GMDSS Maintainer: Element 9

1. A MMSI 003669999 is an established group call that includes all U.S. Coast Guard Stations.
2. B DSC calls to MMSI 003669999 will be received by all DSC-equipped USCG coast stations within radio range.
3. C DSC calls to MMSI 003669999 may not be used to test MF/HF DSC equipment aboard ships.
4. D DSC calls to MMSI 003669999 may result in an automated acknowledgement from USCG coast stations.

Tip: press A-D to answer