SUBJ: GPS STATUS 01 FEB 93
1. SATELLITES, PLANES AND CLOCKS (CS=CESIUM RB=RUBIDIUM):
A. BLOCK I : PRNS  3, 11, 12, 13
   PLANE   : SLOT C4, C3, A1, C1
   CLOCK   :      RB, RB, RB, CS
B. BLOCK II: PRNS  2, 14, 15, 16, 17, 18, 19, 20, 21, 23, 24, 25, 26, 27, 28
   PLANE   : SLOT B3, E1, D2, E3, D3, F3, A4, B2, E2, E4, D1, A2, F2, A3, C2
   CLOCK   :      CS, CS, CS, CS, CS, CS, CS, CS, CS, CS, CS, RB, CS, CS, CS
   BLOCK II: PRNS  1, 29
   PLANE   : SLOT F1, F4
   CLOCK   :      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
016-93028 211530Z JAN 93  PRN32    FCST  MAINT        028/2000 UP TO 2 HRS
B. ADVISORIES:
NANU      MSG DATE/TIME   PRN      TYPE  SUMMARY
018-93025 251425Z JAN 93  PRN13    ADV   UNUSABLE     023/0656-023/0722
019-93026 261427Z JAN 93  PRN18    ADV   USABLE       025/2338
020-93028 281434Z JAN 93  PRN12    ADV   UNUSABLE     027/2300-027/2314
021-93028 281436Z JAN 93  PRN12    ADV   UNUSABLE     028/0547-028/0600
022-93028 281438Z JAN 93  PRN3     ADV   UNUSABLE     028/1009-028/1010
023-93029 290817Z JAN 93  PRN1     ADV   UNUSABLE     028/2053-028/2208
3. REMARKS:
A. USERS OF GPS ARE CAUTIONED THAT THE SYSTEM IS NOT YET FULLY
OPERATIONAL. SIGNAL AVAILABILITY AND ACCURACY ARE SUBJECT TO
CHANGE DUE TO AN INCOMPLETE CONSTELLATION AND OPERATIONAL TEST
ACTIVITIES.
B. 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 Col ROB WORLEY (719)554-2634 OR DSN
692-2634.
4. POINTS OF CONTACT:
A. CIVILIAN: US COAST GUARD AT COMMERCIAL (703)866-3806 VOICE OR
(703)866-3890 COMPUTER BBS.
B. MILITARY: 2SOPS/DOAI 1LT SKINNER AT (719)550-6378/80 OR DSN 560-
6378/80