SUBJ: GPS STATUS 10 FEB 94 1. SATELLITES, PLANES AND CLOCKS (CS=CESIUM RB=RUBIDIUM): A. BLOCK I : PRNS 3, 12, 13 PLANE : SLOT C4, A1, C1 CLOCK : RB, RB, RB B. BLOCK II: PRNS 1, 2, 4, 5, 7, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22 PLANE : SLOT F1, B3, D4, B4, C4, A1, E1, D2, E3, D3, F3, A4, B2, E2, B1 CLOCK : CS, CS, CS, CS, CS, CS, CS, CS, CS, CS, CS, CS, CS, CS, CS BLOCK II: PRNS 23, 24, 25, 26, 27, 28, 29, 31 PLANE : SLOT E4, D1, A2, F2, A3, C2, F4, C3 CLOCK : CS, RB, CS, CS, CS, CS, CS, CS 2. CURRENT ADVISORIES (ADV) AND FORECASTS (FCST): INFORMATION IS REPEATED FOR SEVEN DAYS AFTER EVENT CONCLUDES. A. FORECASTS: NANU MSG DATE/TIME PRN TYPE SUMMARY 018-94034 191403Z JAN 94 PRN22 FCST MAINT 034/1900-UP TO 17 HOURS 035-94049 012016Z FEB 94 PRN12 FCST MAINT 049/1500-UP TO 96 HOURS 041-94038 071633Z FEB 94 PRN22 FCST MAINT 040/1835-UP TO 17 HOURS B. ADVISORIES NANU MSG DATE/TIME PRN TYPE SUMMARY 037-94035 042038Z FEB 94 PRN13 ADV UNUSABLE 035/2038-035/2057 038-94038 071349Z FEB 94 PRN12 ADV UNUSABLE 035/1100-035/1108 039-94038 071352Z FEB 94 PRN3 ADV UNUSABLE 036/1908-036/1920 040-94038 071353Z FEB 94 PRN13 ADV UNUSABLE 036/2151-036/2203 042-94039 081455Z FEB 94 PRN13 ADV UNUSABLE 039/1250-039/1255 043-94039 081508Z FEB 94 PRN13 ADV UNUSABLE 036/2151-036/2204 044-94040 090257Z FEB 94 PRN03 ADV UNUSABLE 040/0200-040/0250 045-94040 091528Z FEB 94 PRN13 ADV UNUSABLE 040/1132-040/1136 046-93040 091900Z FEB 94 PRN3 ADV UNUSABLE 040/1308-040/1855 047-94041 101446Z FEB 94 PRN12 ADV UNUSABLE 041/0148-041/0213 3. REMARKS: 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 LT CMDR TRICE (719)554-2634 OR DSN 692-2634. 4. POINTS OF CONTACT: A. CIVILIAN: US COAST GUARD AT COMMERCIAL (703)313-5900 VOICE OR (703)313-5910 COMPUTER BBS. B. MILITARY: 2SOPS/DOAI CAPTAIN THOMPSON AT (719)550-6378 OR DSN 560- 6378