5720 Main St
Mays Landing NJ 08330
Who is required to narrowband?
All Public Safety and Industrial/Business licensees in the 150-174 MHz (VHF)
and 421-512 MHz (UHF) bands
What is required?
By January 1, 2013, licensees must migrate their systems from 25 kHz
(wideband) to 12.5 kHz (narrowband) channel bandwidth or a technology that
achieves equivalent efficiency Narrowbanding ensures more efficient use of the
spectrum and greater spectrum access for public safety and non-public safety
users. Will relieve congestion in and result in increased channel availability
for public safety VHF/UHF systems. Narrowbanding has been consistently
supported by the public safety community, including APCO, NPSTC, and other
All licensees must complete narrowbanding to 12.5 kHz by January 1, 2013
FCC will also no longer allow manufacture or importation of equipment that
includes a 25 kHz mode.
Some interim requirements take effect on January 1, 2011: 12.5 kHz operation
required for all new VHF/UHF systems or expansion of existing systems. FCC
will not certify new equipment that includes a 25 KHz mode.
After January 1, 2013, FCC interference rules will not protect non-compliant
wideband systems from harmful interference
Systems that fail to narrowband by the deadline could create interference or
interoperability problems for systems that have narrow banded. Wideband
equipment will not be available after January 1, 2013. The Commission has
recently reaffirmed the January 1, 2013 deadline. Licensees facing unique
circumstances may request waivers, but waiver requests must meet a high
standard and are not routinely granted. Licensees concerned about meeting the
deadline should focus on planning and preparation. Informal contact with the
Bureau is encouraged prior to any filing.
Narrowbanding rules provide for eventual migration from 12.5 kHz to 6.25 kHz
bandwidth. Intended to further increase efficiency and channel
availability. The FCC has not set a deadline for 6.25 kHz implementation. No
deadline will be established without further notice and comment. Licensees may
narrowband to 6.25 kHz voluntarily. All 150-174 MHz and 421-512 MHz equipment
certified after January 1, 2013 must include 6.25 kHz capability.
Prepare NOW – January 1, 2013 is approaching fast!|
Determine how narrowbanding will affect your system |
Will existing equipment need replacement/retuning? |
Will additional sites be needed to maintain coverage?|
Is coordination with neighboring systems required?|
Develop a compliance plan|
Funding requirements |
Contact us at 609-625-1915 or fill out the form below for a free
All VHF/UHF equipment certified since 1997 has 12.5 kHz capability.
Many systems have equipment with dual 25 kHz/12.5 kHz capability, making the
narrowbanding transition easier. Check with Dallas Mobile to determine whether
your existing system equipment is narrowband-capable or needs
Cost of narrowbanding will vary depending on the nature of each
licensee’s existing system
Narrowbanding generally does not require a system upgrade, though licensees
may combine narrowbanding with other scheduled upgrades or modifications.
Narrowbanding costs may be more substantial for older systems that require
replacement of existing equipment. Funding to support narrowbanding may be
available through federal grant programs.
Licensees should modify their licenses to add a narrowband emission
designator prior to commencing narrowband operations. Licensees may maintain
both narrowband and wideband designators on their licenses while they are
transitioning their systems. Once the narrowband transition is complete,
licensees should modify their licenses by removing the wideband emission