NOTICE ADVISORY TO NAVSTAR USERS (NANU) #086-92120
SUBJ: PRN6 (SVN3) PERFORMANCE WAS DEGRADED ON DAY 120 (29 APR
92) FROM 0500 UTC UNTIL DAY 120/1000 UTC. PRN6 SHOULD BE USED WITH
CAUTION DUE TO AN ON BOARD UNSTABLE FREQUENCY STANDARD.
2. 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.
3. POC: 1LT SKINNER AT COMMERCIAL (719) 550-6378 OR DSN 560-6378.