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Multiple Choice

NAVTEX is true for MSI broadcasts?

NAVTEX delivers Maritime Safety Information as a one-way broadcast from coast stations on a dedicated 518 kHz channel. The data is encoded with forward error correction using the SITOR-B mode, which helps the receiver recover the message even if the signal is weak or noisy. This is why MSI broadcasts are received using SITOR-B or a similar FEC-enabled approach. The other statements don’t fit because MSI is not transmitted by the ship on 518 kHz, NAVTEX reception does not occur on 2182 kHz SSB, and NAVTEX MSI uses SITOR-B (not SITOR-A) or ARQ mode.

NAVTEX delivers Maritime Safety Information as a one-way broadcast from coast stations on a dedicated 518 kHz channel. The data is encoded with forward error correction using the SITOR-B mode, which helps the receiver recover the message even if the signal is weak or noisy. This is why MSI broadcasts are received using SITOR-B or a similar FEC-enabled approach.

The other statements don’t fit because MSI is not transmitted by the ship on 518 kHz, NAVTEX reception does not occur on 2182 kHz SSB, and NAVTEX MSI uses SITOR-B (not SITOR-A) or ARQ mode.