[IGSMAIL-5928]: L5 signal transmissions to begin 10 April

[Jim.Ray]

******************************************************************************
IGS Electronic Mail      06 Apr 13:03:38 PDT 2009      Message Number 5928
******************************************************************************

Author: Jim Ray (forward of NANU)


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 at SCHRIEVER.AF.MIL, HTTPS://GPS.AFSPC.AF.MIL
    MILITARY ALTERNATE - JOINT SPACE OPERATIONS CENTER, DSN    276-9994,
      COMM 805-606-9994, JSPOCCOMBATOPS at VANDENBERG.AF.MIL