FCC Commercial Element 7 pool, section 86

Subelement J

MF-HF Equip. and Comms:

Section 86

MF-HF DSC Controller Call Programming

86J1

Which of these is not a primary purpose of the MF/HF DSC controller?

A.
It provides for the electronic memory of incoming and outgoing DSC calls.
B.
It permits control of transceiver operations in response to an incoming DSC call.
C.
It provides for the formatting and transmission of outgoing DSC calls.
Correct Answer
D.
It provides the scanning watch receiver capability on the 6 MF/HF DSC frequencies.

86J1

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86J2

A "Distress Hot Key" MF/HF DSC Distress alert:

Correct Answer
A.
Will be transmitted on 2187.5 kHz or another DSC frequency, depending on the manufacturer.
B.
Will always be transmitted on 2187.5 kHz and 8414.5 kHz to trip DSC alarms on the mandatory MF/HF DSC watch frequencies.
C.
Will always be transmitted on 2187.5 kHz first to alert the nearest vessels and coast stations.
D.
Will always be sent first on 16804.5 kHz to reach coast stations far away from the vessel.

86J2

(A). A "Distress Hot Key" MF/HF DSC Distress alert will be transmitted on 2187.5 kHz or another DSC frequency, depending on the manufacturer.

§ 80.304 Watch requirement during silence periods.

Each ship station operating on telephony on frequencies in the band 1605-3500 kHz must maintain a watch on the frequency 2182 kHz. This watch must be maintained at least twice each hour for 3 minutes commencing at x h.00 and x h.30 Coordinated Universal Time (UTC) using either a loudspeaker or headphone. Except for distress, urgency or safety messages, ship stations must not transmit during the silence periods on 2182 kHz.

Regarding 2,182 kHz see § 80.304

For a great reference on various topics, see the Title 47 Chapter I Subchapter D Part 80 - STATIONS IN THE MARITIME SERVICES on Code of Federal Regulations

Last edited by markadlerdallas. Register to edit

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86J3

A Distress Priority DSC call may be formatted and transmitted specifying and requesting:

A.
Nature of Distress, vessel position, follow-on frequency, only voice follow-on communications.
Correct Answer
B.
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.
C.
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
D.
Nature of Distress, vessel position, follow-on frequency, only TELEX follow-on communications.

86J3

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86J4

Which of these statements regarding a multi-frequency MF/HF DSC Distress alert is FALSE?

A.
Some units transmit on the mandatory MF/HF DSC watch frequencies first, and then on the others.
B.
Some units transmit in ascending order of propagation radius to alert nearby ships or shore stations first.
Correct Answer
C.
May be transmitted in any order programmed by the GMDSSS operator.
D.
Multi-frequency alerts work quite differently, depending on the manufacturer and require care and understanding of the feature.

86J4

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86J5

To make a call to another vessel requesting voice communications regarding important company business, the GMDSS operator should:

A.
Select Routine priority, enter other vessel's MMSI, specify legal alternate frequency, J2B emission and transmit the properly formatted DSC call.
B.
Select Routine priority, enter own vessel's MMSI, specify legal alternate frequency, J3E emission and transmit the properly formatted DSC call.
Correct Answer
C.
None of these answers is correct.
D.
Select Urgency priority, enter other vessel's MMSI, specify legal alternate frequency, F1B emission and transmit the properly formatted DSC call.

86J5

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86J6

To make a call to another vessel requesting TELEX communications regarding important company business, the GMDSS operator should:

A.
Select Urgency priority, enter other vessel's MMSI, specify legal alternate frequency, F1B emission and transmit the properly formatted DSC call.
B.
Select Routine priority, enter own vessel's MMSI, specify legal alternate frequency, F1B emission and transmit the properly formatted DSC call.
C.
Select Routine priority, enter other vessel's SELCAL for TELEX, specify legal alternate frequency, F1B emission and transmit the properly formatted DSC call.
Correct Answer
D.
Select Routine priority, enter other vessel's MMSI, specify legal alternate frequency, F1B emission and transmit the properly formatted DSC call.

86J6

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