HBCO 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) : Aris Gust Aspiotes Date Prepared : 2022-08-04 Report Type : UPDATE If Update: Previous Site Log : hbco_20220804.log Modified/Added Sections : 1. Site Identification of the GNSS Monument Site Name : Harbor College Four Character ID : HBCO Monument Inscription : IERS DOMES Number : 49780M001 CDP Number : Monument Description : Wyatt/Agnew drilled-braced Height of the Monument : Monument Foundation : Foundation Depth : Marker Description : Drilled hole in top of center support bolt of : antenna adaptor Date Installed : 2000-04-05T00:00Z Geologic Characteristic : Sediments Bedrock Type : Bedrock Condition : Fracture Spacing : Fault zones nearby : Distance/activity : Additional Information : SCIGN - Southern California Integrated GPS : Network 2. Site Location Information City or Town : Willmington State or Province : California Country : USA Tectonic Plate : Pacific Approximate Position (ITRF) X coordinate (m) : -2514646.5494 Y coordinate (m) : -4672980.5203 Z coordinate (m) : 3526511.0198 Latitude (N is +) : +334701.13 Longitude (E is +) : -1181708.86 Elevation (m,ellips.) : -26.8718 Additional Information : Los Angeles County. Reference frame used is : ITRF2000. Coordinate system used is WGS84. 3. GNSS Receiver Information 3.1 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : LP03217 Firmware Version : CB00 Elevation Cutoff Setting : 10 deg Date Installed : 2000-04-05T00:00Z Date Removed : 2001-02-01T00:00Z Temperature Stabiliz. : Additional Information : Session programming set to 120 second sample : rate for 24/day until telemetry established. No : data archived until 035 of 2001. 3.2 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : LP00221 Firmware Version : CD00 Elevation Cutoff Setting : 10 deg Date Installed : 2001-02-01T00:00Z Date Removed : 2001-06-04T21:33Z Temperature Stabiliz. : Additional Information : Replaces unit that had bad firmware version : CB00. Telemetry established and sampling : interval increased to 30 seconds. 3.3 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : LP03042 Firmware Version : CD00 Elevation Cutoff Setting : 10 deg Date Installed : 2001-06-04T21:33Z Date Removed : 2009-03-25T02:31Z Temperature Stabiliz. : Additional Information : Replaces unit with a external memory problem. 3.4 Receiver Type : TRIMBLE NETRS Satellite System : GPS Serial Number : 4811146998 Firmware Version : 1.2-5 22OCT2007 Elevation Cutoff Setting : 0 deg Date Installed : 2009-03-25T02:31Z Date Removed : 2017-01-28T00:40Z Temperature Stabiliz. : Additional Information : 3.5 Receiver Type : TPS NET-G3A Satellite System : GPS Serial Number : 618-01058 Firmware Version : 4.7 Oct,18,2016 p2 Elevation Cutoff Setting : 5 deg Date Installed : 2017-01-28T00:48Z Date Removed : 2019-03-25T00:57Z Temperature Stabiliz. : Additional Information : 3.6 Receiver Type : TPS NET-G3A Satellite System : GPS Serial Number : 618-01058 Firmware Version : 4.7 Feb,21,2019 p10 Elevation Cutoff Setting : 5 deg Date Installed : 2019-03-25T00:57Z Date Removed : 2022-08-04T00:45Z Temperature Stabiliz. : Additional Information : 3.7 Receiver Type : SEPT POLARX5 Satellite System : GPS+GLO+GAL+SBAS Serial Number : 3052236 Firmware Version : 5.4.0 Elevation Cutoff Setting : 0 deg Date Installed : 2022-08-04T00:45Z Date Removed : (CCYY-MM-DDThh:mmZ) Temperature Stabiliz. : Additional Information : Upgrade 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 : ASH701945B_M SCIT Serial Number : CR519991728 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0083 Marker->ARP North Ecc(m) : 0 Marker->ARP East Ecc(m) : 0 Alignment from True N : Antenna Radome Type : SCIT Radome Serial Number : 122 Antenna Cable Type : Antenna Cable Length : Date Installed : 2000-04-05T00:00Z Date Removed : 2017-01-28T00:40Z Additional Information : 4.2 Antenna Type : TPSCR.G3 SCIT Serial Number : 383-1769 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0083 Marker->ARP North Ecc(m) : 0 Marker->ARP East Ecc(m) : 0 Alignment from True N : Antenna Radome Type : SCIT Radome Serial Number : 122 Antenna Cable Type : Antenna Cable Length : Date Installed : 2017-01-28T00:48Z Date Removed : 2022-08-04T00:45Z Additional Information : 4.3 Antenna Type : TWIVC6150 SCIT Serial Number : 710161202002210010 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0083 Marker->ARP North Ecc(m) : 0 Marker->ARP East Ecc(m) : 0 Alignment from True N : 0 Antenna Radome Type : SCIT Radome Serial Number : 3956 Antenna Cable Type : Antenna Cable Length : Date Installed : 2022-08-04T00:45Z Date Removed : (CCYY-MM-DDThh:mmZ) Additional Information : UpgradeReplacement 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 : 2022-08-04/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 : UNAVCO Secondary Data Center : URL for More Information : https://www.unavco.org 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 : SITE: SCGN: HBCO, Harbor College SERVICE LOG : DATE: 2022-08-04 00:45:00 SIS PAGE: : https://anss- : sis.scsn.org/sis/sites/site/26002/detail/ SITE : DOWNTIME (UTC): SERVICE DESCRIPTION: I upgraded : the site to Septentrio Equipment, I replaced : 2-DCM100 batteries. I also upgraded the Cell : Modem to 4G RV50X and replaced the Cell antenna. : The Cell Antenna is now a Wilson Omni. SIS : ACTION: FIELD-NEW-DEVICE-INSTALLATION SIS Entry : Date: 2022-08-04 20:35:26 actiondate=2022-08-04 : 00:45:00+00:00 BATTERY INTERSTATE DCM 100AH S/N : AUTO220804203343442-26002 BATTERY INTERSTATE DCM : 100AH S/N AUTO220804203345442-26002 ANTENNA : GENERIC 4G OMNI-DIRECTIONAL ANTENNA S/N : AUTO220804203416442-26002 CELLULAR-MODEM SIERRA : WIRELESS AIRLINK RV50 S/N QR92250005021016 SIS : ACTION: FIELD-INSTALL-OR-SWAP-GEODETIC-EQUIPMENT : SIS Entry Date: 2022-08-04 20:31:47 : actiondate=2022-08-04 00:45:00+00:00 Removed: : GNSS-ANTENNA TOPCON TPSCR.G3 S/N 383-1769 : Installed: GNSS-ANTENNA TALLYSMAN TWIVC6150 S/N : 710161202002210010 Following settings updated: : EAST-ECC=0 N-ALIGN=0 NORTH-ECC=0 REFERENCE- : POINT=BPA UP-ECC=0.0083 SIS ACTION: FIELD- : INSTALL-OR-SWAP-GEODETIC-EQUIPMENT SIS Entry : Date: 2022-08-04 20:30:04 actiondate=2022-08-04 : 00:45:00+00:00 Removed: GNSS-RECEIVER TOPCON TPS : NET-G3A S/N 618-01058 Installed: GNSS-RECEIVER : SEPTENTRIO POLARX5 S/N 3052236 Following : settings updated: DATA-STREAM=BINEX ELEVATION- : CUTOFF=0 FIRMWARE-VERSION=5.4.0 FREQ-STANDARD- : TYPE=Internal INTERVAL=1 LOG-FILES=BINEX : SATELLITE-SYSTEM=GPS+GLO+GAL+SBAS : SOLUTION/TROUBLESHOOT OF PROBLEM: PREVENTIVE : MAINTENANCE: COMMENTS: FIELD TECH: GEODETIC : EQUIPMENT BY CATEGORY: GNSS-ANTENNA TALLYSMAN : TWIVC6150 #710161202002210010 GNSS-RADOME : UNKNOWN SCIT #3956 GNSS-RECEIVER SEPTENTRIO : POLARX5 #3052236 OTHER EQUIPMENT BY : GROUP/CATEGORY: POWER BATTERY INTERSTATE DCM : 100AH #AUTO220804203343442-26002 POWER BATTERY : INTERSTATE DCM 100AH #AUTO220804203345442-26002 : TELEMETRY ANTENNA GENERIC 4G OMNI-DIRECTIONAL : ANTENNA #AUTO220804203416442-26002 TELEMETRY : CELLULAR-MODEM SIERRA WIRELESS AIRLINK RV50 : #QR92250005021016 Antenna Graphics with Dimensions https://files.igs.org/pub/station/general/antenna.gra