January 28th 2016 PST
Air Force Official Press Release - GPS Ground System Anomaly On 26 January at 12:49 a.m. MST, the 2nd Space Operations Squadron at the 50th Space Wing, Schriever Air Force Base, Colo., verified users were experiencing GPS timing issues. Further investigation revealed an issue in the Global Positioning System ground software which only affected the time on legacy L-band signals. This change occurred when the oldest vehicle, SVN 23, was removed from the constellation. While the core navigation systems were working norma ...Continue Reading
January 28th 2016 PST
Air Force Official Press Release - GPS Ground System Anomaly On 26 January at 12:49 a.m. MST, the 2nd Space Operations Squadron at the 50th Space Wing, Schriever Air Force Base, Colo., verified users were experiencing GPS timing issues. Further investigation revealed an issue in the Global Positioning System ground software which only affected the time on legacy L-band signals. This change occurred when the oldest vehicle, SVN 23, was removed from the constellation. While the core navigation systems were working norma ...Continue Reading
January 28th 2016 PST
GPS OPERATIONAL ADVISORY 028 SUBJ: GPS STATUS 28 JAN 2016 1. SATELLITES, PLANES, AND CLOCKS (CS=CESIUM RB=RUBIDIUM): A. BLOCK I : NONE B. BLOCK II: PRNS 1, 2, 3, 5, 6, 7, 8, 8, 9, 10, 11, 12, 13, 14 PLANE : SLOT D2, D1, E1, E3, D4, A4, E5, C5, F3, E6, D5, B4, F6, F1 CLOCK : RB, RB, RB, RB, RB, RB, RB, CS, RB, RB, 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, B6, D3, E2, F4, A1, B2, B5, C2, B3 CLOCK : RB, RB, ...Continue Reading
January 27th 2016 PST
NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2016009 NANU TYPE: GENERAL *** GENERAL MESSAGE TO ALL GPS USERS *** On approximately 02 Feb 2016, SVN49 will resume transmitting L-band utilizing PRN04. At L-band activation, SVN49/PRN04 will be unusable until further notice. Additionally, no broadcast almanacs will include SVN49/PRN04 until further notice. *** GENERAL MESSAGE TO ALL GPS USERS *** POC: CIVILIAN - NAVCEN AT 703-313-5900, HTTP://WWW.NAVCEN.USCG.GOV MILITARY - GPS OPERATIONS CENTER at HTTPS://GPS.AFSPC.AF.MIL/GPSOC ...Continue Reading
January 27th 2016 PST
GPS OPERATIONAL ADVISORY 027 SUBJ: GPS STATUS 27 JAN 2016 1. SATELLITES, PLANES, AND CLOCKS (CS=CESIUM RB=RUBIDIUM): A. BLOCK I : NONE B. BLOCK II: PRNS 1, 2, 3, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 PLANE : SLOT D2, D1, E1, E3, D4, A4, C5, F3, E6, D5, B4, F6, F1, F2 CLOCK : RB, RB, RB, RB, RB, RB, CS, RB, RB, 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, B6, D3, E2, F4, A1, B2, B5, C2, B3, C1 CLOCK : RB, RB, ...Continue Reading
January 26th 2016 PST
GPS OPERATIONAL ADVISORY SUBJ: GPS STATUS 26 JAN 2016 1. SATELLITES, PLANES, AND CLOCKS (CS=CESIUM RB=RUBIDIUM): A. BLOCK I : NONE B. BLOCK II: PRNS 1, 2, 3, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 PLANE : SLOT D2, D1, E1, E3, D4, A4, C5, F3, E6, D5, B4, F6, F1, F2 CLOCK : RB, RB, RB, RB, RB, RB, CS, RB, RB, 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, B6, D3, E2, F4, A1, B2, B5, C2, B3, C1 CLOCK : RB, RB, RB, ...Continue Reading
January 25th 2016 PST
NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2016008 SUBJ: SVN23 (PRN32) DECOMMISSIONING JDAY 025/2200 1. NANU TYPE: DECOM NANU NUMBER: 2016008 NANU DTG: 252232Z JAN 2016 REFERENCE NANU: 2016006 REF NANU DTG: 201928Z JAN 2016 SVN: 23 PRN: 32 UNUSABLE START JDAY: 025 UNUSABLE START TIME ZULU: 1536 UNUSABLE START CALENDAR DATE: 25 JAN 2016 DECOMMISSIONING JDAY: 025 DECOMMISSIONING TIME ZULU: 2200 DECOMMISSIONING CALENDAR DATE: 25 JAN 2016 2. CONDITION: GPS SATELLITE SVN23 ...Continue Reading
January 25th 2016 PST
GPS OPERATIONAL ADVISORY 025 SUBJ: GPS STATUS 25 JAN 2016 1. SATELLITES, PLANES, AND CLOCKS (CS=CESIUM RB=RUBIDIUM): A. BLOCK I : NONE B. BLOCK II: PRNS 1, 2, 3, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 PLANE : SLOT D2, D1, E1, E3, D4, A4, C5, F3, E6, D5, B4, F6, F1, F2 CLOCK : RB, RB, RB, RB, RB, RB, CS, RB, RB, 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, B6, D3, E2, F4, A1, B2, B5, C2, B3, C1 CLOCK : RB, RB, ...Continue Reading
January 24th 2016 PST
GPS OPERATIONAL ADVISORY 024 SUBJ: GPS STATUS 24 JAN 2016 1. SATELLITES, PLANES, AND CLOCKS (CS=CESIUM RB=RUBIDIUM): A. BLOCK I : NONE B. BLOCK II: PRNS 1, 2, 3, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 PLANE : SLOT D2, D1, E1, E3, D4, A4, C5, F3, E6, D5, B4, F6, F1, F2 CLOCK : RB, RB, RB, RB, RB, RB, CS, RB, RB, 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, B6, D3, E2, F4, A1, B2, B5, C2, B3, C1 CLOCK : RB, RB, ...Continue Reading
January 23rd 2016 PST
GPS OPERATIONAL ADVISORY 023 SUBJ: GPS STATUS 23 JAN 2016 1. SATELLITES, PLANES, AND CLOCKS (CS=CESIUM RB=RUBIDIUM): A. BLOCK I : NONE B. BLOCK II: PRNS 1, 2, 3, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 PLANE : SLOT D2, D1, E1, E3, D4, A4, C5, F3, E6, D5, B4, F6, F1, F2 CLOCK : RB, RB, RB, RB, RB, RB, CS, RB, RB, 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, B6, D3, E2, F4, A1, B2, B5, C2, B3, C1 CLOCK : RB, RB, ...Continue Reading
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