BRUX00BEL 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)  : GNSSatROB (gnss@oma.be)
     Date Prepared            : 2023-01-24
     Report Type              : UPDATE
     If Update:
      Previous Site Log       : brux00bel_20221018.log
      Modified/Added Sections : 6.14, 6.15, 6.16


1.   Site Identification of the GNSS Monument

     Site Name                : Brussels
     Four Character ID        : BRUX
     Monument Inscription     : 
     IERS DOMES Number        : 13101M010
     CDP Number               : (A4)
     Monument Description     : STEEL MAST
       Height of the Monument : 8 m
       Monument Foundation    : CONCRETE BLOCK
       Foundation Depth       : 3 m
     Marker Description       : CENTER OF HOLE IN STEEL PLATE
     Date Installed           : 2006-07-07
     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                  : Belgium
     Tectonic Plate           : EURASIAN
     Approximate Position (ITRF)
       X coordinate (m)       : 4027881.628
       Y coordinate (m)       : 306998.537
       Z coordinate (m)       : 4919498.984
       Latitude (N is +)      : +504753.03
       Longitude (E is +)     : +0042130.83
       Elevation (m,ellips.)  : 158.3
     Additional Information   : (multiple lines)


3.   GNSS Receiver Information

3.1  Receiver Type            : SEPT POLARX2
     Satellite System         : GPS
     Serial Number            : 1436
     Firmware Version         : 2.6.2
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2006-07-07
     Date Removed             : 2008-02-14T09:00Z
     Temperature Stabiliz.    : (deg C) +/- (deg C)
     Additional Information   : hardware replacement of receiver
                              : with SN 1128, same receiver, but
                              : different serial number (now 1436)

3.2  Receiver Type            : ASHTECH Z-XII3T
     Satellite System         : GPS
     Serial Number            : RT820015201
     Firmware Version         : 1L01-1D04
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2008-02-15T08:00Z
     Date Removed             : 2010-06-28T13:55Z
     Temperature Stabiliz.    : (deg C) +/- (deg C)
     Additional Information   : (multiple lines)

3.3  Receiver Type            : SEPT POLARX3ETR
     Satellite System         : GPS+GLO
     Serial Number            : 2001060
     Firmware Version         : 1.4.0
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2010-06-28T13:55Z
     Date Removed             : 2012-01-31T13:00Z
     Temperature Stabiliz.    : 18.0 +/- 0.2
     Additional Information   : (multiple lines)

3.4  Receiver Type            : SEPT POLARX4TR
     Satellite System         : GPS+GLO+GAL
     Serial Number            : 3001376
     Firmware Version         : 2.3.3
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2012-01-31T14:00Z
     Date Removed             : 2012-03-05T14:00Z
     Temperature Stabiliz.    : 18.0 +/- 0.2
     Additional Information   : The receiver delay 1PPS in to 1PPS out was
                              : measured to be 145 ns.

3.5  Receiver Type            : SEPT POLARX4TR
     Satellite System         : GPS+GLO+GAL
     Serial Number            : 3001376
     Firmware Version         : 2.3-tst120216r34012
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2012-03-05T16:00Z
     Date Removed             : 2012-09-24T11:00Z
     Temperature Stabiliz.    : 18.0 +/- 0.2
     Additional Information   : The receiver delay 1PPS in to 1PPS out was
                              : measured to be 142.8 ns.

3.6  Receiver Type            : SEPT POLARX4TR
     Satellite System         : GPS+GLO+GAL
     Serial Number            : 3001376
     Firmware Version         : 2.3.4
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2012-09-24T11:45Z
     Date Removed             : 2013-02-04T12:40Z
     Temperature Stabiliz.    : 18.0 +/- 0.2
     Additional Information   : The receiver delay 1PPS in to 1PPS out was
                              : measured to be 142.8 ns.

3.7  Receiver Type            : SEPT POLARX4TR
     Satellite System         : GPS+GLO+GAL+BDS
     Serial Number            : 3001376
     Firmware Version         : 2.3.4
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2013-02-04T13:55Z
     Date Removed             : 2014-03-17T10:10Z
     Temperature Stabiliz.    : 18.0 +/- 0.2
     Additional Information   : The receiver delay 1PPS in to 1PPS out is
                              : supposed to be unchanged (142.8 ns).

3.8  Receiver Type            : SEPT POLARX4TR
     Satellite System         : GPS+GLO+GAL+BDS
     Serial Number            : 3001376
     Firmware Version         : 2.5.2
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2014-03-17T10:40Z
     Date Removed             : 2015-09-07T14:45Z
     Temperature Stabiliz.    : 18.0 +/- 0.2
     Additional Information   : The receiver delay 1PPS in to 1PPS out was
                              : remeasured and found to be unchanged (142.8 ns).

3.9  Receiver Type            : SEPT POLARX4TR
     Satellite System         : GPS+GLO+GAL+BDS
     Serial Number            : 3001376
     Firmware Version         : 2.9.0
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2015-09-07T14:50Z
     Date Removed             : 2016-10-24T09:00Z
     Temperature Stabiliz.    : 18.0 +/- 0.2
     Additional Information   : (multiple lines)

3.10 Receiver Type            : SEPT POLARX4TR
     Satellite System         : GPS+GLO+GAL+BDS
     Serial Number            : 3001376
     Firmware Version         : 2.9.5
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2016-10-24T09:00Z
     Date Removed             : 2017-01-03T12:15Z
     Temperature Stabiliz.    : 18.0 +/- 0.2
     Additional Information   : (multiple lines)

3.11 Receiver Type            : SEPT POLARX4TR
     Satellite System         : GPS+GLO+GAL+BDS
     Serial Number            : 3001376
     Firmware Version         : 2.9.6
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2017-01-03T12:15Z
     Date Removed             : 2017-03-20
     Temperature Stabiliz.    : 18.0 +/- 0.2
     Additional Information   : (multiple lines)

3.12 Receiver Type            : SEPT POLARX4TR
     Satellite System         : GPS+GLO+GAL+BDS
     Serial Number            : 3001376
     Firmware Version         : 2.9.6
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2017-03-20
     Date Removed             : 2018-11-12T08:30Z
     Temperature Stabiliz.    : 20.1 +/- 0.2
     Additional Information   : (multiple lines)

3.13 Receiver Type            : SEPT POLARX4TR
     Satellite System         : GPS+GLO+GAL+BDS
     Serial Number            : 3001376
     Firmware Version         : 2.9.6-extref3
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2018-11-12T08:31Z
     Date Removed             : 2020-02-25T13:15Z
     Temperature Stabiliz.    : 20.1 +/- 0.2
     Additional Information   : (multiple lines)

3.14 Receiver Type            : SEPT POLARX5TR
     Satellite System         : GPS+GLO+GAL+BDS+QZSS+IRNSS+SBAS
     Serial Number            : 3057609
     Firmware Version         : 5.3.2
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2020-02-25T13:30Z
     Date Removed             : 2021-02-04T09:30Z
     Temperature Stabiliz.    : 20.1 +/- 0.2
     Additional Information   : (multiple lines)

3.15 Receiver Type            : SEPT POLARX5TR
     Satellite System         : GPS+GLO+GAL+BDS+QZSS+IRNSS+SBAS
     Serial Number            : 3057609
     Firmware Version         : 5.4.0
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2021-02-04T09:40Z
     Date Removed             : 2022-10-10T11:00Z
     Temperature Stabiliz.    : 20.1 +/- 0.2
     Additional Information   : (multiple lines)

3.16 Receiver Type            : SEPT POLARX5TR
     Satellite System         : GPS+GLO+GAL+BDS+QZSS+IRNSS+SBAS
     Serial Number            : 3057609
     Firmware Version         : 5.5.0
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2022-10-10T12:10Z
     Date Removed             : 2022-10-11T08:00Z
     Temperature Stabiliz.    : 20.1 +/- 0.2
     Additional Information   : (multiple lines)

3.17 Receiver Type            : SEPT POLARX5TR
     Satellite System         : GPS+GLO+GAL+BDS+QZSS+IRNSS+SBAS
     Serial Number            : 3057609
     Firmware Version         : 5.5.0
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2022-10-11T08:00Z
     Date Removed             : CCYY-MM-DDThh:mmZ
     Temperature Stabiliz.    : 21.8 +/- 0.2
     Additional Information   : (multiple lines)

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             : ASH701945E_M    NONE
     Serial Number            : CR620023301
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  :   0.1266
     Marker->ARP North Ecc(m) :   0.0010
     Marker->ARP East Ecc(m)  :   0.0000
     Alignment from True N    : 0 deg
     Antenna Radome Type      : NONE
     Radome Serial Number     : 
     Antenna Cable Type       : ANDREW heliax LDF2-50A
     Antenna Cable Length     : 60 m
     Date Installed           : 2006-07-07
     Date Removed             : 2008-03-19T08:45Z
     Additional Information   : (multiple lines)

4.2  Antenna Type             : ASH701945C_M    NONE
     Serial Number            : CR620002301
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  :   0.1266
     Marker->ARP North Ecc(m) :   0.0010
     Marker->ARP East Ecc(m)  :   0.0000
     Alignment from True N    : 0 deg
     Antenna Radome Type      : NONE
     Radome Serial Number     : 
     Antenna Cable Type       : ANDREW heliax LDF2-50A
     Antenna Cable Length     : 60 m
     Date Installed           : 2008-03-19T09:00Z
     Date Removed             : 2008-06-17T09:00Z
     Additional Information   : (multiple lines)

4.3  Antenna Type             : ASH701945C_M    NONE
     Serial Number            : CR620002301
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  :   0.1286
     Marker->ARP North Ecc(m) :   0.0010
     Marker->ARP East Ecc(m)  :   0.0000
     Alignment from True N    : 0 deg
     Antenna Radome Type      : NONE
     Radome Serial Number     : 
     Antenna Cable Type       : ANDREW heliax LDF2-50A
     Antenna Cable Length     : 60 m
     Date Installed           : 2008-06-17T09:00Z
     Date Removed             : 2008-09-02T13:00Z
     Additional Information   : Testing of ECCOSORB ANW-79 around antenna in
                              : order to obtain low reflectivity. Adaptation
                              : antenna height by + 2 mm due to a mounting
                              : plate which holds the ECCOSORB material under
                              : the antenna.

4.4  Antenna Type             : ASH701945C_M    NONE
     Serial Number            : CR620002301
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  :   0.1266
     Marker->ARP North Ecc(m) :   0.0010
     Marker->ARP East Ecc(m)  :   0.0000
     Alignment from True N    : 0 deg
     Antenna Radome Type      : NONE
     Radome Serial Number     : 
     Antenna Cable Type       : ANDREW heliax LDF2-50A
     Antenna Cable Length     : 60 m
     Date Installed           : 2008-09-02T13:00Z
     Date Removed             : 2008-09-22T09:00Z
     Additional Information   : Testing without plate and ECOSORB

4.5  Antenna Type             : TRM55971.00     NONE
     Serial Number            : 30765568
     Antenna Reference Point  : BAM
     Marker->ARP Up Ecc. (m)  :   0.1266
     Marker->ARP North Ecc(m) :   0.0010
     Marker->ARP East Ecc(m)  :   0.0000
     Alignment from True N    : 0 deg
     Antenna Radome Type      : NONE
     Radome Serial Number     : 
     Antenna Cable Type       : ANDREW heliax LDF2-50A
     Antenna Cable Length     : 60 m
     Date Installed           : 2008-09-22T09:00Z
     Date Removed             : 2008-10-02T09:30Z
     Additional Information   : Testing new antenna (Antartica)

4.6  Antenna Type             : TRM55971.00     TZGD
     Serial Number            : 30765568
     Antenna Reference Point  : BAM
     Marker->ARP Up Ecc. (m)  :   0.1266
     Marker->ARP North Ecc(m) :   0.0010
     Marker->ARP East Ecc(m)  :   0.0000
     Alignment from True N    : 0 deg
     Antenna Radome Type      : TZGD
     Radome Serial Number     : 
     Antenna Cable Type       : ANDREW heliax LDF2-50A
     Antenna Cable Length     : 60 m
     Date Installed           : 2008-10-02T09:30Z
     Date Removed             : 2008-10-20T06:30Z
     Additional Information   : Testing new antenna (Antartica)

4.7  Antenna Type             : ASH701945C_M    NONE
     Serial Number            : CR620002301
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  :   0.1266
     Marker->ARP North Ecc(m) :   0.0010
     Marker->ARP East Ecc(m)  :   0.0000
     Alignment from True N    : 0 deg
     Antenna Radome Type      : NONE
     Radome Serial Number     : 
     Antenna Cable Type       : ANDREW heliax LDF2-50A
     Antenna Cable Length     : 60 m
     Date Installed           : 2008-10-20T06:30Z
     Date Removed             : 2011-03-07T08:30Z
     Additional Information   : (multiple lines)

4.8  Antenna Type             : JAVRINGANT_DM   NONE
     Serial Number            : 00464
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  :   0.4689
     Marker->ARP North Ecc(m) :   0.0010
     Marker->ARP East Ecc(m)  :   0.0000
     Alignment from True N    : 0 deg
     Antenna Radome Type      : NONE
     Radome Serial Number     : 
     Antenna Cable Type       : ANDREW heliax LDF2-50A
     Antenna Cable Length     : 60 m
     Date Installed           : 2011-03-07T12:00Z
     Date Removed             : 2018-02-01T08:15Z
     Additional Information   : To shield the antenna from reflections on the
                              : dome below it, a 0.8x0.8 m^2 metal shield was
                              : installed with Eccosorb ANW-77 on top. The
                              : spacing between the ARP and the top of the
                              : Eccosorb ANW-77 is 17.8 cm.
                              : On 2015-12-09, the Eccosorb was replaced by a
                              : new more resistant version.

4.9  Antenna Type             : JAVRINGANT_DM   NONE
     Serial Number            : 00464
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  :   0.4689
     Marker->ARP North Ecc(m) :   0.0010
     Marker->ARP East Ecc(m)  :   0.0000
     Alignment from True N    : 0 deg
     Antenna Radome Type      : NONE
     Radome Serial Number     : 
     Antenna Cable Type       : ANDREW heliax LDF2-50A
     Antenna Cable Length     : 60 m
     Date Installed           : 2018-02-01T08:15Z
     Date Removed             : 2021-04-20T07:35Z
     Additional Information   : To shield the antenna from reflections on the
                              : dome below it, a 0.8x0.8 m^2 metal shield was
                              : installed with Eccosorb ANW-77 on top. The
                              : spacing between the ARP and the top of the
                              : Eccosorb ANW-77 is 17.8 cm.
                              : On 2015-12-09, the Eccosorb was replaced by a
                              : new more resistant version.
                              : Surge protection device, dly: L2 553, L1 525 ps.

4.10 Antenna Type             : JAVRINGANT_DM   SCIS
     Serial Number            : 00464
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  :   0.4689
     Marker->ARP North Ecc(m) :   0.0010
     Marker->ARP East Ecc(m)  :   0.0000
     Alignment from True N    : 0 deg
     Antenna Radome Type      : SCIS
     Radome Serial Number     : 0612
     Antenna Cable Type       : ANDREW heliax LDF2-50A
     Antenna Cable Length     : 60 m
     Date Installed           : 2021-04-20T08:33Z
     Date Removed             : CCYY-MM-DDThh:mmZ
     Additional Information   : (multiple lines)

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         : BRUS
     Tied Marker Usage        : IGS and EPN station
     Tied Marker CDP Number   : (A4)
     Tied Marker DOMES Number : 13101M004
     Differential Components from GNSS Marker to the tied monument (ITRS)
       dx (m)                 : 12.161 m
       dy (m)                 : 47.330 m
       dz (m)                 : -23.744 m
     Accuracy (mm)            : 1 mm
     Survey method            : GPS CAMPAIGN
     Date Measured            : 2011-07-07
     Additional Information   : L1 analysis covering period
                              : 2011-05-16 to 2011-07-22.
                              : An L3 analysis over the same period
                              : provides (12.161;47.329;-23.745).
                              : GPS data analysis was done using igs08.atx
                              : calibrations for BRUS and indiv.calib.
                              : for BRUX (from University of Bonn and TU
                              : Darmstadt).

5.2  Tied Marker Name         : BRUS
     Tied Marker Usage        : IGS and EPN station
     Tied Marker CDP Number   : (A4)
     Tied Marker DOMES Number : 13101M004
     Differential Components from GNSS Marker to the tied monument (ITRS)
       dx (m)                 : 12.162 m
       dy (m)                 : 47.331 m
       dz (m)                 : -23.745 m
     Accuracy (mm)            : 1 mm
     Survey method            : GPS CAMPAIGN
     Date Measured            : 2011-11-02
     Additional Information   : L1 analysis covering period
                              : 2011-007-23 to 2012-02-12.
                              : An L3 analysis over the same period
                              : provides (12.166;47.334;-23.748).
                              : Differences between 5.2 and 5.3 are caused
                              : by an unexplained coordinate jump at BRUS
                              : at 2011-07-22.
                              : GPS data analysis was done using igs08.atx
                              : calibrations for BRUS and indiv.calib.
                              : for BRUX (from University of Bonn and TU
                              : Darmstadt).

5.3  Tied Marker Name         : BRUS
     Tied Marker Usage        : IGS and EPN station
     Tied Marker CDP Number   : (A4)
     Tied Marker DOMES Number : 13101M004
     Differential Components from GNSS Marker to the tied monument (ITRS)
       dx (m)                 : 12.164 m
       dy (m)                 : 47.324 m
       dz (m)                 : -23.739 m
     Accuracy (mm)            : 3 mm
     Survey method            : TRIANGULATION
     Date Measured            : 2012-03-23
     Additional Information   : accuracy = 1 sigma

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            : EXTERNAL H-MASER
       Input Frequency        : 10 MHz
       Effective Dates        : 2006-07-07/2010-12-21
       Notes                  : (multiple lines)

6.2  Standard Type            : INTERNAL
       Input Frequency        : (if external)
       Effective Dates        : 2010-12-22/2011-03-23
       Notes                  : (multiple lines)

6.3  Standard Type            : EXTERNAL CESIUM
       Input Frequency        : 10 MHz
       Effective Dates        : 2011-03-23/2011-12-19
       Notes                  : At 12h UTC, 13h local time, on 2011-03-23 the
                              : receiver was stopped, recabeled with an external
                              : reference (namely UTC(ROB), derived from a
                              : HP5071A), and restarted.

6.4  Standard Type            : EXTERNAL CH1-75A MASER
       Input Frequency        : 10 MHz
       Effective Dates        : 2011-12-19/2012-02-27
       Notes                  : The 5MHz output of the CH1-75A (maser3) passes a
                              : Minicircuits FD-2+ frequency doubler 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.

6.5  Standard Type            : EXTERNAL CESIUM
       Input Frequency        : 10 MHz
       Effective Dates        : 2012-02-27/2012-03-01
       Notes                  : The 10MHz output of the Symmetricom 5071A (ces1)
                              : 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.

6.6  Standard Type            : EXTERNAL CH1-75A MASER
       Input Frequency        : 10 MHz
       Effective Dates        : 2012-03-01/2013-07-09
       Notes                  : The 5MHz output of the CH1-75A (maser3) passes a
                              : Minicircuits FD-2+ frequency doubler 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 5071A CESIUM
       Input Frequency        : 10 MHz
       Effective Dates        : 2013-07-09/2015-06-03
       Notes                  : The 10MHz of the Symmetricom 5071A (cesium2) 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.

6.8  Standard Type            : EXTERNAL CH1-75A MASER
       Input Frequency        : 10 MHz
       Effective Dates        : 2015-06-03/2016-11-07
       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.

6.9  Standard Type            : EXTERNAL 5071A CESIUM
       Input Frequency        : 10 MHz
       Effective Dates        : 2016-11-07/2016-11-17
       Notes                  : The 5MHz output of the CESIUM 5071A (ces3)
                              : 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.

6.10 Standard Type            : EXTERNAL CH1-75A MASER
       Input Frequency        : 10 MHz
       Effective Dates        : 2016-11-17/2018-02-01
       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.

6.11 Standard Type            : EXTERNAL CH1-75A MASER
       Input Frequency        : 10 MHz
       Effective Dates        : 2018-02-01/2022-02-15
       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.
                              : REFDLY = 157.5 ns.

6.12 Standard Type            : EXTERNAL IMASER 3000
       Input Frequency        : 10 MHz
       Effective Dates        : 2022-02-15/2022-08-16
       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.

6.13 Standard Type            : EXTERNAL CESIUM
       Input Frequency        : 10 MHz
       Effective Dates        : 2022-08-16/2022-10-10
       Notes                  : The 10MHz output of an HP5071A is used as input
                              : to a SpectraTime femtoStepper for the steering
                              : on UTC. The output of this phase stepper (equal
                              : to UTC(ORB)) is used as an input to the
                              : receiver.

6.14 Standard Type            : EXTERNAL IMASER 3000
       Input Frequency        : 10 MHz
       Effective Dates        : 2022-10-10/2023-01-23
       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.

6.15 Standard Type            : EXTERNAL CESIUM
       Input Frequency        : 10 MHz
       Effective Dates        : 2023-01-23/2023-01-23
       Notes                  : The 10MHz output of an HP5071A is used as input
                              : to a SpectraTime femtoStepper for the steering
                              : on UTC. The output of this phase stepper (equal
                              : to UTC(ORB)) is used as an input to the
                              : receiver.

6.16 Standard Type            : EXTERNAL IMASER 3000
       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.

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     : CRYOGENIC GRAVIMETER
       Status                 : PERMANENT
       Effective Dates        : 1993-10-20/2000-08-21
       Notes                  : (multiple lines)

7.2  Instrumentation Type     : SEISMOMETER
       Status                 : PERMANENT
       Effective Dates        : 1993-10-20/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.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                   : Royal Observatory of Belgium
     Preferred Abbreviation   : ROB
     Mailing Address          : Av. Circulaire 3
                              : 1180 Brussels
                              : Belgium
     Primary Contact
       Contact Name           : GNSSatROB
       Telephone (primary)    : 
       Telephone (secondary)  : 
       Fax                    : 
       E-mail                 : gnss@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    : BKG
     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                     -->

ARP: Antenna Reference Point
L1 : L1 Phase Center                   L2 : L2 Phase Center
TCR: Top of Chokering                  BCR: Bottom of Chokering
BPA: Bottom of Preamplifier

All dimensions are in meters.