GPS OPERATIONAL ADVISORY 263 SUBJ: GPS STATUS 19 SEP 2008 1. SATELLITES, PLANES, AND CLOCKS (CS=CESIUM RB=RUBIDIUM): A. BLOCK I : NONE B. BLOCK II: PRNS 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 PLANE : SLOT D1, C2, D4, B5, C5, A6, A3, A1, E3, D2, B4, F3, F1, F2 CLOCK : RB, CS, RB, RB, RB, RB, CS, CS, CS, RB, RB, RB, RB, RB BLOCK II: PRNS 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29 PLANE : SLOT B1, C4, E4, C3, E1, D3, E2, F4, D5, A5, F5, A4, B3, C1 CLOCK : RB, RB, ...Continue Reading

NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2008113 SUBJ: SVN55 (PRN15) FORECAST OUTAGE CANCELLED 1. NANU TYPE: FCSTCANC NANU NUMBER: 2008113 NANU DTG: 192008Z SEP 2008 REFERENCE NANU: 2008110 REF NANU DTG: 182026Z SEP 2008 SVN: 55 PRN: 15 START JDAY: 263 START TIME ZULU: 2009 START CALENDAR DATE: 19 SEP 2008 STOP JDAY: CANCELLED STOP TIME ZULU: N/A STOP CALENDAR DATE: N/A 2. CONDITION: THE FORECAST OUTAGE FOR GPS SATELLITE SVN55 (PRN15) SCHEDULED FOR JDAY 263 (19 SEP ...Continue Reading

GPS OPERATIONAL ADVISORY 263 SUBJ: GPS STATUS 19 SEP 2008 1. SATELLITES, PLANES, AND CLOCKS (CS=CESIUM RB=RUBIDIUM): A. BLOCK I : NONE B. BLOCK II: PRNS 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 PLANE : SLOT D1, C2, D4, B5, C5, A6, A3, A1, E3, D2, B4, F3, F1, F2 CLOCK : RB, CS, RB, RB, RB, RB, CS, CS, CS, RB, RB, RB, RB, RB BLOCK II: PRNS 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29 PLANE : SLOT B1, C4, E4, C3, E1, D3, E2, F4, D5, A5, F5, A4, B3, C1 CLOCK : RB, RB, ...Continue Reading

NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2008111 NANU TYPE: GENERAL *** GENERAL MESSAGE TO ALL GPS USERS *** ON APPROXIMATELY 24 SEP 2008, SVN32 WILL RESUME TRANSMITTING L-BAND UTILIZING PRN01. AT L-BAND ACTIVATION, SVN32/PRN01 WILL BE UNUSABLE UNTIL FURTHER NOTICE. ADDITIONALLY, NO BROADCAST ALMANACS WILL INCLUDE SVN32/PRN01. FUTURE NANUS WILL NOTIFY USERS OF ANY CHANGES TO THE ABOVE-STATED STATUS. *** GENERAL MESSAGE TO ALL GPS USERS *** POC: CIVILIAN - NAVCEN AT 703-313-5900, HTTP://WWW.NAVCEN.USCG.GOV MILITARY - ...Continue Reading

GPS OPERATIONAL ADVISORY 263 SUBJ: GPS STATUS 19 SEP 2008 1. SATELLITES, PLANES, AND CLOCKS (CS=CESIUM RB=RUBIDIUM): A. BLOCK I : NONE B. BLOCK II: PRNS 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 PLANE : SLOT D1, C2, D4, B5, C5, A6, A3, A1, E3, D2, B4, F3, F1, F2 CLOCK : RB, CS, RB, RB, RB, RB, CS, CS, CS, RB, RB, RB, RB, RB BLOCK II: PRNS 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29 PLANE : SLOT B1, C4, E4, C3, E1, D3, E2, F4, D5, A5, F5, A4, B3, C1 CLOCK : RB, RB, ...Continue Reading

NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2008109 SUBJ: SVN57 (PRN29) FORECAST OUTAGE JDAY 267/2030 - JDAY 268/0830 1. NANU TYPE: FCSTMX NANU NUMBER: 2008109 NANU DTG: 182023Z SEP 2008 REFERENCE NANU: N/A REF NANU DTG: N/A SVN: 57 PRN: 29 START JDAY: 267 START TIME ZULU: 2030 START CALENDAR DATE: 23 SEP 2008 STOP JDAY: 268 STOP TIME ZULU: 0830 STOP CALENDAR DATE: 24 SEP 2008 2. CONDITION: GPS SATELLITE SVN57 (PRN29) WILL BE UNUSABLE ON JDAY 267 (23 SEP 2008) BEGINNIN ...Continue Reading

-----Original Message----- From: gps@schriever.af.mil [mailto:gps@schriever.af.mil] Sent: Thursday, September 18, 2008 2:59 PM To: TIS-PF-NISWS Subject: New NANU 2008108 NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2008108 SUBJ: SVN44 (PRN28) FORECAST OUTAGE SUMMARY JDAY 262/1537 - JDAY 262/1855 1. NANU TYPE: FCSTSUMM NANU NUMBER: 2008108 NANU DTG: 181856Z SEP 2008 REFERENCE NANU: 2008102 REF NANU DTG: 111854Z SEP 2008 SVN: 44 PRN: 28 START JDAY: 262 START TIME ZULU: 1537 START CALE ...Continue Reading

GPS OPERATIONAL ADVISORY 262 SUBJ: GPS STATUS 18 SEP 2008 1. SATELLITES, PLANES, AND CLOCKS (CS=CESIUM RB=RUBIDIUM): A. BLOCK I : NONE B. BLOCK II: PRNS 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 PLANE : SLOT D1, C2, D4, B5, C5, A6, A3, A1, E3, D2, B4, F3, F1, F2 CLOCK : RB, CS, RB, RB, RB, RB, CS, CS, CS, RB, RB, RB, RB, RB BLOCK II: PRNS 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29 PLANE : SLOT B1, C4, E4, C3, E1, D3, E2, F4, D5, A5, F5, A4, B3, C1 CLOCK : RB, RB, ...Continue Reading

GPS OPERATIONAL ADVISORY 261 SUBJ: GPS STATUS 17 SEP 2008 1. SATELLITES, PLANES, AND CLOCKS (CS=CESIUM RB=RUBIDIUM): A. BLOCK I : NONE B. BLOCK II: PRNS 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 PLANE : SLOT D1, C2, D4, B5, C5, A6, A3, A1, E3, D2, B4, F3, F1, F2 CLOCK : RB, CS, RB, RB, RB, RB, CS, CS, CS, RB, RB, RB, RB, RB BLOCK II: PRNS 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29 PLANE : SLOT B1, C4, E4, C3, E1, D3, E2, F4, D5, A5, F5, A4, B3, C1 CLOCK : RB, RB, ...Continue Reading

NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2008107 SUBJ: SVN58 (PRN12) FORECAST OUTAGE SUMMARY JDAY 260/2346 - JDAY 261/0554 1. NANU TYPE: FCSTSUMM NANU NUMBER: 2008107 NANU DTG: 170556Z SEP 2008 REFERENCE NANU: 2008103 REF NANU DTG: 112004Z SEP 2008 SVN: 58 PRN: 12 START JDAY: 260 START TIME ZULU: 2346 START CALENDAR DATE: 16 SEP 2008 STOP JDAY: 261 STOP TIME ZULU: 0554 STOP CALENDAR DATE: 17 SEP 2008 2. CONDITION: GPS SATELLITE SVN58 (PRN12) WAS UNUSABLE ON JDAY 260 ...Continue Reading