AMCT Site Information Form International GPS Service for Geodynamics 0. Form Prepared by (full name) : Bill Bollwerk, Jim Ray (USNO) Date Prepared : 20-APR-1998 Report Type : NEW Prepared Using : 1. Site Identification of the GPS Monument Site Name : Alternate Master Clock (timing test) Four Character ID : AMCT Monument Inscription : no monument, GPS antenna ARP IERS DOMES Number : 40472S003 CDP Number : none Date Installed : 24-MAR-1998 Geologic Characteristic : on roof of 5-story building Bedrock Type : Bedrock Condition : Fracture Spacing : Notes : Additional Information : The antenna is mounted on top of the roof : (flat) of Building 400 (5 stories) at Falcon : Air Force Base, outside of Colorado Springs, : Colorado. There are no nearby geodetic markers : or control points. 2. Site Location Information City or Town : Falcon Air Force Base, Colorado Springs State or Province : Colorado Country : U.S.A. Tectonic Plate : North American Approximate Position X coordinate (m) : -1248596.241 Y coordinate (m) : -4819429.589 Z coordinate (m) : 3976506.987 Latitude (deg) : 38.803114 N Longitude (deg) : 255.475405 E Elevation (m) : 1911.087 Additional Information : (multiple lines) 3. GPS Receiver Information 3.1 Receiver Type : TURBOROGUE SNR12 Serial Number : T247 Firmware Version : 3.2.32.1 Date Installed : 24-MAR-1998 Date Removed : (dd-MMM-yyyy hh:mm UT) Additional Information : (multiple lines) 3.x Receiver Type : Serial Number : Firmware Version : Date Installed : (dd-MMM-yyyy hh:mm UT) Date Removed : (dd-MMM-yyyy hh:mm UT) Additional Information : (multiple lines) 4. GPS Antenna Information 4.1 Antenna Type : DORNE MARGOLIN T Serial Number : 308 Antenna Height (m) : 0.0 Antenna Reference Point : ARP Degree Offset from North : oriented North but not measured Antenna Radome Type : none Date Installed : 24-MAR-1998 Date Removed : (dd-MMM-yyyy hh:mm UT) Additional Information : This antenna is located 28.5 inches nearly : directly north of the antenna for a TTR-4P : timing receiver. NIMA surveyed the TTR-4P : antenna location in August 1996 with the : following results: : 38 Degrees 48' 11.1860" N ( 38.803107222 N) : 104 Degrees 31' 28.5435" W (255.475404583 E) : 1911.087 m Ellipsoid Height : with a stated accuracy of +/- 30 cm (1 sigma) : in each component. The TurboRogue antenna : is mounted at the same height level on the : same T-bar as the TTR-4P antenna. 4.x Antenna Type : Serial Number : Antenna Height (m) : (m) Antenna Reference Point : (ARP/BCR/BPA) Degree Offset from North : Antenna Radome Type : Date Installed : (dd-MMM-yyyy hh:mm UT) Date Removed : (dd-MMM-yyyy hh:mm UT) Additional Information : (multiple lines) 5. Local Site Ties 5.1 Monument Name : none Site Ref CDP Number : none Site Ref Domes Number : none Differential Components from GPS Mark to Site Reference (ITRS) dx (m) : (m) dy (m) : (m) dz (m) : (m) Accuracy (mm) : (mm) Date Measured : (dd-MMM-yyyy hh:mm UT) Additional Information : (multiple lines) 5.x Monument Name : Site Ref CDP Number : (XXXX) Site Ref Domes Number : (XXXXXXXXX) Differential Components from GPS Mark to Site Reference (ITRS) dx (m) : (m) dy (m) : (m) dz (m) : (m) Accuracy (mm) : (mm) Date Measured : (dd-MMM-yyyy hh:mm UT) Additional Information : (multiple lines) 6. Frequency Standard 6.1 Standard Type : steered H-MASER Frequency : 5 MHz Effective Dates : 24-MAR-1998 Notes : reference signal from USNO Alternate Master : Clock #1, the back-up realization of UTC(USNO) : via two-way satellite time transfer; : calibration of clock offset to be established : later 6.x Standard Type : (H-MASER/CESIUM/QUARTZ/INTERNAL/RUBIDIUM) Frequency : Effective Dates : (dd-MMM-yyyy - dd-MMM-yyyy) Notes : (multiple lines) 7. Collocation Information 7.1 Instrumentation Type : none Status : Effective Dates : Notes : 7.x Instrumentation Type : (DORIS/GLONASS/PRARE/SLR/VLBI) Status : (PERMANENT/MOBILE) Effective Dates : (dd-MMM-yyyy - dd-MMM-yyyy) Notes : (multiple lines) 8. Meteorological Instrumentation 8.1 Humidity Sensor Model : Manufacturer : Data Frequency : Accuracy (% rel h) : Effective Dates : (dd-MMM-yyyy - dd-MMM-yyyy) Notes : (multiple lines) 8.2 Pressure Sensor Model : Manufacturer : Data Frequency : Accuracy (mbar) : Height Diff to GPS (m) : Effective Dates : (dd-MMM-yyyy - dd-MMM-yyyy) Notes : (multiple lines) 8.3 Temperature Sensor Model : Manufacturer : Data Frequency : Accuracy (deg C) : Effective Dates : (dd-MMM-yyyy - dd-MMM-yyyy) Notes : (multiple lines) 8.4 Water Vapor Radiometer : none Manufacturer : Distance to GPS (m) : (m) Elev Diff to GPS (m) : (m) Effective Dates : (dd-MMM-yyyy - dd-MMM-yyyy) Notes : (multiple lines) 8.5 Other Instrumentation : The USNO Alternate Master Clock is located in : the same building as this GPS receiver. The : differential time offset between the Alternate : Master Clock and the GPS antenna will be : monitored and may be used to calibrate the : receiver clock time directly to UTC(AMC). 9. On-Site, Point of Contact Agency Information Agency : U.S. Naval Observatory, Alternate Master Clock Mailing Address : USNO/AMC : 400 O'Malley Ave, Suite 44 : Falcon AFB, CO 80912-4044 Primary Contact Contact Name : Bill Bollwerk Telephone (primary) : 719-567-6740 Telephone (secondary) : 719-567-6763 Fax : E-mail : bill@tycho.usnogps.navy.mil Secondary Contact Contact Name : Paul Wheeler (USNO) Telephone (primary) : 202-762-1581 Telephone (secondary) : Fax : E-mail : paul@tsee2.usno.navy.mil Additional Information : Regional Data Center is NOAA GODC Regional Data Center Contact Contact Name : Linda Nussear (NOAA) Telephone (primary) : 301-713-2852 Telephone (secondary) : Fax : 301-713-4475 E-mail : linda@gracie.grdl.noaa.gov 10. Responsible Agency (if different from 9.) Agency : (same as above in 9.) 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) 11. More Information 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 : (multiple lines) Antenna Graphics with Dimensions TurboRogue: DORNE MARGOLIN T ----- / + \ <-- 0.128 L2 | + | <-- 0.110 L1 +--------------------------------------------------+ <-- 0.102 TCR | | | | | | | | +-+--------------------------------------------------+-+ <-- 0.038 +-------------------+-------------+--------------------+ <-- 0.035 BCR | | =| | +------x------+ <-- 0.000 ARP <-- 0.381 --> 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