diff --git a/rpitx.py b/rpitx.py
index b3d79725..0cdb30dc 100644
--- a/rpitx.py
+++ b/rpitx.py
@@ -183,7 +183,7 @@ if GPIO.input(7) == False:
 else:
 	print("TXC not present")
 output(txLed, txLedOn)
-(1)
+sleep(1)
 output(txLed, txLedOff)
 
 # print(txLedOn)
@@ -252,9 +252,9 @@ if __name__ == "__main__":
 	GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi 4
 	GPIO.setup(txLed, GPIO.OUT)
 	
-	(1)
+	sleep(1)
 	
-	("echo 'hi hi de " + callsign + "' > id.txt && gen_packets -M 20 /home/pi/CubeSatSim/id.txt -o /home/pi/CubeSatSim/morse.wav -r 48000 > /dev/null 2>&1")	
+	system("echo 'hi hi de " + callsign + "' > id.txt && gen_packets -M 20 /home/pi/CubeSatSim/id.txt -o /home/pi/CubeSatSim/morse.wav -r 48000 > /dev/null 2>&1")	
 	
 #	if (mode != 'a'):
 	if (command_tx == True):	
@@ -264,10 +264,10 @@ if __name__ == "__main__":
 		sleep(0.1)
 		
 		if (txc):
-			("aplay -D hw:CARD=Headphones,DEV=0 /home/pi/CubeSatSim/morse.wav")	
+			system("aplay -D hw:CARD=Headphones,DEV=0 /home/pi/CubeSatSim/morse.wav")	
 		else:	
 			if (debug_mode == 1):
-				("echo 'hi hi de " + callsign + "' > id.txt && gen_packets -M 20 /home/pi/CubeSatSim/id.txt -o /home/pi/CubeSatSim/morse.wav -r 48000 > /dev/null 2>&1 && cat /home/pi/CubeSatSim/morse.wav | csdr convert_i16_f | csdr gain_ff 7000 | csdr convert_f_samplerf 20833 | sudo /home/pi/rpitx/rpitx -i- -m RF -f 434.9e3")
+				system("echo 'hi hi de " + callsign + "' > id.txt && gen_packets -M 20 /home/pi/CubeSatSim/id.txt -o /home/pi/CubeSatSim/morse.wav -r 48000 > /dev/null 2>&1 && cat /home/pi/CubeSatSim/morse.wav | csdr convert_i16_f | csdr gain_ff 7000 | csdr convert_f_samplerf 20833 | sudo /home/pi/rpitx/rpitx -i- -m RF -f 434.9e3")
 			else:
 				system("echo 'hi hi de " + callsign + "' > id.txt && gen_packets -M 20 /home/pi/CubeSatSim/id.txt -o /home/pi/CubeSatSim/morse.wav -r 48000 > /dev/null 2>&1 && cat /home/pi/CubeSatSim/morse.wav | csdr convert_i16_f | csdr gain_ff 7000 | csdr convert_f_samplerf 20833 | sudo /home/pi/rpitx/rpitx -i- -m RF -f 434.9e3 > /dev/null 2>&1")