![]() In VHF bands, only single-frequency call attempts are used. In MF and HF bands, distress alertĪttempts may be sent as a single-frequency attempt or a multi-frequency attempt on up to sixįrequencies within one minute. Recorded position and, if entered, the nature of the distress. In which a message format is transmitted identifying the station in distress, giving its last A distress alert sent by DSC consists of one or more distress alert attempts Generate the appropriate distress call format in the most recent version of Recommen-ĭation ITU-R M.541. If time is insufficient, in relation to a known geographical locationĭSC procedures use a combination of automated functions and manual intervention to ![]() ![]() ![]() the position, given as the latitude and longitude, or if the latitude and.the MMSI (if the initial alert has been sent by DSC). ![]()
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