SUBJ: GPS STATUS 11 JUL 96 1. SATELLITES, PLANES AND CLOCKS (CS=CESIUM RB=RUBIDIUM): A. BLOCK I : NONE B. BLOCK II: PRNS 1, 2, 3, 4, 5, 6, 7, 9, 14, 15, 16, 17, 18, 19, 20 PLANE : SLOT F1, B3, C2, D4, B4, C1, C4, A1, E1, D2, E3, D3, F3, A4, B2 CLOCK : RB, CS, CS, CS, CS, CS, CS, CS, CS, CS, CS, CS, CS, RB, CS BLOCK II: PRNS 21 22, 23, 24, 25, 26, 27, 28, 29, 31 PLANE : SLOT E2 B1, E4, D1, A2, F2, A3, C5, F4, C3 CLOCK : CS, CS, CS, RB, CS, CS, CS, CS, CS, RB CURRENT ADVISORIES (ADV) AND FORECASTS (FCST): INFORMATION IS REPEATED FOR SEVEN DAYS AFTER EVENT CONCLUDES. A. FORECASTS: NANU MSG DATE/TIME PRN TYPE SUMMARY 111-96190 241413Z JUN 96 PRN26 FCST MAINT 190/1950-UP TO 12 HRS 114-96198 031436Z JUL 96 PRN14 FCST MAINT 198/0300-UP TO 12 HRS 116-96191 090306Z JUL 96 PRN26 FCST SUMMARY 190/2059-191/0227 B. ADVISORIES NANU MSG DATE/TIME PRN TYPE SUMMARY 095-96142 212253Z MAY 96 PRN20 UNUSABLE 142/2242-UFN 115-96190 081843Z JUL 96 PRN01 UNUSABLE 190/1242-190/1255 C. GENERAL: NO IMPACT, INFORMATIONAL PURPOSES ONLY NUMBER MSG DATE/TIME PRN TYPE SUMMARY 3. REMARKS: A. SELECTIVE AVAILABILITY WAS REACTIVATED AT STANDARD POSITIONING SERVICE ACCURACY LEVELS ON DAY 182 (01 JUL 91) AT 0400 UTC. VARIATIONS MAY BE SEEN IN THE EFFECT OF SA DURING TESTING, BUT THE EFFECT SHOULD NOT EXCEED STANDARD POSITIONING SERVICE LEVELS. THE POINT OF CONTACT IS LCDR JACKSON (719)554-2634 OR DSN 692-2634. B. CIVILIAN: 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 OR FTP://FTP.NAVCEN.USCG.MIL C. MILITARY: 2SOPS/DOUAN NAVIGATION ANALYST AT (719)567-6378 OR DSN 560-6378