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Subel. G
6 questions
Subelement G

VHF-DSC Equipment & Comms:

Section 50

VHF-DSC: Other DSC Functions-2:

What information is normally entered in the address book?

  • The vessel's IMN.
  • The vessel's call sign and name.
  • The vessel's IMO number.
  • Correct Answer
    Vessel's name and MMSI number.
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Which of the following statements is not true concerning the DSC call data directory?

  • Correct Answer
    All DSC units typically store all of the Transmitted and Received DSC calls in a single directory.
  • Some DSC units have both a Transmit and Receive message directory or database.
  • Some DSC units have different directories for received calls and sort them by priority.
  • Calls in the directory should not be deleted - they are necessary for inspections & logkeeping.
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Which of the following statements on address book entries is not correct?

  • Shore based telephone numbers may be entered for automatic telephone calls ashore.
  • Correct Answer
    Address book entries can only be used to call shore stations.
  • Public Correspondence Stations may be entered.
  • A vessel's name and MMSI number may be entered.
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The VHF-DSC self-test function (if available) usually performs the following:

  • Transmits a very weak DSC signal which is picked up by the Ch-70 receiver.
  • Transmits a weak voice signal which is picked up on Ch-16.
  • Correct Answer
    Makes a diagnostic test of the system without actually transmitting a signal.
  • Does a check sum of the memory chips.
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What can the operator do to adjust the audible alarm?

  • The operator can choose to disable the audible alarm.
  • VHF DSC units only have visual alarms.
  • Correct Answer
    The alarm cannot be disabled for Distress and Urgency messages.
  • The audible alarm control has the same indication for all four message priorities.
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When initiating a DSC call through the menu system what is the most likely information that will be displayed after making the first correct keystroke?

  • The Telecom-1 menu.
  • The particulars of the previous call.
  • The priority menu.
  • Correct Answer
    The call setup menu.
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