Gmdss Exam Actual 600 Questions And 100 Verified

Gmdss Exam (Actual / 600 Questions And 100% Verified Correct Answers

1A1 What is the fundamental concept of the GMDSS?

• It is intended to automate and improve emergency

communications in the maritime industry.

1A2 The primary purpose of the GMDSS is.

• Automate and improve emergency communications for the

world's shipping industry.

1A3What is the basic concept of GMDSS?

• SAR authorities ashore can be alerted to a distress situation

and shipping in the vicinity can be requested to participate in SAR operations.

1A4 GMDSS is primarily a system based on?

• The linking of search and rescue authorities ashore with

shipping in the immediate vicinity of a ship in Distress or in need of assistance.

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10B4 What is the signal transmitted in H3E mode?

• A full carrier and the upper sideband.

10B5 What is the signal transmitted in J2B mode?

• An upper sideband of 2 alternating tones.

10B6 Which of the following statements is true?

• There are two tones used in J2B mode.

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

• 3.0 kHz

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

• 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? 2 / 4

A. F1B/J2B SITOR (NBDP)

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

• 6

11B5 Which emission mode occupies the most bandwidth?

B. F3E

11B6 Which mode occupies the least bandwidth?

C. J2B

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

• A circle

12B2 Why is an antenna tuner required for MF-HF transmissions?

• The length of the physically-fixed antenna must be

electrically matched to the intended frequency of operation. 3 / 4

12B3 A vertical quarter wave antenna with a good ground

connection will:

• Radiate omni-directionally.

12B4 What is the most common type of antenna for GMDSS

MF-HF?

• Vertically polarized whip antenna

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

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

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

• It radiates equally well in all directions.

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

• Annually, by the FCC or designated authority.
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