Safety, Fire & Survival · GMDSS — EPIRB
A modern satellite EPIRB transmits its distress alert to the COSPAS-SARSAT system on:
- A406 MHz (with a 121.5 MHz homing signal)✓ Correct
- B121.5 MHz only
- C2182 kHz
- DChannel 16 VHF
Explanation
The 406 MHz EPIRB sends a digital distress message (including the registered identity and, often, GPS position) to the satellite system, plus a low-power 121.5 MHz signal for final homing by SAR units.
Authority: COSPAS-SARSAT; SOLAS Chapter IV (GMDSS)
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