Install aircrack-ng and use a $18 Alfa APA-M25 2.4/5 GHz directional patch antenna.
You may also need a variable attenuator if the source is high power and nearby. Check out Ebay. Or try an indoor yagi from simplewifi.com but they cost more than a patch antenna. -- Cinaed On 12/07/2016 11:59 AM, Tamer Çelik wrote: > Hello again Scott, > > After running some tests with HackRF, i can say that its not capable to > demodulate wifi signals due its sampling rate. > And yes, bandwidth is limited to 20MHz but issue occurs on all channels. > I am going to reanalyze everything with usb wifi dongle using inSSIDet > as mentioned by Garvin. > Do you recommend any other tool for such task? > I cant see which tool you sent on screenshot. > Thanks! > > > > On Dec 7, 2016 18:03, "Scott Davis" <[email protected] > <mailto:[email protected]>> wrote: > > The HackRF is limited to a 20-MHz bandwidth, which is the > approximate width of a single wi-fi channel. The wi-fi radio in > your computer might be a better sniffing tool, with some type of > scanning/analysis software that can show the entire band at once. > With the HackRF, you would need to ”tune around” in frequency as > well as spatial orientation to get an idea of the signals in your > vicinity. > > -Scott > > Example: > > > https://www.amazon.com/photos/share/hDY7ElO2wAnlVQQ0pesLH70qvAf4xviDvpI2SFtLfpv > > <https://www.amazon.com/photos/share/hDY7ElO2wAnlVQQ0pesLH70qvAf4xviDvpI2SFtLfpv> > > >> On Dec 7, 2016, at 5:51 AM, Tamer Çelik <[email protected] >> <mailto:[email protected]>> wrote: >> >> Hello everyone, >> Thanks for all the tips. >> I was thinking getting this antenna: >> >> https://www.amazon.com/Super-Power-Supply-Directional-Wireless/dp/B016APUGB6/ref=sr_1_8?s=pc&ie=UTF8&qid=1481113798&sr=1-8&keywords=wifi+directional >> >> <https://www.amazon.com/Super-Power-Supply-Directional-Wireless/dp/B016APUGB6/ref=sr_1_8?s=pc&ie=UTF8&qid=1481113798&sr=1-8&keywords=wifi+directional> >> It's compact and perfect for 2.4 GHz band. Just need to get an >> RP-SMA to SMA converter adapter to use it with HackRF. >> >> But i am still not sure where to look for interference. >> Which software i should use and what should i look for? >> I was thinking running SDRsharp with RX gain settings adjusted >> (low gain settings to pick any signal from 2.4GHz device when i >> physically close to it) >> I have decided to use HackRF after i came across a wifi analyzer >> device called Chanalyzer http://www.metageek.com/products/wi-spy/ >> <http://www.metageek.com/products/wi-spy/> They provide a fancy >> software to determine possible intereference source and they are >> quite expensive, around $2000. >> But i think i won't need any fancy software or look out for any >> specific waveform determine this interference, right? >> Again, i have no idea what should i look for. (Noise? Waveform?) >> >> Any ideas would be great. >> Thanks! >> >> >> On Wed, Dec 7, 2016 at 8:21 AM, Scott Davis <[email protected] >> <mailto:[email protected]>> wrote: >> >> There are many, many commercial directional antennas available >> for the 2.4 GHz band. Dish Network operates in the Ku-band, >> around 12 GHz, so their dishes are a bit small for 2.4, but it >> sounds like fun to play with one…it’s a lot easier to use a >> smaller, lightweight yagi. They come in all sizes. Here’s >> one example: >> >> >> https://www.amazon.com/gp/product/B008Z4I7WQ/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1 >> >> <https://www.amazon.com/gp/product/B008Z4I7WQ/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1> >> >> -Scott >> >> >>> On Dec 6, 2016, at 8:41 PM, Chuck McManis >>> <[email protected] <mailto:[email protected]>> wrote: >>> >>> In the US there is a company called Dish Network (satellite >>> TV) they >>> use a small dish antenna to talk to the satellites, it also >>> makes a >>> great starting point for a directional WiFi antenna. Remove >>> the LNB >>> that is normally in the antenna and tape a WiFi chip antenna >>> at the >>> focal point. You can then point quite accurately at various WiFi >>> sources. >>> >>> >>> <http://tse1.mm.bing.net/th?&id=OIP.M2844c9d84173dc5d1b923fed7c9edf64o0&w=300&h=300&c=0&pid=1.9&rs=0&p=0&r=0 >>> >>> <http://tse1.mm.bing.net/th?&id=OIP.M2844c9d84173dc5d1b923fed7c9edf64o0&w=300&h=300&c=0&pid=1.9&rs=0&p=0&r=0>> >>> is a picture of one of these antennas. >>> >>> --Chuck >>> >>> On Tue, Dec 6, 2016 at 5:20 PM, Tamer Çelik >>> <[email protected] <mailto:[email protected]>> wrote: >>>> Hello, >>>> I am having a strange interference issue on my 2.4GHz WiFi >>>> network while >>>> 5GHz band works perfect. >>>> This might be coming from one of my neighbours. >>>> Just wanted to ask if its possible to use a "directional" >>>> antenna with >>>> HackRF and explore the area for possible source of interference? >>>> I am pretty sure on that something jamming 2.4GHz for random >>>> intervals. >>>> Any suggestions? >>>> Thanks! >>>> >>>> _______________________________________________ >>>> HackRF-dev mailing list >>>> [email protected] >>>> <mailto:[email protected]> >>>> https://pairlist9.pair.net/mailman/listinfo/hackrf-dev >>>> <https://pairlist9.pair.net/mailman/listinfo/hackrf-dev> >>>> >>> _______________________________________________ >>> HackRF-dev mailing list >>> [email protected] >>> <mailto:[email protected]> >>> https://pairlist9.pair.net/mailman/listinfo/hackrf-dev >>> <https://pairlist9.pair.net/mailman/listinfo/hackrf-dev> >> >> >> _______________________________________________ >> HackRF-dev mailing list >> [email protected] >> <mailto:[email protected]> >> https://pairlist9.pair.net/mailman/listinfo/hackrf-dev >> <https://pairlist9.pair.net/mailman/listinfo/hackrf-dev> >> >> > > > > > _______________________________________________ > HackRF-dev mailing list > [email protected] > https://pairlist9.pair.net/mailman/listinfo/hackrf-dev > _______________________________________________ HackRF-dev mailing list [email protected] https://pairlist9.pair.net/mailman/listinfo/hackrf-dev
