AMC400USA 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) : Tatevik Shakhbandaryan Date Prepared : 2021-04-26 Report Type : UPDATE If Update: Previous Site Log : amc4_20200206.log Modified/Added Sections : 3.4,3.5 1. Site Identification of the GNSS Monument Site Name : Alternate Master Clock (UTC calibrated) Four Character ID : AMC4 Monument Inscription : NONE IERS DOMES Number : 40472S005 CDP Number : NONE Monument Description : Height of the Monument : Monument Foundation : Foundation Depth : Marker Description : Date Installed : 2018-06-20T00:00Z Geologic Characteristic : Bedrock Type : Bedrock Condition : Fracture Spacing : Fault zones nearby : Distance/activity : Additional Information : 2. Site Location Information City or Town : Colorado Springs State or Province : Colorado Country : United States of America Tectonic Plate : NORTH AMERICAN Approximate Position (ITRF) X coordinate (m) : -1248596.405 Y coordinate (m) : -4819428.210 Z coordinate (m) : 3976505.930 Latitude (N is +) : +384811.25 Longitude (E is +) : -1043128.55 Elevation (m,ellips.) : 1911.3941 Additional Information : 3. GNSS Receiver Information 3.1 Receiver Type : ASHTECH Z-XII3T Satellite System : GPS Serial Number : RT920013101 Firmware Version : IL01-1D04-MCF-12MX Elevation Cutoff Setting : 4 deg Date Installed : 2018-04-05T00:00Z Date Removed : 2018-09-24T23:59Z Temperature Stabiliz. : none Additional Information : 3.2 Receiver Type : SEPT POLARX5TR Satellite System : GPS+GLO+GAL+BDS+QZSS Serial Number : 3013929 Firmware Version : 5.1.2 Elevation Cutoff Setting : 0 deg Date Installed : 2018-09-26T00:00Z Date Removed : 2019-09-20T19:00Z Temperature Stabiliz. : Additional Information : 3.3 Receiver Type : SEPT POLARX5TR Satellite System : GPS+GLO+GAL+BDS+QZSS Serial Number : 3013929 Firmware Version : 0.0.0-181002 Elevation Cutoff Setting : 0 deg Date Installed : 2019-09-20T19:00Z Date Removed : 2020-02-05T22:12Z Temperature Stabiliz. : Additional Information : 3.4 Receiver Type : SEPT POLARX5TR Satellite System : GPS+GLO+GAL+BDS+QZSS Serial Number : 3013929 Firmware Version : 5.3.2 Elevation Cutoff Setting : 0 deg Date Installed : 2020-02-05T22:12Z Date Removed : 2021-04-12T17:15Z Temperature Stabiliz. : Additional Information : 3.5 Receiver Type : SEPT POLARX5TR Satellite System : GPS+GLO+GAL+BDS Serial Number : 3013929 Firmware Version : 5.4.0 Elevation Cutoff Setting : 0 deg Date Installed : 2021-04-12T17:15Z 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 : TPSCR.G5C NONE Serial Number : 1364-10065 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 : oriented North but not measured deg Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : Antenna Cable Length : Date Installed : 2018-06-20T00:00Z 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.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 H-MASER Input Frequency : 5 MHz Effective Dates : 1998-03-24/CCYY-MM-DD Notes : reference signal from USNO Alternate Master : Clock #1, the back-up realization of UTC(USNO) : via two-way satellite time transfer; : All calibration delays will be : accounted for in the RAW pseudorange data : produced by AMC2. 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 10.1 Date : 2018-11-28/CCYY-MM-DD Event : While we are evaluating the absolute calibration : values please note AMC4 data starting from : 2018-11-28 has no calibration being applied to : RINEX data. : When new calibration values become available : RINEX data will be reprocessed and resubmitted. 10.x Date : (CCYY-MM-DD/CCYY-MM-DD) Event : (TREE CLEARING/CONSTRUCTION/etc) 11. On-Site, Point of Contact Agency Information Agency : U.S. Naval Observatory, Alternate Master Clock Preferred Abbreviation : USNO/AMC Mailing Address : USNO/AMC : 400 O'Malley Ave, Suite 44 : Schriever AFB, CO 80912-4044 Primary Contact Contact Name : Ed Powers (USNO) Telephone (primary) : 202-762-1451 Telephone (secondary) : Fax : 202-762-1511 E-mail : edward.powers1@navy.mil Secondary Contact Contact Name : Stephen Mitchell Telephone (primary) : 202-762-1455 Telephone (secondary) : Fax : 202-762-1511 E-mail : stephen.j.mitchell1@navy.mil Additional Information : Regional Data Center is JPL : Dave Stowers (JPL) : 818-354-7055 : 818-393-4965 : dstowers@jpl.nasa.gov 12. Responsible Agency (if different from 11.) Agency : (same as above in 11.) Preferred Abbreviation : Mailing Address : Primary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Secondary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Additional Information : 13. More Information Primary Data Center : JPL Secondary Data Center : CDDIS URL for More Information : Hardcopy on File Site Map : N Site Diagram : N Horizon Mask : N Monument Description : no monument Site Pictures : N Additional Information : Antenna Graphics with Dimensions (insert text graphic from file antenna.gra)