Goto Section: 15.214 | 15.216 | Table of Contents
FCC 15.215
Revised as of October 2, 2015
Goto Year:2014 |
2016
§ 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: 2014 |
2016
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