***
Special Notice Regarding LORAN Closure: *** In accordance
with the DHS Appropriations Act, the U.S. Coast Guard will terminate
the transmission of all U.S. LORAN-C signals effective 2000Z 08 Feb
2010. At that time, the U.S. LORAN-C signal will be unusable and permanently
discontinued. This termination does not affect U.S. participation
in the Russian American or Canadian LORAN-C chains. U.S. participation
in these chains will continue temporarily in accordance with international
agreements. You may read more and download pertinent documents via
our LORAN-C page.
The LORAN Recapitalization Project (LRP) modernized the LORAN-C
radio-navigation infrastructure in order to preserve operations.
Advances in technology has allowed the Coast Guard to make significant
improvements in the LORAN-C System such as:
Synchronization of all Master Transmitting Stations to Universal
Time Coordinated (UTC)
Improved timing stability with the installation of new Primary
Frequency Standards at all of the Transmitting Stations.
Uninterruptible Power Supplies (UPS) have been installed at
the transmitting stations to reduce the number of service interruptions
caused by power anomalies.
The Transmitters have been upgraded with a new switching mechanism
that reduces the time the station is off air for equipment switches
down to 3 seconds.
Other modernization efforts:
Replaced the aging vacuum tube transmitters with a solid-state
version. This work has already been accomplished at:
LORAN Station
George, WA
LORAN Station
Dana, IN
LORAN Station
Fallon, NV
LORAN Station
Searchlight, NV
LORAN Station
Middletown, CA
LORAN Station
Kodiak, AK
LORAN Station
St. Paul, AK
Replaced the time and frequency equipment at the transmitting
stations. This work has already been accomplished at:
