LTWN Site Information Form (site log) International GNSS Service See Instructions at: ftp://igs.org/pub/station/general/sitelog_instr.txt 0. Form Prepared by (full name) : Mike Craymer Date Prepared : 2020-10-27 Report Type : UPDATE If Update: Previous Site Log : ltwn_20170616.log Modified/Added Sections : 4.1, 4.2, 11, 13 1. Site Identification of the GNSS Monument Site Name : LAWRENCETOWN NSACS Four Character ID : LTWN Monument Inscription : 250002 (labelled) IERS DOMES Number : CDP Number : Monument Description : STEEL MAST Height of the Monument : 2.50 (m) Monument Foundation : STRUCTURAL STEEL Foundation Depth : 0.00 (m) Marker Description : 5/8 Date Installed : 2013-03-28T00:00Z Geologic Characteristic : GRAVEL/SAND Bedrock Type : Bedrock Condition : Fracture Spacing : Fault zones nearby : Distance/activity : Additional Information : 2013-06-06 (Jason Bond, SNSMR) : The GPS reference mark is a 5/8" threaded : bolt. : The threaded bolt is attached : to the top of a two legged stainless steel : mast with horizontal cross member. The : steel mast (2.5 m) is attached to the : exterior brick wall of the building. The : structural steel is attached to a concrete : foundation. The geological characteristics : are : not known for the site. : 2014-02-21 (Jason Bond, SNSMR) : Changed reference mark description above to : the threaded bolt at the top of the mast, : instead of top of SECO mount). : It is located 0.0771 m below SECO thread : bolt. : 2014-07-31 (Jason Bond, SNS) : added monument inscription information : 2015-01-23 (Jason Bond, SNS) : NRCan #: NS50002 2. Site Location Information City or Town : LAWRENCETOWN State or Province : NS Country : CANADA Tectonic Plate : North American Approximate Position (ITRF) X coordinate (m) : 1900992.24 Y coordinate (m) : -4108106.48 Z coordinate (m) : 4478319.38 Latitude (N is +) : +445306.30 Longitude (E is +) : -0651004.98 Elevation (m,ellips.) : 14.60 Additional Information : 2013-06-06 (Jason Bond, SNSMR) : LTWN is a continuously tracking GNSS site of : the NSACS network. : Nova Scotia Community College (NSCC) : Centre of Geographic Sciences (COGS) : 50 Elliott Road, Lawrencetown, NS : The antenna mast is attached to the exterior : of the library on the roof. : The receiver is located in the utility room : on the main level by the library. : 2014-02-21 (Jason Bond, SNSMR) : Added address information above 3. GNSS Receiver Information 3.1 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO+GAL+BDS+QZSS+SBAS Serial Number : 5302K56620 Firmware Version : 4.62 Elevation Cutoff Setting : 0 Date Installed : 2013-03-28T00:00Z Date Removed : 2013-12-30T14:00Z Temperature Stabiliz. : Additional Information : 3.2 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO+GAL+BDS+QZSS+SBAS Serial Number : 5302K56620 Firmware Version : 4.81 Elevation Cutoff Setting : 0 Date Installed : 2013-12-30T14:00Z Date Removed : 2015-01-23T06:00Z Temperature Stabiliz. : Additional Information : 2013-12-30 (DJB) : Remote Firmware Update by Doug Powell, Cansel : 2014-11-12 (DJB) : S/N Added 3.3 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO+GAL+BDS+QZSS+SBAS Serial Number : 5302K56620 Firmware Version : 4.93 Elevation Cutoff Setting : 0 Date Installed : 2015-01-23T06:00Z Date Removed : 2015-06-30T12:04Z Temperature Stabiliz. : Additional Information : 2015-01-23 (DJB) : Remote Firmware Update by Doug Powell, Cansel 3.4 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO+GAL+BDS+QZSS+SBAS Serial Number : 5302K56620 Firmware Version : 5.01 Elevation Cutoff Setting : 0 Date Installed : 2015-06-30T12:12Z Date Removed : 2017-04-28T15:40Z Temperature Stabiliz. : Additional Information : 3.5 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO+GAL+BDS+QZSS+SBAS Serial Number : 5302K56620 Firmware Version : 5.22 Elevation Cutoff Setting : 0 Date Installed : 2017-04-28T15:44Z 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 : Date Installed : (CCYY-MM-DDThh:mmZ) Date Removed : (CCYY-MM-DDThh:mmZ) Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : 4. GNSS Antenna Information 4.1 Antenna Type : TRM59900.00 NONE Serial Number : 5247360672 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 000.0771 Marker->ARP North Ecc(m) : 000.0000 Marker->ARP East Ecc(m) : 000.0000 Alignment from True N : 0.0 Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : TRIMBLE LMR400 Antenna Cable Length : 30.00 (m) Date Installed : 2013-03-28T00:00Z Date Removed : 2020-10-07T15:34Z Additional Information : 2014-02-21 (DJB) : Revised Up Ecc. to be 0.0771 : 2014-11-12 (DJB) : Added "NONE" to antenna type : 2020-10-07 (MRC): : Poor L2 tracking since 2020-09-18 4.2 Antenna Type : TRM115000.00 NONE Serial Number : 1430693903 Antenna Reference Point : BAM Marker->ARP Up Ecc. (m) : 0.0771 Marker->ARP North Ecc(m) : 0.000 Marker->ARP East Ecc(m) : 0.000 Alignment from True N : 0 Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : Trimble LMR400 Antenna Cable Length : 30(m) Date Installed : 2020-10-07T15:38Z 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 : 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 : 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) : dy (m) : dz (m) : Accuracy (mm) : Survey method : (GPS CAMPAIGN/TRILATERATION/TRIANGULATION/etc) Date Measured : (CCYY-MM-DDThh:mmZ) Additional Information : 6. Frequency Standard 6.1 Standard Type : INTERNAL Input Frequency : Effective Dates : 2013-03-28 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 : 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 : 8. Meteorological Instrumentation 8.1.x Humidity Sensor Model : Manufacturer : Serial Number : Data Sampling Interval : (sec) Accuracy (% rel h) : (% 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 : 8.2.x Pressure Sensor Model : Manufacturer : Serial Number : Data Sampling Interval : (sec) Accuracy : (hPa) Aspiration : Height Diff to Ant : (CCYY-MM-DD) (m) Calibration date : (CCYY-MM-DD/CCYY-MM-DD) Effective Dates : Notes : 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 : 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 : 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 : Service Nova Scotia & Internal Services Preferred Abbreviation : SNS-IS Mailing Address : 5161 George St, Halifax, NS Primary Contact Contact Name : Maciej Bazanowski Telephone (primary) : +1-902-222-8763 Telephone (secondary) : +1-902-424-4166 Fax : E-mail : maciej.bazanowski@novascotia.ca Secondary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Additional Information : 12. Responsible Agency (if different from 11.) Agency : (multiple lines) Preferred Abbreviation : (A10) 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 : NRCan, CGS Secondary Data Center : Service Nova Scotia URL for More Information : Hardcopy on File Site Map : Site Diagram : Horizon Mask : Monument Description : Site Pictures : Additional Information : Antenna Graphics with Dimensions TRM59900.00 ----- / \ | | +-------------------------------------------------+ <-- 0.1791 TCR | | | | | | | | +-+-------------------------------------------------+-+ <-- 0.1152 +-------------------+-------------+-------------------+ <-- 0.1121 BCR <-- | 0.3810 | --> =| | RXC=NRP +======| |======+ <-- 0.0771 BPA=ARP | | | SECO Mount | | | -------------------+======| |======+------------------- <-- 0.0000 MRP | Stainless Steel Plate | ------------------------------------------------------- | L | | L | | E | | E | | G | | G | ARP: Antenna Reference Point MRP: Monument Reference Point TCR: Top of Chokering BCR: Bottom of Chokering BPA: Bottom of Preamplifier NRP: North Reference Point RXC: receiver connector (connect antenna to external receiver) TRM115000.00 / --------------------------------------------- \ + + \ --------------------------------------------- / <-- \ 0.3396 / --> Notches =\ / RXC=NRP +======| |======+ <-- 0.0771 BAM=ARP | | | SECO Mount | | | -------------------+======| |======+------------------- <-- 0.0000 MRP | Stainless Steel Plate | ------------------------------------------------------- | L | | L | | E | | E | | G | | G | ARP: Antenna Reference Point MRP: Monument Reference Point NRP: North Reference Point RXC: receiver connector (connect antenna to external receiver)