Index: /trunk/BNC/RTCM3/ephemeris.cpp
===================================================================
--- /trunk/BNC/RTCM3/ephemeris.cpp	(revision 3666)
+++ /trunk/BNC/RTCM3/ephemeris.cpp	(revision 3667)
@@ -822,7 +822,7 @@
 
       if (_prn.at(0) != 'G') {
-        _prn = QString("G%1").arg(_prn.toInt(), 2, QChar('0'));
-      }
-
+        _prn = QString("G%1").arg(_prn.toInt(), 2, 10, QLatin1Char('0'));
+      }
+   
       if      (year <  80) {
         year += 2000;