GPS OPERATIONAL ADVISORY        023.OA1
SUBJ: GPS STATUS 23 Jan 2001
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, 13, 14, 15
   PLANE   : SLOT F4, B3, C2, D4, B4, C1, C4, A3, A1, E3, D2, F3, F1, D5
   CLOCK   :      CS, CS, CS, RB, CS, CS, RB, RB, CS, CS, RB, RB, RB, CS
   BLOCK II: PRNS 17, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
   PLANE   : SLOT D3, A5, E1, E2, B1, E4, D1, A2, F2, A4, B5, F5, B2, C3
   CLOCK   :      CS, CS, RB, CS, RB, CS, RB, CS, RB, CS, RB, RB, CS, CS
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)
2000169       112150Z OCT 2000      28   FCSTMX       291/1200-292/0000
2000173       172158Z OCT 2000      28   FCSTEXTD     291/1200-/
2000210       211609Z DEC 2000      28   FCSTMX       003/1400-004/0200
2000211       211613Z DEC 2000      09   FCSTDV       005/1645-006/0445
2001001       032211Z JAN 2001      28   FCSTSUMM     003/1436-003/1933
2001002       040020Z JAN 2001      19   FCSTMX       008/1300-009/0100
2001003       051616Z JAN 2001      19   FCSTMX       016/1400-017/0200
2001004       051626Z JAN 2001      28   FCSTMX       018/1300-019/0100
2001005       060115Z JAN 2001      09   FCSTSUMM     005/1723-006/0047
2001006       060612Z JAN 2001      19   FCSTCANC     016/1400-/
2001007       060615Z JAN 2001      28   FCSTCANC     018/1300-/
2001008       090119Z JAN 2001      19   FCSTSUMM     008/1327-008/1856
2001009       090122Z JAN 2001      19   FCSTSUMM     008/1327-008/1856
2001011       122007Z JAN 2001      21   FCSTMX       019/1400-020/0200
2001012       162026Z JAN 2001      28   FCSTMX       023/1200-024/0000
2001013       191815Z JAN 2001      21   FCSTSUMM     019/1422-019/1821
2001014       231710Z JAN 2001      28   FCSTSUMM     023/1229-023/1656
B. ADVISORIES:
NANU          MSG DATE/TIME     PRN    TYPE         SUMMARY (JDAY/ZULU TIME START - STOP)
2000179         270102Z OCT 2000    24     UNUSUFN      300/2320-/
2000180         270940Z OCT 2000    24     UNUSABLE     300/2320-301/0919
2000185         100407Z NOV 2000    20     UNUSUFN      315/0236-/
2000186         101643Z NOV 2000    20     UNUSABLE     315/0236-315/0736
2000196         020651Z DEC 2000    22     UNUSUFN      337/0633-/
2000197         042207Z DEC 2000    22     UNUSABLE     337/0633-339/2023
2000202         102144Z DEC 2000    14     USABINIT     345/2112-/
C. GENERAL:
NANU          MSG DATE/TIME     PRN    TYPE         SUMMARY (JDAY/ZULU TIME START - STOP)
3. REMARKS:
A. SELECTIVE AVAILABILITY WAS TURNED OFF ON JDAY 123 (02 MAY 00) AT 0407Z
B. THE POINT OF CONTACT FOR GPS MILITARY OPERATIONAL SUPPORT IS THE GPS
   SUPPORT CENTER AT (719)567-2541 OR DSN 560-2541.
C. CIVILIAN:  FOR INFORMATION, CONTACT US COAST GUARD NAVCEN AT
   COMMERCIAL (703)313-5900 24 HOURS DAILY AND INTERNET HTTP://WWW.NAVCEN.USCG.MIL OR FTP://FTP.NAVCEN.USCG.MIL.
D. MILITARY: FOR INFORMATION, CONTACT 1LT HERB KNIERIM, 2SOPS/DOAN
   NAVIGATION ANALYST AT (719)567-6614, DSN 560-6614, OR INTERNET                       HTTP://WWW.SCHRIEVER.AF.MIL/GPS.