[IGSSTATION-4755] MCM4: data collection resuming

[David Maggert]

Author: David Maggert, UNAVCO

Dear Colleagues,

The McMurdo, Ross Island (MCM4) station had a computer UPS failure.  As 
a result no data was collected from November 26, 2011 until January 
24th, 2102.  The old unpowered 4x1 antenna splitter was removed and a 
new powered 4x1 has been installed.  This change has been documented in 
the site log.


> 4.2  Antenna Type             : AOAD/M_T        JPLA
>      Serial Number            : 363
>      Antenna Reference Point  : BPA
>      Marker->ARP Up Ecc. (m)  : 0.0814
>      Marker->ARP North Ecc(m) : 0.0000
>      Marker->ARP East Ecc(m)  : 0.0000
>      Alignment from True N    :
>      Antenna Radome Type      : JPLA
>      Radome Serial Number     :
>      Antenna Cable Type       : Heliax and LMR400 sections
>      Antenna Cable Length     : 97.5
>      Date Installed           : 2012-01-24T22:45Z
>      Date Removed             : (CCYY-MM-DDThh:mmZ)
>      Additional Information   : New 4x1 powered antenna splitter installed and
>                               : replaces old 4x1 un-powered splitter.  New
>                               : antenna splitter is manufactured by GPS Source
>                               : and the part is S14-PDC/V.


The GPS antenna and receiver remain the same as before.  We apologize 
for the inconvenience of this outage.

Maintenance and operations of the MCM4 station is a collaborative effort 
supported by JPL and UNAVCO with funding provided by NASA's Earth 
Surface and Interior Focus Area - Science Mission Directorate.

Best Regards,
David Maggert