WLSN00USA 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) : David Maggert Date Prepared : 2022-03-15 Report Type : UPDATE If Update: Previous Site Log : wlsn_20210825.log Modified/Added Sections : 3.17, 3.18, 4.3, 4.4 1. Site Identification of the GNSS Monument Site Name : Mt. Wilson Four Character ID : WLSN Monument Inscription : 4028-s IERS DOMES Number : 40400M101 CDP Number : Monument Description : rock-pin/metal-tripod Height of the Monument : Monument Foundation : Foundation Depth : Marker Description : Date Installed : 1994-07-18T00:00Z Geologic Characteristic : 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 : Mt. Wilson State or Province : California Country : United States of America (the) Tectonic Plate : NORTH AMERICAN Approximate Position (ITRF) X coordinate (m) : -2483640.9494 Y coordinate (m) : -4660072.8425 Z coordinate (m) : 3568172.1952 Latitude (N is +) : +341334.04 Longitude (E is +) : -1180321.29 Elevation (m,ellips.) : 1705.26 Additional Information : Located at Mt. Wilson Observatory : Los Angeles County. 3. GNSS Receiver Information 3.1 Receiver Type : ROGUE SNR-8100 Satellite System : GPS Serial Number : R-137 Firmware Version : 2.8.32.1 Elevation Cutoff Setting : Date Installed : 1994-07-15T00:00Z Date Removed : 1994-11-04T00:00Z Temperature Stabiliz. : Additional Information : 3.2 Receiver Type : ROGUE SNR-8100 Satellite System : GPS Serial Number : R-137 Firmware Version : 3.0 1994/10/10 17:01:54 Elevation Cutoff Setting : Date Installed : 1994-11-04T00:00Z Date Removed : 1995-03-07T00:00Z Temperature Stabiliz. : Additional Information : 3.3 Receiver Type : ROGUE SNR-8100 Satellite System : GPS Serial Number : R-137 Firmware Version : 3.2 link 03/02/95 Elevation Cutoff Setting : Date Installed : 1995-03-07T00:00Z Date Removed : 1995-03-19T00:00Z Temperature Stabiliz. : Additional Information : 3.4 Receiver Type : ROGUE SNR-8100 Satellite System : GPS Serial Number : R-141 Firmware Version : 3.2 link 03/09/95 Elevation Cutoff Setting : Date Installed : 1995-03-19T00:00Z Date Removed : 1999-01-06T00:00Z Temperature Stabiliz. : Additional Information : 3.5 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : LP03089 Firmware Version : CB00 Elevation Cutoff Setting : Date Installed : 1999-01-06T00:00Z Date Removed : 1999-07-12T00:00Z Temperature Stabiliz. : Additional Information : 3.6 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : LP03089 Firmware Version : CC00 Elevation Cutoff Setting : Date Installed : 1999-07-12T00:00Z Date Removed : 2000-07-20T10:43Z Temperature Stabiliz. : Additional Information : GPS week rollover-compliant 3.7 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : LP03089 Firmware Version : CC00 Elevation Cutoff Setting : 10 deg Date Installed : 2000-07-20T10:43Z Date Removed : 2001-05-21T16:33Z Temperature Stabiliz. : Additional Information : GPS week rollover-compliant 3.8 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : LP03089 Firmware Version : CC00 Elevation Cutoff Setting : 0 deg Date Installed : 2001-05-21T16:33Z Date Removed : 2011-04-29T20:51Z Temperature Stabiliz. : Additional Information : GPS week rollover-compliant 3.9 Receiver Type : TPS NET-G3A Satellite System : GPS Serial Number : 618-00995 Firmware Version : 3.5 May,06,2010 Elevation Cutoff Setting : 5 deg Date Installed : 2011-04-29T20:51Z Date Removed : 2012-05-01T21:45Z Temperature Stabiliz. : Additional Information : 3.10 Receiver Type : TPS NET-G3A Satellite System : GPS Serial Number : 618-00995 Firmware Version : 3.6 Feb,28,2012 p1 Elevation Cutoff Setting : 5 deg Date Installed : 2012-05-01T21:55Z Date Removed : 2013-01-24T00:02Z Temperature Stabiliz. : Additional Information : firmware upgrade 3.11 Receiver Type : TPS NET-G3A Satellite System : GPS Serial Number : 618-01069 Firmware Version : 3.6 Feb,28,2012 p1 Elevation Cutoff Setting : 5 deg Date Installed : 2013-01-24T00:08Z Date Removed : 2013-06-05T17:42Z Temperature Stabiliz. : Additional Information : 3.12 Receiver Type : TPS NET-G3A Satellite System : GPS Serial Number : 618-01069 Firmware Version : 4.0 Dec,21,2012 p1 Elevation Cutoff Setting : 5 deg Date Installed : 2013-06-05T18:35Z Date Removed : 2015-11-18T22:51Z Temperature Stabiliz. : Additional Information : 3.13 Receiver Type : TPS NET-G3A Satellite System : GPS+GLO Serial Number : 618-01069 Firmware Version : 4.5 Dec,29,2014 Elevation Cutoff Setting : 5 deg Date Installed : 2015-11-18T22:56Z Date Removed : 2016-02-10T01:35Z Temperature Stabiliz. : Additional Information : 3.14 Receiver Type : TPS NET-G3A Satellite System : GPS Serial Number : 618-01069 Firmware Version : 4.5 Dec,29,2014 Elevation Cutoff Setting : 5 deg Date Installed : 2016-02-10T01:35Z Date Removed : 2016-05-18T19:52Z Temperature Stabiliz. : Additional Information : GLONASS disabled 3.15 Receiver Type : TPS NET-G3A Satellite System : GPS Serial Number : 618-01069 Firmware Version : 4.7 Oct,23,2015 Elevation Cutoff Setting : 5 deg Date Installed : 2016-05-18T20:54Z Date Removed : 2017-02-10T19:12Z Temperature Stabiliz. : Additional Information : 3.16 Receiver Type : TPS NET-G3A Satellite System : GPS Serial Number : 618-01069 Firmware Version : 4.7 Oct,18,2016 p2 Elevation Cutoff Setting : 5 deg Date Installed : 2017-02-10T19:34Z Date Removed : 2019-03-27T21:31Z Temperature Stabiliz. : Additional Information : 3.17 Receiver Type : TPS NET-G3A Satellite System : GPS+GLO Serial Number : 618-01069 Firmware Version : 4.7 Feb,21,2019 p10 Elevation Cutoff Setting : 5 deg Date Installed : 2019-03-27T21:45Z Date Removed : 2021-11-04T22:30Z Temperature Stabiliz. : Additional Information : 3.18 Receiver Type : SEPT POLARX5 Satellite System : GPS+GLO+GAL+SBAS Serial Number : 3052264 Firmware Version : 5.4.0 Elevation Cutoff Setting : 0 deg Date Installed : 2021-11-05T00:00Z 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 : AOAD/M_T NONE Serial Number : 416 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0610 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : Antenna Cable Length : Date Installed : 1994-07-15T00:00Z Date Removed : 2011-04-29T20:51Z Additional Information : 4.2 Antenna Type : TPSCR.G3 NONE Serial Number : 383-1875 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0740 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 : Antenna Cable Length : Date Installed : 2011-04-29T20:51Z Date Removed : 2011-06-07T16:39Z Additional Information : New antenna did not slide onto mount properly : causing a shift of 13mm higher than before. : The antenna was also unable to be leveled. 4.3 Antenna Type : TPSCR.G3 NONE Serial Number : 383-1875 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0610 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 : Antenna Cable Length : Date Installed : 2011-06-07T17:34Z Date Removed : 2021-11-04T22:30Z Additional Information : Top base plate machined to fit the Topcon : antenna so that antenna height is the same as : the original antenna. 4.4 Antenna Type : TWIVC6150 NONE Serial Number : VC6150L1910310012 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0614 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 : Antenna Cable Length : Date Installed : 2021-11-05T00:00Z Date Removed : CCYY-MM-DDThh:mmZ Additional Information : 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 : 1994-07-18/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 Preferred Abbreviation : USGS Mailing Address : USGS Pasadena Field Office : 525 South Wilson Avenue : Pasadena, CA. 91107 Primary Contact Contact Name : SCGN Operators Telephone (primary) : Telephone (secondary) : Fax : E-mail : scgn-operators@usgs.gov Secondary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Additional Information : 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 : 13. More Information Primary Data Center : CDDIS Secondary Data Center : IGN URL for More Information : http://www.unavco.org Hardcopy on File Site Map : Site Diagram : Horizon Mask : Monument Description : Site Pictures : Additional Information : Antenna Graphics with Dimensions TPSCR.G3 +-------+ / \ | | +-----------------+-------------+-----------------+ <-- 0.1015 TCR | | | | | | | | +-+-------------------------------------------------+-+ +-------------------+-------------+-------------------+ <-- 0.0345 BCR | | | | +------x------+ <-- 0.0000 BPA=ARP <-- 0.2380 --> <-- 0.3800 -->