SUBJ: GPS STATUS 08 Oct 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, RB, 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) 1999162 241556Z SEP 1999 25 FCSTDV 273/1930-274/0730 1999163 271414Z SEP 1999 08 FCSTDV 274/1645-275/0445 1999164 010429Z OCT 1999 25 FCSTSUMM 273/2000-274/0418 1999165 020506Z OCT 1999 08 FCSTSUMM 274/1729-275/0502 B. ADVISORIES: NANU MSG DATE/TIME PRN TYPE SUMMARY (JDAY/ZULU TIME START - STOP) 1999158 081041Z SEP 1999 23 UNUSUFN 251/0627-/ 1999160 092217Z SEP 1999 23 UNUSABLE 251/0627-251/2344 1999161 221718Z SEP 1999 19 UNUSUFN 265/1715-/ 1999166 041733Z OCT 1999 19 UNUSABLE 265/1715-277/1727 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 MILITARY 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.