Instructables
video Build your own WIFI jammer
Build your own WIFI jammer using a 2.4GHz AV transmitters. In this video I will show you how you can build your own jammer to jam a WIFI connection. I will also explain how this works and the difference between jamming and interference.

Wikipedia page on jamming : http://en.wikipedia.org/wiki/Radio_jamming

Av transmitters : http://www.amazon.co.uk/XL24017-Wireless-Transmitting-Module-Transmitter/dp/B008MF7XAU

http://www.ebay.co.uk/itm/220981412161?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

http://www.suntekstore.com/goods-10016868-24_g_4_ch_xl24017_wireless_audio_video_transmitting_module_av_transmitter.html

Pictures here: https://plus.google.com/u/0/photos/100983775122405766032/albums/5875275471738140113

skote18 days ago

Sorry, I am a bit electric illiterate and I don't really get the part where you put the jumper to a specific channel, my A/V transmitters looks slightly different, from where do I put the jumper?

Many thanks!

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I built this with those! if you look at it antenna up from the side with longer pins the 4 bottom pins go [ground,positive,video audio] you only need the ground and positive. The jumpers go on the 5 pin row to the left. You bridge the bottom one (ground) to the one next to it for low channels, ground to the one one pin away for slightly higher and so on.

samerh13 days ago

Dear Sir,

How can we modify this circuit to work in bluetooth range ?? Appreciate your help and support.

JAVAB2 months ago
FoamboardRC10 months ago

Ok so you kind of skip electronic wiring part. Do you set each different module to a different channel? What if you set 2 modules to the same channel, would it make the wifi connection even worse?

elialpi1 year ago
I've made! IT WORKS PERFECTLY!!!! It's amazing and incredible!! I can not belive when i see the signal lost from my laptop, 2 desktop and iphone. I've tried also to some friends of mine and i've saw thet the channel most used are 3 and 4 of the little circuit board. So i want to make a little one with only 2 circuit and a little lipo 3.7 volt.....
Thanks man you are the number one!!!
Nice video, i'm gonna try and build one myself, I always used an off the shelf video transmitter as instruction material, but you can only use one of four channels. There is one thing not correct though. The jammer does not overpower the wi-fi, it just uses al the airtime.

MikB1 year ago
Same in the UK. Although it is a "de-restricted" unlicensed band, the equipment must be type approved and used correctly at appropriate radiated power.

Intentionally blocking legitimate users of the band is not legal, even if the equipment being used to do it is.
Note that in the United States this is illegal depending on your transmitter power level, or if you are interfering with a licensed radio signal (we do have licensed users in the wifi spectrum here).