<help>my wireless can't fine channel 13

hi...
i'm a beginner in backtrack.
i have install BT-5 in my mechine . but, i got a problem in backtrack. my wireless devices can't be scan channel 13 in my area. but i can find of other nework in channel 11 and to bottom.

this is my lspci...

Code:

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root@bt:~# lspci
00:00.0 Host bridge: Intel Corporation N10 Family DMI Bridge
00:02.0 VGA compatible controller: Intel Corporation N10 Family Integrated Graphics Controller
00:02.1 Display controller: Intel Corporation N10 Family Integrated Graphics Controller
00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 02)
00:1c.0 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 1 (rev 02)
00:1c.1 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 2 (rev 02)
00:1d.0 USB Controller: Intel Corporation N10/ICH7 Family USB UHCI Controller #1 (rev 02)
00:1d.1 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #2 (rev 02)
00:1d.2 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #3 (rev 02)
00:1d.3 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #4 (rev 02)
00:1d.7 USB Controller: Intel Corporation N10/ICH 7 Family USB2 EHCI Controller (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2)
00:1f.0 ISA bridge: Intel Corporation NM10 Family LPC Controller (rev 02)
00:1f.2 SATA controller: Intel Corporation N10/ICH7 Family SATA AHCI Controller (rev 02)
00:1f.3 SMBus: Intel Corporation N10/ICH 7 Family SMBus Controller (rev 02)
01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 04)
01:00.1 Class ff00: Realtek Semiconductor Co., Ltd. Device 5288 (rev 01)
02:00.0 Network controller: Broadcom Corporation Device 4727 (rev 01)

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is there someone to guide me whit this problem.


thank's before..

http://www.securitytube.net/video/1781

In this video, we will understand how to use the Alfa card to navigate channels outside the current regulatory domain and also how to set the power to the factory maximum. We will explore various techniques of how to set the card on arbitrary channels and power (up to maximum allowed by the hardware). This is a must watch for any WiFi penetration tester

Well i don't know about the lsci cos i'm new too

but from what i know from other systems ,the channel list is different from country to country so just try to change your country in (somewhere in BT i'm New) and i think you will find the channel