Subelement C – Equipment Operations Flashcards
1-13C1 What is the purpose of the INT-USA control settings on a VHF?
A. To change all VTS frequencies to Duplex so all vessels can receive maneuvering orders.
B. To change all VHF channels from Duplex to Simplex while in U.S. waters.
C. To change certain International Duplex channel assignments to simplex in the U.S. for VTS and other purposes.
D. To change to NOAA weather channels and receive weather broadcasts while in the U.S.
C
1-13C2 VHF ship station transmitters must have the capability of reducing carrier power to: A. 1 watt. B. 10 watts. C. 25 watts. D. 50 watts.
A
1-13C3 The Dual Watch (DW) function is used to:
A. Listen to Ch-70 at the same time while monitoring Ch-16.
B. Sequentially monitor 4 different channels.
C. Sequentially monitoring all VHF channels.
D. Listen on any selected channel while periodically monitoring Ch-16.
D
1-13C4 Which of the following statements best describes the correct setting for manual adjustment of the squelch control?
A. Adjust squelch control to the minimum level necessary to barely suppress any background noise.
B. Always adjust squelch control to its maximum level.
C. Always adjust squelch control to its minimum level.
D. Adjust squelch control to approximately twice the minimum level necessary to barely suppress any background noise.
A
1-13C5 The “Scan” function is used to:
A. Monitor Ch-16 continuously and switching to either Ch-70 or Ch-13 every 5 seconds.
B. Scan Ch-16 for Distress calls.
C. Scan Ch-70 for Distress alerts.
D. Sequentially scan all or selected channels.
D
1-13C6 Why must all VHF Distress, Urgency and Safety communications (as well as VTS traffic calls) be performed in Simplex operating mode?
A. To minimize interference from vessels engaged in routine communications.
B. To ensure that vessels not directly participating in the communications can hear both sides of the radio exchange.
C. To enable an RCC or Coast station to only hear communications from the vessel actually in distress.
D. To allow an RCC or Coast station to determine which transmissions are from other vessels and which transmissions are from the vessel actually in distress.
B
1-14C1 What channel must VHF-FM-equipped vessels monitor at all times when the vessel is at sea? A. Channel 8. B. Channel 16. C. Channel 5A. D. Channel 1A.
B
1-14C2 What is the aircraft frequency and emission used for distress communications? A. 243.000 MHz - F3E. B. 121.500 MHz - F3E. C. 156.525 MHz - F1B. D. 121.500 MHz - A3E.
D
1-14C3 Which VHF channel is used only for digital selective calling? A. Channel 70. B. Channel 16. C. Channel 22A. D. Channel 6.
A
1-14C4 Which channel is utilized for the required bridge-to-bridge watch?
A. DSC on Ch-70.
B. VHF-FM on Ch-16.
C. VHF-FM on Ch-13 in most areas of the continental United States.
D. The vessel’s VHF working frequency.
C
1-14C5 Which channel would most likely be used for routine ship-to-ship voice traffic? A. Ch-16. B. Ch-08. C. Ch-70. D. Ch-22A.
B
1-14C6 What channel would you use to place a call to a shore telephone? A. Ch-16. B. Ch-70. C. Ch-28. D. Ch-06.
C
1-15C1 Which modes could be selected to receive vessel traffic lists from high seas shore stations? A. AM and VHF-FM. B. ARQ and FEC. C. VHF-FM and SSB. D. SSB and FEC.
D
1-15C2 Why must all MF-HF Distress, Urgency and Safety communications take place solely on the 6 assigned frequencies and in the simplex operating mode?
A. For non-GMDSS ships, to maximize the chances for other vessels to receive those communications.
B. Answers a) and c) are both correct.
C. For GMDSS or DSC-equipped ships, to maximize the chances for other vessels to receive those communications following the transmission of a DSC call of the correct priority.
D. To enable an RCC or Coast station to only hear communications from the vessel actually in distress.
B
1-15C3 To set-up the MF/HF transceiver for a voice call to a coast station, the operator must:
A. Select J3E mode for proper SITOR operations.
B. Select F1B mode or J2B mode, depending on the equipment manufacturer.
C. Select J3E mode for proper voice operations.
D. Select F1B/J2B modes or J3E mode, depending on whether FEC or ARQ is preferred.
C