071534Z JAN 2010
TERMINATION OF ALL U.S. LORAN-C SIGNALS
1. IN ACCORDANCE WITH THE 2010 DHS APPROPRIATIONS ACT, THE U.S. COAST GUARD WILL
TERMINATE THE TRANSMISSION OF ALL U.S. LORAN-C SIGNAL EFFECTIVE 2000Z 08 FEB 2010.
AT THAT TIME, THE U.S. LORAN-C SIGNAL WILL BE UNUSABLE AND PERMANTELY DISCONTINUED.
THIS TERMINATION DOESN 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.
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THE FOLLOWING IS AN EXCERPT FROM:
121934Z OCT 07
SUBJ: LORAN-C OPERATIONS, LORAN DATA CHANNEL (LDC) RESEARCH
1. LORAN STATIONS JUPITER, FL (7980-Y), LAS CRUCES, NM (9610-X),
AND MIDDLETOWN, CA, (9940-X) WILL BE ON AIR TESTING THE LORAN
DATA CHANNEL UNINTERRUPTED UNTIL FURTHER NOTICE.
2. TEST BROADCAST WILL USE PULSE POSITION MODULATION OF A
NINTH PULSE ADDED ONE THOUSAND MICROSECONDS AFTER THE STANDARD
PULSE GROUP. THE SIGNAL WILL MEET ALL SERVICE PERFORMANCE
PARAMETERS PUBLISHED IN THE 1994 SPECIFICATION OF THE LORAN-C
SIGNAL. USERS SHOULD NOT EXPERIENCE TRACKING ERRORS OR SERVICE
INTERFERENCE FROM THIS TEST BROADCAST. USERS WILL BE NOTIFIED OF
CHANGES TO THE TEST SCHEDULE AND WHEN TESTING IS COMPLETE.
3. LORAN USERS ARE ENCOURAGED TO REPORT ANY LORAN SERVICE
DEGRADATION OR OUTAGES THAT THEY MAY EXPERIENCE VIA THE
NAVIGATION INFORMATION SERVICE (NIS) BY CALLING (703)313-5900 OR
BY USING THE NAVCEN WEB SITES REPORT A LORAN PROBLEM WORKSHEET
AT WWW.NAVCEN.USCG.GOV. WIE UNTIL UFN. CREATED: 15 OCT 18:40 2007
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THE FOLLOWING IS AN EXCERPT FROM:
081220Z JAN 07
SUBJ: LORAN-C OPERATIONS, GREAT LAKES CHAIN (RATE 8970)
1. THE GREAT LAKES CHAIN (RATE 8970) WILL BE TESTING CHAIN
OPERATIONS AND STABILITY UNDER TIME OF TRANSMISSION (TOT)
CONTROL BEGINING AT 0300 GMT ON 17 JANUARY 2007. AS THIS 
TRANSITION TAKES PLACE, USERS MAY NOTICE A SHIFT IN THEIR 
MEASURED TIME DIFFERENCES OR REPORTED LAT/LONG AS THE STATIONS
TIMING VALUES ARE SET TO THEIR NOMINAL VALUES FOR THE DURATION
OF THE TEST. USERS SHOULD NOT EXPERIENCEANY TRACKING ERRORS
OR SERVICE INTERFERENCE DURRING THE TEST. USERS WILL BE NOTIFIED
OF ANY CHANGES TO THE TEST AND WHEN TESTING IS COMPLETED.
LORAN USERS ARE ENCOURAGED TO REPORT ANY LORAN SERVICE OUTAGES
THAT THEY MAY EXPERIENCE VIA THE NAVIGATION INFORMATION SERVICE
(NIS) BY CALLING (703) 313-5900 OR BY USING THE NAVCEN WEB SITE'S
REPORT A LORAN PROBLEM WORKSHEET AT WWW.NAVCEN.USCG.GOV
====================================================================
THE FOLLOWING IS AN EXCERPT FROM:
081222Z JAN 07
SUBJ: LORAN-C OPERATIONS, NORTH EAST US CHAIN (RATE 9960)
1. THE NORTH EAST CHAIN (RATE 9960) WILL BE TESTING CHAIN
OPERATIONS AND STABILITY UNDER TIME OF TRANSMISSION (TOT)
CONTROL BEGINING AT 0300 GMT ON 17 JANUARY 2007. AS THIS 
TRANSITION TAKES PLACE, USERS MAY NOTICE A SHIFT IN THEIR 
MEASURED TIME DIFFERENCES OR REPORTED LAT/LONG AS THE STATIONS
TIMING VALUES ARE SET TO THEIR NOMINAL VALUES FOR THE DURATION
OF THE TEST. USERS SHOULD NOT EXPERIENCEANY TRACKING ERRORS
OR SERVICE INTERFERENCE DURRING THE TEST. USERS WILL BE NOTIFIED
OF ANY CHANGES TO THE TEST AND WHEN TESTING IS COMPLETED.
LORAN USERS ARE ENCOURAGED TO REPORT ANY LORAN SERVICE OUTAGES
THAT THEY MAY EXPERIENCE VIA THE NAVIGATION INFORMATION SERVICE
(NIS) BY CALLING (703) 313-5900 OR BY USING THE NAVCEN WEB SITE'S
REPORT A LORAN PROBLEM WORKSHEET AT WWW.NAVCEN.USCG.GOV