NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2010011 NANU TYPE: GENERAL *** GENERAL MESSAGE TO ALL GPS USERS *** On 11 January 2010, the GPS Master Control Station loaded new operational control system software to support future GPS modernization capabilities and signals. The software has been in operational soak and the GPS Master Control Station has received a few user concerns related to the software update. Military users can find additional information at the GPSOC SIPRNet website at http://gpsoc.afspc.af.smil.mil. The GPS Master Control Station is preparing to complete soak of the new software in preparation for final install. In support of the final install decision, the GPS Master Control Station requests that operational military and civil users provide any impacts encountered that are believed to be related to the new software or started after the 11 January 2010 install. Military or civil users please contact the GPSOC (military) or NAVCEN (civil) at the numbers listed below no later than 29 January 2010. Any user impacts will be presented at the decision brief for final install of the new GPS Master Control Station software. *** 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