Mission Critical magazine reports the FCC again released a public notice stating it is illegal to use a cell-phone jammer or other device that blocks, jams or interferes with authorized communications.  The notice outlines what jammers are, why they are prohibited and how they work. The notice states it is illegal to operate jammers in the United States unless the use is by authorized federal agencies. It is illegal to import jammers to the United States and to sell or advertise them online or in stores.

Courtesy Mission Critical,  http://mccmag.com/newsArticle.cfm?news_id=11491