How would you differentiate Sea Area 1 From Sea Area 2?

•  Sea area 1 uses voice messages, Sea area 2 uses morse code messages

• Sea area 1 uses VHF DSC, while Sea area 2 use VHF DSC and MF DSC

• Sea area 1 covers the 4 areas, while Sea area 2 covers area 1, and sea area 2

• Sea area 1 uses MF/HF DSC, while Sea area 2 uses VHF DSC, and MF/HF DSC

How would you differentiate VHF band from SHF band?

• VHF band uses morse code, SHF band uses voice

• VHF band uses voice, SHF band uses morse code

• VHF for satellite communication, SHF for terrestrial communication

• VHF for terrestrial communication, SHF for satellite communication

What are the (3) controls provided for GMDSS Walkie-talkie?

• Volume

• Squelch

• Antenna Tuner

• Channel Operation

This is one of the DSC call sequences used in order to allow MF/HF system to monitor a number of frequencies MF/HF distress and non-distress calls to ships’ stations.

• Phasing

• Messages

• Dot pattern

• Self-identification

This ITU Recommendation Provides the characteristics of Direct Printing Telegraph Equipment employing automatic identification in the maritime mobile service.

• ITU-R M.493-14

• ITU-R M.541-10

• ITU-R M.625-04

• ITU-R M.690.03

What modes of NBDP that used for broadcasting the messages?

• Automatic retransmission mode

• Forward and error mode

• Frequency mode

• Phasing mode

What is the other term of Radiotelex?

• EGC

• DSC

• SART

• NBDP

What does GMDSS stand for?

• Global Maritime Distress and Safety System

• Global Maritime Distress and Security System

• Global Maritime Distress and Safety Standard

• Global Maritime Distress and Social Security