Index: trunk/BNC/combination/bnccomb.cpp
===================================================================
--- trunk/BNC/combination/bnccomb.cpp	(revision 3015)
+++ trunk/BNC/combination/bnccomb.cpp	(revision 3016)
@@ -360,7 +360,7 @@
 
   newCorr->iod = lastEph->IOD();
-  newCorr->rao    += dRAO;
-  newCorr->dotRao += dDotRAO;
-  newCorr->dClk   += dC;
+  newCorr->rao    -= dRAO;
+  newCorr->dotRao -= dDotRAO;
+  newCorr->dClk   -= dC;
 
   QString msg = "switch " + newCorr->prn