Which system has the least effective radius...

Question 1 of 292189s56uFYYR5cYflIbyyvk

Which system has the least effective radius of operation?

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Question 1 of 29218

Q

Which system has the least effective radius of operation?

🔍 Key Concepts

• GMDSS communication systems and their typical coverage areas • Differences between VHF, MF, and HF frequency ranges and how they propagate • The specific service and range intent of NAVTEX compared with voice/data distress systems

💭 Think About

• Rank each option from largest to smallest normal operating range based on its frequency band and purpose • Ask yourself which of these is intended primarily for local/short-range coverage versus regional or long-range coverage • Consider whether the system is designed for distress and calling or for navigational/meteorological broadcasts over wider sea areas

✅ Before You Answer

• Verify the typical range of VHF DSC (Sea Area A1) versus MF and HF systems in GMDSS • Check what frequency band NAVTEX uses and its normal designed coverage radius from a coastal station • Confirm which of these systems are used for long-range communications (ocean-crossing) versus near-coastal operations