bt ~ # iwconfig
lo no wireless extensions.

wifi0 no wireless extensions.

ath0 IEEE 802.11g ESSID:"homenet" Nickname:""
Mode:Managed Frequency:2.437 GHz Access Point: 00:17:9A:26:8C:0E
Bit Rate:18 Mb/s Tx-Power:15 dBm Sensitivity=1/1
Retryff RTS thrff Fragment thrff
Encryption key:1234-5678-99 Security modepen
Power Managementff
Link Quality=18/70 Signal level=-78 dBm Noise level=-96 dBm
Rx invalid nwid:5601 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0

bt ~ # iwconfig ath0 mode monitor
Error for wireless request "Set Mode" (8B06) :
SET failed on device ath0 ; Invalid argument.

wlanconfig ath1 create wlandev wifi0 wlanmode monitor