NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2009025 NANU TYPE: GENERAL * GENERAL MESSAGE TO ALL GPS USERS * On 10 April 09 no earlier than 1000z, SVN 49 (PRN 01) will begin transmitting data-less L5 The following conditions of use apply:

a The Air Force does not guarantee the availability or quality of L5 on SVN 49 (PRN 01)

b Users are cautioned that the new signal is under development and may be used for a variety of test applications for the time being As such, availability and quality of the L5 signal may be subject to change without prior notice Therefore, any use of the L5 signal on SVN 49 (PRN 01) is at the user's own risk

* GENERAL MESSAGE TO ALL GPS USERS *

POC: CIVILIAN - NAVCEN AT 703-313-5900, HTTPS://WWW NAVCEN USCG GOV MILITARY - GPS OPERATIONS CENTER at HTTP://GPS AFSPC AF MIL/GPSOC, DSN 560-2541, COMM 719-567-2541, gps_support@schriever af mil, HTTPS://gps afspc af mil MILITARY ALTERNATE - JOINT SPACE OPERATIONS CENTER, DSN 276-9994, COMM 805-606-9994, JSPOCCOMBATOPS@VANDENBERG AF MIL

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