🔍 Key Concepts

• SART (Search and Rescue Transponder) operates in the 9 GHz (3 cm) radar band • How radar sweeps in frequency across a band to create a pattern on the searching ship’s radar • The specific pattern of sweeps and number of sweeps that defines a SART response

💭 Think About

• Look for the option that clearly mentions a sweep across the entire 3 cm radar band, since SART must be visible on X‑band (9 GHz) radar • Compare which choice has a forward and return sweep sequence rather than just one kind of sweep • Check the total number of sweeps in each choice and think which number is normally associated with SART operation in training materials

✅ Before You Answer

• Confirm that the answer you pick mentions the correct radar band (3 cm / 9 GHz) • Verify that the signal description includes a sweep across the band and a returning sweep (out and back), not just a single direction • Make sure the total number of sweeps matches what you’ve seen in SART diagrams and descriptions in SOLAS / GMDSS study material