dmesg |grep iwl
[   10.272039] iwlagn: Intel(R) Wireless WiFi Link AGN driver for Linux, in-tree:
[   10.272044] iwlagn: Copyright(c) 2003-2010 Intel Corporation
[   10.272458] iwlagn 0000:01:00.0: PCI INT A -> Link[LK2E] -> GSI 17 (level, high) -> IRQ 17
[   10.272466] iwlagn 0000:01:00.0: setting latency timer to 64
[   10.272496] iwlagn 0000:01:00.0: Detected Intel(R) Wireless WiFi Link 4965AGN, REV=0x4
[   10.313654] iwlagn 0000:01:00.0: device EEPROM VER=0x36, CALIB=0x5
[   10.313657] iwlagn 0000:01:00.0: Device SKU: 0Xb
[   10.314446] iwlagn 0000:01:00.0: Tunable channels: 11 802.11bg, 13 802.11a channels
[   10.314507] iwlagn 0000:01:00.0: irq 43 for MSI/MSI-X
[   10.611509] iwlagn 0000:01:00.0: loaded firmware version 228.61.2.24
[   10.820868] ieee80211 phy0: Selected rate control algorithm 'iwl-agn-rs'

-- CUT --

iwlist freq
lo        no frequency information.

eth0      no frequency information.

ath0      13 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:2.472 GHz (Channel 13)

vboxnet0  no frequency information.

tun0      no frequency information.

tun1      no frequency information.

tun2      no frequency information.

tun3      no frequency information.

wlan3     24 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 36 : 5.18 GHz
          Channel 40 : 5.2 GHz
          Channel 44 : 5.22 GHz
          Channel 48 : 5.24 GHz
          Channel 52 : 5.26 GHz
          Channel 56 : 5.28 GHz
          Channel 60 : 5.3 GHz
          Channel 64 : 5.32 GHz
          Channel 149 : 5.745 GHz
          Channel 153 : 5.765 GHz
          Channel 157 : 5.785 GHz
          Channel 161 : 5.805 GHz
          Channel 165 : 5.825 GHz