diff --git a/direwolf/direwolf-pacsatsim-loopback.conf b/direwolf/direwolf-pacsatsim-loopback.conf
index e96bd980..1c74a18c 100644
--- a/direwolf/direwolf-pacsatsim-loopback.conf
+++ b/direwolf/direwolf-pacsatsim-loopback.conf
@@ -3,6 +3,16 @@ PTT GPIO -20
 MYCALL AMSAT-12
 CHANNEL 0
 MODEM 1200
-FULLDUP ON
-TXDELAY 15
+##FULLDUP ON
+##TXDELAY 15
 #FIX_BITS 1 AX25
+
+#
+DWAIT 0
+SLOTTIME 10
+PERSIST 63
+TXDELAY 1000
+#TXDELAY 100
+TXTAIL 10
+#TXTAIL 1
+FULLDUP OFF