SUBJ: GPS STATUS 26 Jan 1999
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, 13, 14, 15, 16,
   PLANE   : SLOT F1, B3, C2, D4, B4, C1, C4, A5, A1, E3, F5, E1, D2, E5,
   CLOCK   :      CS, CS, CS, RB, CS, CS, CS, RB, CS, CS, RB, CS, CS, CS,
   BLOCK II: PRNS 17, 18, 19, 21, 22, 23, 24, 25, 26, 27, 29, 30, 31
   PLANE   : SLOT D3, F3, A4, E2, B1, E4, D1, A2, F2, A3, F4, B2, C3
   CLOCK   :      CS, CS, RB, CS, RB, CS, RB, CS, RB, CS, 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)
1998186       282023Z DEC 1998      26   FCSTMX       011/2130-012/0930
1998187       282025Z DEC 1998      22   FCSTMX       012/1300-012/1700
1998189       301649Z DEC 1998      13   FCSTMX       009/1200-010/0430
1998192       301937Z DEC 1998      24   FCSTMX       013/1730-014/0530
1998193       301940Z DEC 1998      31   FCSTMX       014/0930-014/2130
1999001       091636Z JAN 1999      13   FCSTSUMM     009/1453-009/1635
1999004       112053Z JAN 1999      13   FCSTMX       016/1200-017/0400
1999005       120551Z JAN 1999      26   FCSTSUMM     011/2138-012/0552
1999006       121619Z JAN 1999      22   FCSTSUMM     012/1345-012/1542
1999007       132123Z JAN 1999      24   FCSTSUMM     013/1800-013/2114
1999008       141245Z JAN 1999      31   FCSTSUMM     014/0950-014/1243
1999009       152017Z JAN 1999      13   FCSTCANC     016/1200-/
B. ADVISORIES:
NANU          MSG DATE/TIME     PRN    TYPE         SUMMARY (JDAY/ZULU TIME START - STOP)
1999002         110118Z JAN 1999    31     UNUSUFN      011/0026-/
1999003         110128Z JAN 1999    31     UNUSABLE     011/0026-011/0026
1999010         201926Z JAN 1999    15     UNUNOREF     020/1900-020/1920
C. GENERAL:
NANU          MSG DATE/TIME     PRN    TYPE         SUMMARY (JDAY/ZULU TIME START - STOP)
3. REMARKS:
A. ANTI-SPOOF WAS DEACTIVATED ON JDAY 033 (02 FEB 97) AT OOOOZ.
ANTI-SPOOF WAS REACTIVATED ON JDAY 055 (24 FEB 97) AT 0000Z.
B. THE FREQUENCY STANDARD ON SVN22 WAS CHANGED TO A RB ON 7 OCT 98.
THE FREQUENCY STANDARD FOR SVN34 WAS CHANGED TO A RB ON 14 SEP 98.
C. THE POINT OF CONTACT FOR GPS OPERATIONAL SUPPORT IS CMDR BROOMFIELD
(719)554-5770 OR DSN 692-5770.
D. CIVILIAN:  FOR INFORMATION, CONTACT US COAST GUARD NAVCEN AT
COMMERCIAL (703)313-5900 24 HOURS DAILY, COMPUTER BBS (703)313-5910,
AND INTERNET HTTP://WWW.NAVCEN.USCG.MIL OR FTP://FTP.NAVCEN.USCG.MIL.
E. MILITARY: FOR INFORMATION, CONTACT CAPT TONY OCCHI, 2SOPS/DOAN
NAVIGATION ANALYST AT (719)567-6378, DSN 560-6378, OR INTERNET HTTP://WWW.SCHRIEVER.AF.MIL/GPS.