Goto Section: 95.977 | 95.987 | Table of Contents
FCC 95.979
Revised as of October 5, 2017
Goto Year:2016 |
2018
§ 95.979 CBRS unwanted emissions limits.
Each CBRS transmitter type must be designed to comply with the
applicable unwanted emissions limits in this section.
(a) Attenuation requirements. The power of unwanted emissions must be
attenuated below the transmitter output power in Watts (P) as specified
in the applicable paragraphs listed in the following table:
Emission type Paragraph
A3E (1), (3), (5), (6)
H3E, J3E, R3E (2), (4), (5), (6)
(1) 25 dB (decibels) in the frequency band 4 kHz to 8 kHz removed from
the channel center frequency;
(2) 25 dB in the frequency band 2 kHz to 6 kHz removed from the channel
center frequency;
(3) 35 dB in the frequency band 8 kHz to 20 kHz removed from the
channel center frequency;
(4) 35 dB in the frequency band 6 kHz to 10 kHz removed from the
channel center frequency;
(5) 53 + 10 log (P) dB in any frequency band removed from the channel
center frequency by more than 250% of the authorized bandwidth.
(6) 60 dB in any frequency band centered on a harmonic (i.e., an
integer multiple of two or more times) of the carrier frequency.
(b) Measurement bandwidths. The power of unwanted emissions in the
frequency bands specified in paragraphs (a)(1) through (4) of this
section is measured with a reference bandwidth of 300 Hz. The power of
unwanted emissions in the frequency ranges specified in paragraphs
(a)(5) and (6) of this section is measured with a reference bandwidth
of at least 30 kHz.
(c) Measurement conditions and procedures. Subject to additional
measurement standards and procedures established pursuant to part 2,
subpart J, the following conditions and procedures must be used.
(1) The unwanted emissions limits requirements in this section must be
met both with and without the connection of permitted attachments, such
as external speakers, microphones, power cords and/or antennas.
(2) Either mean power output or peak envelope power output may be used
for measurements, as appropriate for the emission type under test,
provided that the same type of power measurement is used for both the
transmitter output power and the power of the unwanted emissions.
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Goto Section: 95.977 | 95.987
Goto Year: 2016 |
2018
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