AUBG00DEU 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) : GREF Operator (operator.gref@bkg.bund.de) Date Prepared : 2024-10-25 Report Type : UPDATE If Update: Previous Site Log : aubg00deu_20240709.log Modified/Added Sections : 8.1.2, 8.1.1, 8.2.2, 8.2.1, 8.3.2, 8.3.1, 8.5.8, : 8.5.6, 8.5.4, 8.5.2, 8.5.1, 8.5.3, 8.5.5, 8.5.7 1. Site Identification of the GNSS Monument Site Name : Augsburg Four Character ID : AUBG Monument Inscription : IERS DOMES Number : 10913M001 CDP Number : (A4) Monument Description : Steelpipe with heat protection Height of the Monument : 1.8 m Monument Foundation : 2012 Foundation Depth : 13 m Marker Description : SURVEY MARKER BOLT ON THE PILLAR Date Installed : 2012-10-10 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 : Survey Marker Bolt on a pillar. : Antenna mounted with a special screw : adapter on a rivet thread of a circular : tube of steel filled with concrete, : 15 m length, : placed on the ground at airport of Augsburg. 2. Site Location Information City or Town : Augsburg State or Province : Bavaria Country : Germany Tectonic Plate : EURASIAN Approximate Position (ITRF) X coordinate (m) : 4164312.900 Y coordinate (m) : 803525.900 Z coordinate (m) : 4748474.900 Latitude (N is +) : +482516.69 Longitude (E is +) : +0105516.68 Elevation (m,ellips.) : 508.6 Additional Information : (multiple lines) 3. GNSS Receiver Information 3.1 Receiver Type : LEICA GRX1200+GNSS Satellite System : GPS+GLO+GAL Serial Number : 355615 Firmware Version : 8.51/6.111 Elevation Cutoff Setting : 0 deg Date Installed : 2012-10-10T00:00Z Date Removed : 2013-04-22T10:50Z Temperature Stabiliz. : none Additional Information : ME serial number BDU10090228 3.2 Receiver Type : LEICA GRX1200+GNSS Satellite System : GPS+GLO+GAL+SBAS Serial Number : 355615 Firmware Version : 8.70/6.112 Elevation Cutoff Setting : 0 deg Date Installed : 2013-04-22T11:20Z Date Removed : 2014-06-04T07:15Z Temperature Stabiliz. : none Additional Information : ME serial number BDU10090228 3.3 Receiver Type : LEICA GR25 Satellite System : GPS+GLO+GAL+SBAS Serial Number : 1830200 Firmware Version : 3.03/6.214 Elevation Cutoff Setting : 0 deg Date Installed : 2014-06-04T07:45Z Date Removed : 2015-01-23T10:10Z Temperature Stabiliz. : none Additional Information : ME serial number BDU11420258 3.4 Receiver Type : LEICA GR25 Satellite System : GPS+GLO+GAL+SBAS Serial Number : 1830200 Firmware Version : 3.11.1639 Elevation Cutoff Setting : 0 deg Date Installed : 2015-01-23T10:20Z Date Removed : 2016-05-02T11:30Z Temperature Stabiliz. : none Additional Information : ME serial number BDU11420258 3.5 Receiver Type : LEICA GR25 Satellite System : GPS+GLO+GAL+SBAS Serial Number : 1830200 Firmware Version : 3.22.1818 Elevation Cutoff Setting : 0 deg Date Installed : 2016-05-02T11:30Z Date Removed : 2016-07-12T10:30Z Temperature Stabiliz. : none Additional Information : ME serial number BDU11420258 3.6 Receiver Type : LEICA GR25 Satellite System : GPS+GLO+GAL+SBAS Serial Number : 1830200 Firmware Version : 4.00.335 Elevation Cutoff Setting : 0 deg Date Installed : 2016-07-12T10:30Z Date Removed : 2016-12-27T12:50Z Temperature Stabiliz. : none Additional Information : ME serial number BDU11420258 3.7 Receiver Type : LEICA GR25 Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 1830200 Firmware Version : 4.02.386 Elevation Cutoff Setting : 0 deg Date Installed : 2016-12-27T12:50Z Date Removed : 2017-04-10T10:40Z Temperature Stabiliz. : none Additional Information : ME serial number BDU11420258 3.8 Receiver Type : LEICA GR25 Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 1830200 Firmware Version : 4.11.606 Elevation Cutoff Setting : 0 deg Date Installed : 2017-04-10T10:40Z Date Removed : 2018-11-27T10:00Z Temperature Stabiliz. : none Additional Information : ME serial number BDU11420258 3.9 Receiver Type : LEICA GR50 Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 1870740 Firmware Version : 4.31/7.403 Elevation Cutoff Setting : 0 deg Date Installed : 2018-11-27T10:00Z Date Removed : 2021-05-31T11:45Z Temperature Stabiliz. : none Additional Information : ME serial number BMGZ17490078W 3.10 Receiver Type : LEICA GR50 Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 1870740 Firmware Version : 4.50/7.710 Elevation Cutoff Setting : 0 deg Date Installed : 2021-05-31T11:45Z Date Removed : 2022-03-03T07:50Z Temperature Stabiliz. : none Additional Information : ME serial number BMGZ17490078W 3.11 Receiver Type : LEICA GR50 Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 1870740 Firmware Version : 4.52/7.711 Elevation Cutoff Setting : 0 deg Date Installed : 2022-03-03T07:50Z Date Removed : 2022-09-05T12:16Z Temperature Stabiliz. : none Additional Information : ME serial number BMGZ17490078W 3.12 Receiver Type : LEICA GR50 Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 1870740 Firmware Version : 4.60/7.811 Elevation Cutoff Setting : 0 deg Date Installed : 2022-09-05T12:16Z Date Removed : 2023-02-08T09:30Z Temperature Stabiliz. : none Additional Information : ME serial number BMGZ17490078W 3.13 Receiver Type : JAVAD TRE_3 DELTA Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 02046 Firmware Version : 4.1.06-221128 Elevation Cutoff Setting : 0 deg Date Installed : 2023-02-08T09:30Z Date Removed : 2024-02-15T09:52Z Temperature Stabiliz. : none Additional Information : Board Id : 1QCT38OVDDOOM0QYWF011R6OE8 3.14 Receiver Type : JAVAD TRE_3 DELTA Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 02046 Firmware Version : 4.3.00-231129 Elevation Cutoff Setting : 0 deg Date Installed : 2024-02-15T09:52Z Date Removed : 2024-07-09T09:22Z Temperature Stabiliz. : none Additional Information : Board Id : 1QCT38OVDDOOM0QYWF011R6OE8 3.15 Receiver Type : JAVAD TRE_3S DELTA Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 04930 Firmware Version : 4.3.00-231129 Elevation Cutoff Setting : 0 deg Date Installed : 2024-07-09T10:20Z Date Removed : CCYY-MM-DDThh:mmZ Temperature Stabiliz. : none Additional Information : Board Id : S354C542A154DCE72BFDA2D1AF 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 : LEIAR25.R4 LEIT Serial Number : 10211013 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0450 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 deg Antenna Radome Type : LEIT Radome Serial Number : Antenna Cable Type : AIRCOM+ Antenna Cable Length : 23 m Date Installed : 2012-10-10T00:00Z Date Removed : 2018-11-27T10:00Z Additional Information : Antenna individual calibrated : absolute by GEO++ 4.2 Antenna Type : LEIAR25.R4 LEIT Serial Number : 725552 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0450 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 deg Antenna Radome Type : LEIT Radome Serial Number : Antenna Cable Type : AIRCOM+ Antenna Cable Length : 23 m Date Installed : 2018-11-27T10:00Z Date Removed : 2021-08-09T15:00Z Additional Information : Antenna individual calibrated absolutely by : : GEO++ - ROBOT 2013-01-11 : : Uni Bonn - CHAMBER 2013-03-11 : : Uni Bonn - CHAMBER 2018-08-23 4.3 Antenna Type : LEIAR25.R3 LEIT Serial Number : 08500013 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0450 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 deg Antenna Radome Type : LEIT Radome Serial Number : Antenna Cable Type : AIRCOM+ Antenna Cable Length : 23 m Date Installed : 2021-08-09T15:00Z Date Removed : CCYY-MM-DDThh:mmZ Additional Information : Antenna individual calibrated absolutely by : : GEO++ - ROBOT 2010-07-02 : : GEO++ - ROBOT 2021-06-03 : : Uni Bonn - CHAMBER 2010-08-06 : : Uni Bonn - CHAMBER 2019-01-17 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 : 2012-10-10/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 : GNSS AUBG01DEU Status : PERMANENT Effective Dates : 2020-07-28/CCYY-MM-DD Notes : Secondary Receiver at the same antenna. : More information and data available on : request. 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 : WXTPTU Manufacturer : Vaisala Serial Number : J0130012 Data Sampling Interval : 10 sec Accuracy (% rel h) : 3 % rel h Aspiration : NATURAL Height Diff to Ant : -0.5 m Calibration date : 2013-01-10 Effective Dates : 2014-06-04/2024-10-21 Notes : Vaisala WXT520 (heated) SN: J0240002 : Humidity Sensor is 0.5 m under the antenna : capacitive thin film polymer HUMICAP 180 sensor 8.1.2 Humidity Sensor Model : WXTPTU Manufacturer : Vaisala Serial Number : U4850085 Data Sampling Interval : 10 sec Accuracy (% rel h) : 3 % rel h Aspiration : NATURAL Height Diff to Ant : -0.5 m Calibration date : 2023-01-03 Effective Dates : 2024-10-21/CCYY-MM-DD Notes : Vaisala WXT536 (heated) SN: P3720248 : Humidity Sensor is 0.5 m under the antenna : capacitive thin film polymer HUMICAP 180 sensor 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 : WXTPTU Manufacturer : Vaisala Serial Number : J0130012 Data Sampling Interval : 10 sec Accuracy : 1 hPa Height Diff to Ant : -0.5 m Calibration date : 2013-01-10 Effective Dates : 2014-06-04/2024-10-21 Notes : Vaisala WXT520 (heated) SN: J0240002 : Pressure Sensor is 0.5 m under the antenna : capacitive silicon BAROCAP sensor 8.2.2 Pressure Sensor Model : WXTPTU Manufacturer : Vaisala Serial Number : U4850085 Data Sampling Interval : 10 sec Accuracy : 1 hPa Height Diff to Ant : -0.5 m Calibration date : 2023-01-03 Effective Dates : 2024-10-21/CCYY-MM-DD Notes : Vaisala WXT536 (heated) SN: P3720248 : Pressure Sensor is 0.5 m under the antenna : capacitive silicon BAROCAP sensor 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 : WXTPTU Manufacturer : Vaisala Serial Number : J0130012 Data Sampling Interval : 10 sec Accuracy : 0.3 deg C Aspiration : NATURAL Height Diff to Ant : -0.5 m Calibration date : 2013-01-10 Effective Dates : 2014-06-04/2024-10-21 Notes : Vaisala WXT520 (heated) SN: J0240002 : Temperature Sensor is 0.5 m under the antenna : capacitive ceramic THERMOCAP sensor 8.3.2 Temp. Sensor Model : WXTPTU Manufacturer : Vaisala Serial Number : U4850085 Data Sampling Interval : 10 sec Accuracy : 0.3 deg C Aspiration : NATURAL Height Diff to Ant : -0.5 m Calibration date : 2023-01-03 Effective Dates : 2024-10-21/CCYY-MM-DD Notes : Vaisala WXT536 (heated) SN: P3720248 : Temperature Sensor is 0.5 m under the antenna : capacitive ceramic THERMOCAP sensor 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) 8.5.1 Other Instrumentation : Wind Azimut : Wind Sensor Model WXT520 (heated) : Manufacturer Vaisala : Serial Number J0240002 : Data Sampling Interval 10 sec : Accuracy 3 deg : Height Diff to Ant -0.5 m : Test date 2013-01-10 : Effective Dates 2014-06-04/2024-10-21 : Notes Wind Sensor is 0.5 m under the antenna : Notes ultrasonic WINDCAP sensor 8.5.2 Other Instrumentation : Wind Speed : Wind Sensor Model WXT520 (heated) : Manufacturer Vaisala : Serial Number J0240002 : Data Sampling Interval 10 sec : Accuracy : measurement values 0..35 m/s 0.3 m/s or 3% : measurement values 36..60 m/s 5% : Height Diff to Ant -0.5 m : Test date 2013-01-10 : Effective Dates 2014-06-04/2024-10-21 : Notes Wind Sensor is 0.5 m under the antenna : Notes ultrasonic WINDCAP sensor 8.5.3 Other Instrumentation : Rain Increment : Rain Sensor Model WXT520 (heated) : Manufacturer Vaisala : Serial Number J0240002 : Data Sampling Interval 10 sec : Accuracy 5 % : Height Diff to Ant -0.5 m : Test date 2013-01-10 : Effective Dates 2014-06-04/2024-10-21 : Notes Rain Sensor is 0.5 m under the antenna : Notes piezoelectrical RAINCAP sensor 8.5.4 Other Instrumentation : Hail Indicator : Hail Sensor Model WXT520 (heated) : Manufacturer Vaisala : Serial Number J0240002 : Data Sampling Interval 10 sec : Accuracy 5 % : Height Diff to Ant -0.5 m : Test date 2013-01-10 : Effective Dates 2014-06-04/2024-10-21 : Notes Hail Sensor is 0.5 m under the antenna : Notes piezoelectrical RAINCAP sensor 8.5.5 Other Instrumentation : Wind Azimut : Wind Sensor Model WXT536TOP (heated) : Manufacturer Vaisala : Serial Number P2723241 : Data Sampling Interval 10 sec : Accuracy 3 deg : Height Diff to Ant -0.5 m : Test date 2023-01-03 : Effective Dates 2024-10-21/CCYY-MM-DD : Notes Vaisala WXT536 (heated) SN: P3720248 : Notes Wind Sensor is 0.5 m under the antenna : Notes ultrasonic WINDCAP sensor 8.5.6 Other Instrumentation : Wind Speed : Wind Sensor Model WXT536TOP (heated) : Manufacturer Vaisala : Serial Number P2723241 : Data Sampling Interval 10 sec : Accuracy : measurement values 0..35 m/s 0.3 m/s or 3% : measurement values 36..60 m/s 5% : Height Diff to Ant -0.5 m : Test date 2023-01-03 : Effective Dates 2024-10-21/CCYY-MM-DD : Notes Vaisala WXT536 (heated) SN: P3720248 : Notes Wind Sensor is 0.5 m under the antenna : Notes ultrasonic WINDCAP sensor 8.5.7 Other Instrumentation : Rain Increment : Rain Sensor Model WXT536TOP (heated) : Manufacturer Vaisala : Serial Number P2723241 : Data Sampling Interval 10 sec : Accuracy 5 % : Height Diff to Ant -0.5 m : Test date 2023-01-03 : Effective Dates 2024-10-21/CCYY-MM-DD : Notes Vaisala WXT536 (heated) SN: P3720248 : Notes Rain Sensor is 0.5 m under the antenna : Notes piezoelectrical RAINCAP sensor 8.5.8 Other Instrumentation : Hail Indicator : Hail Sensor Model WXT536TOP (heated) : Manufacturer Vaisala : Serial Number P2723241 : Data Sampling Interval 10 sec : Accuracy 5 % : Height Diff to Ant -0.5 m : Test date 2023-01-03 : Effective Dates 2024-10-21/CCYY-MM-DD : Notes Vaisala WXT536 (heated) SN: P3720248 : Notes Hail Sensor is 0.5 m under the antenna : Notes piezoelectrical RAINCAP sensor 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 : Bundesamt fuer Kartographie und Geodaesie : Department of Geodaesie Preferred Abbreviation : BKG Mailing Address : Richard-Strauss-Allee 11 : D-60598 Frankfurt a.M. : Germany Primary Contact Contact Name : GREF Operator Telephone (primary) : +49 341 5634410 Telephone (secondary) : +49 341 5634432 Fax : +49 341 5634415 E-mail : operator.gref@bkg.bund.de Secondary Contact Contact Name : BKG GNSS Data Center Telephone (primary) : +49 69 6333274 Telephone (secondary) : +49 69 63331 Fax : +49 69 6333425 E-mail : bkg-gdc@bkg.bund.de 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 : BKG Secondary Data Center : BEV URL for More Information : https://gref.bkg.bund.de 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 Additional Information : (multiple lines) Antenna Graphics with Dimensions +-------+ <-- 0.1995 / \ +---+-------------+---+ <-- 0.1606 TCR | | |---------------------------| |---------------------------------| |---------------------------------------| +---------------------------------------------+ | | | | +-+---------------------------------------------+-+ +-----------------+-------------+-----------------+ <-- 0.0320 BCR | | | | +------x------+ <-- 0.0000 BPA=ARP <-- 0.3802 --> LEIAR25.R3 +-------+ <-- 0.1995 / \ +---+-------------+---+ <-- 0.1606 TCR | | |---------------------------| |---------------------------------| |---------------------------------------| +---------------------------------------------+ | | | | +-+---------------------------------------------+-+ +-----------------+-------------+-----------------+ <-- 0.0320 BCR | | | | +------x------+ <-- 0.0000 BPA=ARP BAM <-- 0.3802 --> ARP: Antenna Reference Point L1 : L1 Phase Center L2 : L2 Phase Center TCR: Top of Chokering BCR: Bottom of Chokering TGP: Top of Ground Plane BGP: Bottom of Ground Plane TPA: Top of Preamplifier BPA: Bottom of Preamplifier TOP: Top of Pole BOP: Bottom of Pole All dimensions are in meters.