MODB 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) : Mario Aranha Date Prepared : 2024-11-07 Report Type : UPDATE If Update: Previous Site Log : modb_20241101.log Modified/Added Sections : 2 1. Site Identification of the GNSS Monument Site Name : Modoc Plateau Four Character ID : MODB Monument Inscription : IERS DOMES Number : 44514M001 CDP Number : Monument Description : CONCRETE PILLAR Height of the Monument : Monument Foundation : Foundation Depth : Marker Description : Date Installed : 1999-11-11T00:00Z Geologic Characteristic : BEDROCK Bedrock Type : Bedrock Condition : Fracture Spacing : Fault zones nearby : Distance/activity : Additional Information : Reinforced concrete monument, 0.5 m high, 0.3 m : in diameter. Monument is fastened to underlying : rock with cemented reinforcing rods. 1.5" pipe : cemented into concrete pillar for SCIGN adaptor. : Reference point is mark on SCIGN adaptor. 2. Site Location Information City or Town : Rural, near Alturas State or Province : California Country : USA Tectonic Plate : North American Approximate Position (ITRF) X coordinate (m) : -2399442.8863 Y coordinate (m) : -4105688.0310 Z coordinate (m) : 4238581.8809 Latitude (N is +) : +415408.37 Longitude (E is +) : -1201810.21 Elevation (m,ellips.) : 1567.2060 Additional Information : X,Y,Z is IGb14 realization of ITRF14 reference : frame, 2024.6066 reference epoch. 3. GNSS Receiver Information 3.1 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : 700570C04693 Firmware Version : CC11 Elevation Cutoff Setting : Date Installed : 1999-11-11T00:00Z Date Removed : 2001-02-08T00:29Z Temperature Stabiliz. : Additional Information : 3.2 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : LP01046 Firmware Version : CD00 Elevation Cutoff Setting : Date Installed : 2001-02-08T00:29Z Date Removed : 2006-07-19T00:00Z Temperature Stabiliz. : Additional Information : 3.3 Receiver Type : ASHTECH UZ-12 Satellite System : GPS Serial Number : ZR520014804 Firmware Version : CJ10 Elevation Cutoff Setting : Date Installed : 2006-07-19T00:00Z Date Removed : 2009-08-18T18:30Z Temperature Stabiliz. : Additional Information : 3.4 Receiver Type : TRIMBLE NETRS Satellite System : GPS Serial Number : 4610206088 Firmware Version : 1.1-5 Elevation Cutoff Setting : 0 deg Date Installed : 2009-08-18T18:30Z Date Removed : 2010-09-30T17:14Z Temperature Stabiliz. : Additional Information : 3.5 Receiver Type : TRIMBLE NETRS Satellite System : GPS Serial Number : 4610206088 Firmware Version : 1.3-0 Elevation Cutoff Setting : 0 deg Date Installed : 2010-09-30T17:14Z Date Removed : 2015-08-19T00:04Z Temperature Stabiliz. : Additional Information : 3.6 Receiver Type : TRIMBLE NETRS Satellite System : GPS Serial Number : 4610206088 Firmware Version : 1.3-2 Elevation Cutoff Setting : 0 deg Date Installed : 2015-08-19T00:04Z Date Removed : 2019-04-24T16:49Z Temperature Stabiliz. : Additional Information : 3.7 Receiver Type : SEPT POLARX5 Satellite System : GPS+GLO Serial Number : 3021095 Firmware Version : 5.2.0 Elevation Cutoff Setting : 0 deg Date Installed : 2019-04-24T16:49Z Date Removed : 2021-01-29T00:00Z Temperature Stabiliz. : Additional Information : 3.8 Receiver Type : SEPT POLARX5 Satellite System : GPS+GLO Serial Number : 3021095 Firmware Version : 5.4.0 Elevation Cutoff Setting : 0 deg Date Installed : 2021-01-29T00:00Z Date Removed : 2022-11-29T00:00Z Temperature Stabiliz. : Additional Information : 3.9 Receiver Type : SEPT POLARX5 Satellite System : GPS+GLO Serial Number : 3021095 Firmware Version : 5.5.0 Elevation Cutoff Setting : 0 deg Date Installed : 2022-11-29T00:00Z 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 : ASH701945B_M SCIT Serial Number : CR519992601 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0083 Marker->ARP North Ecc(m) : Marker->ARP East Ecc(m) : Alignment from True N : 0 Antenna Radome Type : SCIT Radome Serial Number : 00127 Antenna Cable Type : Antenna Cable Length : Date Installed : 1999-11-11T00:00Z Date Removed : 2001-02-09T00:29Z Additional Information : SCIGN Adaptor Mounted on permanently installed : SCIGN adapter. Antenna height is standard value : relative to adapter reference point, a dimpled : nub. Radome is SCIGN Tall 4.2 Antenna Type : ASH701945B_M SCIT Serial Number : CR20001206 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0083 Marker->ARP North Ecc(m) : Marker->ARP East Ecc(m) : Alignment from True N : 0 Antenna Radome Type : SCIT Radome Serial Number : 00127 Antenna Cable Type : Antenna Cable Length : Date Installed : 2001-02-09T00:29Z Date Removed : (CCYY-MM-DDThh:mmZ) Additional Information : SCIGN Adaptor Mounted on permanently installed : SCIGN adapter. Antenna height is standard value : relative to adapter reference point, a dimpled : nub. Radome is SCIGN Tall 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.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 : UC Berkeley Preferred Abbreviation : BARD Mailing Address : University of California, Berkeley, 307 McCone : Hall #4760, Berkeley CA 94720-4760 Primary Contact Contact Name : Mario Aranha Telephone (primary) : 510-643-3898 Telephone (secondary) : Fax : E-mail : mario@seismo.berkeley.edu Secondary Contact Contact Name : Jonah Merritt Telephone (primary) : Telephone (secondary) : Fax : E-mail : jmerritt@berkeley.edu 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 : NCEDC Secondary Data Center : URL for More Information : https://ncedc.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 : Antenna Graphics with Dimensions https://files.igs.org/pub/station/general/antenna.gra