|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
Sec. 15.21 Information to user.
The users manual or instruction manual for an intentional or
unintentional radiator shall caution the user that changes or
modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment. In
cases where the manual is provided only in a form other than paper, such
as on a computer disk or over the Internet, the information required by
this section may be included in the manual in that alternative form,
provided the user can reasonably be expected to have the capability to
access information in that form.
[54 FR 17714, Apr. 25, 1989, as amended at 68 FR 68545, Dec. 9, 2003]