NOTICE ADVISORY TO NAVSTAR USERS (NANU) #038-90052 SUBJ: L-BANDS ENABLED ON PRN8 FOR TESTING 51/1615 1. CONDITION: THE PRN8 L-BANDS (L1/L2) WERE ENABLED ON 20 FEB 90 (DAY 51) AT 1615UTC FOR TESTING. THE SATELLITE WILL REMAIN UNHEALTHY DURING THE TEST WHICH IS SCHEDULED TO CONTINUE FOR APPROXIMATELY ONE MONTH. ADDITIONAL INFORMATION WILL BE PROVIDED AS AVAILABLE. 2. RECOMMENDATION: AVOID USING DATA FROM PRN8. FREQUENCIES MAY NOT BE STABLE ENOUGH FOR USE IN SURVEY MODE. 3. POC: MAJOR FAUVER AT COMMERCIAL (719)550-6379 OR AV 560-6379.