diff --git a/rpitx.py b/rpitx.py
index 1cadee16..5c9a5029 100644
--- a/rpitx.py
+++ b/rpitx.py
@@ -6,26 +6,36 @@ import time
 import os
 
 GPIO.setmode(GPIO.BCM)
-GPIO.setup(26, GPIO.IN, pull_up_down=GPIO.PUD_UP)
+GPIO.setup(27, GPIO.IN, pull_up_down=GPIO.PUD_UP)
 GPIO.setup(12, GPIO.IN, pull_up_down=GPIO.PUD_UP)
+transmit = False
 if GPIO.input(12) == False:
-	powerPin = 16
-else:
-	powerPin = 17
-GPIO.setwarnings(False)
-GPIO.setup(powerPin, GPIO.OUT)
-GPIO.output(powerPin, 1);	
+	transmit = True
+if GPIO.input(27) == False;
+	transmit = True
 
-while (True):
-	time.sleep(1)
-	GPIO.wait_for_edge(26, GPIO.FALLING)
+print(transmit)
 
-	done = False;
-	time.sleep(1)
-	if GPIO.input(26):
-		print("sudo reboot -h now")
-		GPIO.setwarnings(False)
-		GPIO.setup(powerPin, GPIO.OUT)
-		GPIO.output(powerPin, 0);		
-		subprocess.call(['reboot', '-h', 'now'], shell=False)
-	GPIO.output(powerPin, 0);
+file = open("/home/pi/CubeSatSim/sim.cfg")
+callsign = file.readline().split(" ")[0]
+print(callsign)
+
+if __name__ == "__main__":
+#    print(f"Arguments count: {len(sys.argv)}")
+#    for i, arg in enumerate(sys.argv):
+#        print(f"Argument {i:>6}: {arg}")
+#
+    print 'Length: ', len(sys.argv)
+    
+    if (len(sys.argv)) > 1:
+#        print("There are arguments!")
+        if (('a' == sys.argv[1]) or ('afsk' in sys.argv[1])):
+            print("AFSK") 
+#	    os.system("sleep infinity")
+        elif (('b' == sys.argv[1]) or ('bpsk' in sys.argv[1])):
+            print("BPSK")
+#	    os.system("sudo nc -l 8080 | csdr convert_i16_f | csdr fir_interpolate_cc 2 | csdr dsb_fc | csdr bandpass_fir_fft_cc 0.002 0.06 0.01 | csdr fastagc_ff | sudo /home/pi/rpitx/sendiq -i /dev/stdin -s 96000 -f 434.8945e6 -t float")
+	else
+            mode = FSK
+            print("FSK") 
+#	    os.system("sudo nc -l 8080 | csdr convert_i16_f | csdr gain_ff 7000 | csdr convert_f_samplerf 20833 | sudo /home/pi/rpitx/rpitx -i- -m RF -f 434.897e3")