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Telegrapher
A telegraphist (British English), telegrapher (American English), or telegraph operator is an operator who uses a telegraph key to send and receive the Morse code in order to communicate by land lines or radio. During the Great War the Royal Navy enlisted many volunteers as radio telegraphists. Telegraphists were indispensable at sea in the early days of wireless telegraphy, and many young men were called to sea as professional radiotelegraph operators who were always accorded high-paying officer status at sea. Subsequent to the ''Titanic'' disaster and the Radio Act of 1912, the International Safety of Life at Sea ( SOLAS) conventions established the 500kHz maritime distress frequency monitoring and mandated that all passenger-carrying ships carry licensed radio telegraph operators. In popular culture *The telegraphist mouse in Australia and the Marshall Islands from ''The Rescuers Down Under''. See also * Amateur radio * Casa del Telegrafista (House of the Telegr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telegraph Key
A telegraph key is a specialized electrical switch used by a trained operator to transmit text messages in Morse code in a telegraphy system. Keys are used in all forms of electrical telegraph systems, including landline (also called wire) telegraphy and radio (also called wireless) telegraphy. An operator uses the telegraph key to send electrical pulses (or in the case of modern CW, unmodulated radio waves) of two different lengths: short pulses, called ''dots'' or ''dits'', and longer pulses, called ''dashes'' or ''dahs''. These pulses encode the letters and other characters that spell out the message. Types Since its original inception, the telegraph key's design has developed such that there are now multiple types of keys. Straight keys A ''straight key'' is the common telegraph key as seen in various movies. It is a simple bar with a knob on top and an electrical contact underneath. When the bar is pressed down against spring tension, it makes a closed electric circ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transatlantic Telegraph Cable
Transatlantic telegraph cables were undersea cables running under the Atlantic Ocean for telegraph communications. Telegraphy is now an obsolete form of communication, and the cables have long since been decommissioned, but telephone and data are still carried on other transatlantic telecommunications cables. The first cable was laid in the 1850s from Valentia Island off the west coast of Ireland to Bay of Bulls, Trinity Bay, Newfoundland. The first communications occurred on 16 August 1858, but the line speed was poor, and efforts to improve it caused the cable to fail after three weeks. The Atlantic Telegraph Company led by Cyrus West Field constructed the first transatlantic telegraph cable. The project began in 1854 and was completed in 1858. The cable functioned for only three weeks, but was the first such project to yield practical results. The first official telegram to pass between two continents was a letter of congratulations from Queen Victoria of the United ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Telegraphists
This is a list of notable telegraphists. Telegraphists * Harold Bride * Harold Thomas Cottam *Louisa Margaret Dunkley * Thomas Eckert * Thomas Edison * John H. Emerick * Mathilde Fibiger * Ambrose E. Gonzales * Oliver Heaviside * Emma Hunter * Joseph Nathan Kane * Hiram Percy Maxim * Mary Macaulay * Theodore Roosevelt McElroy * Sir John Moores * Seeb Chunder Nandy * Jack Phillips * Franklin Leonard Pope * John Willard Raught * Leah Rosenfeld * David Sarnoff * Ola Delight Smith * Wilhelmina Magdalene Stuart * Ella Cheever Thayer * Ella Stewart Udall * Alfred Vail See also * Lists of people by occupation This is a list of lists of people by occupation. Each is linked to a list of notable people within that profession. Lists of lists *Actors *Engineers *Musicians *Scientists List of... * Accordionists *Africanists *Anthropologists *Archaeolo ... {{DEFAULTSORT:Telegraphists, list of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Casa Del Telegrafista
Casa del Telegrafista (house of the telegrapher) is a museum in Aracataca. by PAOLA BENJUMEA BRITO ENVIADA DE EL TIEMPO ARACATACA (MAGDALENA) April 3, 2011 El Tiempo The town is the birthplace of author and photographer Leo Matiz
Leonet Matiz Espinoza (April 1, 1917 – October 24, 1998) was a Colombian photographer, caricaturist, newspaper publisher, painter and gallery owner.
Early life
Matiz was born in the small village of Aracataca in ...
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Obsolete Occupations
Obsolescence is the state of being which occurs when an object, service, or practice is no longer maintained or required even though it may still be in good working order. It usually happens when something that is more efficient or less risky replaces it. The international standard IEC 62402:2019 Obsolescence Management defines obsolescence as the "transition from available to unavailable from the manufacturer in accordance with the original specification". Obsolete also refers to something that is already disused or discarded, or antiquated. Typically, obsolescence is preceded by a gradual decline in popularity. Consequences Driven by rapid technological changes, new components are developed and launched on the market with increasing speed. The result is a dramatic change in production methods of all components and their market availability. A growing industry sector is facing issues where life cycles of products no longer fit together with life cycles of required components ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prosigns For Morse Code
Procedural signs or prosigns are shorthand signals used in Morse code radio telegraphy procedure, for the purpose of simplifying and standardizing radio communication protocol. They are separate from Morse code abbreviations, which consist mainly of brevity codes that convey messages to other parties with greater speed and accuracy. In general prosigns are just standardised parts of short form radio protocol, and can include any abbreviation. An example would be K for "okay, heard you, continue". In a more limited role the term refers to something akin to that of the nonprinting control characters in teleprinter and computer character sets, such as Baudot or ASCII. Different from abbreviations, those are universally recognizable across language barriers as distinct and well-defined symbols. At the coding level, prosigns admit any form the Morse code can take, unlike abbreviations which have to follow letter form. Many of them are longer than typical characters and are rendered wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Commercial Cable Company
The Commercial Cable Company was founded in New York in 1884 by John William Mackay and James Gordon Bennett, Jr. Their motivation was to break the then virtual monopoly of Jay Gould on transatlantic telegraphy and bring down prices (particularly for Bennett's newspaper empire). Their most famous ship was the CS Mackay-Bennett, named after the founders. The technology was well established by this time, and they were able to lay cables from Waterville in Ireland to Canso, Nova Scotia, without the major technical problems of the first Transatlantic telegraph cable. Onward connections to New York City and beyond were initially overland and later submarine. Connections from Waterville to Weston-super-Mare in England and Le Havre in France were soon established by the submarine route after initial use of landlines from Waterville onward to mainland Britain. Commercial Cable also had a relationship with the German Atlantic submarine cable system. Domestically the cable distributed i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amateur Radio
Amateur radio, also known as ham radio, is the use of the radio frequency spectrum for purposes of non-commercial exchange of messages, wireless experimentation, self-training, private recreation, radiosport, contesting, and emergency communications. The term "amateur" is used to specify "a duly authorised person interested in radioelectric practice with a purely personal aim and without pecuniary interest;" (either direct monetary or other similar reward) and to differentiate it from commercial broadcasting, public safety (such as police and fire), or professional two-way radio services (such as maritime, aviation, taxis, etc.). The amateur radio service (''amateur service'' and '' amateur-satellite service'') is established by the International Telecommunication Union (ITU) through the Radio Regulations. National governments regulate technical and operational characteristics of transmissions and issue individual station licenses with a unique identifying call sign, which mus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Rescuers Down Under
''The Rescuers Down Under'' is a 1990 American animated adventure film produced by Walt Disney Feature Animation and released by Walt Disney Pictures. The 29th Disney animated feature film and the second movie to be produced during the Disney Renaissance, it is the sequel to the 1977 film ''The Rescuers'', which was based on the novels by Margery Sharp. In ''The Rescuers Down Under'', Bernard and Bianca travel to the Australian Outback to save a boy named Cody from a villainous poacher who wants to capture an endangered bird of prey for money. Directed by Hendel Butoy and Mike Gabriel (in their feature directorial debuts) from a screenplay by Jim Cox, Karey Kirkpatrick, Byron Simpson, and Joe Ranft, the film features the voices of Bob Newhart, Eva Gabor (in her final film role), John Candy, and George C. Scott. By the mid-1980s, ''The Rescuers'' had become one of Disney's most successful animated releases. Under the new management of Michael Eisner and Jeffrey Katzenberg, a featur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marshall Islands
The Marshall Islands ( mh, Ṃajeḷ), officially the Republic of the Marshall Islands ( mh, Aolepān Aorōkin Ṃajeḷ),'' () is an independent island country and microstate near the Equator in the Pacific Ocean, slightly west of the International Date Line. Geographically, the country is part of the larger island group of Micronesia. The country's population of 58,413 people (at the 2018 World Bank Census) is spread out over five islands and 29 coral atolls, comprising 1,156 individual islands and islets. The capital and largest city is Majuro. It has the largest portion of its territory composed of water of any sovereign state, at 97.87%. The islands share maritime boundaries with Wake Island to the north, Kiribati to the southeast, Nauru to the south, and Federated States of Micronesia to the west. About 52.3% of Marshall Islanders (27,797 at the 2011 Census) live on Majuro. In 2016, 73.3% of the population were defined as being "urban". The UN also indicates a population d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australia
Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, smaller islands. With an area of , Australia is the largest country by area in Oceania and the world's List of countries and dependencies by area, sixth-largest country. Australia is the oldest, flattest, and driest inhabited continent, with the least fertile soils. It is a Megadiverse countries, megadiverse country, and its size gives it a wide variety of landscapes and climates, with Deserts of Australia, deserts in the centre, tropical Forests of Australia, rainforests in the north-east, and List of mountains in Australia, mountain ranges in the south-east. The ancestors of Aboriginal Australians began arriving from south east Asia approximately Early human migrations#Nearby Oceania, 65,000 years ago, during the Last Glacial Period, last i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
