GOC & LRC Frequencies & Transmission Modes Quiz

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1. What is the primary use of VHF Channel 16?

Distress, safety, and calling
Routine ship-to-ship communication
Port operations
Onboard communications

2. Which frequency is designated for MF DSC distress alerts?

2187.5 kHz
2182 kHz
2177 kHz
2190 kHz

3. What is the characteristic of simplex communication?

Transmission and reception occur on the same frequency
Uses two frequencies simultaneously
Allows simultaneous two-way communication
Requires a repeater station

4. Which VHF channel is exclusively used for DSC?

Channel 70
Channel 16
Channel 13
Channel 6

5. What is the main advantage of duplex communication over simplex?

Allows simultaneous two-way communication
Uses less bandwidth
Simpler equipment
Longer range

6. Which channel is designated for inter-ship navigation safety communications?

Channel 13
Channel 16
Channel 70
Channel 6

7. What is the frequency for VHF DSC distress alerts?

156.525 MHz
156.8 MHz
156.3 MHz
156.6 MHz

8. Which of the following channels is used for ship-to-ship safety communications?

Channel 13
Channel 70
Channel 16
Channel 6

9. What is the primary purpose of Channel 6 in VHF marine communication?

Communication between ship stations and aircraft engaged in SAR operations
Onboard communications
Port operations
Routine ship-to-ship communication

10. What is the mode of transmission for VHF Channel 16?

Simplex
Duplex
Half-duplex
Full-duplex

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