| Pictured on the right are some typical applications
      for professional GPS equipment.
 
 The variety among the GPS receivers requires an intelligent DAB-DGPS
      receiver design, allowing to cope with the different command protocols and
      power supplies given by the GPS devices.
 
 
 The DAB-DGPS receivers used within the Belgian WALCORS network are based
      upon our CDR20 receiver board
      concept. Key functionality of this receiver is software-defined. Thus new
      features (like RTK support) or implementing different command protocols
      are just a matter of firmware. The hardware remaining unchanged, choosing
      a CDR20-based receiver is a safe investment even if your DGPS environment
      changes.
 
 
 Tools supplied with the CDR20 receiver allow service monitoring and delay measurements, which is particularly important for Differential
      GPS. There is no need to buy separate data service analysis tools.
 
 
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