DSRC Site Information Form
     NOAA Continuously Operating Reference Station
     See Instructions at:
       https://files.igs.org/pub/station/general/sitelog_instr.txt

0.   Form

     Prepared by (full name)  : Francine Coloma
     Date Prepared            : 2022-02-08
     Report Type              : UPDATE
     If Update:
      Previous Site Log       : dsrc_20211025.log 
      Modified/Added Sections : 1, 3.10, 4.3


1.   Site Identification of the GNSS Monument

     Site Name                : Boulder
     Four Character ID        : DSRC
     Monument Inscription     :
     IERS DOMES Number        : (A9)
     CDP Number               : (A4)
     Monument Description     : STEEL MAST
       Height of the Monument : 1.816 m
       Monument Foundation    : ROOF
       Foundation Depth       : (m)
     Marker Description       : (CHISELLED CROSS/DIVOT/BRASS NAIL/etc)
     Date Installed           : 1999-05-28T00:00Z
     Geologic Characteristic  : SOIL
       Bedrock Type           : (IGNEOUS/METAMORPHIC/SEDIMENTARY)
       Bedrock Condition      : (FRESH/JOINTED/WEATHERED)
       Fracture Spacing       : (1-10 cm/11-50 cm/51-200 cm/over 200 cm)
       Fault zones nearby     : (YES/NO/Name of the zone)
         Distance/activity    : (multiple lines)
     Additional Information   : Site decommissioned 2022-FEB-08 


2.   Site Location Information

     City or Town             : Boulder
     State or Province        : Colorado
     Country                  : United States
     Tectonic Plate           : North American
     Approximate Position (ITRF)
       X coordinate (m)       : -1288338.722
       Y coordinate (m)       : -4721988.556
       Z coordinate (m)       : 4078321.136
       Latitude (N is +)      : +395929.15
       Longitude (E is +)     : -1051539.72
       Elevation (m,ellips.)  : 1656.3
     Additional Information   : ARP IGS08 POSITION (EPOCH 2005.00)
                              : Computed in Aug 2011 using data through gpswk
                              :  1631.


3.   GNSS Receiver Information

3.1  Receiver Type            : TRIMBLE 4000SSI
     Satellite System         : GPS
     Serial Number            : 3327A03457
     Firmware Version         : 7.29
     Elevation Cutoff Setting : (deg)
     Date Installed           : 1999-05-27T23:00Z
     Date Removed             : 2012-10-11T22:00Z
     Temperature Stabiliz.    : (none or tolerance in degrees C)
     Additional Information   : Receiver change

3.2  Receiver Type            : TRIMBLE NETR9
     Satellite System         : GPS
     Serial Number            : 5051K72749
     Firmware Version         : 4.60
     Elevation Cutoff Setting : 7 deg
     Date Installed           : 2012-10-11T22:30Z
     Date Removed             : 2017-05-09T17:00Z 
     Temperature Stabiliz.    : (none or tolerance in degrees C)
     Additional Information   : Receiver re-configuration to hourly files,
                              : cutoff angle to 0-deg, turned off Everest
                              : multipath. Note that this is GPS-only

3.3  Receiver Type            : TRIMBLE NETR9
     Satellite System         : GPS
     Serial Number            : 5051K72749
     Firmware Version         : 4.60
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2017-05-09T17:05Z
     Date Removed             : 2017-05-17T16:40Z   
     Temperature Stabiliz.    : (none or tolerance in degrees C)
     Additional Information   : Receiver replaced.  Elevation mask to -5 deg

3.4  Receiver Type            : TRIMBLE NETR9
     Satellite System         : GPS
     Serial Number            : 5101K72953 
     Firmware Version         : 5.22
     Elevation Cutoff Setting : -5 deg
     Date Installed           : 2017-05-17T16:45Z
     Date Removed             : 2018-01-29T20:53Z 
     Temperature Stabiliz.    : (none or tolerance in degrees C)
     Additional Information   : Firmware update 

3.5  Receiver Type            : TRIMBLE NETR9
     Satellite System         : GPS
     Serial Number            : 5101K72953 
     Firmware Version         : 5.30
     Elevation Cutoff Setting : -5 deg
     Date Installed           : 2018-01-29T21:02Z
     Date Removed             : 2018-12-17T18:08Z
     Temperature Stabiliz.    : (none or tolerance in degrees C)
     Additional Information   : Firmware update 

3.6  Receiver Type            : TRIMBLE NETR9
     Satellite System         : GPS
     Serial Number            : 5101K72953 
     Firmware Version         : 5.37
     Elevation Cutoff Setting : -5 deg
     Date Installed           : 2018-12-17T18:10Z
     Date Removed             : 2019-09-26T19:40Z
     Temperature Stabiliz.    : (none or tolerance in degrees C)
     Additional Information   : (multiple lines)

3.7  Receiver Type            : TRIMBLE NETR9
     Satellite System         : GPS+GLO+GAL+BDS+QZSS
     Serial Number            : 5101K72953 
     Firmware Version         : 5.42
     Elevation Cutoff Setting : -5 deg
     Date Installed           : 2019-09-26T19:40Z
     Date Removed             : 2020-02-20T23:17Z 
     Temperature Stabiliz.    : (none or tolerance in degrees C)
     Additional Information   : upgraded GPS to GNSS
                              : Firmware update

3.8  Receiver Type            : TRIMBLE NETR9
     Satellite System         : GPS+GLO+GAL+BDS+QZSS
     Serial Number            : 5101K72953 
     Firmware Version         : 5.43
     Elevation Cutoff Setting : -5 deg
     Date Installed           : 2020-02-20T23:23Z 
     Date Removed             : 2020-05-07T20:36Z
     Temperature Stabiliz.    : (none or tolerance in degrees C)
     Additional Information   : Firmware update 

3.9  Receiver Type            : TRIMBLE NETR9
     Satellite System         : GPS+GLO+GAL+BDS+QZSS
     Serial Number            : 5101K72953 
     Firmware Version         : 5.45
     Elevation Cutoff Setting : -5 deg
     Date Installed           : 2020-05-07T20:47Z 
     Date Removed             : 2021-05-21T20:56Z
     Temperature Stabiliz.    : (none or tolerance in degrees C)
     Additional Information   : Firmware update 

3.10 Receiver Type            : TRIMBLE NETR9
     Satellite System         : GPS+GLO+GAL+BDS+QZSS
     Serial Number            : 5101K72953 
     Firmware Version         : 5.48
     Elevation Cutoff Setting : -5 deg
     Date Installed           : 2021-05-21T20:59Z 
     Date Removed             : 2022-02-08T18:36Z 
     Temperature Stabiliz.    : (none or tolerance in degrees C)
     Additional Information   : Site decommissioned 2022-FEB-08 

3.x  Receiver Type            : (A20, from rcvr_ant.tab; see instructions)
     Satellite System         : (GPS+GLO+GAL+BDS+QZSS+SBAS)
     Serial Number            : (A20, but note the first A5 is used in SINEX)
     Firmware Version         : (A11)
     Elevation Cutoff Setting : (deg)
     Date Installed           : (CCYY-MM-DDThh:mmZ)
     Date Removed             : (CCYY-MM-DDThh:mmZ)
     Temperature Stabiliz.    : (none or tolerance in degrees C)
     Additional Information   : (multiple lines)


4.   GNSS Antenna Information

4.1  Antenna Type             : TRM33429.00+GP  NONE
     Serial Number            : 0220132576
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  : 0.0000
     Marker->ARP North Ecc(m) : 0.0000
     Marker->ARP East Ecc(m)  : 0.0000
     Alignment from True N    : 0 deg
     Antenna Radome Type      : NONE
     Radome Serial Number     : (A4 from rcvr_ant.tab; see instructions)
     Antenna Cable Type       : (vendor & type number)
     Antenna Cable Length     : (m)
     Date Installed           : 1999-03-17T22:00Z
     Date Removed             : 2012-10-10T22:00Z
     Additional Information   : Converted ARP N & E from F8.4 to 0.0000

4.2  Antenna Type             : TRM41249.00     NONE
     Serial Number            : 60270237
     Antenna Reference Point  : BAM
     Marker->ARP Up Ecc. (m)  : 0.0000
     Marker->ARP North Ecc(m) : 0.0000
     Marker->ARP East Ecc(m)  : 0.0000
     Alignment from True N    : 0 deg
     Antenna Radome Type      : NONE
     Radome Serial Number     : (A4 from rcvr_ant.tab; see instructions)
     Antenna Cable Type       : (vendor & type number)
     Antenna Cable Length     : (m)
     Date Installed           : 2012-10-10T22:30Z
     Date Removed             : 2012-10-11T13:10Z
     Additional Information   : Antenna change, short duration

4.3  Antenna Type             : TRM57971.00     NONE
     Serial Number            : 1441107284
     Antenna Reference Point  : BAM
     Marker->ARP Up Ecc. (m)  : 0.0000
     Marker->ARP North Ecc(m) : 0.0000
     Marker->ARP East Ecc(m)  : 0.0000
     Alignment from True N    : 0 deg
     Antenna Radome Type      : NONE
     Radome Serial Number     : (A4 from rcvr_ant.tab; see instructions)
     Antenna Cable Type       : Trimble
     Antenna Cable Length     : 30
     Date Installed           : 2012-10-11T13:20Z
     Date Removed             : 2022-02-08T18:36Z 
     Additional Information   : Ant type & sn corrected 2013-AUG-30 from photo.
                              : Site decommisisoned 2022-FEB-08

4.x  Antenna Type             : (A20, from rcvr_ant.tab; see instructions)
     Serial Number            : (A*, but note the first A5 is used in SINEX)
     Antenna Reference Point  : (BPA/BCR/XXX from "antenna.gra"; see instr.)
     Marker->ARP Up Ecc. (m)  : (F8.4)
     Marker->ARP North Ecc(m) : (F8.4)
     Marker->ARP East Ecc(m)  : (F8.4)
     Alignment from True N    : (deg; + is clockwise/east)
     Antenna Radome Type      : (A4 from rcvr_ant.tab; see instructions)
     Radome Serial Number     :
     Antenna Cable Type       : (vendor & type number)
     Antenna Cable Length     : (m)
     Date Installed           : (CCYY-MM-DDThh:mmZ)
     Date Removed             : (CCYY-MM-DDThh:mmZ)
     Additional Information   : (multiple lines)


5.   Surveyed Local Ties

5.x  Tied Marker Name         :
     Tied Marker Usage        : (SLR/VLBI/LOCAL CONTROL/FOOTPRINT/etc)
     Tied Marker CDP Number   : (A4)
     Tied Marker DOMES Number : (A9)
     Differential Components from GNSS Marker to the tied monument (ITRS)
       dx (m)                 : (m)
       dy (m)                 : (m)
       dz (m)                 : (m)
     Accuracy (mm)            : (mm)
     Survey method            : (GPS CAMPAIGN/TRILATERATION/TRIANGULATION/etc)
     Date Measured            : (CCYY-MM-DDThh:mmZ)
     Additional Information   : (multiple lines)


6.   Frequency Standard

6.1  Standard Type            : INTERNAL
       Input Frequency        : (if external)
       Effective Dates        : (CCYY-MM-DD/CCYY-MM-DD)
       Notes                  : (multiple lines)

6.x  Standard Type            : (INTERNAL or EXTERNAL H-MASER/CESIUM/etc)
       Input Frequency        : (if external)
       Effective Dates        : (CCYY-MM-DD/CCYY-MM-DD)
       Notes                  : (multiple lines)


7.   Collocation Information

7.x  Instrumentation Type     : (GPS/GLONASS/DORIS/PRARE/SLR/VLBI/TIME/etc)
       Status                 : (PERMANENT/MOBILE)
       Effective Dates        : (CCYY-MM-DD/CCYY-MM-DD)
       Notes                  : (multiple lines)


8.   Meteorological Instrumentation

8.1.1 Humidity Sensor Model   : HUMICA H-sensor (pn 16663)
       Manufacturer           : Vaisala
       Serial Number          :
       Data Sampling Interval : 15 seconds
       Accuracy (% rel h)     : +/-1%(0...90%RH)
                              : +/-2%(90...100%RH)
       Aspiration             : (UNASPIRATED/NATURAL/FAN/etc)
       Height Diff to Ant     : (m)
       Calibration date       : (CCYY-MM-DD)
       Effective Dates        : 1999-05-28/2013-11-06
       Notes                  : NOAA GSOS # 031

8.1.2 Humidity Sensor Model   : WXT520 PTU
       Manufacturer           : Vaisala
       Serial Number          :
       Data Sampling Interval : 30 sec
       Accuracy (% rel h)     : 3% @ 0-90%, 5% @ 90-100% rel h
       Aspiration             : (UNASPIRATED/NATURAL/FAN/etc)
       Height Diff to Ant     : 0.7m
       Calibration date       : (CCYY-MM-DD)
       Effective Dates        : 2013-11-06/CCYY-MM-DD
       Notes                  : (multiple lines)

8.1.x Humidity Sensor Model   :
       Manufacturer           :
       Serial Number          :
       Data Sampling Interval : (sec)
       Accuracy (% rel h)     : (% rel h)
       Aspiration             : (UNASPIRATED/NATURAL/FAN/etc)
       Height Diff to Ant     : (m)
       Calibration date       : (CCYY-MM-DD)
       Effective Dates        : (CCYY-MM-DD/CCYY-MM-DD)
       Notes                  : (multiple lines)

8.2.1 Pressure Sensor Model   : PTB220
       Manufacturer           : Vaisala
       Serial Number          :
       Data Sampling Interval : 15 seconds
       Accuracy               : +/-0.1
       Height Diff to Ant     : 0.26
       Calibration date       : (CCYY-MM-DD)
       Effective Dates        : 1999-05-28/2013-11-06
       Notes                  : NOAA GSOS # 031

8.2.2 Pressure Sensor Model   : WXT520 PTU
       Manufacturer           : Vaisala
       Serial Number          :
       Data Sampling Interval : 30 sec
       Accuracy               : 0.5hPa @ 0-30C, 1.0hPa @ -52C,60C
       Height Diff to Ant     : 0.7m
       Calibration date       : (CCYY-MM-DD)
       Effective Dates        : 2013-11-06/CCYY-MM-DD
       Notes                  : (multiple lines)

8.2.x Pressure Sensor Model   :
       Manufacturer           :
       Serial Number          :
       Data Sampling Interval : (sec)
       Accuracy               : (hPa)
       Height Diff to Ant     : (m)
       Calibration date       : (CCYY-MM-DD)
       Effective Dates        : (CCYY-MM-DD/CCYY-MM-DD)
       Notes                  : (multiple lines)

8.3.1 Temp. Sensor Model      : PT 100 RTD 1/s DIN 43760B
       Manufacturer           : Vaisala
       Serial Number          :
       Data Sampling Interval : 15 seconds
       Accuracy               : +/-0.1 @ 20.0C
       Aspiration             : (UNASPIRATED/NATURAL/FAN/etc)
       Height Diff to Ant     : (m)
       Calibration date       : (CCYY-MM-DD)
       Effective Dates        : 1999-05-28/2013-11-06
       Notes                  : NOAA GSOS # 031

8.3.2 Temp. Sensor Model      : WXT520 PTU
       Manufacturer           : Vaisala
       Serial Number          :
       Data Sampling Interval : 30 sec
       Accuracy               : 0.3deg C @ 20C
       Aspiration             : UNASPIRATED
       Height Diff to Ant     : 0.7m
       Calibration date       : (CCYY-MM-DD)
       Effective Dates        : 2013-11-06/CCYY-MM-DD
       Notes                  : (multiple lines)

8.3.x Temp. Sensor Model      :
       Manufacturer           :
       Serial Number          :
       Data Sampling Interval : (sec)
       Accuracy               : (deg C)
       Aspiration             : (UNASPIRATED/NATURAL/FAN/etc)
       Height Diff to Ant     : (m)
       Calibration date       : (CCYY-MM-DD)
       Effective Dates        : (CCYY-MM-DD/CCYY-MM-DD)
       Notes                  : (multiple lines)

8.4.x Water Vapor Radiometer  :
       Manufacturer           :
       Serial Number          :
       Distance to Antenna    : (m)
       Height Diff to Ant     : (m)
       Calibration date       : (CCYY-MM-DD)
       Effective Dates        : (CCYY-MM-DD/CCYY-MM-DD)
       Notes                  : (multiple lines)

8.5.x Other Instrumentation   : (multiple lines)


9.   Local Ongoing Conditions Possibly Affecting Computed Position

9.1.x Radio Interference      : (TV/CELL PHONE ANTENNA/RADAR/etc)
       Observed Degradations  : (SN RATIO/DATA GAPS/etc)
       Effective Dates        : (CCYY-MM-DD/CCYY-MM-DD)
       Additional Information : (multiple lines)

9.2.x Multipath Sources       : (METAL ROOF/DOME/VLBI ANTENNA/etc)
       Effective Dates        : (CCYY-MM-DD/CCYY-MM-DD)
       Additional Information : (multiple lines)

9.3.x Signal Obstructions     : (TREES/BUILDLINGS/etc)
       Effective Dates        : (CCYY-MM-DD/CCYY-MM-DD)
       Additional Information : (multiple lines)


10.  Local Episodic Effects Possibly Affecting Data Quality

10.x Date                     : (CCYY-MM-DD/CCYY-MM-DD)
     Event                    : (TREE CLEARING/CONSTRUCTION/etc)


11.  On-Site, Point of Contact Agency Information

     Agency                   : NOAA-National Geodetic Survey
     Preferred Abbreviation   : NOAA-NGS
     Mailing Address          : 325 Broadway E/NE42
                              : Boulder, CO 80303
     Primary Contact
       Contact Name           : Francine Coloma
       Telephone (primary)    : (303) 497-3692
       Telephone (secondary)  :
       Fax                    : (303) 497-6513 
       E-mail                 : francine.coloma@noaa.gov
     Secondary Contact
       Contact Name           : 
       Telephone (primary)    : 
       Telephone (secondary)  :
       Fax                    :
       E-mail                 : 
     Additional Information   : (multiple lines)


12.  Responsible Agency (if different from 11.)

     Agency                   : NOAA-National Geodetic Survey 
     Preferred Abbreviation   : NOAA-NGS 
     Mailing Address          : 1315 East-West Hwy. 
                              : Silver Spring, MD 20910
     Primary Contact
       Contact Name           : Don Haw
       Telephone (primary)    : (240) 533-9676
       Telephone (secondary)  :
       Fax                    : 
       E-mail                 : don.haw@noaa.gov
     Secondary Contact
       Contact Name           :
       Telephone (primary)    : 
       Telephone (secondary)  :
       Fax                    :
       E-mail                 : 
     Additional Information   : (multiple lines)


13.  More Information

     Primary Data Center      : https://geodesy.noaa.gov/corsdata/
     Secondary Data Center    : 
     URL for More Information : https://geodesy.noaa.gov/CORS/
     Hardcopy on File
       Site Map               : (Y or URL)
       Site Diagram           : (Y or URL)
       Horizon Mask           : (Y or URL)
       Monument Description   : (Y or URL)
       Site Pictures          : (Y or URL)
     Additional Information   : (multiple lines)
     Antenna Graphics with Dimensions

     https://files.igs.org/pub/station/general/antenna.gra