"Vedran" <(E-Mail Removed)> hath wroth:
>Are there WLAN adapters that can listen more than one channel at once.
Yes. They have two radios inside the box. Proxim AP-4000 and such.
>For
>example, while in monitor mode, adapter recieves all the frames from only
>one channel, and I have to monitor two channels at once. I found that there
>are APs that can send data on three channels at once, but haven't found
>PCMCI product that can recieve on more than one channel. Have I missed
>something, or are there no such products?
Oh, you want the ultimate sniffer that can monitor everything on every
channel. I don't know of any such device. Sniffer receivers are
scanners. They scan for valid packets and stop to decode the data if
they hear something worth decoding. In order to do what you propose,
you would need to disable the scanning and use 11 wireless cards. It
can certainly be done by digitizing the entire 83.5MHz of the band
with a broadband receiver, and later seperating out the data later via
a DSP. Basically a software defined radio. I expect to see such
devices shortly, but at this time, it's stictly science fiction and
development work.
Which AP's transmit on 3 channels at once? Are you thinking of MIMO
or 802.11n? Note that some of these send identical data via 3
different paths, but all on the same channel. They do not use 3
channels. There are channel bonding schemes to get 108Mbits/sec
thruput that use 2 channels, but that's with only one transmitter.
--
Jeff Liebermann
(E-Mail Removed)
150 Felker St #D
http://www.LearnByDestroying.com
Santa Cruz CA 95060
http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
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