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

DISCUSSION jiangtao.jit 2 participants 3 messages Jun 16, 2014 – Jun 17, 2014

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jiangtao.jit

author

2014-06-16 09:36 UTC #0 lore raw

Hi ALL:

How to capture channel 2 's frames when wireless interface was set to channel 1. Wireless card is in mode 11g.
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?
Thank you.

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Tao Jiang (??)

jiangtao.jit at gmail.com
2014-06-16

Henry Hallam

2014-06-17 01:12 UTC #1 lore raw

Quoted 3 lines · jiangtao.jit

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

jiangtao.jit

author

2014-06-17 06:45 UTC #2 lore raw

Hi Henry:

Thanks for your reply.

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