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FCC Part 15 Radio Frequency Devices
Section 15.243

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: 47CFR15.243]
[Page 817-818]
                       TITLE 47--TELECOMMUNICATION
                     Subpart C_Intentional Radiators
Sec. 15.243  Operation in the band 890-940 MHz.
    (a) Operation under the provisions of this section is restricted to 
devices that use radio frequency energy to measure the characteristics 
of a material. Devices operated pursuant to the provisions of this 
section shall not be used for voice communications or the transmission 
of any other type of message.
    (b) The field strength of any emissions radiated within the 
specified frequency band shall not exceed 500 microvolts/meter at 30 
meters. The emission limit in this paragraph is based on measurement 
instrumentation employing an average detector. The provisions in Sec. 
15.35 for limiting peak emissions apply.
    (c) The field strength of emissions radiated on any frequency 
outside of the specified band shall not exceed the general radiated 
emission limits in Sec. 15.209.
    (d) The device shall be self-contained with no external or readily 
[[Page 818]]
controls which may be adjusted to permit operation in a manner 
inconsistent with the provisions in this section. Any antenna that may 
be used with the device shall be permanently attached thereto and shall 
not be readily modifiable by the user.

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