GPS OPERATIONAL ADVISORY 261 SUBJ: GPS STATUS 18 SEP 2011

1. SATELLITES, PLANES, AND CLOCKS (CS=CESIUM RB=RUBIDIUM): A BLOCK I : NONE B BLOCK II: PRNS 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 PLANE : SLOT D6, D1, C2, D4, E3, C6, A4, A3, A1, E6, D2, B4, F3, F1 CLOCK : CS, RB, CS, RB, RB, RB, RB, CS, CS, CS, RB, RB, RB, RB BLOCK II: PRNS 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 28, 29 PLANE : SLOT F2, B1, C4, E4, C3, E1, D3, E2, F4, D5, B2, F5, B3, C1 CLOCK : RB, RB, RB, RB, RB, RB, RB, RB, RB, CS, RB, RB, RB, RB BLOCK II: PRNS 30, 31, 32 PLANE : SLOT B5, A2, E5 CLOCK : RB, RB, RB

2. CURRENT ADVISORIES AND FORECASTS : A FORECASTS: FOR SEVEN DAYS AFTER EVENT CONCLUDES NANU MSG DATE/TIME PRN TYPE SUMMARY (JDAY/ZULU TIME START - STOP)

2011075 042339Z Sep 2011 30 FCSTMX 250/2000-252/2000 2011076 081935Z Sep 2011 16 FCSTDV 259/1225-260/0025 2011077 091901Z Sep 2011 30 FCSTEXTD 250/2000-/ 2011078 140024Z Sep 2011 30 FCSTSUMM 250/2037-257/0013 2011079 161329Z Sep 2011 16 FCSTCANC 259/1225-/ 2011080 180103Z Sep 2011 16 FCSTDV 263/0915-263/2115 B ADVISORIES:
NANU MSG DATE/TIME PRN TYPE SUMMARY (JDAY/ZULU TIME START - STOP)

2011070 261817Z Aug 2011 30 UNUSUFN 238/1816-/ 2011071 302241Z Aug 2011 30 UNUSABLE 238/1816-242/2233 C GENERAL:
NANU MSG DATE/TIME PRN TYPE SUMMARY (JDAY/ZULU TIME START - STOP)

2011047 160718Z Jul 2011 01 LAUNCH /-/ 2011055 031855Z Aug 2011 GENERAL /-/ 2011061 151959Z Aug 2011 GENERAL /-/ 2011062 162109Z Aug 2011 GENERAL /-/ 2011074 042312Z Sep 2011 GENERAL /-/

1. REMARKS: A THE POINT OF CONTACT FOR GPS MILITARY OPERATIONAL SUPPORT IS THE GPS OPERATIONS CENTER AT 719-567-2541 OR DSN 560-2541 B CIVILIAN: FOR INFORMATION, CONTACT US COAST GUARD NAVCEN AT COMMERCIAL 719-567-2541 24 HOURS DAILY AND INTERNET HTTPS://WWW NAVCEN USCG GOV C MILITARY SUPPORT WEBPAGES CAN BE FOUND AT THE FOLLOWING HTTPS://gps afspc af mil/GPS OR HTTPS://gps afspc af mil/GPSOC

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