以下iwconfig内容
iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
eth1 no wireless extensions.
wifi0 no wireless extensions.
ath0 IEEE 802.11a ESSID:"jack" Nickname:""
Mode:Managed Frequency:5.26 GHz Access Point: Not-Associated
Bit Rate:0 kb/s Tx-Power:17 dBm Sensitivity=1/1
Retryff RTS thr

ff Fragment thr

ff

Encryption keyEAD-BEFF-AA Security mode:restricted

Power Managementff

Link Quality=0/70 Signal level=-96 dBm Noise level=-96 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0