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en.wikipedia.org/wiki/Mobile_phone_jammer

A mobile phone jammer is an instrument used to prevent cellular phones from receiving signals ... However, is a major supplier of jammers. United States: Cell phone blocking devices are used by federal officials under certain circumstances.

www.jammerfromchina.com/categories/Mobile_Phone_Jammers

Mobile phone jammers can block the latest phone signals are here. Easy to picking up the suitable device by choosing the jamming distance, the blocking ...

electronics.howstuffworks.com/cell-phone-jammer.htm

A cell phone jammer allows people to exploit the vulnerability of the radio spectrum to silence blabbering offenders. See how cell phone jammers work.

www.jammer-store.com/gsm-blockers-jammers.html

www.jammer-store.com

Jammer Store is one of the leading manufacturers of cell phone signal jammers and cell phone blockers, GPS and WIFI jamming equipment, mobile phone ...

www.pcmag.com/article2/0,2817,2485587,00.asp

Jun 8, 2015 ... Dean Liptak getting in hot water for blocking cell phone signals in his Fivay ... Hell, it's illegal to even sell jammers in the U.S., but they're easy ...

www.thesignaljammer.com

The Signal Jammer. Cell phone jammer and mobile GSM blocker devices for sale. Free Shipping, One year warranty. Buy the best quality professional ...

www.thesignaljammer.com/pages/Cell-Phone-Blocker-Device.html

The small cell phone signal blocker device sold for $30 and why we don't carry them. Free shipping and 1 year warranty on all our products.

www.cnet.com/news/man-put-cell-phone-jammer-in-car-to-stop-driver-calls-fcc-says

May 1, 2014 ... Florida man fined $48000 for driving around with a phone jammer in his ... Police alerted when Metro PCs reports constant problems with a cell ...