Which maintenance functions can a GMDSS Radio Operator perform?

Correct Answer: Option A — The Operator is responsible for ensuring that INMARSAT antennas are free of built-up soot and clear of obstacles.

GMDSS radio operators are responsible for basic equipment maintenance, such as ensuring antennas are clear of obstructions like soot or salt buildup. Per 47 CFR Part 80, complex internal repairs or adjustments are restricted to licensed GMDSS maintainers to ensure equipment remains compliant with technical and regulatory standards.