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Coast guard camslant chesapeake conducting hf transmitter matrix maintenance 061200Z to 061600Z sep

U.S · NAVAREA IV 330/08

issued: 2008-08-25 23:18Z
status: cancelled 2008-09-04 09:22Z (archive)
self-cancels: 2008-09-06 17:00Z
authority: COGARD CAMSLANT CHESAPEAKE 252218Z AUG 08.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. U.S. COAST GUARD CAMSLANT CHESAPEAKE CONDUCTING HF
   TRANSMITTER MATRIX MAINTENANCE 061200Z TO 061600Z SEP.
   THE FOLLOWING DSC FREQUENCIES FROM CAMSLANT/NMN DSC
   SITE WILL BE OFFLINE: 2185.8KHZ, 4205.8KHZ, 6310.3KHZ,
   8412.8KHZ, 12575.3KHZ, AND 16802.8KHZ.
2. CANCEL THIS MSG 061700Z SEP.

Activity windows · 1 in this warning

opens (UTC)	closes (UTC)	local	length
2008-09-06 12:00Z	2008-09-06 16:00Z	—	4 h

Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.

Timeline

Cancel NAVAREA IV 330/08 and this msg, maintenance delayedcancelled by · 2008-09-04

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

34 other warnings in force · see all

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.