[Scan-DC] GPS navigational signal to be compromised during testing

[Alan Henney]

----- Original Message ----- 

Document Number: 899
        Fifth District
      U.S. Coast Guard

      Press Release Date: July 21, 2006
      Contact: U.S. Coast Guard
      757-398-6272

       INTERFERENCE TO THE GPS NAVIGATION SIGNAL

      PORTSMOUTH, Va. -  Interference to the GPS navigation signal in
the vicinity of the Patuxent River Naval Air Station is expected to
occur while testing is done on radio frequencies.

      The GPS navigation signal may be unreliable due to interference
testing on the frequencies of M1575 and M1227, which are used in
shipboard navigation and handheld systems.

      Systems that rely on GPS signals, such as E-911, AIS and DSC,
may be affected within a 25 nautical mile radius of positions
38-15.42N 076-26.02 W at sea level

      Interference testing is being conducted thru October 6 between
the hours of 8 a.m. and 4 p.m. Monday thru Friday only.

      More information is available at the Coast Guard Navigation
Center website at WWW.NAVCEN.USCG.GOV

      *GPS users are highly encouraged to report any GPS service
outages that may be experienced during this testing cycle by
contacting the Navigation Information Service (N.I.S.) at (703)
313-5900*

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