Goto Section: 23.14 | 23.16 | Table of Contents
FCC 23.15
Revised as of October 1, 2008
Goto Year:2007 |
2009
Sec. 23.15 Emission limitations.
(a) For all transmitters placed into operation after September 19, 1973, and
for all transmitters after September 19, 1975, which operate on frequencies
below 30 MHz:
(1) The occupied bandwidth of emission shall be confined within the least
possible spectrum space consistent with the state of the art and the
required quality of transmission, and in no event shall be more than the
authorized bandwidth.
(2) Spurious emissions of transmitters of mean power of 50 kilowatts or less
shall be attenuated at least 40 decibels below the mean power of the
fundamental without exceeding the power of 50 milliwatts.
(3) Spurious emissions of transmitters of mean power exceeding 50 kilowatts
shall be attenuated at least 60 decibels below the mean power of the
fundamental and every effort should be made to keep the level of spurious
emissions below the power of 50 milliwatts.
(b) For all transmitters placed into operation after September 19, 1973, and
for all transmitters after September 19, 1975, which operate on frequencies
above 30 MHz, the mean powers of emissions shall be attenuated below the
mean output power of the transmitter in accordance with the following
schedule:
(1) On any frequency removed from the assigned frequency by more than 50
percent up to and including 100 percent of the authorized bandwidth: At
least 25 decibels;
(2) On any frequency removed from the assigned frequency by more than 100
percent up to and including 250 percent of the authorized bandwidth: at
least 35 decibels;
(3) On any frequency removed from the assigned frequency by more than 250
percent of the authorized bandwidth: at least 43 plus 10 log (mean output
power in watts) decibels, or 80 decibels, whichever is the lesser
attenuation.
(c) When an emission outside of the authorized bandwidth causes harmful
interference, the Commission may, at its discretion, require greater
attenuation than that specified in this section.
[ 38 FR 22479 , Aug. 21, 1973; 38 FR 24901 , Sept. 11, 1973]
Goto Section: 23.14 | 23.16
Goto Year: 2007 |
2009
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