update for new rtl_433 binary

diff --git a/rtl_433-json-mqtt.sh b/rtl_433-json-mqtt.sh
index 93c275d..b72e6a1 100755 (executable)
--- a/rtl_433-json-mqtt.sh
+++ b/rtl_433-json-mqtt.sh
@@ -1,4 +1,4 @@
 #!/bin/sh -xe
 
-rtl_433 -G -F json -U | mosquitto_pub -t `hostname -s`/rtl433/json -l
+rtl_433 -G -F json -M utc | mosquitto_pub -t `hostname -s`/rtl433/json -l