FCC ENFORCEMENT ADVISORY, CELL JAMMERS, GPS JAMMERS, AND OTHER JAMMING DEVICES
Federal Communications Commission
News Media Information 202 / 418-0500445 12th St., S.W.
Washington, D.C. 20554
February 9, 2011
Enforcement Advisory No. 2011-03
FCC ENFORCEMENT ADVISORY
CELL JAMMERS, GPS JAMMERS, and OTHER JAMMING DEVICES
Retailers Advised that the Marketing or Sale of Devices Designed to Block, Jam,or Interfere with Authorized Radio Communications Is Strictly Prohibited in the U.S.
Enforcement Bureau Takes Action Against the Retail Sale of JammersIn order to prevent harmful interference to critical public safety communications and authorized radio services, federal
law prohibits the marketing and sale of "jammers," i.e., equipment designed to intentionally block, jam, or interfere with
licensed or authorized radio communications. This longstanding prohibition applies to any type of jamming equipment,
including devices that interfere with cellular and Personal Communications Services (PCS), police radar, Global
Positioning Systems (GPS), and wireless networking services (Wi-Fi).1
Jammers not only disrupt authorized radio services, but also jeopardize critical public safety communications, such as
9-1-1 calls, and could compromise law enforcement efforts. Ensuring the public's access to these vital services is
critically important, and the Enforcement Bureau is committed to strict enforcement in this area. Recently, for
example, the Bureau: issued seven citations requiring well-known online retailers of cell phone jammers to come into
immediate compliance;2 launched a proceeding to revoke the equipment authorization for a device that is being
marketed in the United States as a text stopper;3 and initiated a $25,000 forfeiture proceeding against
Phonejammer.com for marketing cell phone jammers in the United States.4 A complete list of jammer enforcement
actions is available at www.fcc.gov/eb/jammerenforcement.
What is Prohibited?Federal law prohibits the manufacture, marketing, and operation of jammers in the United
States.5 As to operation, section 333 of the Communications Act prohibits "willful or malicious" interference to
1 See Sale or Use of Transmitters Designed to Prevent, Jam or Interfere with Cell Phone Communications is Prohibited in the United
States, Public Notice, DA 05-1776 (2005); Office Of Engineering and Technology and Compliance and Information Bureau Warn
Against the Manufacture, Importation, Marketing or Operation of Transmitters Designed to Prevent or Otherwise Interfere with Cellular
Radio Communications, Public Notice, DA 99-2150 (1999).
2 See DealExtreme, Citation, DA 11-248 (2011); Share Enterprises Unlimited, Inc., Citation, DA 11-247 (2011); Comtrex
Communications, Ltd., Citation, DA 11-135 (2011); DeadlyDeal.com, Citation, DA 11-125 (2011); New Century Technology Limited,
Citation, DA 11-98 (2011); Everybuying.com, Citation, DA 10-2295 (2010); Jammer World/TheJammerStore.com, Citation, DA
10-2240 (2010) (all noting that future violations could lead to forfeitures).
3 See Shenzhen Tangreat Technology Co., Ltd., Order to Show Cause and Notice of Opportunity for Hearing, DA 11-246, (2011)
(proposing both revocation and forfeiture liability and directing Shenzhen to respond within 30 days).
4 See Phonejammer.com, Notice of Apparent Liability for Forfeiture, DA 10-669 (2010).
5 See 47 U.S.C. 301, 302a(b). Two statutory exceptions include manufacture solely for export and use by the U.S.
Government. See 47 U.S.C. 302a(c); 47 C.F.R. 2.807(a)-(d). Marketing is defined as the "sale or lease, or offering for sale
Page 1 of 2
authorized radio communications, and thus prohibits the operation of jammers.6 As to manufacture and
marketing, section 302(b) of the Communications Act and section 2.803 of the Commission's rules prohibit the
manufacture, import, sale, offer for sale, or shipment of devices that do not comply with the FCC's rules.7 In turn, the
FCC prohibits the marketing of radio frequency devices in the United States unless the devices are properly authorized
or meet other applicable requirements.8 Jammers, by definition, can never be authorized because they are designed to
interfere with authorized radio communications. Therefore, they cannot be marketed in the United States (except in
the very limited context of authorized use by the U.S. government).9
What Should Manufacturers and Retailers Do to Comply?Manufacturers and retailers of electronic
equipment should take the following steps:
OE Immediately stop marketing within the United States any equipment that is designed to block, jam, or
otherwise interfere with authorized radio communications.
v Decline to sell or ship such jamming devices to addresses in the United States and its territories (except in
the case of permitted sales to the U.S. government).
w Ensure that any jamming devices manufactured in the United States are available solely for export and are not
for sale domestically except to the U.S. government. We note that U.S. manufacturers should be aware that
jammers may be unlawful in other countries.
We emphasize that it is insufficient and misleading for manufacturers and retailers to include a disclaimer on their
websites or in promotional or advertising materials stating or implying that U.S. consumers bear sole responsibility for
complying with the applicable legal obligations. Such disclaimers are misleading because they fail to disclose that the
manufacturer or retailer is also violating the law both by offering the device for sale to U.S. customers and completing
the sale transaction. Use of disclaimers that purport to place the sole burden on the buyer cannot absolve the
manufacturer or retailer of liability.
What Are the Penalties that Apply?Unlawfully marketing jammers in the United States may result in monetary
forfeitures of up to $16,000 for each violation or each day of a continuing violation, and up to $112,500 for a single
violation, seizure of the unlawful equipment, and criminal sanctions including imprisonment.10 The Enforcement Bureau
remains committed to strict enforcement in this area.
Need more information?To file a complaint, visit www.fcc.gov/complaints or call 1-888-CALL-FCC. For additional
information regarding compliance with and enforcement of the Commission's equipment marketing rules as they apply
to jamming devices, please visit www.fcc.gov/eb/jammerenforcement or contact Kevin Pittman or Neal McNeil of the
Enforcement Bureau at (202) 418-1160 or email@example.com. Media inquiries should be directed to David Fiske at
(202) 418-0513 or David.Fiske@fcc.gov.
To request materials in accessible formats for people with disabilities (Braille, large print, electronic files, audio format),
send an e-mail to firstname.lastname@example.org or call the Consumer & Governmental Affairs Bureau at (202) 418-0530 (voice),
(202) 418-0432 (TTY). You may also contact the Enforcement Bureau on its TTY line at (202) 418-1148 for further
information about this Enforcement Advisory, or the FCC on its TTY line at 1-888-TELL-FCC (1-888-835-5322) for
further information about the jamming prohibitions.
Issued by: Chief, Enforcement Bureau
or lease, including advertising for sale or lease, or importation, shipment, or distribution for the purpose of selling or leasing
or offering for sale or lease." 47 C.F.R. 2.803(e)(4).
6 See 47 U.S.C. 333. See also 47 U.S.C. 301, 302a(b). See also CONSUMERS BEWARE: It is Unlawful to Use "Cell Jammers"
and Other Equipment that Blocks, Jams, or Interferes with Authorized Radio Communications in the U.S., FCC Enforcement Advisory,
DA 11-250 (2011).
7 See 47 U.S.C. 302a(b); 47 C.F.R. 2.803.
8 See, e.g., 47 C.F.R. 2.803(c)-(d).
9 See 47 U.S.C. 302a(c); 47 C.F.R. 2.807(d).
10 See 47 U.S.C. 401, 501, 503, 510; 47 C.F.R. 1.80(b)(3).
Page 2 of 2
Note: We are currently transitioning our documents into web compatible formats for easier reading. We have done our best to supply this content to you in a presentable form, but there may be some formatting issues while we improve the technology. The original version of the document is available as a PDF, Word Document, or as plain text.