Recent Modernization Efforts

The LORAN Recapitalization Project (LRP) is an on-going effort to modernize the LORAN-C radio-navigation infrastructure in order to preserve operations well into the future. The LRP initiative will improve/update the system’s infrastructure allowing the U.S. LORAN System to meet present and future radio-navigation requirements. 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.

There are on-going modernization efforts to:

• Replace 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

  
  
  
• Replace the time and frequency equipment at the transmitting stations. This work has already been accomplished at:
  
• LORAN Station George, WA
• LORAN Station Dana, IN
• LORAN Station Fallon, NV
• LORAN Station Baudette, MN
• LORAN Station Seneca, NY
• LORAN Station Boise City, OK
• LORAN Station Malone, FL
• LORAN Station Havre, MT
• LORAN Station Searchlight, NV
• LORAN Station Middletown, CA
• LORAN Station Jupiter, FL
• LORAN Station Carolina Beach, NC
• LORAN Station Grangeville, LA
• LORAN Station Raymondville, TX
• LORAN Station Gillette, WY
• LORAN Station Las Cruces, NM
• LORAN Station Nantucket, MA
• LORAN Station Caribou, ME
• LORAN Station Kodiak, AK
• LORAN Station St. Paul, AK