NSSP Site Information Form
     International GPS Service for Geodynamics


0.   Form

     Prepared by (full name)  : David A. Stowers
     Date Prepared            : 29-JUN-1999
     Report Type              : UPDATE
     Prepared Using           : vi


1.   Site Identification of the GPS Monument

     Site Name                : Yerevan (National Survey Seismic
                              : Protection)
     Four Character ID        : NSSP
     Monument Inscription     : none
     IERS DOMES Number        : 12312M001
     CDP Number               : none
     Date Installed           : 15-Jul-1996
     Geologic Characteristic  :
       Bedrock Type           : Balsaltic lava flow
       Bedrock Condition      :
       Fracture Spacing       :
       Notes                  :
     Additional Information   : 5/8 " bolt set in a concrete
                              : pillar UNAVCO Leveling mount
                              : used.


2.   Site Location Information

     City or Town             : Yerevan
     State or Province        : Armenia
     Country                  : Republic of Armenia
     Tectonic Plate           : Anotolian Block
       X coordinate (m)       : 3478646.82
       Y coordinate (m)       : 3418805.76
       Z coordinate (m)       : 4097987.13
       Latitude (deg)         : 40.2265
       Longitude (deg)        : 44.5031
       Elevation (m)          : 1167
     Additional Information   : Alignment: True North. Site is
                              : 100m from the NSSP facility.


3.   GPS Receiver Information

3.1  Receiver Type            : ROGUE SNR-8000
     Serial Number            : T111
     Firmware Version         : 3.2
     Date Installed           : 10-Oct-1997
     Date Removed             :
     Additional Information   :

3.2  Receiver Type            : ROGUE SNR-8000
     Serial Number            : T111
     Firmware Version         : 3.2.32.8
     Date Installed           : 21-May-1999
     Date Removed             :
     Additional Information   :


4.   GPS Antenna Information

4.1  Antenna Type             : AOAD/M_T
     Serial Number            : 232
     Antenna Height (m)       : 0.07924
     Antenna Reference Point  : ARP
     Degree Offset from North : 4 west of mag North
     Antenna Radome Type      : Regal Plastics Chokering Raydome
     Date Installed           : 10-Oct-1997
     Date Removed             :
     Additional Information   : Cable split with a grounded
                              : Huber-Shunner protector.  N-type
                              : connectors used.  UNAVCO
                              : leveling mount.


5.   Local Site Ties

5.1  Monument Name            :
     Site Ref Domes Number    :
     Differential Components from GPS Mark to Site Reference (ITRS)
       dx (m)                 : 0
       dy (m)                 : 0
       dz (m)                 : 0
     Accuracy (mm)            :
     Date Measured            :
     Additional Information   :


6.   Frequency Standard

6.1  Standard Type            : INTERNAL
       Frequency              :
       Effective Dates        : (dd-MMM-yyyy - dd-MMM-yyyy)
       Notes                  : (multiple lines)

6.x  Standard Type            : (H-MASER/CESIUM/QUARTZ/INTERNAL/RUBIDIUM)
       Frequency              :
       Effective Dates        : (dd-MMM-yyyy - dd-MMM-yyyy)
       Notes                  : (multiple lines)


8.   Meteorological Instrumentation

8.1  Humidity Sensor Model    : none
       Manufacturer           :
       Data Frequency         :
       Accuracy (% rel h)     :
       Date Installed         :
       Date Removed           :
       Notes                  :

8.2  Pressure Sensor Model    : none
       Data Frequency         :
       Accuracy (mbar)        :
       Height Diff to GPS (m) :
       Date Installed         :
       Date Removed           :
       Notes                  :

8.3  Temperature Sensor Model : none
       Manufacturer           :
       Data Frequency         :
       Accuracy (deg C)       :
       Date Installed         :
       Date Removed           :
       Notes                  :

8.4  Water Vapor Radiometer   : none
       Manufacturer           :
       Distance to GPS (m)    :
       Elev Diff to GPS (m)   :
       Date Installed         :
       Date Removed           :
       Notes                  :

8.5  Other Instrumentation    :


9.   On-Site, Point of Contact Agency Information

     Agency                   : National Survey for Seismic
                              : Protection
     Mailing Address          : Davidashen
                              : Massiv IV
                              : Yerevan,
                              : Armenia 375054
     Primary Contact          : Suren Harutyunyan
       Telephone (primary)    : +7-8852-282811
       Telephone (secondary)  :
       Fax                    : +374-2-151108
       E-mail                 : suren@wegener.mit.edu (temporary)
     Secondary Contact
       Contact Name           : Serguei Balassanian
       Telephone (primary)    : 374-2-282811
       Telephone (secondary)  :
       Fax                    : 374-2-151108
       E-mail                 : presidnt@nssp.r.am
     Additional Information   :


10.  Responsible Agency (if different from 9.)

     Agency                   : JPL
     Mailing Address          : 4800 Oak Grove Drive
                              : Pasadena, CA
                              : USA   91109
     Primary Contact
       Contact Name           : David A. Stowers
       Telephone (primary)    : 818-354-7055
       Telephone (secondary)  : 818-354-2950
       Fax                    : 818-393-4965
       E-mail                 : dstowers@jpl.nasa.gov
     Secondary Contact
       Contact Name           : Network Engineer/UNAVCO
       Telephone (primary)    : 303-497-8000
       Telephone (secondary
       Fax                    : 303-497-8028
       E-mail                 : ruud or kfeaux @unavco.ucar.edu
     Additional Information   : Oivind Ruud (x8030) or Karl Feaux (x8037)


11.  More Information

     URL for More Information : www.unavco.ucar.edu/projects/
                              : continuous/reports/eastmed96/
     Hardcopy on File         :
       Site Map               :
       Site Diagram           :
       Horizon Mask           :
       Monument Description   :
       Site Pictures          :
     Additional Information   :
     Antenna Graphics with Dimensions


TurboRogue: AOAD/M_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