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FCC Part 15 Radio Frequency Devices
Section 15.204

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
[CITE: 47CFR15.204]
[Page 802-803]
                       TITLE 47--TELECOMMUNICATION
                     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 
[[Page 803]]
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 
separate product.
    (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 
associated transmitter.
    (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]

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