Hey, awesome for you that it works. I get an error trying the commands you posted, with the same WiFi ACH card. I get the error:
"Error for wireless request "Set Mode" (8B06) :
SET failed on device wlan0 ; Operation not permitted."
after entering the commands:
ip link set wlan0 down
iwconfig wlan0 mode monitor
Any ideas?
UPDATE: Okay seems it didn't work because I tested in a VM. Tried on bare metal and that works. However 5GHz does not seem to work.