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WIRE COMMUNICATIONS SYSTEM [3 fiches]

Fiche 1 2009-01-07

Anglais

Subject field(s)
  • Telecommunications Transmission
  • Audio Technology
  • Police
  • Intelligence (Military)
DEF

The connection of a concealed listening or recording device to a communication circuit.

CONT

Wiretapping is the preferred method of obtaining intelligence... it involves tying in to a wire or other conductor that is used for communications. This wire can be a telephone line, a PBX [private branch exchange] cable, a local area network, a CCTV [closed circuit television] video system, an alarm system, or any other communications medium.

OBS

telephone tapping: This practice is no longer limited to the use of telephone lines, but the term "telephone tapping" continues to be used to denote this concept.

Terme(s)-clé(s)
  • wire-tapping

Français

Domaine(s)
  • Transmission (Télécommunications)
  • Électroacoustique
  • Police
  • Renseignement (Militaire)
DEF

Installation discrète d'un dispositif d'écoute ou d'enregistrement sur un circuit de télécommunications.

Espagnol

Campo(s) temático(s)
  • Transmisión (Telecomunicaciones)
  • Electroacústica
  • Policía
  • Inteligencia (militar)
DEF

Instalación de un dispositivo en las líneas telefónicas o telemáticas para captar los datos que por ellas se transmiten.

Conserver la fiche 1

Fiche 2 2005-02-03

Anglais

Subject field(s)
  • Spacecraft
CONT

The US Navy’s Fleet Satellite Communications System (FLTSATCOM) is a constellation of five operational satellites used by both the Navy and Air Force as well as the presidential command network. The system with a design life of five years, serves as a secure communications link between the three users. Each satellite has 23 communications channels, 10 of which are used by the Navy for communication between its land forces, ships and aircraft. The Air Force uses 12 of the channels as part of its satellite communications system for command and control of nuclear forces. One channel is reserved for US national command authorities.

CONT

FLTSATCOM systems feature a main transmitting antenna that is 11 feet in diameter and surrounded by wire mesh screen. The body itself is hexagonal and is 8 inches wide and 4 feet tall. Two improved satellites recently joined four FLTSATCOM originals in orbit to extend the operation of the system well into the 1990s. The new systems carry an experimental extra-high-frequency package as a testbed for terminals being developed for the Milstar communications system.

Français

Domaine(s)
  • Engins spatiaux
CONT

[...] un système de transmissions par satellite Fleetsatcom.

Espagnol

Conserver la fiche 2

Fiche 3 1995-05-29

Anglais

Subject field(s)
  • Audiovisual Techniques and Equipment
  • Internet and Telematics
CONT

Recoton develops breakthrough technology which transmits stereo sound through walls, ceilings and floor up to 150 feet. In June 1989, the Federal Communications Commission allocated a band of frequencies stretching from 902 to 928 MHz for wireless, in-home product applications. Recoton, a leading wireless speaker manufacturer, took advantage of the FCC ruling by creating a new speaker system that utilizes this frequency band to transmit clearer, stronger stereo signals throughout your home. You will be able to listen to your stereo, TV, VCR or CD player in any room of your home without having to run miles of speaker wire. The powerful transmitter plugs into a headphone, audio-out or tape-out jack on your stereo or TV component transmitting music wirelessly to your speakers or headphones. One transmitter, unlimited viewers.(En Route, Air-Canada in-flight magazine, June 1994, p. 24).

Terme(s)-clé(s)
  • wireless headphones

Français

Domaine(s)
  • Audiovisuel (techniques et équipement)
  • Internet et télématique

Espagnol

Conserver la fiche 3

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