Subject: [IGSMAIL-0604] Antenna Height Changed at ALGO
From: Robert Duval / NRCan
Date: Thu, 19 May 1994 5:21:43 PDT

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IGS Electronic Mail      Thu May 19  5:21:43 PDT 1994      Message Number 0604
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Author: Robert Duval / NRCan
Subject: Antenna Height Changed at ALGO

ADVISORY
========

  Site name          : ALGONQUIN      
  4 char ID          : ALGO    
  Monu inscription   : 883160  
  Domes number       : 40104M002

Please note antenna height change effective 19 May 94 (DOY 139) at 00:00 UT.
            *********************
Change of height introduced a gap in data for May 18 (DOY138) 23:38 -> 24::00 UT

 
  GPS Antenna Type       : DORNE-MARGOLIN T    
  Serial Number          : 173            
  Vertical Antenna Height: 0.100 m
  Antenna Ref. Point     : ARP = bottom of preamplifier (as per graphic)
  Date                   : effective 19-MAY-94 (00:00 UT)   

  Graphic corresponding to antenna type on site: DORNE MARGOLIN T

                        -----  
                    /     +     \              <----------- (0.128) = L2
                   |      +      |             <----------- (0.110) = L1
  +------------------------------------------------+      
  |                                                |     
  |                                                |      
  |                                                |     
  |                                                |     
+-+------------------------------------------------+-+   
+------------------+-------------+-------------------+   
                   |             |                       
                  =|     +-+     |                       
                   +=====| |=====+              <---------- (0.000) = ARP
                   |             |                            
                   |             |                       
                   |             |                       
                   |             |<-- spacer (0.100 m)     
                   |             |                       
                   |             |                       
                   |     +-+     |                         
  +----------------+=====| |=====+-----------------+ <----- (-0.100)= monument
  |                                                |          reference point
  |                                                |
  |                                                |
  |               Concrete pillar                  |
  |                                                |
  |                                                |
  |                                                | 

-- 
Robert Duval

Geodetic Survey Division               Tel:    (613) 947-2786
Natural Resources Canada (NRCan)       Fax:    (613) 995-3215
615 Booth Street                       E-mail: [email-masked]
Ottawa, Ontario
K1A 0E9

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