Index: /trunk/BNC/src/bncsp3.cpp
===================================================================
--- /trunk/BNC/src/bncsp3.cpp	(revision 10127)
+++ /trunk/BNC/src/bncsp3.cpp	(revision 10128)
@@ -222,5 +222,6 @@
 
     // Simple Check - clock valid
-    if (sp3Sat->_clk == 999999.999999) {
+    if (sp3Sat->_clk == 999999.999999 ||
+        sp3Sat->_clk == 0.0) {
       sp3Sat->_clkValid = false;
       sp3Sat->_clk      = 0.0;