Top of the morning to ya

I got a problem with "locking my card" to a specific channel. I've tried the airodump-ng -c 11 command, airmon-ng start wlan0 11, I've tried to use the command iwconfig wlan0 channel 11......

None of the above will work. Isn't that weird? does anyone have a solution to that problem of mine?

The wlan card is a Linksys WMP54GR.