RTBS00BEL Site Information Form (site log v2.0) International GNSS Service See Instructions at: https://files.igs.org/pub/station/general/sitelog_instr_v2.0.txt 0. Form Prepared by (full name) : gnss_time (time_lab@oma.be) Date Prepared : 2024-09-04 Report Type : UPDATE If Update: Previous Site Log : rtbs00bel_20230713.log Modified/Added Sections : 6.6, 6.7 1. Site Identification of the GNSS Monument Site Name : Brussels Nine Character ID : RTBS00BEL Monument Inscription : IERS DOMES Number : 13101M007 CDP Number : (A4) Monument Description : STEEL MAST Height of the Monument : 8 m Monument Foundation : CONCRETE BLOCK Foundation Depth : 3 m Marker Description : BRASS NAIL Date Installed : 2011-11-30T10:30Z Geologic Characteristic : SAND Bedrock Type : SEDIMENTARY Bedrock Condition : FRESH Fracture Spacing : 0 cm Fault zones nearby : NO Distance/activity : (multiple lines) Additional Information : (multiple lines) 2. Site Location Information City or Town : Brussels State or Province : Brabant Country or Region : BEL Tectonic Plate : EURASIAN Approximate Position (ITRF) X coordinate (m) : 4027862.480 Y coordinate (m) : 307028.340 Z coordinate (m) : 4919508.370 Latitude (N is +) : +504753.64 Longitude (E is +) : +0042132.42 Elevation (m,ellips.) : 154.9 Additional Information : (multiple lines) 3. GNSS Receiver Information 3.1 Receiver Type : SEPT POLARX4 Satellite System : GPS+GLO Serial Number : 3001149 Firmware Version : 2.3 Elevation Cutoff Setting : 0 deg Date Installed : 2011-11-30T13:00Z Date Removed : 2012-01-16T15:00Z Temperature Stabiliz. : 18.0 +/- 0.1 Additional Information : (multiple lines) 3.2 Receiver Type : JAVAD TRE_G3T DELTA Satellite System : GPS+GLO Serial Number : 00850 Firmware Version : 3.3.3 Elevation Cutoff Setting : 0 deg Date Installed : 2012-01-16T15:30Z Date Removed : 2012-11-15T17:51Z Temperature Stabiliz. : 18.0 +/- 0.1 Additional Information : This receiver is owned and run by JPL/NASA. 3.3 Receiver Type : JAVAD TRE_G3T DELTA Satellite System : GPS+GLO Serial Number : 00850 Firmware Version : 3.4.6 Elevation Cutoff Setting : 0 deg Date Installed : 2012-11-15T17:51Z Date Removed : 2013-07-16T16:25Z Temperature Stabiliz. : 18.0 +/- 0.1 Additional Information : This receiver is owned and run by JPL/NASA. 3.4 Receiver Type : JAVAD TRE_G3T DELTA Satellite System : GPS+GLO Serial Number : 00850 Firmware Version : 3.5.1 Elevation Cutoff Setting : 0 deg Date Installed : 2013-07-16T16:25Z Date Removed : 2013-09-27T21:40Z Temperature Stabiliz. : 18.0 +/- 0.1 Additional Information : This receiver is owned and run by JPL/NASA. : Besides the firmware, also settings changed: : L1 center frequency offset changed to 1573 MHz : instead of nominal 1575 MHz, to allow for some : functional BeiDou tracking. 3.5 Receiver Type : JAVAD TRE_G3T DELTA Satellite System : GPS+GLO+BDS Serial Number : 00850 Firmware Version : 3.5.2 Elevation Cutoff Setting : 0 deg Date Installed : 2013-09-27T21:40Z Date Removed : 2018-12-11T13:00Z Temperature Stabiliz. : 18.0 +/- 0.1 Additional Information : This receiver is owned and run by JPL/NASA. : The firmware was updated from 3.5.1 to 3.5.2 : and L1 BeiDou observables have been enabled. 3.6 Receiver Type : SEPT POLARX5TR Satellite System : GPS+GLO+GAL+BDS+IRNSS Serial Number : 4701179 Firmware Version : 5.2.0 Elevation Cutoff Setting : 0 deg Date Installed : 2019-03-12T12:00Z Date Removed : CCYY-MM-DDThh:mmZ Temperature Stabiliz. : 20.1 +/- 0.2 Additional Information : This receiver is owned and run by JPL/NASA. 3.x Receiver Type : (A20, from rcvr_ant.tab; see instructions) Satellite System : (GPS+GLO+GAL+BDS+QZSS+IRNSS+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 : TRM59800.00 NONE Serial Number : 5120354193 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0000 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 : RGB233 Antenna Cable Length : 60 m Date Installed : 2011-11-30T15:00Z Date Removed : 2012-01-16T15:00Z Additional Information : cable length not measured but estimated 4.2 Antenna Type : JAVRINGANT_DM NONE Serial Number : 00573 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0000 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 : RG 233 Antenna Cable Length : 60 m Date Installed : 2012-01-16T15:30Z Date Removed : 2013-02-04T14:25Z Additional Information : cable length not measured but estimated 4.3 Antenna Type : JAVRINGANT_DM NONE Serial Number : 00573 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0000 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 : RG-223 Antenna Cable Length : 60 m Date Installed : 2013-02-04T14:45Z Date Removed : 2013-05-07T12:45Z Additional Information : Cable length not measured but estimated. : No changes with previous block (4.2) but the : antenna had to be removed in order to access and : check the cable connector (which was oxidized). : Cable will be replaced. 4.4 Antenna Type : JAVRINGANT_DM NONE Serial Number : 00573 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0000 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 : LMR-400 Antenna Cable Length : 34 m Date Installed : 2013-05-07T13:15Z Date Removed : 2017-12-18T12:00Z Additional Information : Antenna is same as in previous (4.3) block. : Cable has been replaced and antenna connector : has been cleaned (hence antenna was removed from : mount and re-installed afterwards). : Cable length was measured with Anritsu S332E. 4.5 Antenna Type : JAVRINGANT_DM NONE Serial Number : 00573 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0000 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 : LMR-400 Antenna Cable Length : 34 m Date Installed : 2017-12-18T12:00Z Date Removed : CCYY-MM-DDThh:mmZ Additional Information : Installation of a surge protection device (SPD) : Extra 1m RG58 cable from SPD to receiver 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 : (if external) Effective Dates : 2011-11-30/2012-01-25 Notes : (multiple lines) 6.2 Standard Type : EXTERNAL H MASER CH1-75A Input Frequency : 5 MHz Effective Dates : 2012-01-25/2012-02-27 Notes : The 5 MHz output of the CH1-75A maser passes a : HP5087A distribution amplifier and 2 times a : 20dB attenuator. 6.3 Standard Type : INTERNAL Input Frequency : (if external) Effective Dates : 2012-02-27/2012-11-13 Notes : As the maser was switched of for repair, it no : longer could feed the receiver with 5MHz. : The maser was restarted on 2012-03-01 but due : to an issue with an attenuator, that was : replaced on 2012-11-13, the receiver was not : able to lock on the external reference provided. 6.4 Standard Type : EXTERNAL H MASER CH1-75A Input Frequency : 5 MHz Effective Dates : 2012-11-13/2013-12-11 Notes : The 5 MHz output of the CH1-75A maser passes a : HP5087A distribution amplifier and a 10dB and : 3dB attenuator. 6.5 Standard Type : INTERNAL Input Frequency : (if external) Effective Dates : 2013-12-11/2017-07-31 Notes : Due to an issue with the maser, the receiver is : again reconfigured to run on internal : oscillator. 6.6 Standard Type : EXTERNAL CH1-75A MASER Input Frequency : 10 MHz Effective Dates : 2017-07-31/2023-01-23 Notes : The 5MHz output of the CH1-75A (maser3) passes : an amplifier HP5087A and then is used as input : to a SpectraTime femtoStepper. The output of : this phase stepper (equal to UTC(ORB)) is used : as an input to the receiver. 6.7 Standard Type : EXTERNAL iMaser 3000 Maser Input Frequency : 10 MHz Effective Dates : 2023-01-23/CCYY-MM-DD Notes : The 10MHz output of the iMaser 3000 (maser4) is : used as input to a SpectraTime femtoStepper. The : output of : this phase stepper (equal to UTC(ORB)) is used : as an input to the receiver. : RefDLY: 69.9 ns 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) 9.2.1 Multipath Sources : antenna sits in between RTBR, RTBT (50cm space) Effective Dates : 2011-11-30/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 : Royal Observatory of Belgium Preferred Abbreviation : ROB Mailing Address : Avenue Circulaire 3 : 1180 Uccle : Belgium Primary Contact Contact Name : gnss_time Telephone (primary) : Telephone (secondary) : Fax : E-mail : time_lab@oma.be Secondary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Additional Information : (multiple lines) 12. Responsible Agency (if different from 11.) Agency : (multiple lines) Preferred Abbreviation : (A10) Mailing Address : (multiple lines) 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 : ROB Secondary Data Center : JPL URL for More Information : 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 : (multiple lines) Antenna Graphics with Dimensions JAVRINGANT_DM --------- / \ | | +-------------------------------------------------+ <-- 0.1015 TCR | | | | | | | | +-+-------------------------------------------------+-+ <-- 0.0379 +-------------------+-------------+-------------------+ <-- 0.0345 BCR | | | | +------x------+ <-- 0.0000 BPA=ARP <-- 0.3800 -->