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FCC Part 15 Radio Frequency Devices
Section 15.223

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: 47CFR15.223]
[Page 810]
                       TITLE 47--TELECOMMUNICATION
                     Subpart C_Intentional Radiators
Sec. 15.223  Operation in the band 1.705-10 MHz.
    (a) The field strength of any emission within the band 1.705-10.0 
MHz shall not exceed 100 microvolts/meter at a distance of 30 meters. 
However, if the bandwidth of the emission is less than 10% of the center 
frequency, the field strength shall not exceed 15 microvolts/meter or 
(the bandwidth of the device in kHz) divided by (the center frequency of 
the device in MHz) microvolts/meter at a distance of 30 meters, 
whichever is the higher level. For the purposes of this section, 
bandwidth is determined at the points 6 dB down from the modulated 
carrier. The emission limits in this paragraph are based on measurement 
instrumentation employing an average detector. The provisions in Sec. 
15.35(b) for limiting peak emissions apply.
    (b) The field strength of emissions outside of the band 1.705-10.0 
MHz shall not exceed the general radiated emission limits in Sec. 

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