1 files changed, 2 insertions, 0 deletions
diff --git a/app/ref.c b/app/ref.c
index a131fda..6d335ce 100644
--- a/app/ref.c
+++ b/app/ref.c
@@ -375,10 +375,12 @@ void ref_dispatch (uint64_t edge, const char *src)
 
 
 
+#ifdef CHATTY_PLLS
   printf ("REF PLL: obs_f=%9d delta_phi=%5d f=%9d %s\r\n",
           (int) obs_freq,
           (int) obs_phase,
           (int) ref_freq, src);
+#endif
 
 
   /*Ignore bogus observations*/