|The Federal Communications Commission (FCC) is the authority
in the United States of America that creates and enforces the use of airwaves throughout the entire
radio frequency spectrum. This group of documents contains the entirety of the
FCC Part 15 regulations
that concern unlicensed radio frequency devices. As with all government documents, this material
is in the public domain and may be freely copied so long as the content is not changed. This copy
is provided as a convenience for RF Cafe visitors.
Click here for the
Table of Contents.
[Code of Federal Regulations]
[Title 47, Volume 1]
[Revised as of October 1, 2008]
From the U.S. Government Printing Office via GPO Access
CHAPTER I--FEDERAL COMMUNICATIONS COMMISSION
PART 15_RADIO FREQUENCY DEVICES--Table of Contents
Subpart B_Unintentional Radiators
Sec. 15.121 Scanning receivers and frequency converters used with scanning receivers.
(a) Except as provided in paragraph (c) of this section, scanning
receivers and frequency converters designed or marketed for use with
scanning receivers, shall:
(1) Be incapable of operating (tuning), or readily being altered by
the user to operate, within the frequency bands allocated to the
Cellular Radiotelephone Service in part 22 of this chapter (cellular
telephone bands). Scanning receivers capable of ``readily being altered
by the user'' include, but are not limited to, those for which the
ability to receive transmissions in the cellular telephone bands can be
added by clipping the leads of, or installing, a simple component such
as a diode, resistor or jumper wire; replacing a plug-in semiconductor
chip; or programming a semiconductor chip using special access codes or
an external device, such as a personal computer. Scanning receivers, and
frequency converters designed for use with scanning receivers, also
shall be incapable of converting digital cellular communication
transmissions to analog voice audio.
(2) Be designed so that the tuning, control and filtering circuitry
is inaccessible. The design must be such that any attempts to modify the
equipment to receive transmissions from the Cellular Radiotelephone
Service likely will render the receiver inoperable.
(b) Except as provided in paragraph (c) of this section, scanning
receivers shall reject any signals from the Cellular Radiotelephone
Service frequency bands that are 38 dB or lower based upon a 12 dB SINAD
measurement, which is considered the threshold where a signal can be
clearly discerned from any interference that may be present.
(c) Scanning receivers and frequency converters designed or marketed
for use with scanning receivers, are not subject to the requirements of
paragraphs (a) and (b) of this section provided that they are
manufactured exclusively for, and marketed exclusively to, entities
described in 18 U.S.C. 2512(2), or are marketed exclusively as test
equipment pursuant to Sec. 15.3(dd).
(d) Modification of a scanning receiver to receive transmissions
from Cellular Radiotelephone Service frequency bands will be considered
to constitute manufacture of such equipment. This includes any
individual, individuals, entity or organization that modifies one or
more scanners. Any modification to a scanning receiver to receive
transmissions from the Cellular Radiotelephone Service frequency bands
voids the certification of the scanning receiver, regardless of the date
of manufacture of the original unit. In addition, the provisions of
Sec. 15.23 shall not be interpreted as permitting modification of a
scanning receiver to receiver Cellular Radiotelephone Service
(e) Scanning receivers and frequency converters designed for use
with scanning receivers shall not be assembled from kits or marketed in
kit form unless they comply with the requirements in paragraph (a)
through (c) of this section.
(f) Scanning receivers shall have a label permanently affixed to the
product, and this label shall be readily visible to the purchaser at the
time of purchase. The label shall read as follows: WARNING: MODIFICATION
OF THIS DEVICE TO RECEIVE CELLULAR RADIOTELEPHONE SERVICE SIGNALS IS
PROHIBITED UNDER FCC RULES AND FEDERAL LAW.
(1) ``Permanently affixed'' means that the label is etched,
engraved, stamped, silkscreened, indelible printed or otherwise
permanently marked on a permanently attached part of the equipment or on
a nameplate of metal, plastic or other material fastened to
the equipment by welding, riveting, or permanent adhesive. The label
shall be designed to last the expected lifetime of the equipment in the
environment in which the equipment may be operated and must not be
readily detachable. The label shall not be a stick-on, paper label.
(2) When the device is so small that it is not practicable to place
the warning label on it, the information required by this paragraph
shall be placed in a prominent location in the instruction manual or
pamphlet supplied to the user and shall also be placed on the container
in which the device is marketed. However, the FCC identifier must be
displayed on the device.
[64 FR 22561, Apr. 27, 1999, as amended at 66 FR 32582, June 15, 2001]