Index: trunk/BNC/src/bncephuser.cpp
===================================================================
--- trunk/BNC/src/bncephuser.cpp	(revision 9928)
+++ trunk/BNC/src/bncephuser.cpp	(revision 9929)
@@ -185,5 +185,9 @@
 //
 ////////////////////////////////////////////////////////////////////////////
-void bncEphUser::checkEphemeris(t_eph* eph, bool realTime) {cout << "\ncheckEphemeris ";
+void bncEphUser::checkEphemeris(t_eph* eph, bool realTime) {
+
+  if (eph->prn().system() != 'R' || eph->prn().system() != 'G')
+    return;
+  cout << "\ncheckEphemeris ";
 
   if (!eph) {