Oporcon About

OPen source ORienteering electronic CONtrol.

This is a DIY system for electronic timing  for use in Radio Orienteering competitions, but should be adaptable for other sorts of Sport or Orienteering. All the  designs on this site are developed from the original  OPORCON system published by Stipe Predanić. Please visit this site for a detailed explanation of how this simple  but brilliant system works.

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