diff --git a/tnc/data_handler.py b/tnc/data_handler.py
index a1cbecab..f53e5730 100644
--- a/tnc/data_handler.py
+++ b/tnc/data_handler.py
@@ -484,7 +484,7 @@ class DATA:
         # Transmit frame
         # TODO: Do we have to send , self.send_ident_frame(False) ?
         # self.enqueue_frame_for_tx([ack_frame, self.send_ident_frame(False)], c2_mode=FREEDV_MODE.sig1.value, copies=3, repeat_delay=0)
-        self.enqueue_frame_for_tx([ack_frame], c2_mode=FREEDV_MODE.sig1.value, copies=3, repeat_delay=0)
+        self.enqueue_frame_for_tx([ack_frame], c2_mode=FREEDV_MODE.sig1.value, copies=6, repeat_delay=0)
 
     def send_retransmit_request_frame(self, freedv) -> None:
         # check where a None is in our burst buffer and do frame+1, because lists start at 0