HNPT00USA Site Information Form (site log)
     International GNSS Service
     See Instructions at:
       https://ftp.igs.org/pub/station/general/sitelog_instr.txt

0.   Form

     Prepared by (full name)  : Francine Coloma
     Date Prepared            : 2021-01-27
     Report Type              : UPDATE
     If Update:
      Previous Site Log       : hnpt_20190314.log
      Modified/Added Sections : 3.19,3.20


1.   Site Identification of the GNSS Monument

     Site Name                : Horn Point Enviromental Lab.
     Four Character ID        : HNPT
     Monument Inscription     : 
     IERS DOMES Number        : 49913S001
     CDP Number               : 
     Monument Description     : STEEL MAST
       Height of the Monument : 4.3 m
       Monument Foundation    : 
       Foundation Depth       : 
     Marker Description       : 
     Date Installed           : 1995-12-13T00:00Z
     Geologic Characteristic  : 
       Bedrock Type           : 
       Bedrock Condition      : 
       Fracture Spacing       : 
       Fault zones nearby     : 
         Distance/activity    : 
     Additional Information   : 


2.   Site Location Information

     City or Town             : Cambridge
     State or Province        : Maryland
     Country                  : United States
     Tectonic Plate           : NORTH AMERICAN
     Approximate Position (ITRF)
       X coordinate (m)       : 1196626.343
       Y coordinate (m)       : -4846358.500
       Z coordinate (m)       : 3956723.115
       Latitude (N is +)      : +383519.74
       Longitude (E is +)     : -0760749.34
       Elevation (m,ellips.)  : -28.0
     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            : ROGUE SNR-12
     Satellite System         : GPS
     Serial Number            : T210
     Firmware Version         : 3.2.32.1
     Elevation Cutoff Setting : 
     Date Installed           : 1995-12-13T00:00Z
     Date Removed             : 1997-05-15T00:00Z
     Temperature Stabiliz.    : 
     Additional Information   : 

3.2  Receiver Type            : ROGUE SNR-8000
     Satellite System         : GPS
     Serial Number            : T371
     Firmware Version         : 3.2.32.1
     Elevation Cutoff Setting : 
     Date Installed           : 1997-05-16T00:00Z
     Date Removed             : 1999-04-29T14:19Z
     Temperature Stabiliz.    : 
     Additional Information   : 

3.3  Receiver Type            : ROGUE SNR-8000
     Satellite System         : GPS
     Serial Number            : T371
     Firmware Version         : 3.2.32.8
     Elevation Cutoff Setting : 
     Date Installed           : 1999-04-30T00:00Z
     Date Removed             : 1999-08-09T14:50Z
     Temperature Stabiliz.    : 
     Additional Information   : firmware upgrade

3.4  Receiver Type            : ROGUE SNR-8000
     Satellite System         : GPS
     Serial Number            : T371
     Firmware Version         : 3.2.32.9
     Elevation Cutoff Setting : 
     Date Installed           : 1999-08-09T15:03Z
     Date Removed             : 2000-05-10T23:36Z
     Temperature Stabiliz.    : 
     Additional Information   : station hit by lightning

3.5  Receiver Type            : ROGUE SNR-8000
     Satellite System         : GPS
     Serial Number            : T148
     Firmware Version         : 3.2.32.9
     Elevation Cutoff Setting : 
     Date Installed           : 2000-05-22T13:22Z
     Date Removed             : 2000-08-09T00:00Z
     Temperature Stabiliz.    : 
     Additional Information   : Upgraded firmware

3.6  Receiver Type            : ROGUE SNR-8000
     Satellite System         : GPS
     Serial Number            : T148
     Firmware Version         : 3.2.32.11
     Elevation Cutoff Setting : 
     Date Installed           : 2000-08-09T13:37Z
     Date Removed             : 2001-03-28T18:20Z
     Temperature Stabiliz.    : 
     Additional Information   : 

3.7  Receiver Type            : TRIMBLE 4000SSI
     Satellite System         : GPS
     Serial Number            : 3912A25531
     Firmware Version         : 7.29
     Elevation Cutoff Setting : 
     Date Installed           : 2001-04-25T00:00Z
     Date Removed             : 2001-07-17T13:37Z
     Temperature Stabiliz.    : 
     Additional Information   : 

3.8  Receiver Type            : ROGUE SNR-8000
     Satellite System         : GPS
     Serial Number            : T366
     Firmware Version         : 3.2.32.11
     Elevation Cutoff Setting : 
     Date Installed           : 2001-08-03T13:34Z
     Date Removed             : 2004-02-11T00:00Z
     Temperature Stabiliz.    : 
     Additional Information   : 

3.9  Receiver Type            : LEICA RS500
     Satellite System         : GPS
     Serial Number            : 80155
     Firmware Version         : 4.20
     Elevation Cutoff Setting : 
     Date Installed           : 2004-02-11T00:00Z
     Date Removed             : 2006-08-01T00:00Z
     Temperature Stabiliz.    : 
     Additional Information   : 

3.10 Receiver Type            : LEICA RS500
     Satellite System         : GPS
     Serial Number            : 80155
     Firmware Version         : 4.20
     Elevation Cutoff Setting : 5 deg
     Date Installed           : 2006-08-01T00:00Z
     Date Removed             : 2007-06-14T00:00Z
     Temperature Stabiliz.    : 
     Additional Information   : Receiver replace.

3.11 Receiver Type            : LEICA GRX1200GGPRO
     Satellite System         : GPS+GLO
     Serial Number            : 351085
     Firmware Version         : 5.10
     Elevation Cutoff Setting : 5 deg
     Date Installed           : 2007-06-14T00:00Z
     Date Removed             : 2007-11-01T00:00Z
     Temperature Stabiliz.    : 
     Additional Information   : Receiver firmware replaced.

3.12 Receiver Type            : LEICA GRX1200GGPRO
     Satellite System         : GPS+GLO
     Serial Number            : 351085
     Firmware Version         : 5.60
     Elevation Cutoff Setting : 5 deg
     Date Installed           : 2007-11-01T00:00Z
     Date Removed             : 2009-07-30T00:00Z
     Temperature Stabiliz.    : 
     Additional Information   : Firmware upgrade.

3.13 Receiver Type            : LEICA GRX1200GGPRO
     Satellite System         : GPS+GLO
     Serial Number            : 351085
     Firmware Version         : 7.53
     Elevation Cutoff Setting : 5 deg
     Date Installed           : 2009-07-30T00:00Z
     Date Removed             : 2010-03-22T17:58Z
     Temperature Stabiliz.    : 
     Additional Information   : (multiple Lines)

3.14 Receiver Type            : LEICA GRX1200GGPRO
     Satellite System         : GPS+GLO
     Serial Number            : 351085
     Firmware Version         : 7.8
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2010-03-22T17:58Z
     Date Removed             : 2010-05-04T19:10Z
     Temperature Stabiliz.    : 
     Additional Information   : (multiple Lines)

3.15 Receiver Type            : LEICA GRX1200GGPRO
     Satellite System         : GPS+GLO
     Serial Number            : 351085
     Firmware Version         : 7.80 / IME 3.019
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2010-05-04T19:10Z
     Date Removed             : 2011-05-13T19:47Z
     Temperature Stabiliz.    : 
     Additional Information   : (multiple Lines)

3.16 Receiver Type            : LEICA GRX1200GGPRO
     Satellite System         : GPS+GLO
     Serial Number            : 351085
     Firmware Version         : 8.10/IME 3.019
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2011-05-13T19:47Z
     Date Removed             : 2013-04-19T16:24Z
     Temperature Stabiliz.    : 
     Additional Information   : (multiple Lines)

3.17 Receiver Type            : LEICA GRX1200GGPRO
     Satellite System         : GPS+GLO
     Serial Number            : 351085
     Firmware Version         : 8.20/IME 3.019
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2013-04-19T16:24Z
     Date Removed             : 2014-08-06T16:05Z
     Temperature Stabiliz.    : 
     Additional Information   : (multiple Lines)

3.18 Receiver Type            : LEICA GRX1200GGPRO
     Satellite System         : GPS+GLO
     Serial Number            : 351085
     Firmware Version         : 8.20/IME3.055
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2014-08-06T16:05Z
     Date Removed             : 2019-03-14T00:00Z
     Temperature Stabiliz.    : 
     Additional Information   : Firmware update 

3.19 Receiver Type            : LEICA GRX1200GGPRO
     Satellite System         : GPS+GLO
     Serial Number            : 351085
     Firmware Version         : 9.20/IME3.823
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2019-03-14T00:00Z
     Date Removed             : 2021-01-27T17:00Z
     Temperature Stabiliz.    : 
     Additional Information   : Receiver replaced 

3.20 Receiver Type            : LEICA GR50
     Satellite System         : GPS+GLO+GAL
     Serial Number            : 1870590
     Firmware Version         : 4.30/7.402
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2021-01-27T17:57Z
     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            : 196
     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    : 
     Antenna Radome Type      : NONE
     Radome Serial Number     : 
     Antenna Cable Type       : 
     Antenna Cable Length     : 
     Date Installed           : 1995-12-13T00:00Z
     Date Removed             : 1999-01-24T23:59Z
     Additional Information   : 2009-03-18 Set Marker Ecc North and East
                              :   from F8.4 to 0.0000

4.2  Antenna Type             : AOAD/M_TA_NGS   NONE
     Serial Number            : 398
     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    : 
     Antenna Radome Type      : NONE
     Radome Serial Number     : 
     Antenna Cable Type       : 
     Antenna Cable Length     : 
     Date Installed           : 1999-01-26T00:00Z
     Date Removed             : 2000-05-10T23:36Z
     Additional Information   : Dorne Margolin with chokering retrofit
                              : with Ashtech LNA
                              : 2009-03-18 Set Marker Ecc North and East
                              :   from F8.4 to 0.0000

4.3  Antenna Type             : ASH700936E      SNOW
     Serial Number            : CR519993605
     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    : 
     Antenna Radome Type      : SNOW
     Radome Serial Number     : 
     Antenna Cable Type       : 
     Antenna Cable Length     : 
     Date Installed           : 2000-05-22T13:22Z
     Date Removed             : 2007-06-14T00:00Z
     Additional Information   : Antenna removed.
                              : 2009-03-18 Set Marker Ecc North and East
                              :   from F8.4 to 0.0000

4.4  Antenna Type             : LEIAX1202GG     NONE
     Serial Number            : 06300058
     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    : 
     Antenna Radome Type      : NONE
     Radome Serial Number     : 
     Antenna Cable Type       : 
     Antenna Cable Length     : 
     Date Installed           : 2007-06-14T00:00Z
     Date Removed             : CCYY-MM-DDThh:mmZ
     Additional Information   : 2021-01-27 JG finds antenna pointing 
                              :  30 deg from True North

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        : 1995-12-13/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                   : University of Maryland Center for Environmental
                              : Studies Horn Point Laboratory
     Preferred Abbreviation   : UMCES
     Mailing Address          : 2020 Horns Point Road
                              : Cambridge, MD  21613
     Primary Contact
       Contact Name           : Jason Beveridge
       Telephone (primary)    : 410.221.8374
       Telephone (secondary)  : 
       Fax                    : 
       E-mail                 : jbeveridge@umces.edu
     Secondary Contact
       Contact Name           : 
       Telephone (primary)    : 
       Telephone (secondary)  : 
       Fax                    : 
       E-mail                 : 
     Additional Information   : 


12.  Responsible Agency (if different from 11.)

     Agency                   : NOAA-National Geodetic Survey
     Preferred Abbreviation   : NOAA-NGS
     Mailing Address          : 1315 East-West Hwy.
                              : Silver Spring, MD 20910, USA
     Primary Contact
       Contact Name           : Don Haw
       Telephone (primary)    : 240-533-9676
       Telephone (secondary)  : 
       Fax                    : 
       E-mail                 : ngs.corscollector@noaa.gov
     Secondary Contact
       Contact Name           : Fran Coloma
       Telephone (primary)    : 303-497-3692
       Telephone (secondary)  : 
       Fax                    : 
       E-mail                 : ngs.corscollector@noaa.gov
     Additional Information   : 

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               : 
       Site Diagram           : (Y)
       Horizon Mask           : (Y)
       Monument Description   : (Y)
       Site Pictures          : (Y)
     Additional Information   : 
     Antenna Graphics with Dimensions
       ftp://www.igs.org/pub/station/general/antenna.gra