diff --git a/config/wifibroadcast_drone.cfg b/config/wifibroadcast_drone.cfg
index c076b7b..ac35d98 100644
--- a/config/wifibroadcast_drone.cfg
+++ b/config/wifibroadcast_drone.cfg
@@ -11,11 +11,11 @@
 [common]
 wifi_channel = 6
 wifi_region = 'FR'
-bandwidth = 40
 
 [drone_video]
 mcs_index = 3  # MCS1->3 : rafale IDR sous la periode de frame, echappe au fec_delay tunnel
 peer = 'listen://0.0.0.0:5602'
+bandwidth = 40  # Test HT40, canal 6 (2437MHz) — marge suffisante des deux côté
 
 [drone_mavlink]
 peer = 'listen://0.0.0.0:14560'