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Subel. J
6 questions
Subelement J
MF-HF Equip. and Comms:
Section 95
MF-HF FEC Operation-2
If the vessel is within range of NAVTEX broadcasts and both the Inmarsat-C and the NAVTEX receiver are inoperative the GMDSS operator should:
  • Select 518 kHz ARQ TELEX on the MF/HF console to receive MSI.
  • Request repairs of the Sat-C system and wait until within range of NAVTEX.
  • Correct Answer
    Select 518 kHz FEC TELEX on the MF/HF console to receive MSI.
  • Select an HF MSI frequency and ARQ TELEX mode to receive MSI.
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If the vessel is beyond range of NAVTEX broadcasts and the Inmarsat-C system fails, the GMDSS operator must:
  • Select 518 kHz ARQ TELEX on the MF/HF console to receive MSI.
  • Request repairs of the Sat-C system and wait until within range of NAVTEX.
  • Select 518 kHz FEC TELEX on the MF/HF console to receive MSI.
  • Correct Answer
    Select an HF MSI frequency and FEC TELEX mode to receive MSI.
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If the vessel is experiencing atmospheric interference with NAVTEX broadcasts, especially in the tropics, the GMDSS operator should:
  • Correct Answer
    Select one of the 8 HF MSI frequencies and set-up the transceiver in FEC TELEX mode.
  • Select one of the 6 HF MSI frequencies and set-up the transceiver in ARQ TELEX mode.
  • Select one of the 6 MF MSI frequencies and set-up the transceiver in FEC TELEX mode.
  • Select the MF MSI frequency dedicated to tropical MSI and set-up the transceiver in FEC TELEX mode.
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Why must the GMDSS operator be able to set-up FEC & ARQ modes and differentiate between them?
  • The proper mode of SFEC must be selected for reception of HF MSI and ARQ selected for initial follow-on TELEX communications in a Distress situation
  • Correct Answer
    The proper mode must be selected for follow-on TELEX communications in a Distress situation and for the reception of HF MSI.
  • The ARQ TELEX mode must be selected for follow-on TELEX communications in a Distress situation and the BFEC TELEX mode selected for reception of HF MSI.
  • The BFEC TELEX mode must be selected for follow-on TELEX communications in a Distress situation and the ARQ TELEX mode selected for reception of HF MSI.
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BFEC SITOR (NBDP) transmissions might be used to?
  • Receive Coast station traffic lists, NAVTEX and VHF MSI broadcasts.
  • Correct Answer
    Send and receive Distress TELEX communications and receive HF MSI or NAVTEX.
  • Receive weather messages or download ARQ Coast Station traffic lists.
  • Receive weather messages and send vessel weather OBS messages.
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FEC SITOR (NBDP) transmissions are normally used to?
  • Receive Coast station traffic lists, NAVTEX and VHF MSI broadcasts.
  • Receive weather messages, Coast Station traffic lists and company messages.
  • Correct Answer
    Receive HF MSI and NAVTEX.
  • Receive company communications sent through coast stations.
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