GMDSS: Element 7

1. A When first powered on and when receiving Distress traffic.
2. B When receiving Distress traffic and all of the BALD MSI messages.
3. C To draw the operator’s attention to an unscheduled Distress or Urgency message.
4. D To indicate the loss of NCS CC sync -- preventing the reception of unscheduled EGC messages.

Tip: press A-D to answer