Re: RFMON detection

[hax <uberhax () gmail com>]

> The detection of radio reception is utilized in the following
> systems.
>
> Neilsen / Arbitron channel detection - short range detection of the
> television or radio IF frequency, to determine the channel or
> frequency the viewer or listener is tuned to. For example, this is
> the method the Neilsen set top box detects the viewed channel in a
> metered household. (system is going away with the APM rollout). I
> believe the BBC uses a similar system in mobile vans to catch
> unlicensed (untaxed) TV receivers in Great Britain.
>
> IMHO - It is theoretically possible to detect the IF frequency of the
> 802.11x card, as they all use analog RF detection methods. However,
> the card RF section is usually shielded, and 2.5 gig band is full of
> everything from microwave ovens, at approx 2150 MHz, to portable
> phones. Very noisy analog area. Your mileage could vary.

Well, I guess that's the answer to the RFmon question.
It'd be interesting if anyone has the equipment laying around to do
top box detection to see if it could be modified for 802.11, if for
nothing else than proof of concept.

--hax

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