|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 C_Intentional Radiators
Sec. 15.217 Operation in the band 160-190 kHz.
(a) The total input power to the final radio frequency stage
(exclusive of filament or heater power) shall not exceed one watt.
(b) The total length of the transmission line, antenna, and ground
lead (if used) shall not exceed 15 meters.
(c) All emissions below 160 kHz or above 190 kHz shall be attenuated
at least 20 dB below the level of the unmodulated carrier. Determination
of compliance with the 20 dB attenuation specification may be based on
measurements at the intentional radiator's antenna output terminal
unless the intentional radiator uses a permanently attached antenna, in
which case compliance shall be demonstrated by measuring the radiated