Section-b: Principles of Communications: Key Topic #10: Carrier and Sidebands:

10B1 Which of the following statements describes the carrier?

A. The carrier consists of at least 3 separate but closely spaced frequencies.

B. The carrier is used to modulate the information signal.

C. There are always sidebands on either side of the carrier.

D. The carrier is a Radio Frequency (RF) signal that is modulated to carry intelligence.

10B2 On what frequencies would the J3E emission be used for GMDSS Distress communications?

A. 2182.0 kHz, 16420.0 kHz or 8291.0 kHz.

B. 2182.0, 2187.5 KHz or 8414.5 kHz.

C. 8414.5 KHz, 8291.0 kHz or 8376.5 kHz.

D. 4125.0 kHz, 16420.0 kHz or 4177.5 kHz.

10B3 How many sidebands are present in the J3E mode?

A. Two sidebands and a carrier.

B. One upper sideband.

C. One lower sideband.

D. Two carriers and one sideband.

10B4 What is the signal transmitted in H3E mode?

A. Two sidebands, upper and lower.

B. A reduced carrier and the lower sideband.

C. A full carrier and the upper sideband.

D. A full carrier and both upper and lower sidebands.

10B5 What is the signal transmitted in J2B mode?

A. A full carrier and one sideband.

B. A full carrier and two sidebands.

C. An upper sideband of 2 alternating tones.

D. An upper sideband of a single tone switched on and off.

10B6 Which of the following statements is true?

A. An RF carrier is always required to carry the information.

B. There is only a single tone used in J2B mode.

C. There are a carrier and two sidebands in H3E mode.

D. There are two tones used in J2B mode.

Answers: 10B1 – D 10B2 - A 10B3 - B 10B4 – C 10B5 – C 10B6 - D

Section-b: Principles of Communications: Key Topic #11: Channel Spacing:

11B1 What is the channel spacing for MF-HF voice frequencies?

A. 500 Hz

B. 2.8 kHz

C. 3.0 kHz

D. 3.5 kHz

11B2 What is the channel spacing for authorized F1B/J2B frequencies?

A. 170 Hz

B. 300 Hz

C. 3.0 kHz

D. 500 Hz

11B3 You look up a frequency table and all the listings end in either .0 or .5 kHz. What kind of emission is used with these frequencies?

A. F1B/J2B SITOR (NBDP)

B. J3E SSB Voice

C. F3E FM Voice

D. G3E FM Voice

11B4 How many SITOR (NBDP) signals can occupy the space of one voice signal?

A. 10

B. 6

C. 4

D. 2

11B5 Which emission mode occupies the most bandwidth?

A. J2B

B. F3E

C. J3E

D. F1B

11B6 Which mode occupies the least bandwidth?

A. H3E

B. A3E

C. J2B

D. F3E

Answers: 11B1 - C 11B2 - D 11B3 - A 11B4 - B 11B5 - B 11B6 - C

Section-b: Principles of Communications: Key Topic #12: Antennas:

12B1 A vertical (whip) antenna has a radiation pattern best described by?

A. A figure eight

B. A circle

C. A cardioid

D. An ellipse

12B2 Why is an antenna tuner required for mf-hf transmissions?

A. The antenna tuner calculates the proper spectrum band for the operator to use.

B. To ensure transmissions are restricted to legal marine frequencies.

C. The length of the physically-fixed antenna must be electrically matched to the intended frequency of operation.

D. The antenna tuner indicates whether the ionosphere is ready to reflect a transmission properly.

12B3 A vertical quarter wave antenna with a good ground connection will:

A. Radiate directionally due to being grounded.

B. Not function due to being grounded.

C. Only be used in Satellite communications.

D. Radiate omni-directionally.

12B4 What is the most common type of antenna for GMDSS MF-HF?

A. Vertically polarized whip antenna

B. Horizontally polarized long wire antenna.

C. Horizontally polarized vertical whip antenna.

D. Satellite radome with vertical polarization.

12B5 What is the purpose or function of the antenna coupler?

A. Electrically matching the antenna system to the transmit frequency.

B. Changing the overall wavelength of the antenna system (in addition to the fixed length whip.)

C. Enabling maximum transmitted signal on the band chosen by the operator.

D. All of these answers are functions of the antenna coupler.

12B6 What advantage does a vertical whip have over a long wire?

A. It radiates equally well in all directions.

B. It radiates directionally for better propagation.

C. It radiates a strong signal vertically.

D. It radiates more signal fore and aft.

Answers: 12B1 - B 12B2 - C 12B3 - D 12B4 - A 12B5 - D 12B6 - A

Section-C: F.C.C. Rules & Regulations: Key Topic #13: Inspections and Exemptions:

13C1 How often must a compulsory vessel's GMDSS radio station be inspected?

A. Annually, by the FCC or designated authority.

B. Annually, by the U.S. Coast Guard.

C. Annually, by the FCC, and every six months if the vessel sails outside of Sea Areas A1 and A2.

D. The FCC's annual inspection may be waived if and only if monthly inspections are performed by the vessel's on-board GMDSS Radio Maintainer.

13C2 What periodic inspection is required in order to remain in compliance with the regulations regarding GMDSS ship radio station inspections?

A. U.S. Coast Guard annual inspection.

B. An inspection at least once every 12 months by the FCC or a holder of a GMDSS Maintainers license.

C. FCC inspection every five years.

D. Periodic inspections not required if on board maintainers perform routine preventive maintenance.

13C3 Which statement is false regarding a GMDSS-equipped ship?

A. A conditional or partial exemption may be granted, in exceptional circumstances, for a single voyage outside the sea area for which the vessel is equipped.

B. The regulations apply to all passenger ships regardless of size and cargo ships of 300 gross tons and upwards.

C. Ships must have the required equipment inspected at least once every five years.

D. Ships must carry at least two persons holding a GMDSS Radio Operator's license for Distress and Safety radio-communications purposes.

13C4 Which statement is false regarding a GMDSS equipped ship?

A. Ships must have the required equipment inspected at least once every 12 months.

B. The regulations apply to all passenger ships regardless of size and cargo ships of 300 gross tons and upwards.

C. Ships must carry at least two persons holding a GMDSS Radio Operator's license for Distress and Safety radio-communications purposes.

D. A conditional or partial exemption may not be granted, in exceptional circumstances, for a single voyage outside the sea area for which the ship is equipped.

13C5 During an annual GMDSS station inspection:

A. All required documents and publications might have to be produced and GMDSS operators may be required to demonstrate equipment competencies.

B. Licensed GMDSS operators may not be required to demonstrate equipment competencies but all required equipment must be fully operational.

C. All required equipment must be fully operational and any required publications that are not current must be on order.

D. GMDSS operators may be required to demonstrate equipment competencies and any of required equipment that is not fully operational can be repaired at the next port of call as long as there is functional duplication.

13C6 Which situation is least likely to result in an inspection of the radio installation by foreign governments or administrations?

A. When the ship's station license cannot be produced without delay.

B. When a ship visits a port for the first time.

C. When operational irregularities are observed.

D. When compulsory equipment is found to be inoperative.

Answers: 13C1 - A 13C2 - B 13C3 - C 13C4 - D 13C5 - A 13C6 - B

Section-C: F.C.C. Rules & Regulations: Key Topic #14: Required Documents and Publications:

14C1 Which of the following references should be consulted for information on the proper setup and use of GMDSS equipment?

A. ITU List of Equipment Operations.

B. 47 CFR Part 80 Subpart W.

C. Instructions are available through the Maritime Safety Information (MSI) system.

D. The manufacturer's operating manuals.

14C2 Where can GMDSS regulations pertaining specifically to U.S.-flag vessels be found?

A. These are located in 47 CFR Part 80.

B. These are located in CCIR #476.

C. These are located in FCC Part 83.

D. These are published only by the U.S. Coast Guard.

14C3 What publications should the GMDSS Radio Operator consult to review the proper procedures to be followed in Distress situations under GMDSS?

A. The manufacturer’s technical manuals.

B. 47 CFR Part 80 Subpart W.

C. The manufacturer's operator manuals.

D. 47 CFR Part 90 Subpart V.

14C4 Which of the following documents or publications are required by the FCC for GMDSS vessels on international voyages (other than the Great Lakes)?

A. IMO master plan of shore-based facilities (or substitute), station logs, appropriate operator licenses, Inmarsat handbook for GMDSS.

B. NGA Pub. 117 (or substitute), station logs, appropriate operator licenses, IAMSAR manual volume III.

C. Part 80 FCC rules, station logs, station licenses, ITU publications, ITU manual for Maritime Mobile stations.

D. Part 80 FCC rules, station logs, station licenses, ITU publications, IMO manual for Maritime Mobile stations.

14C5 Which of the following documents or publications are required by Part 80 of the FCC rules for vessels on international voyages (other than the Great Lakes)?

A. Appropriate Safety Convention Certificate, ITU Master Plan of GMDSS Coast stations, and ITU manual for Maritime Mobile stations.

B. ITU Master Plan of GMDSS Coast stations, ITU manual for Maritime Mobile stations, ITU List IV & List V.

C. ITU List IV & List V, Appropriate Safety Convention Certificate & ITU manual for Maritime Mobile stations.

D. ITU List IV & List V, Appropriate Safety Convention Certificate & IMO manual for Maritime Mobile stations.

14C6 Which of the following references should be consulted to identify the name of a vessel based on its Maritime Mobile Service Identity?

A. ITU list of Coast Stations.

B. ITU List of Radio-determination and Ship Stations.

C. ITU Master Plan of Shore-Based Facilities.

D. ITU List of Ship Stations and Maritime Mobile Service Identity Assignments.

Answers: 14C1 - D 14C2 - A 14C3 - B 14C4 - C 14C5 - C 14C6 - D

Section-C: F.C.C. Rules & Regulations: Key Topic #15: Maintenance:

15C1 Which of the following maintenance functions is not the responsibility of the GMDSS Radio Operator?

A. Visual inspection of equipment, including the antenna and associated components.

B. Perform on-the-air verification checks.

C. Aligning the power output stage for maximum power.

D. Perform scheduled testing of the battery's charged condition.

15C2 When may a compulsory vessel not be allowed to leave port?

A. When the vessel is in an over-carriage condition.

B. When the vessel has arranged for both duplication of equipment and shore-based maintenance.

C. When the vessel is carrying only two licensed GMDSS Radio Operators and is capable of performing all required functions.

D. When the vessel has replaced a required piece of GMDSS-related equipment but its performance has not been verified or logged.

15C3 Which statement is false regarding the maintenance of GMDSS equipment at sea?

A. The GMDSS maintainer may not be the person designated to have primary responsibility for radio-communications during Distress incidents even if licensed as an operator.

B. Ships must carry at least one person who qualifies as a GMDSS maintainer for the maintenance and repair of equipment if the at-sea maintenance option is selected.

C. All at-sea maintenance and repairs must be performed by, or under the supervision of a person holding a GMDSS Maintainer license.

D. The GMDSS maintainer may be the person responsible for ensuring that the watches are properly maintained and that the proper guard channels and the vessel's position are entered into the DSC equipment.

15C4 Which of the following service or maintenance functions may NOT be performed by the holder of a GMDSS Radio Operator License?

A. Reset tripped circuit breakers or replace defective fuses.

B. Any adjustments or maintenance that may affect the proper operation of the station.

C. Routine battery maintenance if used as part of the GMDSS station.

D. Replacement of consumable items such as paper, ribbons, etc.

15C5 What are the conditions, under GMDSS, whereby a ship is NOT allowed to depart from any port?

A. The vessel is carrying more than the required number of qualified GMDSS radio operators.

B. The vessel is not capable of performing all required Distress and Safety functions.

C. The vessel has a temporary waiver of its radio license and Safety Certificate.

D. The vessel is not carrying a GMDSS radio maintainer, but has provided for shoreside maintenance plus duplication of equipment if required.

15C6 What determines the spares and maintenance materials requirements for the SITOR (NBDP) equipment under GMDSS?

A. 47 CFR Part 80

B. IMO Circular "Equipment Spares".

C. The recommendations of the manufacturer.

D. The GMDSS Maintainer's requirements.

Answers: 15C1 - C 15C2 - D 15C3 - A 15C4 - B 15C5 - B 15C6 - C

Section-C: F.C.C. Rules & Regulations: Key Topic #16: License and Personnel Requirements:

16C1 Which FCC license meets the requirement to serve as a GMDSS operator?

A. General Radiotelephone Operator’s License.

B. GMDSS Radio Operator’s License.

C. Marine Radio Operator’s Permit.

D. GMDSS Radio Maintainer’s License.

16C2 Which of the following statements concerning GMDSS Radio Operator requirements is false?

A. Each compulsory vessel must carry at least two licensed GMDSS Radio Operators at all times while at sea.

B. Each compulsory vessel must carry at least two licensed GMDSS Radio Operators at all times while at sea and may elect to carry a GMDSS Radio Maintainer as well.

C. All communications involving Safety of life at sea must be logged as long as the compulsory vessel was not involved in such communications.

D. While at sea, adjustments to, and the maintaining of, GMDSS equipment may be performed by the GMDSS Radio Operator as long as the work is supervised by an on-board licensed GMDSS Radio Maintainer.

16C3 Which FCC license meets the requirements to perform or supervise the performance of at-sea adjustments, servicing, or maintenance which may affect the proper operation of the GMDSS station?

A. General Radiotelephone Operator’s License with Shipboard RADAR endorsement.

B. Marine Radio Operator’s Permit or GMDSS Maintainer’s license.

C. GMDSS Radio Operator’s license or Marine Radio Operator’s Permit.

D. GMDSS Operator’s/Maintainer’s license or GMDSS Maintainer’s license.

16C4 Which statement is false regarding the radio operator requirements for a GMDSS-equipped ship station?

A. Maintaining a record of all incidents connected with the radio-communications service that appear to be of importance to Safety of life at sea is not required.

B. One of the qualified GMDSS radio operators must be designated to have primary responsibility for radio-communications during Distress incidents.

C. A qualified GMDSS radio operator, and a qualified backup, must be designated to perform Distress, Urgency and Safety communications.

D. While at sea, all adjustments or radio installations, servicing or maintenance of such installations that may affect the proper operation of the GMDSS station must be performed by, or under the supervision of, a qualified GMDSS radio maintainer.

16C5 Which of the following are personnel, functional, or equipment FCC requirements of the GMDSS?

A. One FCC licensed GMDSS radio operator in sea areas A1 & A2, two FCC licensed GMDSS radio operators in sea areas A3 & A4 and equipment carriage based on intended sea area of operations.

B. Distress alerting and response, two USCG STCW GMDSS watchstanders, equipment carriage based on intended sea area of operations.

C. Equipment carriage reduced for sea areas A3 & A4, Distress alerting and response and two FCC licensed GMDSS radio operators.

D. Equipment carriage based on intended sea area of operations, distress alerting and response and two FCC licensed GMDSS radio operators.

16C6 How many GMDSS radio maintainers must be carried aboard a compulsory vessel if the At-Sea maintenance method is used?

A. One regardless of sea area of operation.

B. Two in Sea Areas A3 and A4.

C. Two in Sea Area A1.

D. None of these answers are correct.

Answers: 16C1 - B 16C2 - C 16C3 - D 16C4 - A 16C5 - D 16C6 - A