BAN - Solms

Note: replace ath0 in all examples with the device name of your WLAN card (i.e. ra0, eth2, eth3).
If you do not know your device name, execute:

root@copper:~ # cat /var/ipcop/ethernet/settings | grep BLUE_DEV
BLUE_DEV=ath0

Card detection

Restart card detection:

root@copper:~ # wlanapctrl detect

Info for graphs

The info for the graphs (TxPower, Link Quality etc.) is retrieved by using iwconfig. Unfortunately iwconfig output is different from driver to driver. Examples:

ath0      IEEE 802.11g  ESSID:"weizen_42"
          Mode:Managed  Frequency:2.472 GHz  Access Point: 00:01:02:03:04:05
          Bit Rate:48 Mb/s   Tx-Power:31 dBm   Sensitivity=0/3
          Retry:off   RTS thr:off   Fragment thr:off
          Encryption key:blubblub   Security mode:restricted
          Power Management:off
          Link Quality=38/94  Signal level=-57 dBm  Noise level=-95 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

or:

wlan0     IEEE 802.11b+/g+  ESSID:"weizen_42"  Nickname:"acx100 v0.2.0pre8"
          Mode:Managed  Frequency:2.472 GHz  Access Point: 00:01:02:03:04:05
          Bit Rate=54 Mb/s   Tx-Power=15 dBm   Sensitivity=1/3
          Retry min limit:7   RTS thr:off
          Encryption key:blublub
          Power Management:off
          Link Quality=41/100  Signal level=18/100  Noise level=0/100
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

WiFi Channel

Get channel list:

root@copper:~ # iwlist ath0 channel
ath0      26 channels in total; available frequencies :
          Channel 01 : 2.412 GHz
          Channel 02 : 2.417 GHz
          Channel 03 : 2.422 GHz
          Channel 04 : 2.427 GHz
          Channel 05 : 2.432 GHz
          Channel 06 : 2.437 GHz
          Channel 07 : 2.442 GHz
          Channel 08 : 2.447 GHz
          Channel 09 : 2.452 GHz
          Channel 10 : 2.457 GHz
          Channel 11 : 2.462 GHz
          Channel 12 : 2.467 GHz
          Channel 13 : 2.472 GHz
          Current Frequency:2.412 GHz (Channel 1)

Change channel:

root@copper:~ # iwconfig ath0 channel 2

Tx Power

Get available power settings:

root@copper:~ # iwlist ath0 txpower
ath0      8 available transmit-powers :
          0 dBm         (1 mW)
          7 dBm         (5 mW)
          9 dBm         (7 mW)
          11 dBm        (12 mW)
          13 dBm        (19 mW)
          15 dBm        (31 mW)
          17 dBm        (50 mW)
          19 dBm        (79 mW)
          Current Tx-Power:19 dBm       (79 mW)

Change Tx Power:

root@copper:~ # iwconfig ath0 txpower 17db

Some cards also support auto Tx Power:

root@copper:~ # iwconfig ath0 txpower auto

Country Code (MadWifi)

Get current country code:

root@copper:~ # sysctl dev.wifi0.countrycode

To change the country code, first stop and unload the driver:

root@copper:~ # /etc/rc.d/rc.wlanap unload

Then reload the driver:

root@copper:~ # modprobe ath_pci countrycode=276

And restart the addon:

root@copper:~ # /etc/rc.d/rc.wlanap start

This may or may not work for your card!
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Last modified: 2007-11-26