What is the purpose of the 2182 kHz frequency in EPIRB signaling?

• A. It carries the initial alarm following the distress signal
• B. It carries voice communications
• C. It handles test signals
• D. It is used for ship-to-ship communications

Answer: (A)

The key idea is that multiple channels support different parts of an emergency alert. For EPIRB signaling, the 2182 kHz frequency serves to broadcast the initial alarm so nearby vessels and shore stations immediately hear that distress conditions exist. This MF channel is monitored by maritime coast stations and ships, providing a rapid, human-alert path that kicks off rescue coordination while the satellite beacon (406 MHz) handles transmitting the beacon’s identity and precise location. In this system, 2182 kHz is not for ongoing voice communications or for testing; its main role is to make sure an alert is noticed right away so responders can start acting quickly.