Jammer: we suppress GSM, 3G, 4G, WiMAX, Yota

We live in a free country. Anyone can purchase a “toy” for which a US $ 112,000 fine shines in the United States (jammers are also outlawed in England, European Union countries, Australia, Canada, India, Singapore , etc. )

While there is a possibility (“until the burdock has not guessed”), I took one of the popular civilian wilderness to review.

Overview of the 5-channel jammer GRN40-A5

In 2012, the issue of wide use of GSM jammers in public places was discussed .
In 2014, Russian developers presented their device for the USE.
In 2014, Hacker magazine recognized jammer as a useful gadget.
In February 2015, an African attacker dragged the jammer into parliament .
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Interestingly, the fun began and jammers appear on the jammers (and the jammers' detectors), and in turn jamming jammers and so on appear.



This is how our parents see jammers:


Relevance

The search query "stunner" in google.com/trends and wordstat.yandex.ru

The legal side of the issue
The use of technical means of suppressing signals of mobile phones and other radio communications refers to the sphere regulated by the state. For legal use of cell phone blockers, these devices must be certified for use in the Russian Federation and properly registered. The manufacturer or the seller (importer) is responsible for device certification. The owner registers such equipment, and a separate certificate must be obtained for each device used, indicating the identification data of this device.

The regulatory basis in this matter is the federal law “On Communications” N 126-FZ of 07.07.2003 and the resolution of the Government of the Russian Federation N 539 of October 12, 2004 “On the procedure for registering radio-electronic means and high-frequency devices”. Also of some interest may be the decision of the State Committee of Radio Frequencies No. 05-10-03-001 “On the allocation of radio frequency band 0.1-1000 MHz for radio noise generators used as information security tools”, but note that this decree applies only to suppressors Radio communication operating in the range up to 1 GHz.


Quadcopter, which I was looking for a sniper . Although the 2.4 GHz frequency is not working for this assembly of a jammer, anyway, when approaching the device, the quadcopter stops responding to the console signals.


Inside The boards are tightly attached to the thick case of the radiator, which allows cooling without a noisy fan. For each band - its own antenna and its own fee. Composition: voltage controlled oscillator (VCO), amplifier, noise generator, modulator




Rear panel. Here you can tweak the frequency for each antenna. The American colleagues even wrote the post how to disassemble the Chinese budget jammer and reconfigure it to the American frequencies. In our case, you need to unscrew the special cap on the rear panel.


It is possible to adjust the power for each range of muffling

DIY
Glushilka is not such a complicated thing and you can assemble it yourself, there are many diagrams and manuals on the net.

English-language post about how to make a GSM jammer yourself

Wi-Fi jammer. Detailed video instruction on making jammers. Additional materials here .

Military and anti-terrorism jammer

The jammers are used by special services when storming buildings, as well as to prevent the triggering of remote explosive devices

Berlin hackers

With the help of a budget car and a few budget tubes, the Germans for DoS or Berlin


Jammer was made of a cheap mobile phone and other cellular phones are jammed by it.
(and also paging attack, interception of sms, identity theft, more in the article )
Publication of Hacked Feature Phone Block Other People's Calls in the MIT Technology Review
Presentation Video

Frequencies and standards

frequencies of various communication standards of Russian operators

Strip stubs

cover and antennas disassembled




check the ether on the Hackspace spectrum analyzer




here is a wilderness dragged African attacker into parliament in Africa

I express my gratitude to the store jammer.su for the equipment provided

PS If anyone has interesting ideas or questions, you can come to hackspace and test the device yourself.