7-A-085: MF-HF: DSC Controller Call Programming
7-85J1:
What is the purpose of the MF/HF DSC controller ?
Both a) and b) are crucial functions of the DSC Controller.
It provides for the formatting and transmission of outgoing DSC calls.
It permits control of transceiver operations via an interface.
It provides the scanning watch receiver capability on the 6 MF/HF DSC frequencies.
7-85J2:
A "Distress Hot Key" MF/HF DSC Distress Alert:
Will be transmitted on 2187.5 kHz or another DSC frequency, depending on the manufacturer.
Will always be transmitted on 2187.5 kHz and 8414.5 kHz to trip DSC alarms on the mandatory MF/HF DSC watch frequencies.
Will always be transmitted on 2187.5 kHz to alert the nearest vessels and coast stations.
None of the above
7-85J3:
A Distress Priority DSC call may be formatted and transmitted specifying and requesting:
Nature of Distress or alternate frequency but not both in a single call, vessel position or alternate frequency/emission but not both in a single call, voice or TELEX follow-up communications.
Nature of Distress, vessel position, follow-on frequency, only voice follow-on communications.
Nature of Distress or alternate frequency but not both in a single call, vessel position or alternate frequency/emission but not both in a single call, only TELEX follow-up communications
Nature of Distress, vessel position, follow-on frequency, only TELEX follow-on communications.
7-85J4:
A multi-frequency MF/HF DSC Distress Alert:
Either a) or b), depending on the manufacturer.
Must be transmitted in ascending order of propagation radius to alert nearby ships first.
May be transmitted on the mandatory MF/HF DSC watch frequencies first, and then on the others.
May be transmitted in any order programmed by the GMDSSS operator.
7-85J5:
To make a call to another vessel requesting voice communications regarding important company business, the GMDSS operator should:
None of the above
Select Urgency priority, enter other vessel's MMSI, specify legal alternate frequency, F1B emission and transmit the properly formatted DSC call.
Select Routine priority, enter other vessel's MMSI, specify legal alternate frequency, J2B emission and transmit the properly formatted DSC call.
Select Routine priority, enter own vessel's MMSI, specify legal alternate frequency, J3E emission and transmit the properly formatted DSC call.
7-85J6:
To make a call to another vessel requesting TELEX communications regarding important company business, the GMDSS operator should:
Select Routine priority, enter other vessel's MMSI, specify legal alternate frequency, F1B emission and transmit the properly formatted DSC call.
Select Urgency priority, enter other vessel's MMSI, specify legal alternate frequency, F1B emission and transmit the properly formatted DSC call.
Select Routine priority, enter own vessel's MMSI, specify legal alternate frequency, F1B emission and transmit the properly formatted DSC call.
Select Routine priority, enter other vessel's SELCALL for TELEX specify legal alternate frequency, F1B emission and transmit the properly formatted DSC call.
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Color key:
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● = Unseen
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● = Weak
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● = Review
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● = Learned
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● = Incorrect answer
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