diff --git a/test/test_chat_text.py b/test/test_chat_text.py
index aacdf2a4..c5db2c8d 100644
--- a/test/test_chat_text.py
+++ b/test/test_chat_text.py
@@ -175,7 +175,7 @@ def test_chat_text(
                 STATIONS[0],
                 STATIONS[1],
                 messages[message_no],
-                freedv_mode == "datac3",  # low bandwidth mode
+                freedv_mode == "datac3",  # == low bandwidth mode
                 tmp_path,
             ),
             daemon=True,
@@ -189,7 +189,7 @@ def test_chat_text(
                 STATIONS[1],
                 STATIONS[0],
                 messages[message_no],
-                freedv_mode == "datac3",  # low bandwidth mode
+                freedv_mode == "datac3",  # == low bandwidth mode
                 tmp_path,
             ),
             daemon=True,
diff --git a/test/util_chat_text_1.py b/test/util_chat_text_1.py
index 329b7bcd..cb0c175d 100644
--- a/test/util_chat_text_1.py
+++ b/test/util_chat_text_1.py
@@ -100,7 +100,30 @@ def t_highsnr_arq_short_station1(
         # log.info("S1 TX: ", frames=t_frames)
         for item in t_frames:
             frametype = int.from_bytes(item[:1], "big")  # type: ignore
-            log.info("S1 TX: ", TX=frametype)
+            log.info("S1 TX: ", mode=static.FRAME_TYPE(frametype).name)
+
+            if (
+                static.LOW_BANDWIDTH_MODE
+                and frametype == static.FRAME_TYPE.ARQ_DC_OPEN_W.value
+            ):
+                mesg = (
+                    "enqueue_frame_for_tx: Low BW global "
+                    "but DC Open narrow frame NOT chosen."
+                )
+                # Low bandwidth data type, wide bandwidth frame type
+                log.error(mesg)
+                assert False, mesg
+            if (
+                not static.LOW_BANDWIDTH_MODE
+                and frametype == static.FRAME_TYPE.ARQ_DC_OPEN_N.value
+            ):
+                mesg = (
+                    "enqueue_frame_for_tx: High BW global "
+                    "but DC Open wide frame NOT chosen."
+                )
+                # High bandwidth data type, low bandwidth frame type
+                log.error(mesg)
+                assert False, mesg
 
         # Apologies for the Python "magic." "orig_func" is a pointer to the
         # original function captured before this one was put in place.
diff --git a/test/util_chat_text_2.py b/test/util_chat_text_2.py
index 2b9285e8..92a000d9 100644
--- a/test/util_chat_text_2.py
+++ b/test/util_chat_text_2.py
@@ -146,7 +146,7 @@ def t_highsnr_arq_short_station2(
     timeout = time.time() + 20
     while '"arq":"session","status":"close"' not in str(sock.SOCKET_QUEUE.queue):
         if time.time() > timeout:
-            log.error("station2", TIMEOUT=True)
+            log.warning("station2", TIMEOUT=True)
             break
         time.sleep(0.5)
     log.info("station2", arq_state=pformat(static.ARQ_STATE))
@@ -158,4 +158,4 @@ def t_highsnr_arq_short_station2(
     assert '"arq":"transmission","status":"received"' in str(sock.SOCKET_QUEUE.queue)
 
     assert '"arq":"session","status":"close"' in str(sock.SOCKET_QUEUE.queue)
-    log.error("station2: Exiting!")
+    log.warning("station2: Exiting!")
diff --git a/tnc/data_handler.py b/tnc/data_handler.py
index 37996437..c6a8dd04 100644
--- a/tnc/data_handler.py
+++ b/tnc/data_handler.py
@@ -1561,7 +1561,7 @@ class DATA:
         # Update data_channel timestamp
         self.data_channel_last_received = int(time.time())
 
-        if static.LOW_BANDWIDTH_MODE and mode == 255:
+        if static.LOW_BANDWIDTH_MODE:
             frametype = bytes([227])
             self.log.debug("[TNC] Requesting low bandwidth mode")