Sec. 80.211  Emission limitations.

    The emissions must be attenuated according to the following 
schedule.
    (a) The mean power when using emissions H3E, J3E and R3E:
    (1) On any frequency removed from the assigned frequency by more 
than 50 percent up to and including 150 percent of the authorized 
bandwidth:

    at least 25 dB for transmitters installed before February 1, 1992,
    at least 28 dB for transmitters installed on or after February 1, 
1992;

    (2) On any frequency removed from the assigned frequency by more 
than 150 percent up to and including 250 percent of the authorized 
bandwidth: At least 35 dB; and
    (3) On any frequency removed from the assigned frequency by more 
than 250 percent of the authorized bandwidth: At least 43 plus 
10log10 (mean power in watts) dB.
    (b) For transmitters operating in the band 1626.5-1646.5 MHz. In any 
4 kHz band the mean power of emissions shall be attenuated below the 
mean output power of the transmitter as follows:
    (1) Where the center frequency is removed from the assigned 
frequency by more than 50 percent up to and including 100 percent of the 
authorized bandwidth: At least 25 dB;
    (2) Where the center frequency is removed from the assigned 
frequency by more than 100 percent up to 250 percent of the authorized 
bandwidth: At least 35 dB; and
    (3) On any frequency removed from the assigned frequency by more 
than 250 percent of the authorized bandwidth: At least 43 plus 
10log10 (mean power in watts) dB.
    (c) In any 4 kHz band the peak power of spurious emissions and noise 
at the input to the transmit antenna must be attenuated below the peak 
output power of the station as follows:
    (1) 125 dB at 1525.0 MHz, increasing linearly to 90 dB at 1612.5 
MHz;
    (2) 90 dB at 1612.5 MHz increasing linearly to 60 dB at 1624.0 MHz;
    (3) 90 dB from 1624.0 MHz to 1650.0 MHz, except at frequencies near 
the transmitted carrier where the requirements of paragraphs (b)(1) 
through (3) of this section, apply;
    (4) 60 dB at 1650.0 MHz decreasing linearly to 90 dB at 1662.5 MHz;
    (5) 90 dB at 1662.5 MHz decreasing linearly to 125 dB at 1752.5 MHz; 
and
    (6) 125 dB outside above range, except for harmonics which must 
comply with (b)(3) of this section.
    (d) The mean power of emissions from radiotelephone survival craft 
transmitters, 9 GHz search and rescue transponders, and radiotelegraph 
survival craft transmitters must be attenuated below the mean output 
power of the transmitter as follows:
    (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 dB;
    (2) On any frequency removed from the assigned frequency by more 
than 100 percent of the authorized bandwidth: at least 30 dB.
    (e) The mean power of EPIRBs operating on 121.500 MHz, 243.000 MHz 
and 406.025 MHz must be as follows:
    (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 dB;
    (2) On any frequency removed from the assigned frequency by more 
than 100 percent: at least 30 dB.
    (f) The mean power when using emissions other than those in 
paragraphs (a), (b), (c) and (d) of this section:
    (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 dB;
    (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 dB; and

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    (3) On any frequency removed from the assigned frequency by more 
than 250 percent of the authorized bandwidth: At least 43 plus 
10log10 (mean power in watts) dB.
    (g) Developmental stations must conform to the standards for regular 
authorized stations.
[ 51 FR 31213 , Sept. 2, 1986, as amended at  54 FR 40058 , Sept. 29, 1989; 
 54 FR 49994 , Dec. 4, 1989;  56 FR 11516 , Mar. 19, 1991;  62 FR 40306 , July 
28, 1997]