Message-ID: <49CD35BC.7020303@unavco.org> Date: Fri, 27 Mar 2009 14:23:24 -0600 From: David Maggert User-Agent: Thunderbird 2.0.0.19 (Windows/20081209) To: igsstation@igscb.jpl.nasa.gov Subject: [IGSSTATION-2959]: SHAO: external reference clock interruption Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-igsstation Precedence: bulk ****************************************************************************** IGS Station Mail 27 Mar 13:23:47 PDT 2009 Message Number 2959 ****************************************************************************** Author: David Maggert, UNAVCO Dear Colleagues, The ASHTECH UZ-12 receiver at the Shanghai Astronomical Observatory, PRC (SHAO) station reverted to its internal clock between 2008-09-18 and 2009-03-19. The external 5 MHz H-Maser reference has been locked back on again. An updated site log has been submitted to the IGSCB. http://igscb.jpl.nasa.gov/igscb/station/log/shao_20090324.log Modified/Added Sections : 6.4, 6.5, 6.6 6.4 Standard Type : EXTERNAL H-MASER Input Frequency : 5 MHz Effective Dates : 2008-06-04/2008-09-18 Notes : Actual start time 2008-06-04T20:31Z : Actual end time 2008-09-18T14:15Z 6.5 Standard Type : INTERNAL Input Frequency : (if external) Effective Dates : 2008-09-18/2009-03-19 Notes : Actual start time 2008-09-18T14:15Z : Actual end time 2009-03-19T20:35Z 6.6 Standard Type : EXTERNAL H-MASER Input Frequency : 5 MHz Effective Dates : 2009-03-19/CCYY-MM-DD Notes : Actual start time 2009-03-19T20:35Z We apologize for the inconvenience this interruption may have caused. Maintenance and operations of the SHAO station is a collaborative effort supported by JPL, UNAVCO, and the Shanghai Astronomical Observatory with funding provided by NASA's Earth Surface and Interior Focus Area - Science Mission Directorate. Best Regards, David Maggert