|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.
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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 C_Intentional Radiators
Sec. 15.204 External radio frequency power amplifiers and antenna
(a) Except as otherwise described in paragraphs (b) and (d) of this
section, no person shall use, manufacture, sell or lease, offer for sale
or lease (including advertising for sale or lease), or import, ship, or
distribute for the purpose of selling or leasing, any external radio
frequency power amplifier or amplifier kit intended for use with a part
15 intentional radiator.
(b) A transmission system consisting of an intentional radiator, an
external radio frequency power amplifier, and an antenna, may be
authorized, marketed and used under this part. Except as described
otherwise in this section, when a transmission system is authorized as a
system, it must always be marketed as a complete system and must always
be used in the configuration in which it was authorized.
(c) An intentional radiator may be operated only with the antenna
with which it is authorized. If an antenna is marketed with the
intentional radiator, it shall be of a type which is authorized with the
intentional radiator. An intentional radiator may be authorized with
multiple antenna types.
(1) The antenna type, as used in this paragraph, refers to antennas
have similar in-band and out-of-band radiation patterns.
(2) Compliance testing shall be performed using the highest gain
antenna for each type of antenna to be certified with the intentional
radiator. During this testing, the intentional radiator shall be
operated at its maximum available output power level.
(3) Manufacturers shall supply a list of acceptable antenna types
with the application for equipment authorization of the intentional
(4) Any antenna that is of the same type and of equal or less
directional gain as an antenna that is authorized with the intentional
radiator may be marketed with, and used with, that intentional radiator.
No retesting of this system configuration is required. The marketing or
use of a system configuration that employs an antenna of a different
type, or that operates at a higher gain, than the antenna authorized
with the intentional radiator is not permitted unless the procedures
specified in Sec. 2.1043 of this chapter are followed.
(d) Except as described in this paragraph, an external radio
frequency power amplifier or amplifier kit shall be marketed only with
the system configuration with which it was approved and not as a
(1) An external radio frequency power amplifier may be marketed for
individual sale provided it is intended for use in conjunction with a
transmitter that operates in the 902-928 MHz, 2400-2483.5 MHz, and 5725-
5850 MHz bands pursuant to Sec. 15.247 of this part or a transmitter
that operates in the 5.725-5.825 GHz band pursuant to Sec. 15.407 of
this part. The amplifier must be of a design such that it can only be
connected as part of a system in which it has been previously
authorized. (The use of a non-standard connector or a form of electronic
system identification is acceptable.) The output power of such an
amplifier must not exceed the maximum permitted output power of its
(2) The outside packaging and user manual for external radio
frequency power amplifiers sold in accordance with paragraph (d)(1) of
this section must include notification that the amplifier can be used
only in a system which it has obtained authorization. Such a notice must
identify the authorized system by FCC Identifier.
[69 FR 54034, Sept. 7, 2004]