diff --git a/transmit.py b/transmit.py
index 9d3342fc..45f4af1b 100644
--- a/transmit.py
+++ b/transmit.py
@@ -555,7 +555,7 @@ if __name__ == "__main__":
 				output(txLed, 0)
 				print("0")
 				rpitx = "arecord -D plughw:CARD=Loopback,DEV=1 -f S16_LE -r 48000 -c 1 | csdr convert_s16_f | csdr gain_ff 4000 | csdr convert_f_samplerf 20833 | sudo rpitx -i- -m RF -f 434900 &"
-				stop_rpitx = "sudo killall -9 rpitx && sudo killall -9 arecord"
+				stop_rpitx = "sudo killall -9 rpitx && sudo killall -9 arecord && sudo rpitx -m RF -f 434.9e3"
 				system(stop_rpitx)
 				while (True):
 					if (txc):