BLYT Site Information Form (site log)
     International GNSS Service
     See Instructions at:
       https://files.igs.org/pub/station/general/sitelog_instr.txt

0.   Form

     Prepared by (full name)  : Ryan Turner
     Date Prepared            : 2024-10-08
     Report Type              : UPDATE
     If Update:
      Previous Site Log       : blyt_20241003.log
      Modified/Added Sections : 3 


1.   Site Identification of the GNSS Monument

     Site Name                : Blythe
     Four Character ID        : BLYT
     Monument Inscription     : Riverside County Surveyor Blythe Airbase
     IERS DOMES Number        : 40479M001
     CDP Number               : 
     Monument Description     : Wyatt/Agnew drilled-braced
       Height of the Monument : 
       Monument Foundation    : 
       Foundation Depth       : 
     Marker Description       : 
     Date Installed           : 1994-01-13T00:00Z
     Geologic Characteristic  : SAND
       Bedrock Type           : 
       Bedrock Condition      : 
       Fracture Spacing       : unknown
       Fault zones nearby     : 
         Distance/activity    : 
     Additional Information   : three angled, 9/16 in. stainless steel driven
                              : rods driven to 30 ft., center rod driven to 40
                              : ft., 3 in. PVC pipe filled with insulation to
                              : isolate upper 4 ft. of rods from surrounding
                              : soil, concrete pad at surface, 1 in. diameter by
                              : 3 ft. length stainless steel rod attached to top
                              : of center rod at 1.5 ft. depth baseplate is 3
                              : in. diameter washer, 1/2 in. thick, nut is
                              : standard 5/8 in., 5/8 in. thick, rod is 1 in.
                              : diameter 316 seris stainless steel


2.   Site Location Information

     City or Town             : Blythe
     State or Province        : California
     Country                  : USA
     Tectonic Plate           : NORTH AMERICAN
     Approximate Position (ITRF)
       X coordinate (m)       : -2223206.7200
       Y coordinate (m)       : -4830299.8000
       Z coordinate (m)       : 3510587.5900
       Latitude (N is +)      : +333637.49
       Longitude (E is +)     : -1144253.46
       Elevation (m,ellips.)  : 85.9000
     Additional Information   : SCIGN - Southern California Integrated GPS
                              : Network Riverside County.


3.   GNSS Receiver Information

3.1  Receiver Type            : ASHTECH Z-XII3
     Satellite System         : GPS
     Serial Number            : 03435
     Firmware Version         : NAV 1C00, CHN 1C00
     Elevation Cutoff Setting : 
     Date Installed           : 1994-01-13T00:00Z
     Date Removed             : 1994-01-25T00:00Z
     Temperature Stabiliz.    : 
     Additional Information   : First measurements.

3.2  Receiver Type            : ASHTECH Z-XII3
     Satellite System         : GPS
     Serial Number            : 03435
     Firmware Version         : NAV 1C01, CHN 1C00
     Elevation Cutoff Setting : 
     Date Installed           : 1994-01-25T00:00Z
     Date Removed             : 1994-07-11T00:00Z
     Temperature Stabiliz.    : 
     Additional Information   : Configuration Change: Firmware upgrade and
                              : sampling interval increased to 30 seconds.

3.3  Receiver Type            : ASHTECH Z-XII3
     Satellite System         : GPS
     Serial Number            : 03435
     Firmware Version         : NAV 1D00, CHN 1C01
     Elevation Cutoff Setting : 
     Date Installed           : 1994-07-11T00:00Z
     Date Removed             : 1995-08-03T00:00Z
     Temperature Stabiliz.    : 
     Additional Information   : Configuration Change: Firmware upgrade and
                              : sampling interval increased to 30 seconds.

3.4  Receiver Type            : ASHTECH Z-XII3
     Satellite System         : GPS
     Serial Number            : 03435
     Firmware Version         : NAV 1E00, CHN 1C50
     Elevation Cutoff Setting : 
     Date Installed           : 1995-08-03T00:00Z
     Date Removed             : 1996-12-18T21:45Z
     Temperature Stabiliz.    : 
     Additional Information   : Configuration Change: Firmware upgrade and
                              : sampling interval increased to 30 seconds.

3.5  Receiver Type            : ASHTECH Z-XII3
     Satellite System         : GPS
     Serial Number            : 01894
     Firmware Version         : NAV 1E95, CHN 1D01
     Elevation Cutoff Setting : 
     Date Installed           : 1996-12-18T21:45Z
     Date Removed             : 1997-01-07T19:29Z
     Temperature Stabiliz.    : 
     Additional Information   : Receiver Swap, Firmware Upgrade Original
                              : receiver refused upgrade

3.6  Receiver Type            : ASHTECH Z-XII3
     Satellite System         : GPS
     Serial Number            : 03435
     Firmware Version         : NAV 1E95, CHN 1D01
     Elevation Cutoff Setting : 
     Date Installed           : 1997-01-07T19:29Z
     Date Removed             : 1998-05-14T00:00Z
     Temperature Stabiliz.    : 
     Additional Information   : Firmware Upgrade Original receiver replaced

3.7  Receiver Type            : ASHTECH Z-XII3
     Satellite System         : GPS
     Serial Number            : LP02812
     Firmware Version         : 1F50
     Elevation Cutoff Setting : 
     Date Installed           : 1998-05-14T00:00Z
     Date Removed             : 1999-07-14T18:00Z
     Temperature Stabiliz.    : 
     Additional Information   : SCIGN receiver Model 700845-10(E)

3.8  Receiver Type            : ASHTECH Z-XII3
     Satellite System         : GPS
     Serial Number            : LP02895
     Firmware Version         : CC00
     Elevation Cutoff Setting : 10 deg
     Date Installed           : 1999-07-14T18:00Z
     Date Removed             : 2000-10-25T20:48Z
     Temperature Stabiliz.    : 
     Additional Information   : Receiver swap for GPS week rollover-compliance.

3.9  Receiver Type            : ASHTECH Z-XII3
     Satellite System         : GPS
     Serial Number            : LP02908
     Firmware Version         : CC00
     Elevation Cutoff Setting : 10 deg
     Date Installed           : 2000-10-25T20:48Z
     Date Removed             : 2005-11-10T00:00Z
     Temperature Stabiliz.    : 
     Additional Information   : Replaced damaged receiver

3.10 Receiver Type            : ASHTECH Z-XII3
     Satellite System         : GPS
     Serial Number            : LP02772
     Firmware Version         : CD00
     Elevation Cutoff Setting : 00 deg
     Date Installed           : 2005-11-10T00:00Z
     Date Removed             : 2009-08-19T21:01Z
     Temperature Stabiliz.    : 
     Additional Information   : 

3.11 Receiver Type            : TRIMBLE NETRS
     Satellite System         : GPS
     Serial Number            : 4808145635
     Firmware Version         : 1.2-5
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2009-08-19T21:01Z
     Date Removed             : 2011-11-08T22:18Z
     Temperature Stabiliz.    : 
     Additional Information   : 

3.12 Receiver Type            : TRIMBLE NETRS
     Satellite System         : GPS
     Serial Number            : 4927175272
     Firmware Version         : 1.2-5
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2011-11-08T22:18Z
     Date Removed             : 2019-03-20T22:38Z
     Temperature Stabiliz.    : 
     Additional Information   : 

3.13 Receiver Type            : TRIMBLE NETRS
     Satellite System         : GPS
     Serial Number            : 4927175272
     Firmware Version         : 1.3-2
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2019-03-20T23:10Z
     Date Removed             : 2022-05-11T20:49Z
     Temperature Stabiliz.    : 
     Additional Information   : 

3.14 Receiver Type            : SEPT POLARX5
     Satellite System         : GPS+GLO+GAL+SBAS
     Serial Number            : 3052388
     Firmware Version         : 5.4.0
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2022-05-11T20:49Z
     Date Removed             : (CCYY-MM-DDThh:mmZ)
     Temperature Stabiliz.    : 
     Additional Information   : 

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             : ASH700228D      SNOW
     Serial Number            : 700228D2941
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  : 0.0360
     Marker->ARP North Ecc(m) : 0.0000
     Marker->ARP East Ecc(m)  : 0.0000
     Alignment from True N    : 
     Antenna Radome Type      : SNOW
     Radome Serial Number     : 
     Antenna Cable Type       : 
     Antenna Cable Length     : 
     Date Installed           : 1994-01-13T00:00Z
     Date Removed             : 1995-08-03T00:00Z
     Additional Information   : 

4.2  Antenna Type             : ASH700936B_M    ENCL
     Serial Number            : CR11933
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  : 0.0347
     Marker->ARP North Ecc(m) : 0.0000
     Marker->ARP East Ecc(m)  : 0.0000
     Alignment from True N    : 
     Antenna Radome Type      : ENCL
     Radome Serial Number     : 
     Antenna Cable Type       : 
     Antenna Cable Length     : 
     Date Installed           : 1995-08-03T00:00Z
     Date Removed             : 2000-03-30T00:20Z
     Additional Information   : Dome removed - site enclosure dome in use

4.3  Antenna Type             : ASH701945B_M    ENCL
     Serial Number            : CR519991710
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  : 0.0332
     Marker->ARP North Ecc(m) : 0.0000
     Marker->ARP East Ecc(m)  : 0.0000
     Alignment from True N    : 0
     Antenna Radome Type      : ENCL
     Radome Serial Number     : 
     Antenna Cable Type       : 
     Antenna Cable Length     : 
     Date Installed           : 2000-03-30T00:20Z
     Date Removed             : 2022-05-11T20:49Z
     Additional Information   : Antenna change

4.4  Antenna Type             : TWIVC6050       SCIS
     Serial Number            : VC6150L1908270003
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  : 0.0332
     Marker->ARP North Ecc(m) : 
     Marker->ARP East Ecc(m)  : 
     Alignment from True N    : 0
     Antenna Radome Type      : SCIS
     Radome Serial Number     : 2821
     Antenna Cable Type       : 
     Antenna Cable Length     : 
     Date Installed           : 2022-05-11T20:49Z
     Date Removed             : (CCYY-MM-DDThh:mmZ)
     Additional Information   : 

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        : 
       Effective Dates        : 1994-01-13/CCYY-MM-DD
       Notes                  : 

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.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.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.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 Interferences    : (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/BUILDINGS/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                   : USGS Southern California Geodetic Network
     Preferred Abbreviation   : SCGN
     Mailing Address          : 525 South Wilson Avenue. Pasadena, CA 91106
     Primary Contact
       Contact Name           : USGS SCGN Operators
       Telephone (primary)    : 650-329-4677
       Telephone (secondary)  : 
       Fax                    : 
       E-mail                 : scgn-operators@usgs.gov
     Secondary Contact
       Contact Name           : 
       Telephone (primary)    : 
       Telephone (secondary)  : 
       Fax                    : 
       E-mail                 : 
     Additional Information   : (multiple lines)

12.  Responsible Agency (if different from 11.)

     Agency                   : 
     Preferred Abbreviation   : 
     Mailing Address          : 
     Primary Contact
       Contact Name           : 
       Telephone (primary)    : 
       Telephone (secondary)  : 
       Fax                    : 
       E-mail                 : 
     Secondary Contact
       Contact Name           : 
       Telephone (primary)    : 
       Telephone (secondary)  : 
       Fax                    : 
       E-mail                 : 
     Additional Information   : (multiple lines)

13.  More Information

     Primary Data Center      : CDDIS
     Secondary Data Center    : IGN
     URL for More Information : https://cddis.nasa.gov/
     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   : 
     Antenna Graphics with Dimensions

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