If the vessel is experiencing atmospheric interference with NAVTEX broadcasts, especially in the tropics, the GMDSS operator should:

Correct Answer: Option C — Select one of the 8 HF MSI frequencies and set-up the transceiver in FEC TELEX mode.

Under USCG National Maritime Center examination standards, the accepted correct answer is: Select one of the 8 HF MSI frequencies and set-up the transceiver in FEC TELEX mode..