diff --git a/tools/custom_mode_tests/over_the_air_mode_test.py b/tools/custom_mode_tests/over_the_air_mode_test.py
index dba490fe..833e022d 100644
--- a/tools/custom_mode_tests/over_the_air_mode_test.py
+++ b/tools/custom_mode_tests/over_the_air_mode_test.py
@@ -52,8 +52,14 @@ class FreeDV:
 
 # Usage example
 if __name__ == "__main__":
-    MODE = FREEDV_MODE.datac13
-    RX_MODE = FREEDV_MODE.data_ofdm_200
+
+    # geht
+    MODE = FREEDV_MODE.data_ofdm_250
+    RX_MODE = FREEDV_MODE.datac4
+
+    # fail
+    #MODE = FREEDV_MODE.datac4
+    #RX_MODE = FREEDV_MODE.data_ofdm_250
 
     FRAMES = 1