International GPS Service BREW Site Information Form See Instructions at: ftp://igscb.jpl.nasa.gov/pub/station/general/sitelog_instr.txt 0. Form Prepared by (full name) : David Maggert Date Prepared : 2008-07-02 Report Type : update If Update: Previous Site Log : brew_20071214.log Modified/Added Sections : 12, 13 1. Site Identification of the GNSS Monument Site Name : Brewster VLBA Four Character ID : BREW Monument Inscription : BREW IERS DOMES Number : 40473M001 CDP Number : (A4) Monument Description : STEEL MAST Height of the Monument : 1.5 m Monument Foundation : CONCRETE BLOCK Foundation Depth : 4 m Marker Description : SCIGN Mount Date Installed : 2001-11-09 Geologic Characteristic : SAND Bedrock Type : (IGNEOUS/METAMORPHIC/SEDIMENTARY) Bedrock Condition : (FRESH/JOINTED/WEATHERED) Fracture Spacing : (1-10 cm/10-50 cm/50-200 cm/over 200 cm) Fault zones nearby : (YES/NO/Name of the zone) Distance/activity : (multiple lines) 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 : WA Country : USA Tectonic Plate : North America Approximate Position (ITRF) X coordinate (m) : -2112007.1404 Y coordinate (m) : -3705351.8421 Z coordinate (m) : 4726827.1606 Latitude (N is +) : +480753.4865 Longitude (E is +) : -1194057.4807 Elevation (m,ellips.) : 238.6273 Additional Information : (multiple lines) 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 : (CCYY-MM-DDThh:mmZ) Temperature Stabiliz. : none Additional Information : UNAVCO ID 12703 3.x Receiver Type : (A20, from rcvr_ant.tab; see instructions) Satellite System : (GPS/GLONASS/GPS+GLONASS) Serial Number : (A5) 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 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 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 : (CCYY-MM-DDThh:mmZ) 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.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 : (SLR/VLBI/LOCAL CONTROL/FOOTPRINT/etc) 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) : (mm) Survey method : (GPS CAMPAIGN/TRILATERATION/TRIANGULATION/etc) Date Measured : 2001-11-08 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) : dy (m) : dz (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 : 2001-11-08/2002-04-25 Notes : (multiple lines) 6.2 Standard Type : H-MASER Input Frequency : 5 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 : (if external) Effective Dates : 2005-02-12/2005-02-15 Notes : New receiver installed. 6.4 Standard Type : H-MASER Input Frequency : 5 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.x Standard Type : 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 : (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 : 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 : Accuracy : (mbar) 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 : 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 : (hPa) 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 : 9. Local Ongoing Conditions Possibly Affecting Computed Position 9.1.x Radio Interferences : (TV/CELL PHONE ANTENNA/RADAR/etc) Observed Degredations : (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/BUILDLINGS/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 : National Radio Astronomy Observatory Preferred Abbreviation : NRAO Mailing Address : (multiple lines) Primary Contact Contact Name : Bob Sanderson Telephone (primary) : 509-689-3731 Telephone (secondary) : Fax : E-mail : bsanders@nrao.edu Secondary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Additional Information : (multiple lines) 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@ls.unavco.org, andreatta@unavco.org Additional Information : Victoria Andreatta (303.381.7458) 13. More Information Primary Data Center : JPL (ODC-Operational Data Center) Secondary Data Center : CDDIS (GDC-Global Data Center) URL for More Information : Hardcopy on File Site Map : Y Site Diagram : Y Horizon Mask : Y Monument Description : Y Site Pictures : Y Additional Information : (multiple lines) 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