How to capture channel 2 's frames when wireless interface was set to channel 1

[jiangtao.jit]

Hi Henry:

Thanks for your reply.

------------------				 

Tao Jiang (姜涛)

jiangtao.jit at gmail.com
2014-06-17

-------------------------------------------------------------
发件人：Henry Hallam <henry at pericynthion.org>
发送日期：2014-06-17 09:12
收件人：jiangtao.jit
抄送：Kernel Newbies
主题：Re: How to capture channel 2 's frames when wireless interface was
 set to channel 1

On Mon, Jun 16, 2014 at 2:36 AM, jiangtao.jit <jiangtao.jit at gmail.com> wrote:
> Bandwidth is 20MHz, between channel 1 and 2 is 5MHz, 20MHz include channel 2.
> So it's can capture channel 2's frames when wireless card is set in channel 1.
> Is that right?

Hi Tao,

I don't know anything about the kernel wireless drivers.  But I do
know something about RF communications, and based on that I would say
"probably not".  I would be extremely surprised if it were possible to
see frames transmitted on channel 2 when the radio is tuned to channel
1.

Traffic on channel 2 could interfere with and corrupt traffic on
channel 1, but that doesn't mean you can successfully decode the
frames.

Cheers, Henry