TXMH Site Information Form
TXDOT Continuously Operating Reference Station
See Instructions at:
ftp://www.igs.org/pub/station/general/sitelog_instr.txt
0. Form
Prepared by (full name) : Don Haw
Date Prepared : 2020-04-30
Report Type : UPDATE
If Update:
Previous Site Log : txmh_20190927.log
Modified/Added Sections : 3.11-13
1. Site Identification of the GNSS Monument
Site Name : Monahans
Four Character ID : TXMH
Monument Inscription :
IERS DOMES Number : (A9)
CDP Number : (A4)
Monument Description : STEEL MAST [2.44 m]
Height of the Monument : 3.66 m
Monument Foundation : Concrete pillar [1.22 m above ground]
Foundation Depth : 4.00 m
Marker Description : Threaded brass level device insert
Date Installed : 2010-05-25T00:00Z
Geologic Characteristic : (BEDROCK/CLAY/CONGLOMERATE/GRAVEL/SAND/etc)
Bedrock Type : (IGNEOUS/METAMORPHIC/SEDIMENTARY)
Bedrock Condition : (FRESH/JOINTED/WEATHERED)
Fracture Spacing : (1-10 cm/11-50 cm/51-200 cm/over 200 cm)
Fault zones nearby : No
Distance/activity : (multiple lines)
Additional Information : UNAVCO square leveling device is utilized
2. Site Location Information
City or Town : Monahans
State or Province : Texas
Country : United States
Tectonic Plate : North American
Approximate Position (ITRF)
X coordinate (m) : -1214047.499
Y coordinate (m) : -5303357.764
Z coordinate (m) : 3319148.185
Latitude (N is +) : +313327.84
Longitude (E is +) : -1025338.43
Elevation (m,ellips.) : 773.4
Additional Information : ARP IGS08 POSITION (EPOCH 2005.00)
: Computed in Aug 2011 using data through gpswk
: 1631.
3. GNSS Receiver Information
3.1 Receiver Type : TRIMBLE NETRS
Satellite System : GPS
Serial Number : 4610206099
Firmware Version : 1.25
Elevation Cutoff Setting : 5 deg
Date Installed : 2010-05-25
Date Removed : 2010-09-27
Temperature Stabiliz. : (none or tolerance in degrees C)
Additional Information : (multiple lines)
3.2 Receiver Type : TRIMBLE NETRS
Satellite System : GPS
Serial Number : 4542260376
Firmware Version : 1.25
Elevation Cutoff Setting : 5 deg
Date Installed : 2010-09-27
Date Removed : 2012-07-20
Temperature Stabiliz. : (none or tolerance in degrees C)
Additional Information : (multiple lines)
3.3 Receiver Type : TRIMBLE NETRS
Satellite System : GPS
Serial Number : 4542260376
Firmware Version : 1.31
Elevation Cutoff Setting : 5 deg
Date Installed : 2012-07-20
Date Removed : 2012-12-19
Temperature Stabiliz. : (none or tolerance in degrees C)
Additional Information : Firmware updated
3.4 Receiver Type : TRIMBLE NETRS
Satellite System : GPS
Serial Number : 4542260376
Firmware Version : 1.3-2
Elevation Cutoff Setting : 5 deg
Date Installed : 2012-12-19
Date Removed : 2013-11-14T18:20Z
Temperature Stabiliz. : (none or tolerance in degrees C)
Additional Information : Receiver change
3.5 Receiver Type : TRIMBLE NETR9
Satellite System : GPS+GLO
Serial Number : 5245K53205
Firmware Version : 4.81
Elevation Cutoff Setting : 5 deg
Date Installed : 2013-11-14T19:40Z
Date Removed : 2014-05-21T20:00Z
Temperature Stabiliz. : (none or tolerance in degrees C)
Additional Information : (multiple lines)
3.6 Receiver Type : TRIMBLE NETR9
Satellite System : GPS+GLO
Serial Number : 5245K53205
Firmware Version : 4.85
Elevation Cutoff Setting : 5 deg
Date Installed : 2014-05-21T20:00Z
Date Removed : 2017-01-04T15:54Z
Temperature Stabiliz. : (none or tolerance in degrees C)
Additional Information : (multiple lines)
3.7 Receiver Type : TRIMBLE NETR9
Satellite System : GPS+GLO
Serial Number : 5245K53205
Firmware Version : 5.20
Elevation Cutoff Setting : 5 deg
Date Installed : 2017-01-04T15:54Z
Date Removed : 2017-08-15T16:00Z
Temperature Stabiliz. : (none or tolerance in degrees C)
Additional Information : Receiver change
3.8 Receiver Type : TRIMBLE NETR9
Satellite System : GPS+GLO
Serial Number : 5503R50049
Firmware Version : 5.22
Elevation Cutoff Setting : 5 deg
Date Installed : 2017-08-15T17:00Z
Date Removed : 2017-09-04T23:31Z
Temperature Stabiliz. : (none or tolerance in degrees C)
Additional Information : Firmware update
3.9 Receiver Type : TRIMBLE NETR9
Satellite System : GPS+GLO
Serial Number : 5503R50049
Firmware Version : 5.30
Elevation Cutoff Setting : 5 deg
Date Installed : 2017-09-04T23:31Z
Date Removed : 2019-02-09
Temperature Stabiliz. : (none or tolerance in degrees C)
Additional Information : (multiple lines)
3.10 Receiver Type : TRIMBLE NETR9
Satellite System : GPS+GLO
Serial Number : 5503R50049
Firmware Version : 5.37
Elevation Cutoff Setting : 5 deg
Date Installed : 2019-02-09
Date Removed : 2019-08-24T00:19Z
Temperature Stabiliz. : (none or tolerance in degrees C)
Additional Information : new firmware
3.11 Receiver Type : TRIMBLE NETR9
Satellite System : GPS+GLO
Serial Number : 5823R50427
Firmware Version : 5.37
Elevation Cutoff Setting : 5 deg
Date Installed : 2019-09-17T15:30Z
Date Removed : 2019-10-19
Temperature Stabiliz. : (none or tolerance in degrees C)
Additional Information : new receiver
3.12 Receiver Type : TRIMBLE NETR9
Satellite System : GPS+GLO
Serial Number : 5823R50427
Firmware Version : 5.43
Elevation Cutoff Setting : 5 deg
Date Installed : 2019-10-19
Date Removed : 2020-01-17T03:25Z
Temperature Stabiliz. : (none or tolerance in degrees C)
Additional Information : new firmware
3.13 Receiver Type : TRIMBLE NETR9
Satellite System : GPS+GLO
Serial Number : 5823R50427
Firmware Version : 5.44
Elevation Cutoff Setting : 5 deg
Date Installed : 2020-01-17T03:25Z
Date Removed : (CCYY-MM-DDThh:mmZ)
Temperature Stabiliz. : (none or tolerance in degrees C)
Additional Information : new firmware
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 : TRM41249.00 NONE
Serial Number : 60165714
Antenna Reference Point : BAM
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 : Times Microwave Systems LMR 600
Antenna Cable Length : 91.4 m
Date Installed : 2010-05-25
Date Removed : 2013-11-14T16:10Z
Additional Information : Antenna change
4.2 Antenna Type : TRM57971.00 NONE
Serial Number : 5000115022
Antenna Reference Point : BAM
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 : Times Microwave Systems LMR 600
Antenna Cable Length : 91.4 m
Date Installed : 2013-11-14T16:10Z
Date Removed : 2019-08-24T00:19Z
Additional Information : (multiple lines)
4.3 Antenna Type : TRM57971.00 NONE
Serial Number : 5000117313
Antenna Reference Point : BAM
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 : Times Microwave Systems LMR 600
Antenna Cable Length : 91.4 m
Date Installed : 2019-09-27T14:07Z
Date Removed : (CCYY-MM-DDThh:mmZ)
Additional Information : new antenna
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 : 2010-05-25/CCYY-MM-DD
Notes : (multiple lines)
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 : (GPS/GLONASS/DORIS/PRARE/SLR/VLBI/TIME/etc)
Status : (PERMANENT/MOBILE)
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 : (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)
8.1.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 : (sec)
Accuracy : (hPa)
Height Diff to Ant : (m)
Calibration date : (CCYY-MM-DD)
Effective Dates : (CCYY-MM-DD/CCYY-MM-DD)
Notes : (multiple lines)
8.2.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 : (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)
8.3.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)
8.4.1 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 : (multiple lines)
9. Local Ongoing Conditions Possibly Affecting Computed Position
9.1.1 Radio Interference : (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)
9.1.x Radio Interference : (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 : (METAL ROOF/DOME/VLBI ANTENNA/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)
9.3.1 Signal Obstructions : (TREES/BUILDLINGS/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
10.1 Date : (CCYY-MM-DD/CCYY-MM-DD)
Event : (TREE CLEARING/CONSTRUCTION/etc)
10.x Date : (CCYY-MM-DD/CCYY-MM-DD)
Event : (TREE CLEARING/CONSTRUCTION/etc)
11. On-Site, Point of Contact Agency Information
Agency : Texas Department of Transportation
Preferred Abbreviation : TXDOT
Mailing Address : 125 E. 11th Street Austin Texas, 78701
Primary Contact
Contact Name : Darrell Thames
Telephone (primary) : 512-302-2049
Telephone (secondary) :
Fax : 512-465-7668
E-mail : darrell.thames@txdot.gov
Secondary Contact
Contact Name : Michael Cloud
Telephone (primary) :
Telephone (secondary) : 512-374-5059
Fax : 512-465-7668
E-mail : michael.cloud@txdot.gov
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 : ftp://geodesy.noaa.gov/cors
Secondary Data Center : ftp://alt.ngs.noaa.gov/cors
URL for More Information : http://geodesy.noaa.gov/CORS
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
ftp://www.igs.org/pub/station/general/antenna.gra