Hi Henry: Thanks for your reply. ------------------ Tao Jiang (姜涛) jiangtao.jit@gmail.com 2014-06-17 ------------------------------------------------------------- 发件人：Henry Hallam <henry@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@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