diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index d2bc5d59..b218dce2 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -3429,7 +3429,8 @@ bool TimerHandler0(struct repeating_timer *t) {
 //  Serial.print(wav_position);
 //  Serial.print(" ");
   while ((micros() - micro_timer2) < 832)	{ } 
-  Serial.println(micros() - micro_timer2);	  
+  if ((micros() - micro_timer2) > 833)	  
+    Serial.println(micros() - micro_timer2);	  
   micro_timer2 = micros();	  	
   if (buffer[wav_position++] > 0) {	  
     digitalWrite(BPSK_CONTROL_A, HIGH);