diff --git a/direwolf/direwolf-pacsatsim-loopback.conf b/direwolf/direwolf-pacsatsim-loopback.conf
index 3fc85671..581d30cb 100644
--- a/direwolf/direwolf-pacsatsim-loopback.conf
+++ b/direwolf/direwolf-pacsatsim-loopback.conf
@@ -1,6 +1,6 @@
 ADEVICE plughw:CARD=Loopback,DEV=1 plughw:CARD=Loopback,DEV=1
 #PTT GPIO 20  
-MYCALL AMSAT
+MYCALL AMSAT-12
 CHANNEL 0
 MODEM 1200
 FULLDUP OFF