GMDSS Maintainer: Element 9

1. A “ECM 0071” is displayed indicating the called station ID was not properly decoded.
2. B “ECM 00F0” is displayed indicating the terminal’s failure to transmit over the Inmarsat network.
3. C “77F0h” or “77F1h” is displayed indicating the terminal is not registered to the MPDS network.
4. D “00F0h” or “00F1h” is displayed indicating the terminal is not registered to the MPDS network.

Tip: press A-D to answer