Telegraph Keys and Codes
40 entries in the Telegraph Keys and Codes compendium.
Chappe telegraphA French optical telegraph system using towers and telescopes.Cooke and Wheatstone telegraphFirst commercial electrical telegraph, using needles to indicate letters.Earth-return telegraphEarth return halves wire cost by using ground as conductor.Electrical telegraphFirst electrical telecommunications system, used from the 1840s.Cyrus W. FieldFinancier who led the first transatlantic telegraph cable project.Foy–Breguet telegraphElectrical telegraph mimicking the Chappe optical code.HeliographA solar telegraph using reflected sunlight for long-distance optical communication.Needle telegraphAn electromagnetic telegraph using needles to indicate messages.Order of Railroad TelegraphersUnion of railroad telegraphers ensuring safe train operations.Telegraph codeCharacter encodings for telegraphy, from optical to electrical systems.TeleprinterElectromechanical device for typed message transmission.Teletype CorporationAmerican manufacturer of teleprinters and data communications equipment.John B. YaleTelegraph entrepreneur who challenged Western Union's monopoly.Ticker tapeEarly electrical medium for transmitting stock prices over telegraph lines.Wheatstone systemAutomated telegraph system using punched paper tape for fast Morse transmission.Schilling telegraphA nineteenth-century needle telegraph using binary code and a piano-like keyboard.Commercial code (communications)Codes that turned phrases into single words to save on cablegram costs.PK PorthcurnoMuseum of global communications in former telegraph tunnels.Great Western Railway telegraphic codesCommercial telegraph code used by the Great Western Railway.PantelegraphEarly facsimile machine transmitting handwriting over telegraph lines.Telegraph troopsMilitary units for establishing and disrupting telegraphic communications in war.Walter P. PhillipsCreator of the Phillips Code, including POTUS and SCOTUS.Syphon recorderElectromechanical receiver that recorded Morse code as ink on paper tape.Francis Ormand Jonathan SmithLawyer, congressman, and financier who partnered with Samuel Morse on the telegraph.TelegramA written message transmitted by telegraph, popular from the 19th to mid-20th century.Phillips CodeA telegraphic shorthand standardizing abbreviations for rapid press transmission.Baltimore–Washington telegraph lineFirst long-distance overland telegraph line in the United States.John H. EmerickUnion Army telegraph operator and youngest cipher clerk.Cape York Telegraph LineQueensland telegraph line linking Laura to Thursday Island, completed 1887.Acoustic telegraphyA method of sending multiple Morse messages over one wire using audio frequencies.Henry O'ReillyIrish-American businessman and telegraphy pioneer.John James SpeedAmerican farmer, merchant, politician, and telegraphy pioneer.Telegraph sounderAn electromechanical receiver that made Morse code audible via clicks.VibrateseA tactile communication system using duration, intensity, and location.Joseph Barker StearnsInventor of the first practical duplex telegraphy system.Beardslee TelegraphA portable military telegraph using a dial and magneto instead of a key.Oficina de Telégrafo y TeléfonoArt Deco telegraph and telephone station in Guaynabo, Puerto Rico.Telegraphic addressA unique code for telegraph recipients, regulated to prevent duplication.Kleinschmidt keyboard perforatorKeyboard perforator that prepared punched tape for telegraph transmission.International Alphabet No. 5Seven-bit character encoding that improved on five-bit ITA2.
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