Which frequency is used for International MF calling and distress (SOLAS)?

Which frequency is used for International MF calling and distress (SOLAS)?

• A. 2182 International (MF)
• B. 156.8 MHz
• C. 156.525 MHz
• D. 2187.5 kHz

Answer: (A)

Long-range calling and distress on the MF band uses a single designated frequency. The international standard for SOLAS is 2182 kHz, used for voice calling and distress across oceans. This frequency is monitored worldwide to ensure ships and coast stations can hear and respond to urgent alerts when VHF isn’t practical, providing broad coverage over long distances. The other options are not MF distress frequencies: 156.8 MHz is VHF Channel 16, the primary calling channel on VHF for near-shorizon communications; 156.525 MHz is the VHF DSC distress/calling frequency; and 2187.5 kHz is not the official SOLAS MF distress frequency.

Long-range calling and distress on the MF band uses a single designated frequency. The international standard for SOLAS is 2182 kHz, used for voice calling and distress across oceans. This frequency is monitored worldwide to ensure ships and coast stations can hear and respond to urgent alerts when VHF isn’t practical, providing broad coverage over long distances.

The other options are not MF distress frequencies: 156.8 MHz is VHF Channel 16, the primary calling channel on VHF for near-shorizon communications; 156.525 MHz is the VHF DSC distress/calling frequency; and 2187.5 kHz is not the official SOLAS MF distress frequency.