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The US coast guard is upgrading the high frequency digital selective calling (dsc) to allow automated…

NAVAREA XII 141/07

issued: 2007-06-14 14:40Z
status: cancelled 2008-02-16 08:33Z (archive)
authority: RCCGD DSC SYSTEM E-MAIL 141359Z JUN 07.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

THE US COAST GUARD IS UPGRADING THE HIGH FREQUENCY DIGITAL
SELECTIVE CALLING (DSC) TO ALLOW AUTOMATED ACKNOWLEDGEMENT
OF TEST CALLS. THIS WILL REQUIRE US COAST GUARD COMSTA KODIAK DSC
SYSTEM TO BE OFF AIR FOR APPROXIMATELY EIGHT HOURS BEGINNING
191600Z JUN. COMSTA KODIAK (NOJ) WILL BE MONITORING GMDSS VOICE
FREQUENCIES ON 4125.0 KHZ (2300Z - 1100Z), 6215.0 KHZ (24 HRS),
8291.0 KHZ, 12290 KHZ (1100Z - 2300Z). REVISED TEST CALL PROCEDURES
WILL BE PUBLISHED VIA SEPARATE MESSAGE.

Timeline

NAVAREA XII messages in force 160800Z feb 2008cancelled by · 2008-02-16

Nearby now · within 120 nm

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Worldwide now

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Other

Everything the classifier did not place elsewhere. All current other warnings →

Not for navigation. This is a re-rendering of an official navigational warning for awareness; mariners must use official NAVAREA broadcasts and their national MSI service.