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Subelement I
Inmarsat Equip. & Comms:
Section 66
Inmarsat-C: Equipment and Operations-2:
Which of the following best describes Inmarsat-C operation?
  • Is an analog-based system.
  • Requires a stabilized directional antenna.
  • Provides for voice, TELEX, high and low-speed data and compressed video communications.
  • Correct Answer
    Is a digital store-and-forward system that also provides Enhanced Group Call, data reporting, polling and Distress alerting capabilities.
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Which of the following best describes a shipboard Inmarsat-C system?
  • Correct Answer
    A small, lightweight terminal capable of providing satellite store-and-forward message communications.
  • A satellite communications system that provides real-time connectivity.
  • A small, lightweight terminal used to transmit messages over high frequency (HF) bands to communicate through a satellite.
  • A satellite communications system that also provides continuous Digital Selective Calling coverage for all ocean regions.
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Which of the following modes of communications are available when using Inmarsat-C?
  • Fax reception
  • Correct Answer
    TELEX and e-mail
  • 14400 BPS Data
  • Voice transmissions
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Which mode of communication is possible through an Inmarsat-C SES?
  • SITOR (NBDP)
  • Radiotelephone
  • Correct Answer
    TELEX and e-mail
  • DSC
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It is possible to transmit all of the following via Inmarsat-C from a vessel except?
  • TELEX
  • Text for delivery by fax.
  • Correct Answer
    Voice
  • x.400 data services
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Which of the following best describes the full range of services provided by the Inmarsat-C Satellite system?
  • Polling, enhanced group call, and one-way position and data reporting via satellite.
  • FM voice communications via satellite.
  • Two-way messaging and data communications on a store-and-forward basis.
  • Correct Answer
    Polling, enhanced group call, one-way position and data reporting via satellite, two-way messaging and data communications on a store-and-forward basis.
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