diff --git a/rpitx.py b/rpitx.py
index dbf0c363..c588d018 100644
--- a/rpitx.py
+++ b/rpitx.py
@@ -431,6 +431,8 @@ if __name__ == "__main__":
 			output(pd, 1)
 			output(ptt, 1)			
 			print("AFSK")
+			while True:
+				sleep(0.1)
 			while True:
 				try:
 					f = open("/home/pi/CubeSatSim/ready")