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  State of Idaho Military Division
  EMO1 - Survey Grade Reference Station Boise Idaho
       
       
  Cors Checklist    EMO1  
Boise, Idaho
Nick Nydegger
GIS Systems Manager
State of Idaho Military Division
Idaho Army National Guard
4715 S. Byrd Street
Boise, ID 83705-8095
208-272-4182 Office
208-954-6257 Cell
208-272-4169 Fax
nicholas.c.nydegger.nfg@mail.mil
   
       
  B. Monument - The antenna is mounted to large boiler chimney that is located through a building. Building was built in the 1950’s and has recently been remodeled. The building is an old warehouse with concrete loading docks on two sides and a heavy concrete floor. The top of the chimney is approximately 65” X 65” with 16” thick sides. The boiler has been removed and the chimney is in good shape. The chimney extends through the roof approximately 20 feet and is the highest element on the roof. The antenna is approximately 50 feet from ground level. Estimated weight of the chimney is 15 – 20 tons not including the concrete foundation. The antennae is mounted to the north side top of the chimney using a SECO Masonry Adapter and a SECO Stainless Monument leveler.  The Monument was leveled in all directions at installation.

B.1 Stability – This site has the best set up for stability. The base is protected and located within a 200’ X 100’ building. This existing site has long since done all the settling it is going to do.
   
       
     
  Figure 1.  General Location    
       
       
     
  Figure 2.  Location Chimney / Antenna    
       
       
  B.2 Location, Obstruction and Radio Frequency Environment.

B.2a location – Good open area highest element in vicinity. Tree nearby will require topping over the course of the lifespan. All other items clear. Note old satellite antennae on roof is disconnected and slated for removal. No obstruction at this time 0-90 degrees.  Chimney mount location protects most of the antenna from roof multi-path.

B.2c Radio Frequency Environment – No known radio frequency interference within 100 feet. Normal interference from urban environment. Located on southern portion of airport. Radar station located 5,317 feet away.

B.3 Ground-based Monument – NA B.4 Roof-Based Monument

B.4a - The antenna is mounted to large boiler chimney that is located through a building. Building was built in the 1950’s and has recently been remodeled. The building is an old warehouse with concrete loading docks on two sides and a heavy concrete floor. The top of the chimney is approximately 65” X 65” with 16” thick sides. The boiler has been removed and the chimney is in good shape. The chimney extends through the roof approximately 20 feet and is the highest element on the roof. The antenna is approximately 50 feet from ground level. Estimated weight of the chimney is 15 – 20 tons not including the concreted foundation (see Figure 2). This chimney is particularly robust. The antennae is mounted to the north side top of the chimney using a SECO Masonry Adapter and a SECO Stainless Monument leveler.  The Monument was leveled in all directions at installation.

B.5 Attaching Antenna, Mount and Monument - The antennae is mounted to the north side top of the chimney using a SECO Masonry Adapter and a SECO Stainless Monument leveler.  The Monument was leveled in all directions at installation.  The SECO adapter allows removal and re-installation with little or no adjustment.

B.6 Orienting Antenna – The number 1 on the antenna was oriented to true north.  The manufacturer’s specifications do not require the northern orientation as with the older systems.

B.7 – Antenna Cable – Cable is directly attached to the antenna and is not under tension. It has been looped and tied to the mounting frame. The cable is tied to support throughout the run.

C. Equipment

C.1 Antenna – The antenna is a Trimble Zephyr Geodetic 2 Antenna. This is NGS model TRM57971. The serial is 1141138122 and part number is 57971-00 DC5140. Antenna was inspected 01/03/2012.  There is no Radome.

C.2 Yes, The antenna is a Trimble Zephyr Geodetic 2 Antenna. This is NGS model TRM57971. The serial is 1141138122 and part number is 57971-00 DC5140. Antenna was inspected 01/03/2012.  There is no Radome.

C.3 Receiver, Settings, and Power Supply - The receiver is a Trimble NetR9 serial 5130K77180 and part number 67668-20. It is connected to an APC Smart UPS 3000XLM providing in excess of 30 minutes backup power. Elevation cutoff angle is 0 degrees. Recording at 1 second sampling interval. This unit logs hourly files and tracks all satellites.

D. Communications and Data Archiving - The site data is accessible through the web at http://emomil.state.id.us  24 hrs a day seven days a week. Rinex-2 files are transferred to the web site at the end of each hour. Data will be stored online for 120 days. Rinex files are located at:  ftp://emomil.state.id.us/GIS/GpsBaseFilesNetR9/Rinex.  A web page for custom access is located at: http://emomil.state.id.us/RinexSurvey.aspx .


E. Site Metadataa
   
       
       
     
  Figure 3  EMO1_Monu11    
       
       
     
  Figure 4  EMO1_Monu22    
       
       
     
  Figure 5  EMO1_Monu33    
       
       
     
  Figure 6  EMO1_Monu44    
       
       
     
  Figure 7  EMO1_Ant_Monuu    
       
       
     
  Figure 8  EMO1_Ant_000 (Looking North)    
       
       
     
  Figure 9  EMO1_Ant_090 (Looking East))    
       
       
     
  Figure 10  EMO1_Ant_180 (Looking South))    
       
       
     
  Figure 11  EMO1_Ant_180b  (Looking South - View 2)    
       
       
     
  Figure 12  EMO1_Ant_270_Overview     
       
       
       
       
 
 
 
 
  
GIS Systems, Environmental Management Office, IDARNG
4715 S. Byrd Street
Boise, ID 83705-8095
(208-272-4182 or 4188)
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