NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2010068 NANU TYPE: GENERAL 
*** GENERAL MESSAGE TO ALL GPS USERS ***
The 50th Space Wing in cooperation with the Global Positioning Systems Wing, will be testing SVN49 (PRN01) signal characterization over the next 6 months.  SVN49 (PRN01) will remain unhealthy until further notice, and the broadcast navigation message will remain IS-GPS-200 compliant.  Users choosing to track an unhealthy SVN49 (PRN01) should contact GPSOC (military) or NAVCEN (civil) immediately for any issues that may be attributed to these activities.
*** GENERAL MESSAGE TO ALL GPS USERS ***

   POC: 
   CIVILIAN - NAVCEN AT 703-313-5900, HTTPS://WWW.NAVCEN.USCG.GOV
   MILITARY - GPS OPERATIONS CENTER at HTTP://GPS.AFSPC.AF.MIL/GPSOC, DSN 560-2541,
     COMM 719-567-2541, gps_support@schriever.af.mil, HTTPS://gps.afspc.af.mil 
   MILITARY ALTERNATE - JOINT SPACE OPERATIONS CENTER, DSN    276-3514, 
     COMM 805-606-3514, JSPOCCOMBATOPS@VANDENBERG.AF.MIL