NCWM Site Information Form NCGS Continuously Operating Reference Station See Instructions at: https://files.igs.org/pub/station/general/sitelog_instr.txt 0. Form Prepared by (full name) : Lijuan Sun Date Prepared : 2023-09-07 Report Type : UPDATE If Update: Previous Site Log : ncwm_20200526.log Modified/Added Sections : 4.2 1. Site Identification of the GNSS Monument Site Name : Williamston 2 Four Character ID : NCWM Monument Inscription : IERS DOMES Number : (A9) CDP Number : (A4) Monument Description : METAL MAST Height of the Monument : 5.4 m Monument Foundation : Concrete foundation Foundation Depth : 1.8 m Marker Description : Braced steel mount Date Installed : 2012-02-02T00:00Z Geologic Characteristic : (BEDROCK/CLAY/CONGLOMERATE/GRAVEL/SAND/etc) 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 : NO Distance/activity : (multiple lines) Additional Information : Braced steel tower mounted on concrete : Foundation. Hole was augered and is : 6 feet deep. The foundation is round, : but the top is squared off 2. Site Location Information City or Town : Williamston State or Province : North Carolina Country : United States Tectonic Plate : North American Approximate Position (ITRF) X coordinate (m) : 1161487.313 Y coordinate (m) : -5045037.522 Z coordinate (m) : 3712945.923 Latitude (N is +) : +354949.78 Longitude (E is +) : -0770206.22 Elevation (m,ellips.) : -23.3 Additional Information : ARP IGS08 POSITION (EPOCH 2005.00) : Computed in June 2012 using 35 days of data. 3. GNSS Receiver Information 3.1 Receiver Type : TRIMBLE NETR5 Satellite System : GPS+GLO Serial Number : 4828K57137 Firmware Version : 4.17 Elevation Cutoff Setting : 5 deg Date Installed : 2012-04-19 Date Removed : 2014-04-21T04:06Z Temperature Stabiliz. : (none or tolerance in degrees c) Additional Information : (multiple lines) 3.2 Receiver Type : TRIMBLE NETR5 Satellite System : GPS+GLO Serial Number : 4828K57137 Firmware Version : 4.41 Elevation Cutoff Setting : 5 deg Date Installed : 2014-04-21T04:06Z Date Removed : 2015-01-13T07:55Z Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : (multiple lines) 3.3 Receiver Type : TRIMBLE NETR5 Satellite System : GPS+GLO Serial Number : 4828K57137 Firmware Version : 4.85 Elevation Cutoff Setting : 5 deg Date Installed : 2015-01-13T07:55Z Date Removed : 2015-05-29T18:16Z Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : (multiple lines) 3.4 Receiver Type : TRIMBLE NETR5 Satellite System : GPS+GLO Serial Number : 4828K57137 Firmware Version : 4.87 Elevation Cutoff Setting : 5 deg Date Installed : 2015-05-29T18:16Z Date Removed : 2017-02-28T08:21Z Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : (multiple lines) 3.5 Receiver Type : TRIMBLE NETR5 Satellite System : GPS+GLO Serial Number : 4828K57137 Firmware Version : 48.01 Elevation Cutoff Setting : 5 deg Date Installed : 2017-02-28T08:21Z Date Removed : 2018-06-21T17:07Z Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : (multiple lines) 3.6 Receiver Type : TRIMBLE ALLOY Satellite System : GPS+GLO+GAL Serial Number : 5818R40018 Firmware Version : 5.33 Elevation Cutoff Setting : 5 deg Date Installed : 2018-06-21T17:07Z Date Removed : 2018-12-20 Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : new receiver and firmware 3.7 Receiver Type : TRIMBLE ALLOY Satellite System : GPS+GLO+GAL Serial Number : 5818R40018 Firmware Version : 5.37 Elevation Cutoff Setting : 5 deg Date Installed : 2018-12-20 Date Removed : 2019-09-24T04:24Z Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : new firmware 3.8 Receiver Type : TRIMBLE ALLOY Satellite System : GPS+GLO+GAL Serial Number : 5818R40018 Firmware Version : 5.42 Elevation Cutoff Setting : 5 deg Date Installed : 2019-09-24T04:24Z Date Removed : 2020-01-16T05:22Z Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : new firmware 3.9 Receiver Type : TRIMBLE ALLOY Satellite System : GPS+GLO+GAL Serial Number : 5818R40018 Firmware Version : 5.44 Elevation Cutoff Setting : 5 deg Date Installed : 2020-01-16T05:22Z Date Removed : 2020-05-20T04:12Z Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : new firmware 3.10 Receiver Type : TRIMBLE ALLOY Satellite System : GPS+GLO+GAL Serial Number : 5818R40018 Firmware Version : 5.45 Elevation Cutoff Setting : 5 deg Date Installed : 2020-05-20T04:12Z Date Removed : (CCYY-MM-DDThh:mmZ) Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : new firmware 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 : TRM57971.00 NONE Serial Number : 30975448 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 : Antenna Cable Type : LMR 400 Antenna Cable Length : 45.7 m Date Installed : 2012-04-19 Date Removed : 2017-01-11T14:55Z Additional Information : Antenna change 4.2 Antenna Type : TRM57971.00 NONE Serial Number : 2512755577 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 : Antenna Cable Type : LMR 400 Antenna Cable Length : 45.7 m Date Installed : 2017-01-11T14:55Z Date Removed : 2018-06-21T17:07Z Additional Information : (multiple lines) 4.3 Antenna Type : TRM115000.00 NONE Serial Number : 6122223826 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 : Antenna Cable Type : LMR 400 Antenna Cable Length : 45.7 m Date Installed : 2018-06-21T17:07Z Date Removed : (CCYY-MM-DDThh:mmZ) Additional Information : new antenna 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 : 2012-04-19/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 7.1 Instrumentation Type : (GPS/GLONASS/DORIS/PRARE/SLR/VLBI/TIME/etc) Status : (PERMANENT/MOBILE) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 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 : 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) 8.1.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 : 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) 8.2.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 : 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) 8.3.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) 8.4.1 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) 8.4.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) 8.5.1 Other Instrumentation : (multiple lines) 8.5.x Other Instrumentation : (multiple lines) 9. Local Ongoing Conditions Possibly Affecting Computed Position 9.1.1 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) 9.1.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) 9.2.1 Multipath Sources : (METAL ROOF/DOME/VLBI ANTENNA/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) 9.3.1 Signal Obstructions : (TREES/BUILDLINGS/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 10.1 Date : (CCYY-MM-DD/CCYY-MM-DD) Event : (TREE CLEARING/CONSTRUCTION/etc) 10.x Date : (CCYY-MM-DD/CCYY-MM-DD) Event : (TREE CLEARING/CONSTRUCTION/etc) 11. On-Site, Point of Contact Agency Information Agency : North Carolina Geodetic Survey Preferred Abbreviation : NCGS Mailing Address : 121 West Jones Street : Raleigh, NC 27603 Primary Contact Contact Name : Bart Alligood Telephone (primary) : 919-948-7834 Telephone (secondary) : 919-733-3836 Fax : E-mail : bart.alligood@ncdps.gov Secondary Contact Contact Name : Gary Thompson Telephone (primary) : 919-948-7844 Telephone (secondary) : 919-773-3836 Fax : E-mail : gary.thompson@ncdps.gov Additional Information : (multiple lines) 12. Responsible Agency (if different from 11.) Agency : (multiple lines) Preferred Abbreviation : (A10) Mailing Address : (multiple lines) 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 : 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