PRDS Site Information Form
     International GPS Service for Geodynamics


0.   Form

     Prepared by (full name)  : Peter Taylor
     Date Prepared            : 24-FEB-1999
     Report Type              : UPDATE
     Prepared Using           :


1.   Site Identification of the GPS Monument

     Site Name                : PRIDDIS
     Four Character ID        : PRDS
     Monument Inscription     : 756047
     IERS DOMES Number        : 40124M001
     CDP Number               : n/a
     Date Installed           : 25-JUL-1992
     Geologic Characteristic  : unconsolidated sediment
       Bedrock Type           :
       Bedrock Condition      :
       Fracture Spacing       :
       Notes                  :
     Additional Information   : The GPS reference mark consists of a brass plate
                              : with a forced centring stainless steel bolt
                              : embedded on top of a 40 cm in diameter concrete
                              : pier,extending into soil to a depth of 3 meters
                              : and protruding 1.5 m above ground level.


2.   Site Location Information

     City or Town             : Calgary
     State or Province        : Alberta
     Country                  : Canada
     Tectonic Plate           : North American
     Approximate Position
       X coordinate (m)       : -1659602.829
       Y coordinate (m)       : -3676725.754
       Z coordinate (m)       :  4925493.591
       Latitude (deg)         :   50.8713 N
       Longitude (deg)        :  114.2935 W
       Elevation (m)          : 1247.94
     Additional Information   : Located at the Dominion Observatory in Priddis,
                              : on the outskirt of Calgary, Alberta.


3.   GPS Receiver Information

3.1  Receiver Type            : ROGUE SNR-12 RM
     Serial Number            : 235
     Firmware Version         : Turbo 3.2.32.5X
     Date Installed           : 07-JAN-1997 00:00 UT
     Date Removed             : 23-JUL-1997 00:00 UT
     Additional Information   :

3.2  Receiver Type            : ROGUE SNR-8000
     Serial Number            : 226
     Firmware Version         : Turbo 3.2.32.5X
     Date Installed           : 23-JUL-1997 00:00 UT
     Date Removed             :
     Additional Information   :


4.   GPS Antenna Information

4.1  Antenna Type             : DORNE MARGOLIN T
     Serial Number            : 171
     Antenna Height (m)       : 0.100
     Antenna Reference Point  : ARP
     Degree Offset from North :
     Antenna Radome Type      :
     Date Installed           : 07-JAN-1997 00:00 UT
     Date Removed             :
     Additional Information   :


5.   Local Site Ties          : n/a


6.   Frequency Standard

6.1  Standard Type            : RUBIDIUM
       Frequency              :
       Effective Dates        : 07-JAN-1997 - dd-MMM-yyyy
       Notes                  :


7.   Collocation Information  : None

7.x  Instrumentation Type     : None
       Status                 :
       Effective Dates        :
       Notes                  :


8.   Meteorological Instrumentation

8.1  Humidity Sensor Model    : HMP-35A
       Manufacturer           : VAISALA
       Data Frequency         : 15 min
       Accuracy (% rel h)     : 2 %
       Effective Dates        : 05-JUN-1996 - dd-MMM-yyy)
       Notes                  : Sensor elevated 6 metres above ground level.

8.2  Pressure Sensor Model    : PTB-100A
       Manufacturer           : VAISALA
       Data Frequency         : 15 min
       Accuracy (mbar)        : 0.1 mb
       Height Diff to GPS (m) : 0.0 m
       Effective Dates        : 05-JUN-1996 - dd-MMM-yyyy
       Notes                  : Sensor readings compensated for temperature,
                              : non-linearity, calibration and height difference
                              : to GPS antenna.

8.3  Temperature Sensor Model : YSI 44212
       Manufacturer           : YSI
       Data Frequency         : 15 min
       Accuracy (deg C)       : 0.2 Deg C
       Effective Dates        : 05-JUN-1996 - dd-MMM-yyyy
       Notes                  : Sensor elevated 6 metres above ground level.

8.4  Other Instrumentation    : n/a


9.   On-Site, Point of Contact Agency Information

     Agency                   : Geodetic Survey of Canada
     Mailing Address          : 615 Booth St., Ottawa, Ontario
                              : CANADA, K1A 0E9
     Primary Contact
       Contact Name           : Mark Caissy
       Telephone (primary)    : 613-995-4024
       Telephone (secondary)  :
       Fax                    : 613-995-3215
       E-mail                 : caissy@geod.nrcan.gc.ca

     Secondary Contact
       Contact Name           : Peter Taylor
       Telephone (primary)    : 613-992-2106
       Telephone (secondary)  : 613-992-1292
       Fax                    : 613-995-3215
       E-mail                 : peter.taylor@geod.nrcan.gc.ca
     Additional Information   :


10.  Responsible Agency       : same as 9. above.


11.  More Information

     URL for More Information :
     Hardcopy on File
       Site Map               : yes
       Site Diagram           :
       Horizon Mask           : yes
       Monument Description   : yes
       Site Pictures          : yes
     Additional Information   :
     Antenna Graphics with Dimensions


    ANTENNA CONFIGURATION ON SITE SINCE 07-JAN-1997


    Type: DORNE MARGOLIN T

                                    ---
     L2 Phase Center =>         /    +    \             <---------------+
     L1 Phase Center =>        |     +     |            <---------+     |
              +----------------------------------------------+    |     |
              |                                              |    |     |
              |                                              |    |     |
              |                                              |    |     |
              |                                              |    |     |
             ==================================================   |     |
                               |           |                      |     |
                               |    +-+    |                      |   0.228m
   Antenna Ref. Point (ARP) => +====| |====+   <--+               |     |
                               |           |      |             0.210m  |
                               |           |      |               |     |
                               |           |      |               |     |
                      Mount => |           |    0.100m            |     |
                               |           |      |               |     |
                               |           |      |               |     |
                               |    +-+    |      |               |     |
 Monument =>  +----------------+====| |====+-----------------+ <--+-----+
 Ref. Point   |                                              |
              |                                              |
              |                                              |
              |               Concrete pillar                |
              |                                              |
              |                                              |
              |                                              |