This ITU recommendation contains the operational procedures of Digital Selective Calling (DSC) Equipment in The Maritime Mobile Services.

• ITU-R M.690-03

• ITU-R M.625-04

• ITU-R M.541-10

• ITU-R M.493-14

It is a brief burst of digitized information transmitted

from one station to alert another station or stations.

• Urgency message

• Safety message

• EGC message

• DSC message

This is one of the DSC call sequences used in providing information to the receiver to permit correct bit phasing and unambiguous determination of the positions of the characters within the call sequence.

• Self-Identification

• Dot Pattern

• Messages

• Phasing

It is a technology used in maritime communication, primarily for distress, urgency, safety and routine communication between ships and shore stations.

• Global Maritime Distress and Safety System

• Digital Selective Calling

• Narrowband direct-printing

• Forward Error Correction

What is an ITU-Radiocommunication Sector that sets the standards and protocols for Digital selective-calling for use in the maritime mobile service general purpose and simplified version?

• ITU-R M.690-03

• ITU-R M.625-04

• ITU-R M.541-10

• ITU-R M.493-14

What channel intended use for VHF DSC distress transmitter?

• Ch. 16

• Ch. 70

• 2187.5 kHz

• 2182.0 kHz

What channel intended use for MF DSC distress transmitter?

• Ch. 16

• Ch. 70

• 2187.5 kHz

• 2182.0 kHz

What is the band name that has a frequency range of 300-3000 kHz?

• Very Low Frequency (VLF)

• Medium Frequency (MF)

• Very High Frequency (VHF)

• Super High Frequency (SHF)

What is the band name that has a frequency range of 3-30 kHz?

• Very Low Frequency (VLF)

• Medium Frequency (MF)

• Very High Frequency (VHF)

• Super High Frequency (SHF)

What is the band name that has a frequency range of 30-300 MHz?

• Very Low Frequency (VLF)

• Medium Frequency (MF)

• Very High Frequency (VHF)

• Super High Frequency (SHF)