GPS OPERATIONAL ADVISORY 172 SUBJ: GPS STATUS 21 JUN 2010

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 B6, D1, C2, D4, E6, C6, A4, A3, A1, E3, D2, B4, F3, F1 CLOCK : RB, 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, 27, 28 PLANE : SLOT F2, B1, C4, E4, C3, E1, D3, E2, F4, D5, B2, F5, A6, B3 CLOCK : RB, RB, RB, RB, RB, RB, RB, RB, RB, CS, RB, RB, CS, RB BLOCK II: PRNS 29, 30, 31, 32 PLANE : SLOT C1, B9, A2, E5 CLOCK : RB, CS, 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)

B ADVISORIES: NANU MSG DATE/TIME PRN TYPE SUMMARY (JDAY/ZULU TIME START - STOP)

C GENERAL: NANU MSG DATE/TIME PRN TYPE SUMMARY (JDAY/ZULU TIME START - STOP)

2009025 061455Z APR 2009 GENERAL /-/
2010068 111551Z APR 2010 GENERAL /-/
3 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 (703)313-5900 24 HOURS DAILY AND INTERNET HTTP://WWW NAVCEN USCG GOV C MILITARY SUPPORT WEBPAGES CAN BE FOUND AT THE FOLLOWING HTTPS://GPS AFSPC AF MIL/GPS OR HTTP://GPS AFSPC AF MIL/GPSOC

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