Guidance for licensees for FCC's narrowband operation requirement
Federal Communications Commission
News Media Information 202 / 418-0500445 12th St., S.W.
Washington, D.C. 20554
Released: March 14, 2013
WIRELESS TELECOMMUNICATIONS BUREAU, PUBLIC SAFETY AND HOMELAND
SECURITY BUREAU, AND OFFICE OF ENGINEERING AND TECHNOLOGY PROVIDE
GUIDANCE ON COMPLIANCE WITH NARROWBAND REQUIREMENT NOW IN EFFECT
FOR PRIVATE LAND MOBILE RADIO OPERATIONS IN THE 150-174 MHz AND 421-470
New Requirements Became Effective January 1, 2013This Public Notice provides guidance to licensees, frequency coordinators, equipment vendors,
and other interested parties regarding compliance with the Federal Communications Commission’s
requirement for narrowband operation (maximum 12.5 kHz channel bandwidth or equivalent efficiency)
by private land mobile radio (PLMR) licensees in the 150-174 MHz and 421-470 MHz (VHF/UHF)
bands.1 This requirement became effective on January 1, 2013. This notice also provides additional
information regarding licensing and enforcement of the transition to narrowband technology, including
guidance regarding requests for waiver of the requirement.
Overview of Key Narrowbanding ProvisionsLicensees and frequency coordinators should be aware that as of
January 1, 2013, all VHF/UHF
Industrial/Business and Public Safety Radio Pool licensees must:
operate on 12.5 kHz (11.25 kHz occupied bandwidth) or narrower channels, or
employ a technology that achieves the narrowband equivalent of at least one channel per
12.5 kHz of channel bandwidth for voice, and transmission rates of at least 4800 bits per
second per 6.25 kHz for data systems operating with bandwidths greater than 12.5 kHz
1 See Implementation of Sections 309(j) and 337 of the Communications Act of 1934 as Amended, Second Report and
Order and Second Further Notice of Proposed Rulemaking, WT Docket No. 99-87, RM-9332, 18 FCC Rcd 3034
(2003) (Second R&O); Implementation of Sections 309(j) and 337 of the Communications Act of 1934 as Amended,
Third Memorandum Opinion and Order, Third Further Notice of Proposed Rule Making and Order, WT Docket
No. 99-87, RM-9332, 19 FCC Rcd 25045 (2004) (Third MO&O); Implementation of Sections 309(j) and 337 of the
Communications Act of 1934 as Amended, Order, WT Docket No. 99-87, RM-9332, 25 FCC Rcd 8861 (2010)
(Narrowbanding Waiver Order); see also 47 C.F.R. §§ 90.203(j), 90.209(b). Specifically, the narrowbanding
deadlines apply to frequencies in the 150.8-162.0125 MHz, 173.2-173.4 MHz, and 421-512 MHz bands, but the
Wireless Telecommunications Bureau, Public Safety and Homeland Security Bureau, and Office of Engineering and
Technology have waived the January 1, 2013 deadline for PLMR licensees in the 470-512 MHz band. See
Implementation of Sections 309(j) and 337 of the Communications Act of 1934 as Amended, Order, WT Docket No.
99-87, RM-9332, 27 FCC Rcd 4213, on recon., Order on Reconsideration, 27 FCC Rcd 14770 (WTB/PSHSB/OET
Equipment manufacturers should be aware that, as of
January 1, 2013, they may no longer
manufacture or import equipment that includes a 25 kHz mode.2 Manufacturers may still manufacture or
import equipment that was certified to include wideband capability only if the modes of operation are
enabled through software rather than firmware or hardware and the manufacturer disables the wideband
mode and does not provide users with the software necessary to access the wideband mode.3 As of
January 1, 2013, the Commission will no longer certify equipment that is inherently wideband-capable,
even if the modes of operation are enabled through software.
Guidance for Licensees with Wideband Emission DesignatorsAs of January 1, 2013, continued wideband operation by PLMR licensees in the VHF/UHF bands
is not permitted without a valid waiver grant from the Commission. PLMR licensees that have not
obtained a waiver must indicate that they are operating in compliance with the narrowband requirement
by listing a narrowband emission designator on each of their licenses. Licensees must also remove
wideband emission designators from their licenses in accordance with the following procedures:
1) Licensees whose licenses list both wideband and narrowband emission designators are not
required to remove the wideband emission designator immediately but are encouraged to do so either (a)
the next time they make any change to their authorization, or (b) by filing a “simple” narrowbanding
modification with the Commission to remove the wideband designator (see “Filing Narrowbanding
Modification Applications after January 1, 2013” below for description of the simple modification
process). We advise licensees that where a license contains a wideband emission designator, the
reviewing Bureau may return an application for modification or renewal of that license if the application
does not include a modification request to remove the wideband designator and the reviewing Bureau
determines that the wideband designator is impermissible.4 To avoid the risk of a future modification or
renewal application being returned, we encourage licensees that do not anticipate making any other
changes to their authorization in the near future to file a simple narrowbanding modification application.
2) Licensees whose licenses list only wideband emission designators are differentiated based on
whether the licensee’s stations are or are not capable of operating in narrowband mode. We address each
situation in turn.
(a) Licensees with stations that are narrowband-capable must modify their licenses to substitute
narrowband emission designators for the wideband emission designators. A licensee that has
narrowbanded its system but that did not change its emission type (e.g., did not change from analog to
2 See 47 C.F.R. § 90.203(j)(10). In June 2010, the Commission waived this provision until January 1, 2013. See
Narrowbanding Waiver Order, 25 FCC Rcd 8166. On November 29, 2012, Motorola Solutions, Inc. filed a request
for a blanket waiver to permit the continued manufacture and importation of wideband-capable equipment for sale to
licensees that were granted waivers of the January 1, 2013 deadline to migrate to narrowband technology. See
Wireless Telecommunications Bureau, Public Safety and Homeland Security Bureau and Office of Engineering and
Technology Seek Comment on Motorola Request for Limited Waiver of Section 90.203(j)(10) of the Commission’s
Rules, Public Notice, WT Docket No. 99-87, 27 FCC Rcd 15213 (WTB/PSHSB/OET 2012). That petition remains
3 Licensees, Frequency Coordinators, and Equipment Manufacturers Reminded of Narrowband Migration Deadlines
in the 150-174 MHz and 421-512 MHz Bands, Public Notice, 24 FCC Rcd 14511, 14513 (WTB/PSHSB/OET
4 The wideband emission designator will be deemed impermissible if the licensee does not have a valid waiver for
the authorization or has not certified that it is operating with narrowband-equivalent technology.
digital operations)5 can accomplish this by filing a simple narrowbanding modification application (see
below). In this situation, the licensee may commence narrowband operation while the application is
pending.6 However, if a licensee is changing its emission type (e.g., transitioning from analog to digital
operation), the licensee must submit a modification application through a frequency coordinator and may
not commence use of the new emission type until the frequency coordinator has submitted the application
to the Commission.
(b) Licensees with wideband emission designators whose stations are not narrowband-capable
must either cease operating or immediately seek a waiver to permit continued wideband operation. Any
such waiver request must include an explanation as to why the licensee did not request a waiver prior to
the January 1, 2013 narrowbanding deadline.7 A licensee requesting a post-deadline waiver should not
assume that the waiver request will be granted, and grant of a waiver request does not insulate a licensee
from possible enforcement action for the period of unauthorized wideband operation after January 1,
2013. However, the Enforcement Bureau may consider the length of unauthorized operation when
evaluating the severity of the violation of the Commission’s rules as well as the appropriate sanction.
Therefore, we advise any licensee seeking a post-deadline waiver to take action to migrate to narrowband
technology as soon as possible to minimize the period of unauthorized wideband operation. We also note
that licensees operating pursuant to a waiver are still required to take reasonable precautions to avoid
causing harmful interference as well as to cooperate with other licensees to reduce and resolve harmful
interference. Failure to abide by either of these provisions may result in Enforcement action.8
Finally, as previously announced,9 for frequency coordination purposes, frequency coordinators
will generally treat incumbent wideband-only licenses, except those that have certified narrowband
equivalence (see below), as 12.5 kilohertz systems when coordinating new frequency assignments,
pursuant to Section 90.18710 and other applicable Commission rules. The only exceptions are if a
licensee has a pending modification application evidencing narrowbanding compliance or a pending or
granted request for waiver of the January 1, 2013 deadline. Specifically, frequency coordinators will
consider non-compliant wideband-only licenses during the frequency research, selection, and certification
process as if the non-compliant licenses are operating with an emission designator of 11K3F3E. In
addition, frequency coordinators may bring to the Commission’s attention stations that they believe are
5 A station’s emission type is reflected in the last three characters of the emission designator.
6 Note, however, that licensees operating in the Quiet Zone must wait for license approval before commencing
narrowband operation. See 47 C.F.R. § 1.924.
7 The Wireless Telecommunications Bureau and Public Safety and Homeland Security Bureau previously provided
guidance on the preparation and submission requests as well as the recommended content of waiver requests. See
Wireless Telecommunications Bureau, Public Safety and Homeland Security Bureau, and Office of Engineering and
Technology Provide Reminder of January 1, 2013 Deadline for Transition to Narrowband Operations in the 150-174
MHz and 421-512 MHz Bands and Guidance for Submission of Requests for Waiver and Other Matters, Public
Notice, 26 FCC Rcd 9647 (WTB/PSHSB/OET 2011); Wireless Telecommunications Bureau and Public Safety and
Homeland Security Bureau Provide Supplemental Guidance for Licensees in the 150-174 and 421-512 MHz Bands
Seeking Waivers of the January 1, 2013 Narrowbanding Deadline, Public Notice, 27 FCC Rcd 1936 (WTB/PSHSB
8 47 C.F.R. §§ 90.173(b), 90.403(e)
9 Wireless Telecommunications Bureau, Public Safety and Homeland Security Bureau, and Office of Engineering
and Technology Provide Reminder of January 1, 2013 Deadline for Transition to Narrowband Operations in the
150-174 MHz and 421-470 MHz Bands, Public Notice, 27 FCC Rcd 14896, 14899 (WTB/PSHSB/OET 2012).
10 47 C.F.R. § 90.187.
either operating in wideband mode in violation of the Commission’s rules or that have discontinued
The Bureaus intend to take steps to verify the status of all stations with active licenses that
include wideband emission designators, to confirm that such stations remain operational and are in
compliance with the narrowbanding rules. The Bureaus will provide more details on this verification
process in a subsequent Public Notice.
Filing Narrowbanding Modification Applications after January 1, 2013The Bureaus recently added a new narrowbanding licensing tool to the Universal Licensing
System to simplify the filing of simple narrowbanding modification applications. A simple
narrowbanding modification application is an application to modify a license by deleting a wideband
emission designator (occupied bandwidth in excess of 11.25 kHz) and, if necessary, adding one or more
narrowband emission designators, without changing the existing frequencies, emission types, locations, or
other technical parameters of the license.11 These applications require neither frequency coordination12
nor payment of Commission fees.13
The narrowbanding modification tool will only provide access to wideband-only authorizations
that do not require IRAC coordination or Quiet Zone notification and that are not associated with any
other pending applications. We strongly encourage licensees who wish to use this tool to first search
ULS to develop an accurate inventory of their authorizations to help ensure that they do not accidentally
omit a call sign.
To access the narrowbanding modification tool, users must use an FRN and Password or a unique
access code. Licensees who need an access code should contact the Licensing Support Center at (877)
480-3201, option #5. For questions or additional information on how to file applications to modify or
delete wideband emissions, users should consult the web at
https://www.fcc.gov/encyclopedia/narrowbanding-overview or contact the Licensing Support Center.
A modification application that reduces the occupied bandwidth but also alters other technical
parameters, such as changing from analog to digital emissions, is not a simple narrowbanding
modification application, and therefore requires both frequency coordination and payment of Commission
11 Applicants should modify the emission designator for the existing frequency assignment(s), rather than modify the
license by adding a “new” frequency that duplicates an existing frequency in all respects other than occupied
bandwidth. Adding a “new” frequency will result in ULS assigning a new construction deadline.
12 See 47 C.F.R. § 90.175(j)(20
13 See 47 C.F.R. § 1.1116(a). Applicants in the Special Emergency Radio and Public Safety Radio Services are
generally fee-exempt. See 47 C.F.R. § 1.1116(b). Simple narrowbanding applications are fee-exempt pursuant to
Section 1.1116(a) of the Commission’s Rules, which exempts applications filed for the sole purpose of modifying a
license in order to comply with new requirements of the Commission’s rules. In order to file under the fee
exemption, the applicant filling out FCC Form 601 must enter ‘yes’ responses to Items 9 (exempt from the
application fee) and 10 (exempt from the regulatory fee). In addition, the applicant must respond ‘yes’ to Item 8 on
Form 601 and submit an attachment explaining why the application is fee-exempt. The attachment type should be
the 'fee exemption' attachment. It is recommended that licensees reference Section 1.1116(a) in the attachment
explanation field, and indicate that the filing was made exclusively to comply with the Commission's narrowbanding
Guidance for Licensees with Waivers that Need New Wideband-Capable EquipmentSome licensees that have been granted waivers of the narrowbanding deadline may need new
wideband-capable equipment for use while they transition from wideband operation to narrowband
operation. These licensees may petition their licensing Bureau(s) for a waiver of Section 90.203(j)(10),
which prohibits the continued manufacture or importation of wideband-capable equipment. Such a
request should be submitted on behalf of the licensee’s equipment provider and should seek a waiver to
permit the vendor to manufacture or import new wideband-capable equipment solely for sale to the
petitioning licensee or to authorize the equipment provider to reprogram inherently wideband-capable
equipment solely to enable the petitioning licensee to access the wideband mode.14 In support of its
request, a licensee should reference its existing waiver, document its continued progress towards
narrowband compliance, provide the approximate number of wideband-capable units that it anticipates
needing during its narrowbanding transition, and explain why its plans and/or circumstances require more
wideband-capable equipment than the licensee already has. Licensees may use preexisting vendor
statements of work or contracts to document this information.
Additional Narrowbanding Information
Should a licensee that currently employs narrowband-equivalent technology on 25 kilohertz
channels affirmatively certify that it meets the narrowband spectrum efficiency standard?
equivalent systems from non-compliant wideband systems, existing narrowband-equivalent licensees
must provide a separate certification with each license to show that their equipment meets the narrowband
efficiency standard. Licensees may file this certification as an attachment to an administrative update for
their affected licenses ("Rule 90.209(b)(6) Certification" should be selected in the Add Attachment Type
drop down list). In addition, when filing for renewal or for new or expanded wideband operations,
applicants who have not previously certified narrowband equivalence must respond ‘yes’ to Item 8 on the
FCC Form 601 and submit an attachment explaining that the proposed operations meet the narrowband
In all cases, the applicant must include the equipment’s FCC ID number with the attachment or
certification, which will enable Commission licensing staff to confirm that the equipment operates in a
narrowband-equivalent mode. If necessary, Commission staff will seek further information from the
Does the automatic renewal of a wideband-only authorization constitute a waiver of the
examining the emission designator on the license, this does not relieve licensees of the obligation to
operate in accordance with the Commission’s rules. Therefore, wideband-only licensees who receive an
automatic renewal remain responsible for complying with the narrowband rules and the guidance
contained in this Public Notice.
14 See Dane County Letter Order, DA 13-181 (rel. Feb. 11, 2013).
What are the potential enforcement consequences of unauthorized wideband operation or falsely
claiming narrowband status while continuing wideband operation?
the Commission extending the deadline are in violation of these rules. Licensees who operate in violation
of the Commission’s rules or the terms of the licensee’s license, or who cause harmful interference to
another licensee, may be subject to appropriate enforcement action. Such enforcement action may include
admonishments, license revocation, and/or monetary forfeitures of up to $16,000 for each such violation
or each day of a continuing violation, and up to $112,500 for any single act or failure to act.15
Willful false statements to the Commission are punishable by fine and/or imprisonment (U.S.
Code, Title 18, section 1001), and/or revocation of any station license or construction permit (U.S. Code,
Title 47, section 312(a)(1)), and/or forfeiture (U.S. Code, title 47, Section 503)
If I have information regarding a possible violation of the narrowbanding rules, how do I file a
complaint with the FCC?
violations of the narrowbanding rules, please visit www.fcc.gov/complaints, or call 1-888-CALL-FCC (1-
888-225-5322) voice or 1-888-TELL-FCC (1-888-835-5322) TTY.
In addition, licensees and frequency coordinators may contact Mr. Melvin Spann of the Wireless
Telecommunications Bureau, Mobility Division, (202) 418-1333, Melvin.Spann@fcc.gov, or Mr. Roberto
Mussenden of the Public Safety and Homeland Security Bureau, Policy Division, (202) 418-1428,
Roberto.Mussenden@fcc.gov. Equipment manufacturers may contact Mr. Andy Leimer of the Office of
Engineering and Technology, (301) 362-3049, Andrew.Leimer@fcc.gov.
- FCC -
15 See 47 U.S.C. §§ 401, 501, 503; 47 C.F.R. § 1.80(b)(7). This amount is subject to further adjustment for inflation.
47 C.F.R. § 1.80(b)(9). Other statutory amounts may apply based on the status of the licensee. See 47 C.F.R.
1.80(b)(1)-(6). In addition, in determining the amount of the forfeiture penalty, the Commission may consider other
statutory factors, such as “the nature, circumstances, extent, and gravity of the violation and, with respect to the
violator, the degree of culpability, any history of prior offenses, ability to pay, and such other matters as justice may
require.” See 47 U.S.C. § 503(b)(2)(E); 47 C.F.R. § 1.80(b)(8).