try subprocess run

transmit.py

@@ -545,7 +545,24 @@ if __name__ == "__main__":
 									system("gen_packets -o /home/pi/CubeSatSim/telem.wav /home/pi/CubeSatSim/t.txt -r 48000 > /dev/null 2>&1 && cat /home/pi/CubeSatSim/telem.wav | csdr convert_i16_f | csdr gain_ff 7000 | csdr convert_f_samplerf 20833 | sudo /home/pi/rpitx/rpitx -i- -m RF -f " + tx + "e3 > /dev/null 2>&1")
 							else:
 								#system("timeout 3 sudo /home/pi/rpitx/rpitx -i- -m RF -f " + tx + "e3")
-								system("sudo -c 'timeout 3 sudo /home/pi/rpitx/rpitx -i- -m RF -f 434.9e3' pi")								
+#								system("su -c 'timeout 3 sudo /home/pi/rpitx/rpitx -i- -m RF -f 434.9e3' pi")	
+
+
+								query = ["su", "-c", "'timeout",  "3", "sudo", "/home/pi/rpitx/rpitx", "-i-", "-m", "RF", "-f", "434.9e3'", "pi"]
+								try:
+									result = subprocess.run(query, capture_output=True, text=True, check=True)
+									print(f"Command run was: {query}")
+#									gpsd_status = result.stdout.strip()
+									print(f"Output of the command (stdout): {gpsd_status}")
+								except subprocess.CalledProcessError as e:
+							#		print(f"Command failed with return code: {e.returncode}")
+									print(f"Command run was: {e.cmd}")
+#									gpsd_status = e.stdout.strip()
+									print(f"Output of the command (stdout): {e.stdout}")
+							#		print(f"Error output of the command (stderr): {e.stderr}")
+
+
+								
 								print("Transmit carrier only since FM failure is simulated")
 						sleep(0.1)  
 #						output (ptt, 1)