EEE 802.11 ESSID:"AirPort"
Mode:Managed Frequency:5.5 GHz Access Point: 28:CF:DA:B0:F8:62
Bit Rate=6 Mb/s Tx-Power=22 dBm
22dBm c’est peut être un poil faible
ça a à voir avec le crda
cat /etc/default/crda
# Set REGDOMAIN to a ISO/IEC 3166-1 alpha2 country code so that iw(8) may set
# the initial regulatory domain setting for IEEE 802.11 devices which operate
# on this system.
#
# Governments assert the right to regulate usage of radio spectrum within
# their respective territories so make sure you select a ISO/IEC 3166-1 alpha2
# country code suitable for your location or you may infringe on local
# legislature. See `/usr/share/zoneinfo/zone.tab' for a table of timezone
# descriptions containing ISO/IEC 3166-1 alpha2 country codes.
REGDOMAIN=FR