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long-distance communication cable

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  • Communication with submarines — is difficult because radio waves do not travel well through thick electrical conductors like salt water. The obvious solution is to surface and raise an antenna above the water, then use ordinary radio transmissions. Early submarines had to… …   Wikipedia

  • Coaxial cable — RG 59 flexible coaxial cable composed of: A: outer plastic sheath B: woven copper shield C: inner dielectric insulator D: copper core Coaxial cable, or coax, has an inner conductor surrounded by a flexible, tubular insulating layer, surrounded by …   Wikipedia

  • Drum (communication) — For other kinds of drums, see drum (disambiguation). Developed from hollow tree trunks, and used by cultures living in deforested areas, drums served as an early form of long distance communication, and were used during ceremonial and religious… …   Wikipedia

  • Cable television — CATV redirects here. For CAT5 cable, see Category 5 cable. Coaxial cable is often used to transmit cable television into a residence. Cable television is a system of providing television programs to consumers via radio frequency (RF) signals… …   Wikipedia

  • Câble sous-marin — Un câble sous marin est un câble posé sur le fond marin, destiné à acheminer des télécommunications ou à transporter de l énergie électrique. Les câbles sous marins sont mis en place et maintenus par des navires câbliers, après reconnaissance… …   Wikipédia en Français

  • Fiber-optic communication — An optical fiber junction box. The yellow cables are single mode fibers; the orange and blue cables are multi mode fibers: 50/125 µm OM2 and 50/125 µm OM3 fibers respectively. Fiber optic communication is a method of transmitting information from …   Wikipedia

  • military communication — Introduction       the transmission of information from reconnaissance and other units in contact with the enemy and the means for exercising command by the transmission of orders and instructions of commanders to their subordinates. As such, it… …   Universalium

  • Submarine communications cable — A cross section of a submarine communications cable. 1 Polyethylene 2 Mylar tape 3 Stranded steel wires 4 Aluminium water barrier 5 Polycarbonate 6 Copper or aluminium tube 7 Petroleum jelly 8 Optical fib …   Wikipedia

  • General Communication — GCI Communication Corp. (GCI) is a telecommunications corporation (NASDAQ: GNCMA) operating in Alaska. Through its own facilities and agreements with other providers, GCI provides cable television service, Internet access, and wireline and… …   Wikipedia

  • Category 6 cable — Category 6 cable, commonly referred to as Cat 6, is a cable standard for Gigabit Ethernet and other network protocols that is backward compatible with the Category 5/5e and Category 3 cable standards. Cat 6 features more stringent specifications… …   Wikipedia

  • SBC Communication — AT T  Cet article traite de l actuelle AT T (AT T Inc.). Pour l opérateur historique Américain fondé en 1885 et disparu en 2005, voir l article American Telephone Telegraph. Voir aussi la page d homonymie ATT. Logo de AT T Inc …   Wikipédia en Français

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