Goto Section: 15.214 | 15.216 | Table of Contents
FCC 15.215
Revised as of October 1, 2014
Goto Year:2013 |
2015
§ 15.215 Additional provisions to the general radiated emission
limitations.
(a) The regulations in § § 15.217 through 15.257 provide alternatives
to the general radiated emission limits for intentional radiators
operating in specified frequency bands. Unless otherwise stated, there
are no restrictions as to the types of operation permitted under these
sections.
(b) In most cases, unwanted emissions outside of the frequency bands
shown in these alternative provisions must be attenuated to the
emission limits shown in § 15.209. In no case shall the level of the
unwanted emissions from an intentional radiator operating under these
additional provisions exceed the field strength of the fundamental
emission.
(c) Intentional radiators operating under the alternative provisions to
the general emission limits, as contained in § § 15.217 through 15.257
and in subpart E of this part, must be designed to ensure that the 20
dB bandwidth of the emission, or whatever bandwidth may otherwise be
specified in the specific rule section under which the equipment
operates, is contained within the frequency band designated in the rule
section under which the equipment is operated. In the case of
intentional radiators operating under the provisions of subpart E, the
emission bandwidth may span across multiple contiguous frequency bands
identified in that subpart. The requirement to contain the designated
bandwidth of the emission within the specified frequency band includes
the effects from frequency sweeping, frequency hopping and other
modulation techniques that may be employed as well as the frequency
stability of the transmitter over expected variations in temperature
and supply voltage. If a frequency stability is not specified in the
regulations, it is recommended that the fundamental emission be kept
within at least the central 80% of the permitted band in order to
minimize the possibility of out-of-band operation.
[ 54 FR 17714 , Apr. 25, 1989, as amended at 62 FR 45333 , Aug. 27, 1997;
67 FR 34855 , May 16, 2002; 69 FR 3265 , Jan. 23, 2004; 70 FR 6774 , Feb.
9, 2005; 79 FR 24578 , May 1, 2014]
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Goto Section: 15.214 | 15.216
Goto Year: 2013 |
2015
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