diff --git a/rpitx.py b/rpitx.py
index faa7ff23..60743990 100644
--- a/rpitx.py
+++ b/rpitx.py
@@ -102,7 +102,7 @@ if __name__ == "__main__":
 				file = open("/home/pi/CubeSatSim/t.txt")
 				file.close()
 			except:
-				system("echo '" + callsign + ">APCSS:hi hi 100 199 199 199 298 299 299 278 380 350 300 300 439 400 400 400 500 500 500 500 600 600 600 650' > /home/pi/CubeSatSim/t.txt && echo 'AMSAT>APCSS:010101/hi hi ' >> /home/pi/CubeSatSim/t.txt")
+				system("echo '" + callsign + "-11>APCSS:hi hi 100 199 199 199 298 299 299 278 380 350 300 300 439 400 400 400 500 500 500 500 600 600 600 650' > /home/pi/CubeSatSim/t.txt && echo 'AMSAT>APCSS:010101/hi hi ' >> /home/pi/CubeSatSim/t.txt")
 			for x in range(5):
 				GPIO.output(txLed, txLedOn)
 				if (debug_mode == 1):