[IGSSTATION-5463] Re: HOB2 external frequency issue. [SEC=UNOFFICIAL]

Nicholas.Dando at ga.gov.au Nicholas.Dando at ga.gov.au
Thu Jul 4 21:56:14 PDT 2013

Author: Nick Dando

Geoscience Australia
Australian Regional GPS Network


Site ID : HOB2
DOMES No: 50116M004
Location: Hobart, Tasmania, Australia


Dear Colleagues,

Please be advised that the external reference frequency at HOB2 experienced problems between 2013-07-04T12:30Z and 2013-07-05T01:00Z. Preliminary inspection of HOB2 RINEX data has shown tracking was affected between 21:00 and 23:00 UTC for DOY 185, [hob21850.13d.Z]. The Maser is now believed to be stable.

We apologise for the inconvenience.

Nicholas Dando
National Geospatial Reference Systems
Minerals and Natural Hazards Division  |  GEOSCIENCE AUSTRALIA
Email:  Nicholas.Dando at ga.gov.au<mailto:Nicholas.Dando at ga.gov.au>    Web:  www.ga.gov.au<http://www.ga.gov.au/>
Cnr Jerrabomberra Avenue and Hindmarsh Drive Symonston ACT
GPO Box 378 Canberra ACT 2601 Australia
Applying geoscience to Australia's most important challenges

>>>There was a power outage at Mt Pleasant last night for 2 hours from

>>>10.35 PM local time or so. (Thurs 4th July 12:35 UTC)

>>>The generator ran during that time. Most things on a UPS coped during the switch over from Mains to generator and back.

>>>The circuit breaker powering the NASA maser tripped and the batteries exhausted some time before I arrived at work. So the maser lost >>>power completely.

>>>This would have affected the GA GPS observations.

>>>This morning's work was restoring the NASA maser to operation. It has been reasonably stable since 0100 UT on July 5th.

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