WIFI DFing

Jacek Radzikowski jacek.radzikowski at gmail.com
Wed Mar 20 18:06:31 EDT 2019


Using regular radio for DFing a wifi transmitter is not such a good idea.
The channels overlap, higher data rate transmissions use spectrum spanning
several channels, and many stations transmit on the same frequency, so with
a plain received you will hear a cacophony of sounds, making it almost
impossible to find the station you're looking for.
You will get much better results using a good wifi card with SMA connector
(Alfa cards are great for 2.4G band) with a directional external antenna
and airmon-ng from Aircrack-ng package to monitor signal strength for the
station you are interested in.
Don't buy those cheap 2.4G yagis from ebay or amazon. They are junk. You'll
get much better results with a home-made cantenna, orheck Andrew Mcneil's
channel on youtube if you need some inspiration:
https://www.youtube.com/channel/UCHqwzhcFOsoFFh33Uy8rAgQ

Regards,
Jacek
kw4ep

On Wed, Mar 20, 2019 at 5:18 PM Martin <dcmk1mr2 at gmail.com> wrote:

> WiFi features short packets.  You can tune in on an access point and hear
> the clicks.  You could try with a highly directional yagi or time of
> arrival rig.
>
> BTW Transmitter Hunting
> <https://www.amazon.com/Transmitter-Hunting-Direction-Finding-Simplified/dp/0830627014/ref=asc_df_0830627014/?tag=hyprod-20&linkCode=df0&hvadid=312126345020&hvpos=1o1&hvnetw=g&hvrand=18402996747497945190&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9032081&hvtargid=pla-569092361693&psc=1> is
> highly recommended but is mostly VHF.
>
> 73 Martin W6MRR
>
>
> On Wed, Mar 20, 2019 at 1:55 PM Alex Fraser <beatnic at comcast.net> wrote:
>
>> Is it possible to find a WIFI station with direction finding?
>> --
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