEO Harold Geneen, the company rose to prominence as the archetypal conglomerate, deriving its growth from hundreds of acquisitions in diversified industries. ITT divested its telecommunications assets in 1986. In 1995, the company sold off its hospitality portfolio, including ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
