GACR00USA Site Information Form EGPSSO Continuously Operating Reference Station See Instructions at: https://files.igs.org/pub/station/general/sitelog_instr.txt 0. Form Prepared by (full name) : Don Haw Date Prepared : 2023-09-12 Report Type : UPDATE If Update: Previous Site Log : gacr_20200428.log Modified/Added Sections : 3.4 1. Site Identification of the GNSS Monument Site Name : Cochran Four Character ID : GACR Monument Inscription : IERS DOMES Number : CDP Number : Monument Description : STEEL MAST Height of the Monument : 9.8m Monument Foundation : MASONARY BUILDING Foundation Depth : Marker Description : ANTENNA MOUNT Date Installed : 2005-05-03T00:00Z Geologic Characteristic : Bedrock Type : Bedrock Condition : Fracture Spacing : Fault zones nearby : Distance/activity : Additional Information : BRACKETED AND BOLTED TO AN ESTABLISHED : MASONARY BUILDING WITH A CONCRETE FOUNDATION. 2. Site Location Information City or Town : Cochran State or Province : Georgia Country : United States Tectonic Plate : North American Approximate Position (ITRF) X coordinate (m) : 624725.368 Y coordinate (m) : -5355319.968 Z coordinate (m) : 3396234.728 Latitude (N is +) : +322251.46 Longitude (E is +) : -0832046.42 Elevation (m,ellips.) : 97.8 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 4700 Satellite System : GPS Serial Number : 0220216411 Firmware Version : 1.3 Elevation Cutoff Setting : 5 Date Installed : 2005-05-03 Date Removed : 2008-04-03 Temperature Stabiliz. : 20 Additional Information : Receiver replaced. 3.2 Receiver Type : TRIMBLE NETR5 Satellite System : GPS+GLO Serial Number : 4626K01845 Firmware Version : 3.50 Elevation Cutoff Setting : 5 Date Installed : 2008-04-03 Date Removed : 2017-10-19T19:17Z Temperature Stabiliz. : 20 Additional Information : Firmware correction on 8/15/08. : Typo error when entered on 04/03/08. 3.3 Receiver Type : CHAMPION QB1 Satellite System : GPS+GLO Serial Number : QB1029280056 Firmware Version : 5.21 Elevation Cutoff Setting : 5 Date Installed : 2017-10-19T19:27Z Date Removed : 2023-07-26T15:00Z Temperature Stabiliz. : 20 Additional Information : New receiver and firmware 3.4 Receiver Type : CHAMPION QB1 Satellite System : GPS+GLO Serial Number : QB1029280056 Firmware Version : 5.6 Elevation Cutoff Setting : 5 Date Installed : 2023-07-26T15:00Z Date Removed : (CCYY-MM-DDThh:mmZ) Temperature Stabiliz. : 20 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 : TRM33429.00+GP NONE Serial Number : 0220218689 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 : (deg; + is clockwise/east) Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : TRIMBLE TIMA40G-100 Antenna Cable Length : 30.5 Date Installed : 2005-05-03 Date Removed : 2008-04-03 Additional Information : Antenna upgrade. 4.2 Antenna Type : TRM55971.00 NONE Serial Number : 60167963 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 : (deg; + is clockwise/east) Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : TRIMBLE TIMA40G-100 Antenna Cable Length : 30.5 Date Installed : 2008-04-03 Date Removed : 2010-08-17 Additional Information : Antenna replaced. 4.3 Antenna Type : TRM57971.00 NONE Serial Number : 1441027059 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 : (deg; + is clockwise/east) Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : TRIMBLE TIMA40G-100 Antenna Cable Length : 30.5 Date Installed : 2010-08-17 Date Removed : 2019-12-19T17:48Z Additional Information : 4.4 Antenna Type : ARFAS13DFS ARFS Serial Number : 3198105 Antenna Reference Point : BCR Marker->ARP Up Ecc. (m) : 0.0750 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 deg Antenna Radome Type : ARFS Radome Serial Number : Antenna Cable Type : TRIMBLE TIMA40G-100 Antenna Cable Length : 30.5 Date Installed : 2019-12-19T18:03Z Date Removed : (CCYY-MM-DDThh:mmZ) Additional Information : new antenna installed a seco levelling : mount here, raising it by 7.5 cm 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 : 2005-05-03/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 : Middle Georgia College Preferred Abbreviation : MGC Mailing Address : 1100 2ND STREET S.E., COCHRAN, GA 31014 Primary Contact Contact Name : Roger Purcell Telephone (primary) : 478-934-3549 Telephone (secondary) : 478-934-3549 Fax : 478-934-3554 E-mail : RPURCELL@MGC.EDU Secondary Contact Contact Name : Lonnie Sears Telephone (primary) : 770-416-7511 Telephone (secondary) : 678-878-6610 Fax : 770-0416-6759 E-mail : LSEARS@EGPS.NET Additional Information : (multiple lines) 12. Responsible Agency (if different from 11.) Agency : EGPS SOLUTIONS Preferred Abbreviation : EGPS Mailing Address : 4317 PARK DRIVE, NORCROSS, GA 30093 Primary Contact Contact Name : LONNIE SEARS Telephone (primary) : 7704167511 Telephone (secondary) : 6788786610 Fax : 7704166759 E-mail : LSEARS@EGPS.NET Secondary Contact Contact Name : NED GILCREST Telephone (primary) : 7704167511 Telephone (secondary) : Fax : 7704166759 E-mail : NGILCRIST@TRAVISPRUITT.COM 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 Site Diagram : y Horizon Mask : y Monument Description : y Site Pictures : (Y or URL) Additional Information : (multiple lines) Antenna Graphics with Dimensions https://files.igs.org/pub/station/general/antenna.gra