SFER00ESP 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)  : ROA GNSS team (gnss@roa.es)
     Date Prepared            : 2023-09-19
     Report Type              : UPDATE
     If Update:
      Previous Site Log       : sfer00esp_20230914.log
      Modified/Added Sections : 3.16


1.   Site Identification of the GNSS Monument

     Site Name                : San Fernando
     Nine Character ID        : SFER00ESP
     Monument Inscription     : None
     IERS DOMES Number        : 13402M004
     CDP Number               : None
     Monument Description     : STEEL MAST
       Height of the Monument : 1.626 m
       Monument Foundation    : ROOF
       Foundation Depth       : (m)
     Marker Description       : (CHISELLED CROSS/DIVOT/BRASS NAIL/etc)
     Date Installed           : 1996-01-09
     Geologic Characteristic  : (BEDROCK/CLAY/CONGLOMERATE/GRAVEL/SAND/etc)
       Bedrock Type           : (IGNEOUS/METAMORPHIC/SEDIMENTARY)
       Bedrock Condition      : (FRESH/JOINTED/WEATHERED)
       Fracture Spacing       : (0 cm/1-10 cm/11-50 cm/51-200 cm/over 200 cm)
       Fault zones nearby     : (YES/NO/Name of the zone)
         Distance/activity    : (multiple lines)
     Additional Information   : At Real Instituto y Observatorio de la Armada


2.   Site Location Information

     City or Town             : San Fernando
     State or Province        : N/A
     Country or Region        : ESP
     Tectonic Plate           : EURASIAN
     Approximate Position (ITRF)
       X coordinate (m)       : 5105519.055
       Y coordinate (m)       : -555146.005
       Z coordinate (m)       : 3769803.246
       Latitude (N is +)      : +362751.64
       Longitude (E is +)     : -0061220.33
       Elevation (m,ellips.)  : 84.1
     Additional Information   : A SLR station at ROA.
                              : Near Cadiz


3.   GNSS Receiver Information

3.1  Receiver Type            : TRIMBLE 4000SSE
     Satellite System         : GPS
     Serial Number            : 3508A09886
     Firmware Version         : 6.12 / 2.12
     Elevation Cutoff Setting : 5 deg
     Date Installed           : 1995-12-18
     Date Removed             : 1998-06-02
     Temperature Stabiliz.    : (deg C) +/- (deg C)
     Additional Information   : (multiple lines)

3.2  Receiver Type            : TRIMBLE 4000SSI
     Satellite System         : GPS
     Serial Number            : 3817A22698
     Firmware Version         : 7.29 / 3.07
     Elevation Cutoff Setting : 10 deg
     Date Installed           : 1998-06-02
     Date Removed             : 2002-03-04
     Temperature Stabiliz.    : (deg C) +/- (deg C)
     Additional Information   : (multiple lines)

3.3  Receiver Type            : TRIMBLE 4000SSE
     Satellite System         : GPS
     Serial Number            : 3508A09886
     Firmware Version         : 7.29 / 3.07
     Elevation Cutoff Setting : 10 deg
     Date Installed           : 2002-03-05
     Date Removed             : 2003-02-18
     Temperature Stabiliz.    : (deg C) +/- (deg C)
     Additional Information   : (multiple lines)

3.4  Receiver Type            : TRIMBLE 4000SSE
     Satellite System         : GPS
     Serial Number            : 3508A09886
     Firmware Version         : Nav 7.29 Sig 3.07
     Elevation Cutoff Setting : 5 deg
     Date Installed           : 2003-02-18
     Date Removed             : 2005-11-28
     Temperature Stabiliz.    : (deg C) +/- (deg C)
     Additional Information   : (multiple lines)

3.5  Receiver Type            : TRIMBLE NETRS
     Satellite System         : GPS
     Serial Number            : 4351230287
     Firmware Version         : 1.1-1
     Elevation Cutoff Setting : 5 deg
     Date Installed           : 2005-11-28
     Date Removed             : 2008-02-04
     Temperature Stabiliz.    : (deg C) +/- (deg C)
     Additional Information   : (multiple lines)

3.6  Receiver Type            : TRIMBLE NETRS
     Satellite System         : GPS
     Serial Number            : 4351230287
     Firmware Version         : 1.1-5
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2008-02-04
     Date Removed             : 2008-05-20T09:35Z
     Temperature Stabiliz.    : (deg C) +/- (deg C)
     Additional Information   : (multiple lines)

3.7  Receiver Type            : TRIMBLE NETRS
     Satellite System         : GPS
     Serial Number            : 4724134757
     Firmware Version         : 1.20
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2008-05-20T09:40Z
     Date Removed             : 2011-06-28T10:48Z
     Temperature Stabiliz.    : (deg C) +/- (deg C)
     Additional Information   : (multiple lines)

3.8  Receiver Type            : TRIMBLE NETRS
     Satellite System         : GPS
     Serial Number            : 4724134757
     Firmware Version         : 1.3-1
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2011-06-28T10:48Z
     Date Removed             : 2014-01-30T10:50Z
     Temperature Stabiliz.    : (deg C) +/- (deg C)
     Additional Information   : (multiple lines)

3.9  Receiver Type            : LEICA GR25
     Satellite System         : GPS+GLO+GAL+SBAS
     Serial Number            : 1830523
     Firmware Version         : 3.03/6.214
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2014-01-30T11:40Z
     Date Removed             : 2015-05-26T07:44Z
     Temperature Stabiliz.    : (deg C) +/- (deg C)
     Additional Information   : (multiple lines)

3.10 Receiver Type            : LEICA GR25
     Satellite System         : GPS+GLO+GAL+SBAS
     Serial Number            : 1830523
     Firmware Version         : 3.11.1639/6.403
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2015-05-26T07:50Z
     Date Removed             : 2017-12-21T09:20Z
     Temperature Stabiliz.    : (deg C) +/- (deg C)
     Additional Information   : Firmware updated

3.11 Receiver Type            : LEICA GR25
     Satellite System         : GPS+GLO+GAL+SBAS
     Serial Number            : 1830523
     Firmware Version         : 4.11/6.523
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2017-12-21T09:20Z
     Date Removed             : 2018-06-20T10:14Z
     Temperature Stabiliz.    : (deg C) +/- (deg C)
     Additional Information   : Firmware update

3.12 Receiver Type            : LEICA GR25
     Satellite System         : GPS+GLO+GAL+SBAS
     Serial Number            : 1830523
     Firmware Version         : 4.20/6.524
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2018-06-20T14:15Z
     Date Removed             : 2020-06-11T08:30Z
     Temperature Stabiliz.    : (deg C) +/- (deg C)
     Additional Information   : Firmware update

3.13 Receiver Type            : LEICA GR25
     Satellite System         : GPS+GLO+GAL+SBAS
     Serial Number            : 1830523
     Firmware Version         : 4.20/6.713
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2020-06-11T08:30Z
     Date Removed             : 2020-06-17T06:30Z
     Temperature Stabiliz.    : (deg C) +/- (deg C)
     Additional Information   : Firmware update

3.14 Receiver Type            : LEICA GR25
     Satellite System         : GPS+GLO+GAL+SBAS
     Serial Number            : 1830523
     Firmware Version         : 4.31/6.713
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2020-06-17T06:30Z
     Date Removed             : 2023-02-15T09:00Z
     Temperature Stabiliz.    : (deg C) +/- (deg C)
     Additional Information   : Firmware update

3.15 Receiver Type            : LEICA GR30
     Satellite System         : GPS+GLO+GAL+BDS+SBAS
     Serial Number            : 1708304
     Firmware Version         : 4.60/7.811
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2023-02-15T10:00Z
     Date Removed             : 2023-09-07T09:00Z
     Temperature Stabiliz.    : (deg C) +/- (deg C)
     Additional Information   : Change of receiver

3.16 Receiver Type            : LEICA GR30
     Satellite System         : GPS+GLO+GAL+BDS+SBAS
     Serial Number            : 1708304
     Firmware Version         : 4.70/7.813
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2023-09-07T09:00Z
     Date Removed             : CCYY-MM-DDThh:mmZ
     Temperature Stabiliz.    : (deg C) +/- (deg C)
     Additional Information   : Firmware update

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             : TRM22020.00+GP  NONE
     Serial Number            : 0220012709
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  :   1.6260
     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       : TRIMBLE - RG59 BU
     Antenna Cable Length     : 10 m
     Date Installed           : 1995-12-18
     Date Removed             : 1997-12-31
     Additional Information   : (multiple lines)

4.2  Antenna Type             : TRM29659.00     NONE
     Serial Number            : 02200
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  :   1.6260
     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       : TRIMBLE - RG59 BU
     Antenna Cable Length     : 10 m
     Date Installed           : 1997-12-31
     Date Removed             : 1998-02-04
     Additional Information   : Installed for antena test purposes

4.3  Antenna Type             : TRM22020.00+GP  NONE
     Serial Number            : 0220012709
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  :   1.6260
     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       : TRIMBLE - RG59 BU
     Antenna Cable Length     : 10 m
     Date Installed           : 1998-02-04
     Date Removed             : 1998-06-02
     Additional Information   : (multiple lines)

4.4  Antenna Type             : TRM29659.00     NONE
     Serial Number            : 0220011735
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  :   1.6260
     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       : TRIMBLE - RG59 BU
     Antenna Cable Length     : 10 m
     Date Installed           : 1998-06-02
     Date Removed             : 2002-03-04
     Additional Information   : New denomination iaw the new rcvr_ant.tab.

4.5  Antenna Type             : TRM29659.00     NONE
     Serial Number            : 0220073543
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  :   1.6260
     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       : TRIMBLE - RG59 BU
     Antenna Cable Length     : 10 m
     Date Installed           : 2002-03-05
     Date Removed             : 2014-01-30T10:50Z
     Additional Information   : (multiple lines)

4.6  Antenna Type             : LEIAR20         NONE
     Serial Number            : 16330003
     Antenna Reference Point  : BAM
     Marker->ARP Up Ecc. (m)  :   1.6260
     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       : RG59 BU
     Antenna Cable Length     : 10 m
     Date Installed           : 2014-01-30T11:40Z
     Date Removed             : 2019-01-17T10:30Z
     Additional Information   : (multiple lines)

4.7  Antenna Type             : LEIAR25         NONE
     Serial Number            : 726380
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  :   1.6260
     Marker->ARP North Ecc(m) :   0.0000
     Marker->ARP East Ecc(m)  :   0.0000
     Alignment from True N    : -145 deg
     Antenna Radome Type      : NONE
     Radome Serial Number     : 
     Antenna Cable Type       : LMR400
     Antenna Cable Length     : 10 m
     Date Installed           : 2019-01-17T11:00Z
     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         : SLR
     Tied Marker Usage        : SLR
     Tied Marker CDP Number   : (A4)
     Tied Marker DOMES Number : 13402S007
     Differential Components from GNSS Marker to the tied monument (ITRS)
       dx (m)                 : -45.095 m
       dy (m)                 : 35.278 m
       dz (m)                 : 89.556 m
     Accuracy (mm)            : 
     Survey method            : GPS CAMPAIGN
     Date Measured            : 1996-01-05
     Additional Information   : (multiple lines)

5.2  Tied Marker Name         : Mark GPS Euref89
     Tied Marker Usage        : LOCAL CONTROL
     Tied Marker CDP Number   : (A4)
     Tied Marker DOMES Number : 13402M003
     Differential Components from GNSS Marker to the tied monument (ITRS)
       dx (m)                 : 11.207 m
       dy (m)                 : -0.787 m
       dz (m)                 : -22.289 m
     Accuracy (mm)            : 
     Survey method            : GPS CAMPAIGN
     Date Measured            : 1996-01-05
     Additional Information   : (multiple lines)

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 CESIUM
       Input Frequency        : 10 MHz
       Effective Dates        : 1995-12-18/2002-03-04
       Notes                  : (multiple lines)

6.2  Standard Type            : INTERNAL
       Input Frequency        : (if external)
       Effective Dates        : 2002-03-05/2002-03-14
       Notes                  : (multiple lines)

6.3  Standard Type            : EXTERNAL CESIUM
       Input Frequency        : 10 MHz
       Effective Dates        : 2002-03-15/2009-04-17
       Notes                  : (multiple lines)

6.4  Standard Type            : EXTERNAL H-MASER
       Input Frequency        : 10 MHz
       Effective Dates        : 2009-04-17/2011-06-09
       Notes                  : (multiple lines)

6.5  Standard Type            : INTERNAL
       Input Frequency        : (if external)
       Effective Dates        : 2011-06-09/2011-06-28
       Notes                  : (multiple lines)

6.6  Standard Type            : EXTERNAL H-MASER
       Input Frequency        : 10 MHz
       Effective Dates        : 2011-06-28/2014-01-30
       Notes                  : (multiple lines)

6.7  Standard Type            : INTERNAL
       Input Frequency        : (if external)
       Effective Dates        : 2014-01-30/2014-02-25
       Notes                  : (multiple lines)

6.8  Standard Type            : EXTERNAL H-MASER
       Input Frequency        : 10 MHz
       Effective Dates        : 2014-02-25/2018-06-14
       Notes                  : (multiple lines)

6.9  Standard Type            : INTERNAL
       Input Frequency        : (if external)
       Effective Dates        : 2018-06-14/2019-09-23
       Notes                  : (multiple lines)

6.10 Standard Type            : EXTERNAL cesium
       Input Frequency        : 10 MHz
       Effective Dates        : 2019-09-23/2023-09-07
       Notes                  : (multiple lines)

6.11 Standard Type            : INTERNAL
       Input Frequency        : (if external)
       Effective Dates        : 2023-09-07/2023-09-14
       Notes                  : Work on firmware update and RINEX 4.00 format
                              : startup

6.12 Standard Type            : EXTERNAL cesium
       Input Frequency        : 10 MHz
       Effective Dates        : 2023-09-14/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     : SLR
       Status                 : PERMANENT
       Effective Dates        : 1995-12-18/CCYY-MM-DD
       Notes                  : Aditional Geophysical Instrumentation
                              : Long Period Sysmometers (P)
                              : Short Period sysmometric local net (P)
                              : Magnetometric registers (P)
                              : Meteorological station (P)

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

10.1  Date                    : 2002-03-20/CCYY-MM-DD
      Event                   : Local TV Station Interference until 2002-04-01

10.x  Date                    : (CCYY-MM-DD/CCYY-MM-DD)
      Event                   : (TREE CLEARING/CONSTRUCTION/etc)


11.  On-Site, Point of Contact Agency Information

     Agency                   : Real Instituto y Observatorio de la Armada
     Preferred Abbreviation   : ROA
     Mailing Address          : Cecilio Pujazon s.n.
                              : E-11110 San Fernando. Cadiz
                              : Spain
     Primary Contact
       Contact Name           : ROA GNSS team
       Telephone (primary)    : +34 956 54 52 74
       Telephone (secondary)  : 
       Fax                    : 
       E-mail                 : gnss@roa.es
     Secondary Contact
       Contact Name           : Mr. David Rodríguez
       Telephone (primary)    : +34 956 54 52 74
       Telephone (secondary)  : 
       Fax                    : 
       E-mail                 : drodriguez@roa.es
     Additional Information   : Geophysic Department




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      : BKG
     Secondary Data Center    : 
     URL for More Information : 
     Hardcopy on File
       Site Map               : (Y or URL)
       Site Diagram           : X
       Horizon Mask           : (Y)
       Monument Description   : (Y)
       Site Pictures          : X
     Additional Information   : (multiple lines)
     Antenna Graphics with Dimensions

TR GEOD L1/L2 W/O GP   (compact, without groundplane)

                       ----+----                          <--  0.0625 L1/L2
                    /      +      \
++----------------+-----------------+-----------------++  <--  0.0591 TGP
++---------------+-------------------+----------------++  <--  0.0556 BGP
                 |                   |
                  |                 |
                   |               |
                    +------x------+                       <--  0.000  ARP=BPA

 <--                     0.467                      -->               NOTCHES
<--                      0.483                       -->              EDGE


   ARP: Antenna Reference Point
   L1 : L1 Phase Center                   L2 : L2 Phase Center
   TGP: Top of Ground Plane               BGP: Bottom of Ground Plane
   TPA: Top of Preamplifier               BPA: Bottom of Preamplifier


ANTENNA CONFIGURATION ON SITE SINCE 02-JUN-98:
Trimble L1/L2 Dorne Margolin element with chokerings
Model 29659.00

                       +-------+
                     /     +     \                        <--  0.1280 L2
                    |      +      |                       <--  0.1100 L1
  +--------------------------------------------------+    <--  0.1020 TCR
  |                                                  |
  |                                                  |
  |                                                  |
  |                                                  |
+-+--------------------------------------------------+-+  <--  0.0380
+-------------------+-------------+--------------------+  <--  0.0350 BCR
                    |             |
                    |             |
                    +------x------+                       <--  0.0000 BPA=ARP

<--                      0.3810                      -->


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

ANTENNA CONFIGURATION ON SITE SINCE 30-JAN-14:
LEIAR20

                        +-----+                           <--  0.1613
                      /         \
                     |           |
    +----------------+-----------+----------------+       <--  0.1113  TCR
    |                                             |
    |                                             |
    |                                             |
    |                                             |
  +-+---------------------------------------------+-+
  +------------------+-----------+------------------+     <--  0.0323  BCR
                     |           |
                     |           |
                     +-----x-----+                        <--  0.0013  BPA
                          +-+                             <--  0.0000  BAM=ARP

  <--                    0.3200                   -->