International GPS Service WTZL Site Information Form See Instructions at: ftp://igscb.jpl.nasa.gov/pub/station/general/sitelog_instr.txt 0. Form Prepared by (full name) : Uwe Hessels Date Prepared : 2019-01-23 Report Type : UPDATE If Update: Previous Site Log : wtzl_20160614.log Modified/Added Sections : 3.13, 3.14, 4.6, 4.7 1. Site Identification of the GNSS Monument Site Name : Wettzell / Germany Four Character ID : WTZL Monument Inscription : Pillar 1206 IERS DOMES Number : 14201M022 CDP Number : Monument Description : STEEL PLATE ON CONCRETE SURVEY TOWER Height of the Monument : 0.8 Monument Foundation : SCREW ANCHORED TO CONCRETE SURVEY TOWER Foundation Depth : Marker Description : STEEL REFERENCE SURVEY MARKER 1206 Date Installed : 2004-03-23T12:00Z Geologic Characteristic : Bedrock Bedrock Type : Cordirit-Silimanit-Gneiss Bedrock Condition : Weathered Fracture Spacing : 50-200 cm and over 200 cm Fault zones nearby : NO Distance/activity : Additional Information : The antenna is 7.5 m above the : ground. 2. Site Location Information City or Town : Bad Koetzting State or Province : Bavaria Country : Germany Tectonic Plate : Eurasian Approximate Position (ITRF) X coordinate (m) : 4075569.7013 Y coordinate (m) : 931852.6134 Z coordinate (m) : 4801565.1870 Latitude (N is +) : +490839.3175 Longitude (E is +) : +0125244.1375 Elevation (m,ellips.) : 00656.705 Additional Information : 3. GNSS Receiver Information 3.1 Receiver Type : LEICA GRX1200PRO Satellite System : GPS Serial Number : 450864 Firmware Version : 1.20/2.120 Elevation Cutoff Setting : 0 Date Installed : 2004-03-23T12:00Z Date Removed : 2005-09-23T10:00Z Temperature Stabiliz. : 2.0 Additional Information : 3.2 Receiver Type : LEICA GRX1200PRO Satellite System : GPS Serial Number : 450864 Firmware Version : 2.14/2.121 Elevation Cutoff Setting : 0 Date Installed : 2005-09-23T10:00Z Date Removed : 2005-12-21T15:00Z Temperature Stabiliz. : 2.0 Additional Information : 3.3 Receiver Type : LEICA GRX1200PRO Satellite System : GPS Serial Number : 450864 Firmware Version : 3.00/2.121 Elevation Cutoff Setting : 0 Date Installed : 2005-12-21T15:00Z Date Removed : 2006-02-09T12:00Z Temperature Stabiliz. : 2.0 Additional Information : 3.4 Receiver Type : LEICA GRX1200PRO Satellite System : GPS Serial Number : 450859 Firmware Version : 3.00/2.121 Elevation Cutoff Setting : 0 Date Installed : 2006-02-09T12:00Z Date Removed : 2007-02-22T12:23Z Temperature Stabiliz. : 2.0 Additional Information : 3.5 Receiver Type : LEICA GRX1200PRO Satellite System : GPS Serial Number : 450859 Firmware Version : 5.10/2.125 Elevation Cutoff Setting : 0 Date Installed : 2007-02-22T12:23Z Date Removed : 2007-09-05T12:59Z Temperature Stabiliz. : 2.0 Additional Information : 3.6 Receiver Type : LEICA GRX1200GGPRO Satellite System : GPS+GLONASS Serial Number : 350109 Firmware Version : 5.50/3.014 Elevation Cutoff Setting : 0 Date Installed : 2007-09-05T13:00Z Date Removed : 2007-12-06T07:00Z Temperature Stabiliz. : 2.0 Additional Information : 3.7 Receiver Type : LEICA GRX1200GGPRO Satellite System : GPS+GLONASS Serial Number : 355315 Firmware Version : 5.60/3.014 Elevation Cutoff Setting : 0 Date Installed : 2007-12-06T08:50Z Date Removed : 2008-01-28T11:59Z Temperature Stabiliz. : 2.0 Additional Information : 3.8 Receiver Type : TPS NETG3 Satellite System : GPS+GLONASS Serial Number : Q84LKRDL3WG Firmware Version : 3.2 Dec,07,2007 b6 Elevation Cutoff Setting : 0 Date Installed : 2008-01-28T12:00Z Date Removed : 2008-03-04T07:29Z Temperature Stabiliz. : 2.0 Additional Information : Additional Serial Number : 401-01058 on the type level. : /par/lock/notvis switched : to "on" for "all in view". 3.9 Receiver Type : TPS NETG3 Satellite System : GPS+GLONASS Serial Number : Q84LKRDL3WG Firmware Version : 3.2 Dec,20,2007 Elevation Cutoff Setting : 0 Date Installed : 2008-03-04T07:30Z Date Removed : 2008-05-19T08:20Z Temperature Stabiliz. : 2.0 Additional Information : Additional Serial Number : 401-01058 on the type level. : /par/lock/notvis switched : to "on" for "all in view". 3.10 Receiver Type : TPS NETG3 Satellite System : GPS+GLONASS Serial Number : Q84LKRDL3WG Firmware Version : 3.3 May,05,2008 p1 Elevation Cutoff Setting : 0 Date Installed : 2008-05-19T08:25Z Date Removed : 2008-06-17T14:14Z Temperature Stabiliz. : 2.0 Additional Information : Additional Serial Number : 401-01058 on the type level. : /par/lock/notvis switched : to "on" for "all in view". 3.11 Receiver Type : TPS NETG3 Satellite System : GPS+GLONASS Serial Number : Q84LKRDL3WG Firmware Version : 3.3 May,19,2008 p2 Elevation Cutoff Setting : 0 Date Installed : 2008-06-17T14:15Z Date Removed : 2008-08-26T06:29Z Temperature Stabiliz. : 2.0 Additional Information : Additional Serial Number : 401-01058 on the type level. : /par/lock/notvis switched : to "on" for "all in view". 3.12 Receiver Type : TPS NETG3 Satellite System : GPS+GLONASS Serial Number : Q84LKRDL3WG Firmware Version : 3.3 Jul,10,2008 p4 Elevation Cutoff Setting : 0 Date Installed : 2008-08-26T06:30Z Date Removed : 2008-09-18T23:59Z Temperature Stabiliz. : 2.0 Additional Information : Additional Serial Number : 401-01058 on the type level. : /par/lock/notvis switched : to "on" for "all in view". 3.13 Receiver Type : LEICA GRX1200+GNSS Satellite System : GPS+GLONASS Serial Number : 356686 Firmware Version : 8.70/6.112 Elevation Cutoff Setting : 0 Date Installed : 2016-06-13T12:00Z Date Removed : 2016-09-13T12:00Z Temperature Stabiliz. : 2.0 Additional Information : 3.14 Receiver Type : LEICA GRX1200+GNSS Satellite System : GPS Serial Number : 495250 Firmware Version : 9.20/6.405 Elevation Cutoff Setting : 0 Date Installed : 2019-01-23T12:00Z Date Removed : (CCYY-MM-DDThh:mmZ) Temperature Stabiliz. : 2.0 Additional Information : 3.x Receiver Type : (A20, from rcvr_ant.tab; see instructions) Satellite System : (GPS/GLONASS/GPS+GLONASS) Serial Number : (A5) 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 : LEIAX1202 NONE Serial Number : 3490047 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 000.1892 Marker->ARP North Ecc(m) : 000.0000 Marker->ARP East Ecc(m) : 000.0000 Alignment from True N : 0 Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : Leica Article No. 632390 Antenna Cable Length (m) : 30 Date Installed : 2004-03-23T12:00Z Date Removed : 2007-04-18T14:44Z Additional Information : 4.2 Antenna Type : LEIAX1202GG NONE Serial Number : 06100022 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 000.1892 Marker->ARP North Ecc(m) : 000.0000 Marker->ARP East Ecc(m) : 000.0000 Alignment from True N : 0 Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : Leica Article No. 632390 Antenna Cable Length (m) : 30 Date Installed : 2007-04-18T14:45Z Date Removed : 2007-12-06T07:00Z Additional Information : 4.3 Antenna Type : LEIAT504GG LEIS Serial Number : 200480 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 000.0745 Marker->ARP North Ecc(m) : 000.0000 Marker->ARP East Ecc(m) : 000.0000 Alignment from True N : 0 Antenna Radome Type : LEIS Radome Serial Number : Antenna Cable Type : Leica Article No. 632390 Antenna Cable Length (m) : 30 Date Installed : 2007-12-06T08:50Z Date Removed : 2008-01-28T11:59Z Additional Information : An incorrect Marker->ARP Up Ecc : antenna height 000.0605 instead : of true 000.0745 was given. : Corrected on March 13, 2008. 4.4 Antenna Type : TPSCR.G3 TPSH Serial Number : 383-0203 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 000.0745 Marker->ARP North Ecc(m) : 000.0000 Marker->ARP East Ecc(m) : 000.0000 Alignment from True N : 0 Antenna Radome Type : TPSH Radome Serial Number : Antenna Cable Type : Leica Article No. 632390 Antenna Cable Length (m) : 30 Date Installed : 2008-01-28T12:00Z Date Removed : 2008-07-22T14:59Z Additional Information : P/N 01-044301-01 : Antenna calibrated absolute : by GEO++ GmbH Garbsen, 11-November-2007. : An incorrect Marker->ARP Up Ecc : antenna height 000.0605 instead : of true 000.0745 was given. : Corrected on March 13, 2008. 4.5 Antenna Type : TPSCR3_GGD CONE Serial Number : 00173 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 000.0745 Marker->ARP North Ecc(m) : 000.0000 Marker->ARP East Ecc(m) : 000.0000 Alignment from True N : 0 Antenna Radome Type : CONE Radome Serial Number : Antenna Cable Type : ECOFLEX 10 Antenna Cable Length (m) : 30 Date Installed : 2008-07-22T15:00Z Date Removed : 2008-09-18T23:59Z Additional Information : Antenna calibrated absolute : by GEO++ GmbH Garbsen, 14-APRIL-2008. 4.6 Antenna Type : TWIVP6000 NONE Serial Number : 603500008 Antenna Reference Point : BAM Marker->ARP Up Ecc. (m) : 000.0000 Marker->ARP North Ecc(m) : 000.0000 Marker->ARP East Ecc(m) : 000.0000 Alignment from True N : 0 Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : ECOFLEX 10 Antenna Cable Length (m) : 30 Date Installed : 2016-06-13T12:00Z Date Removed : 2016-09-13T12:00Z Additional Information : 4.7 Antenna Type : LEIAR10 NONE Serial Number : 21323016 Antenna Reference Point : BAM Marker->ARP Up Ecc. (m) : 0.1550 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 : ECOFLEX 10 Antenna Cable Length : 30 Date Installed : 2019-01-23T12:00Z 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 : (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 : VLBI Ref Point Tied Marker Usage : VLBI Tied Marker CDP Number : 7224 Tied Marker DOMES Number : 14201S004 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : -38.1545 dy (m) : -118.7033 dz (m) : +59.2950 Accuracy (mm) : 1.3 Survey method : TRIANGULATION Date Measured : 2004-10-01T10:00Z Additional Information : 5.2 Tied Marker Name : SLR WLRS Tied Marker Usage : SLR Tied Marker CDP Number : 8834 Tied Marker DOMES Number : 14201S018 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : -1.1810 dy (m) : -68.5086 dz (m) : +13.4920 Accuracy (mm) : 0.6 Survey method : TRIANGULATION Date Measured : 2004-10-01T10:00Z Additional Information : 5.3 Tied Marker Name : TIGO VLBI Tied Marker Usage : VLBI Tied Marker CDP Number : 759324012 Tied Marker DOMES Number : 14201S100 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : -6.2545 dy (m) : -99.04929 dz (m) : +13.2250 Accuracy (mm) : 0.9 Survey method : TRIANGULATION Date Measured : 2004-10-01T10:00Z Additional Information : 5.4 Tied Marker Name : TIGO SLR Tied Marker Usage : SLR Tied Marker CDP Number : 75947901 Tied Marker DOMES Number : 14201M200 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : +16.9997 dy (m) : -121.0152 dz (m) : -2.5081 Accuracy (mm) : 1.5 Survey method : TRIANGULATION Date Measured : 2004-10-01T10:00Z Additional Information : 5.5 Tied Marker Name : 1200 ROGUE SNR-800 = WETT Tied Marker Usage : GPS Tied Marker CDP Number : Tied Marker DOMES Number : 14201M009 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : +0.5378 dy (m) : -1.2879 dz (m) : -0.0317 Accuracy (mm) : 1 Survey method : TRIANGULATION Date Measured : 1995-02-13T15:00Z Additional Information : 5.6 Tied Marker Name : 1202 LEICA GRX1200GGPRO = WTZR Tied Marker Usage : GPS+GLONASS Tied Marker CDP Number : Tied Marker DOMES Number : 14201M010 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : +2.6428 dy (m) : -0.3069 dz (m) : -2.0257 Accuracy (mm) : 0.4 Survey method : TRIANGULATION Date Measured : 2004-10-01T10:00Z Additional Information : IGS Reference Frame Station 5.7 Tied Marker Name : 1201 TRIMBLE 4000SSI = WTZT Tied Marker Usage : GPS Tied Marker CDP Number : Tied Marker DOMES Number : 14201M011 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : -0.4284 dy (m) : +1.3149 dz (m) : +0.1316 Accuracy (mm) : 0.4 Survey method : TRIANGULATION Date Measured : 2004-10-01T10:00Z Additional Information : 5.8 Tied Marker Name : 1203 JPS LEGACY = WTZJ Tied Marker Usage : GPS+GLONASS Tied Marker CDP Number : Tied Marker DOMES Number : 14201M012 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : +1.9769 dy (m) : +1.2622 dz (m) : -1.8975 Accuracy (mm) : 0.4 Survey method : TRIANGULATION Date Measured : 2004-10-01T10:00Z Additional Information : 5.9 Tied Marker Name : 1204 ASHTECH Z-XII3T = WTZA Tied Marker Usage : GPS Tied Marker CDP Number : Tied Marker DOMES Number : 14201M013 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : +0.4519 dy (m) : -1.3084 dz (m) : -0.1341 Accuracy (mm) : 0.4 Survey method : TRIANGULATION Date Measured : 2004-10-01T10:00Z Additional Information : 5.10 Tied Marker Name : 1205 TPS E_GGD = WTZZ Tied Marker Usage : GPS+GLONASS Tied Marker CDP Number : Tied Marker DOMES Number : 14201M014 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : +1.5194 dy (m) : -0.9934 dz (m) : -1.1198 Accuracy (mm) : 0.4 Survey method : TRIANGULATION Date Measured : 2004-10-01T10:00Z Additional Information : 5.11 Tied Marker Name : SEPT POLARX2 = WTZS Tied Marker Usage : GPS Tied Marker CDP Number : Tied Marker DOMES Number : 14201M015 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : -42.7289 dy (m) : -31.7757 dz (m) : 38.8512 Accuracy (mm) : 5 Survey method : TRIANGULATION Date Measured : 2005-07-27 Additional Information : 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) : (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 : 2004-03-23/2005-09-23 Notes : 6.2 Standard Type : CESIUM Input Frequency : 5 MHz Effective Dates : 2005-09-23/2007-06-23 Notes : Cesium Master Clock : for external input reference : oscillator. 6.3 Standard Type : INTERNAL Input Frequency : 5 MHz Effective Dates : 2007-06-23/2007-06-28 Notes : 6.4 Standard Type : EXTERNAL H-MASER EFOS 18 Input Frequency : 5 MHz Effective Dates : 2007-06-28/CCYY-MM-DD Notes : Use H-Maser for external : input reference oscillator. : H-Maser EFOS 18 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 : Status : Effective Dates : Notes : 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 : (hPa) 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 Degredations : (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/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 : Bundesamt fuer Kartographie : und Geodaesie : Geodetic Observatory Wettzell Preferred Abbreviation : BKG Mailing Address : Bundesamt fuer Kartographie : und Geodaesie : Geodetic Observatory Wettzell : D-93444 Bad Koetzting : Germany Primary Contact Contact Name : Dr. Reiner Dassing Telephone (primary) : ++49-9941-603112 Telephone (secondary) : ++49-9941-6030 Fax : ++49-9941-603222 E-mail : reiner.dassing@bkg.bund.de Secondary Contact Contact Name : Uwe Hessels Telephone (primary) : ++49-9941-603208 Telephone (secondary) : ++49-9941-6030 Fax : ++49-9941-603222 E-mail : uwe.hessels@bkg.bund.de Additional Information : 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 : www.bkg.bund.de Hardcopy on File Site Map : (Y or URL) Site Diagram : Y Horizon Mask : Y Monument Description : Y Site Pictures : Y Additional Information : Data available Antenna Graphics with Dimensions LEIAX1202 from 2004-03-23 until 2007-04-18 _________ / \ / + \ / + \ +-----------------------------------------------+ +-----------------------------------------------+ \ ---------+ +x+ +---------/ ========= ========= <-- 0.000 ARP=BPA LEIAX1202GG from 2007-04-18 until 2007-12-06 _________ / \ / + \ / + \ +-----------------------------------------------+ +-----------------------------------------------+ \ ---------+ +x+ +---------/ ========= ========= <-- 0.000 ARP=BPA LEIAT504GG from 2007-06-12 until 2008-01-28 +-------+ <-- 0.1393 / + \ | + | +-----------------+-------------+------------------+ <-- 0.1012 TCR | | | | | | | | +-+--------------------------------------------------+-+ +-------------------+-------------+--------------------+ <-- 0.0345 BCR | | | | +------x------+ <-- 0.000 BPA=ARP <-- 0.3794 --> TPSCR.G3 from 2008-01-28 until 2008-07-22 +-------+ / + \ | + | +-----------------+-------------+------------------+ <-- 0.1015 TCR | | | | | | | | +-+--------------------------------------------------+-+ +-------------------+-------------+--------------------+ <-- 0.0345 BCR | | | | +------x------+ <-- 0.000 BPA=ARP <-- 0.238 --> <-- 0.380 --> TPSCR3_GGD from 2008-07-22 until 2008-09-18 with white conical Dome CONE --------- / + \ <-- 0.104 L2 | + | <-- 0.081 L1 +--------------------------------------------------+ <-- 0.071 TCR | | | | | | | | +-----------------+-------------+------------------+ <-- 0.003 BCR +-----x-----+ <-- 0.000 BPA=ARP <-- 0.326 --> TWIVP6000 from 2016-06-13 +---------------------------------+ <-- 0.1245 | | | | | | | | | | | | | | +-----------------------------------+ +-----------------------------------+ \ / +---------------------------+ | | +-----------+---+-----------+ \_/ | | +-x-+ <-- 0.0000 BAM=ARP NOM=NRP <-- 0.1099 --> <-- 0.1670 --> 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 BAM: Bottom of antenna mount