# iwconfig
eth0      no wireless extensions.

lo        no wireless extensions.

dummy0    no wireless extensions.

wifi0     no wireless extensions.

ath0      IEEE 802.11g  ESSID:"dlink"  Nickname:""
          Mode:Managed  Frequency:2.427 GHz  Access Point: 00:19:5B:57:ED:05
          Bit Rate:1 Mb/s   Tx-Power:8 dBm   Sensitivity=1/1
          Retry:off   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality=22/70  Signal level=-75 dBm  Noise level=-97 dBm
          Rx invalid nwid:121302  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0