BREW00USA Site Information Form (site log) International GNSS Service See Instructions at: https://files.igs.org/pub/station/general/sitelog_instr_v2.0.txt 0. Form Prepared by (full name) : Tatevik Shakhbandaryan Date Prepared : 2023-03-01 Report Type : update If Update: Previous Site Log : brew_20210505.log Modified/Added Sections : 3.8,3.9 1. Site Identification of the GNSS Monument Site Name : Brewster VLBA Nine Character ID : BREW00USA Monument Inscription : BREW IERS DOMES Number : 40473M001 CDP Number : Monument Description : STEEL MAST Height of the Monument : 1.5 m Monument Foundation : CONCRETE BLOCK Foundation Depth : 4.0 m Marker Description : SCIGN Mount Date Installed : 2001-11-09T00:00Z Geologic Characteristic : SAND Bedrock Type : Bedrock Condition : Fracture Spacing : Fault zones nearby : Distance/activity : Additional Information : The monument consist of a steel mast : with a steel bottom plate bolted to a : JPL steel marker plate. The JPL plate : is set atop a 14 foot concrete pillar : buried to a depth of 12 feet. The antenna : mount on top of the steel mast is a : SCIGN mount. Antenna height is 0.0083 m. 2. Site Location Information City or Town : Brewster State or Province : Washington Country or Region : Tectonic Plate : NORTH AMERICAN Approximate Position (ITRF) X coordinate (m) : -2112007.1404 Y coordinate (m) : -3705351.8421 Z coordinate (m) : 4726827.1606 Latitude (N is +) : +480753.49 Longitude (E is +) : -1194057.48 Elevation (m,ellips.) : 238.6 Additional Information : 3. GNSS Receiver Information 3.1 Receiver Type : ASHTECH UZ-12 Satellite System : GPS Serial Number : zr520013805 Firmware Version : CJ10 Elevation Cutoff Setting : 4 deg Date Installed : 2001-11-08T00:00Z Date Removed : 2005-01-27T00:00Z Temperature Stabiliz. : none Additional Information : UNAVCO ID 70794. 3.2 Receiver Type : ASHTECH UZ-12 Satellite System : GPS Serial Number : ZR220014903 Firmware Version : CJ12 Elevation Cutoff Setting : 4 deg Date Installed : 2005-02-12T00:00Z Date Removed : 2007-11-27T22:00Z Temperature Stabiliz. : none Additional Information : UNAVCO ID 70828. 3.3 Receiver Type : ASHTECH UZ-12 Satellite System : GPS Serial Number : ZR20012101 Firmware Version : CQ00 Elevation Cutoff Setting : 4 deg Date Installed : 2007-11-28T00:00Z Date Removed : 2018-06-07T18:00Z Temperature Stabiliz. : none Additional Information : UNAVCO ID 12703 3.4 Receiver Type : SEPT POLARX5TR Satellite System : GPS+GLO+GAL+BDS+QZSS Serial Number : 3013938 Firmware Version : 5.2.0 Elevation Cutoff Setting : 0 deg Date Installed : 2018-06-07T18:00Z Date Removed : 2019-09-11T17:05Z Temperature Stabiliz. : none Additional Information : Timing receiver has inputs for 1pps and 10 Hz. 3.5 Receiver Type : SEPT POLARX5TR Satellite System : GPS+GLO+GAL+BDS+QZSS Serial Number : 3013938 Firmware Version : 0.0.0-181002 Elevation Cutoff Setting : 0 deg Date Installed : 2019-09-11T17:05Z Date Removed : 2019-12-31T06:58Z Temperature Stabiliz. : none Additional Information : Timing receiver has inputs for 1pps and 10 Hz. 3.6 Receiver Type : SEPT POLARX5TR Satellite System : GPS+GLO+GAL+BDS+QZSS Serial Number : 3013938 Firmware Version : 5.3.0 Elevation Cutoff Setting : 0 deg Date Installed : 2019-12-31T06:58Z Date Removed : 2020-01-30T22:53Z Temperature Stabiliz. : none Additional Information : Timing receiver has inputs for 1pps and 10 Hz. 3.7 Receiver Type : SEPT POLARX5TR Satellite System : GPS+GLO+GAL+BDS+QZSS Serial Number : 3013938 Firmware Version : 5.3.2 Elevation Cutoff Setting : 0 deg Date Installed : 2020-01-30T22:53Z Date Removed : 2021-02-01T22:12Z Temperature Stabiliz. : none Additional Information : Timing receiver has inputs for 1pps and 10 Hz. 3.8 Receiver Type : SEPT POLARX5TR Satellite System : GPS+GLO+GAL+BDS+QZSS Serial Number : 3013938 Firmware Version : 5.4.0 Elevation Cutoff Setting : 0 deg Date Installed : 2021-02-01T22:12Z Date Removed : 2023-02-28T02:07Z Temperature Stabiliz. : none Additional Information : Timing receiver has inputs for 1pps and 10 Hz. 3.9 Receiver Type : SEPT POLARX5TR Satellite System : GPS+GLO+GAL+BDS+QZSS Serial Number : 3013938 Firmware Version : 5.5.0 Elevation Cutoff Setting : 0 deg Date Installed : 2023-02-28T02:07Z Date Removed : (CCYY-MM-DDThh:mmZ) Temperature Stabiliz. : none Additional Information : Timing receiver has inputs for 1pps and 10 Hz. 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 : ASH701945C_M SCIT Serial Number : CR620013703 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0083 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 deg Antenna Radome Type : SCIT Radome Serial Number : Antenna Cable Type : Andrews Corp. Heliax Antenna Cable Length : 49 m Date Installed : 2001-11-08T00:00Z Date Removed : 2007-12-14T18:37Z Additional Information : UNAVCO ID 70799. 4.2 Antenna Type : ASH701945C_M SCIT Serial Number : CR620013703 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0083 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 deg Antenna Radome Type : SCIT Radome Serial Number : Antenna Cable Type : Andrews Corp. Heliax Antenna Cable Length : 49 m Date Installed : 2007-12-14T18:37Z Date Removed : 2018-08-15T15:30Z Additional Information : UNAVCO ID 70799. : An N-type, 90 degree "elbow" connector was : added to the antenna cable at the receiver : end to accommodate shelf space. 4.3 Antenna Type : ASH701945C_M NONE Serial Number : CR620013703 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0083 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 : Andrews Corp. Heliax Antenna Cable Length : 49 m Date Installed : 2018-08-15T15:30Z Date Removed : 2018-08-15T23:00Z Additional Information : Dome removed for NGS co-location survey 4.4 Antenna Type : ASH701945C_M SCIT Serial Number : CR620013703 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0083 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 deg Antenna Radome Type : SCIT Radome Serial Number : Antenna Cable Type : Andrews Corp. Heliax Antenna Cable Length : 49 m Date Installed : 2018-08-15T23:00Z Date Removed : 2018-08-16T21:45Z Additional Information : Dome replaced in original orientation 4.5 Antenna Type : ASH701945C_M NONE Serial Number : CR620013703 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0083 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 : Andrews Corp. Heliax Antenna Cable Length : 49 m Date Installed : 2018-08-16T21:45Z Date Removed : 2018-08-16T22:00Z Additional Information : Dome removed briefly to finish NGS survey 4.6 Antenna Type : ASH701945C_M SCIT Serial Number : CR620013703 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0083 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 deg Antenna Radome Type : SCIT Radome Serial Number : Antenna Cable Type : Andrews Corp. Heliax Antenna Cable Length : 49 m Date Installed : 2018-08-16T22:00Z Date Removed : (CCYY-MM-DDThh:mmZ) Additional Information : Dome replaced in original orientation 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 5.1 Tied Marker Name : VLBA Tied Marker Usage : Tied Marker CDP Number : Tied Marker DOMES Number : Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : 0.420 dy (m) : 0.730 dz (m) : -0.942 Accuracy (mm) : Survey method : Date Measured : 2001-11-08T00:00Z Additional Information : Survey method 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 : 2001-11-08/2002-04-25 Notes : 6.2 Standard Type : EXTERNAL H-MASER Input Frequency : 5.0 MHz Effective Dates : 2002-04-25/2005-01-27 Notes : Data publishing halted due to receiver : tracking problems. 6.3 Standard Type : INTERNAL Input Frequency : Effective Dates : 2005-02-12/2005-02-15 Notes : New receiver installed. 6.4 Standard Type : EXTERNAL H-MASER Input Frequency : 5.0 MHz Effective Dates : 2005-02-16/CCYY-MM-DD Notes : New receiver connected to ext. ref. : on 15-Feb-2005 22:34:18.000 UTC. 6.5 Standard Type : EXTERNAL H-MASER Input Frequency : 5.0 MHz Effective Dates : 2005-02-16/2018-06-07 Notes : Cables from H-MASER to receiver replaced : 09-09-2010 at 16:00 UTC. : Maser output checked : +12.1 dbm at 16.2 mw 6.6 Standard Type : EXTERNAL H-MASER Input Frequency : 10.0 MHz Effective Dates : 2018-06-07/CCYY-MM-DD Notes : New receiver connected to Maser on : 07-JUNE-2018 at 18:00 UTC : ** 2023-03-31 SLM 2.0 altered field : input_frequency from its original value: 10 MHz : and 1pps 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 : VLBI Status : PERMANENT Effective Dates : CCYY-MM-DD/CCYY-MM-DD Notes : 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 10.1 Date : 2012-02-01/2012-02-01 Event : Transition from .soc to .ash data types. : For soc data types used soc2rnx to do the : conversion to RINEX data. For ash data types : using teqc directly to do the conversion to : RINEX data. 10.x Date : (CCYY-MM-DD/CCYY-MM-DD) Event : (TREE CLEARING/CONSTRUCTION/etc) 11. On-Site, Point of Contact Agency Information Agency : National Radio Astronomy Observatory Preferred Abbreviation : NRAO Mailing Address : (multiple lines) Primary Contact Contact Name : Mark Hofmann Telephone (primary) : 509-689-3731 Telephone (secondary) : Fax : E-mail : mhofmann@aoc.nrao.edu Secondary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Additional Information : 12. Responsible Agency (if different from 11.) Agency : Jet Propulsion Laboratory Preferred Abbreviation : JPL Mailing Address : 4800 Oak Grove Drive : Pasadena,CA : USA 91109 Primary Contact Contact Name : David A.Stowers Telephone (primary) : 818-354-7055 Telephone (secondary) : 818-354-2950 Fax : 818-393-4965 E-mail : dstowers@jpl.nasa.gov Secondary Contact Contact Name : UNAVCO Network Engineer Telephone (primary) : 303-381-7500 Telephone (secondary) : Fax : 303-381-7451 E-mail : ggn-ops@postal.unavco.org Additional Information : GGN Operations at UNAVCO 13. More Information Primary Data Center : JPL Secondary Data Center : CDDIS URL for More Information : Hardcopy on File Site Map : Y Site Diagram : Y Horizon Mask : Y Monument Description : Y Site Pictures : Y Additional Information : Antenna Graphics with Dimensions ASH701945C_M Dorne Margolin with chokerings milled chokerings, watertight design (replaces recalled SCIGN ASH700936E_C antenna) +-------+ / + \ <-- 0.1280 L2 | + | <-- 0.1100 L1 +-----------------+-------------+------------------+ <-- 0.1006 TCR | | | | | | | | +-+--------------------------------------------------+-+ <-- 0.0376 +-------------------+-------------+--------------------+ <-- 0.0346 BCR | | | | +------x------+ <-- 0.0000 BPA=ARP <-- 0.3890 --> ARP: Antenna Reference Point L1 : L1 Phase Center L2 : L2 Phase Center TCR: Top of Chokering BCR: Bottom of Chokering BPA: Bottom of Preamplifier