Sec. 80.215  Transmitter power.

    (a) Transmitter power shown on the radio station authorization is 
the maximum power the licensee is authorized to use. Power is expressed 
in the following terms:
    (1) For single sideband emission: Peak evelope power;
    (2) For G3E emission: Carrier power;
    (3) For PON and F3N emission: Mean power;
    (4) For all emissions in the 1626.5-1646.5 MHz band: equivalent 
isotropic radiated power.
    (5) For all other emissions: the carrier power multiplied by 1.67.
    (b) Coast station frequencies below 27500 kHz. The maximum power 
must not exceed the values listed below.

    (1) Public coast stations, except Alaska:
    (i) Radiotelegraphy:

100-160 kHz--80kW
405-525 kHz--40kW
2035-2065 kHz--6.6kW
4000-8000 kHz--10kW
8000-9000 kHz--20kW
12000-27500 kHz--30kW

    (ii) Radiotelephony:

2000-4000 kHz--day--800W
2000-4000 kHz--night--400W
4000-27500 kHz--10kW

    (2) Private coast stations, except in Alaska: 1kW
    (3) Coast stations in Alaska, public and private:

405-525 kHz--265W
1605-12000 kHz--150W

    (c) Coast station frequencies above 27500 kHz. The maximum power 
must not exceed the values listed below.
    (1) Coast stations:

156-162 MHz--50W \1\,\12\
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    \1\ Maximum authorized power at the input terminals of the station 
antenna.
---------------------------------------------------------------------------

216-220 MHz \2\
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    \2\ See paragraph (h) of this section.

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    (2) Marine utility stations:

156-162 MHz--10W

    (d) Ship station frequencies below 27500 kHz. The maximum power must 
not exceed the values listed below:
    (1) Radiotelegraphy: All ships--2kW \3\
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    \3\ For passenger ships 5000 gross tons and over--8kW. For cable-
repair ships operating on radiodetermination frequencies, 15 watts; see 
Sec. 80.375(b).
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    (2) Radiotelephony:
    (i) All ships--Great Lakes and Inland Waters--150W

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    (ii) All ships--Open waters; 2000-4000 kHz--150W

2182 kHz--emergency, urgency, or safety ship to shore--400W \4\

    \4\ For passenger ships 5000 gross tons and over--1kW.
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    (iii) All ships--Open waters; 4000-27500 kHz--1.5kW \5\.
---------------------------------------------------------------------------

    \5\ For passenger ships 5,000 gross tons and over 3kW.
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    (3) Digital selective calling:

All ships 415-526.5 kHz--400 W
All ships 1605-4000 kHz--400 W
All ships 4000-27500 kHz--1.5 kW

    (e) Ship stations frequencies above 27500 kHz. The maximum power 
must not exceed the values listed below.
    (1) Ship stations 156-162 MHz--25W \6\
---------------------------------------------------------------------------

    \6\ Reducible to 1 watt or less, except for transmitters limited to 
public correspondence channels and used in an automated system.
---------------------------------------------------------------------------

    Marine utility stations and hand-held portable transmitters 156-162 
MHz--10W
    (2) Ship stations 216-220 MHz--25W \7\
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    \7\ Reducible to 2.5 watts or less; see paragraph (i) of this 
section.
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    (3) On board stations 456-468 MHz--4W \8\
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    \8\ Type acceptance based on a carrier power of 4 watts with 
transmitter connected to a dummy load of matching impedance. The 
effective radiated power must not exceed 2 watts.
---------------------------------------------------------------------------

    (4) Ship earth stations 1626.5-1646.5 MHz \9\
---------------------------------------------------------------------------

    \9\ See paragraph (k) of this section.
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    (5) Ship radar stations with F3N emission--200 mW
    (6) EPIRB--121.500 and 243.00 MHz \10\
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    \10\ See subpart V of this part.
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    (7) EPIRB--156.750 and 156.800 MHz \10\
    (f) Fixed stations. The maximum power must not exceed the values 
listed below.
    (1) Maritime support (receiver test):

R3E and J3C emission--150W
F3E emission--50W

    (2) Operational fixed: 72-76 MHz and above 162 MHz \11\
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    \11\ See paragraph (l) of this section.
    \12\ The frequencies 156.375 MHz and 156.650 MHz are primarily 
intership frequencies. When authorized for coast stations on a secondary 
basis, the normal output power must not exceed 1 watt and the maximum 
output power must not exceed 10 watts.
---------------------------------------------------------------------------

    (3) Alaska--Private fixed:
10-200 kHz--650W
405-525 kHz--265W
1605-12000 kHz--150W

    (4) Alaska--Public fixed:

405-525 kHz--1kW
1605-12000 kHz--1kW

    (g) The carrier power of ship station radiotelephone transmitters, 
except portable transmitters, operating in the 156-162 MHz band must be 
at least 8 but not more than 25 watts. Transmitters that use 12 volt 
lead acid storage batteries as a primary power source must be measured 
with a primary voltage between 12.2 and 13.7 volts DC. Additionally, 
unless otherwise indicated, equipment in radiotelephone ship stations 
operating in the 156-162 MHz band must meet the following requirements:
    (1) All transmitters must be capable of reducing the carrier power 
to one watt or less;
    (2) All remote control units that are used with transmitters 
manufactured after August 31, 1979, or installed after February 29, 
1980, must be capable of causing the carrier power to be reduced to one 
watt or less;
    (3) Except as indicated in (4) of this paragraph, all transmitters 
manufactured after January 21, 1987, or in use after January 21, 1997, 
must automatically reduce the carrier power to one watt or less when the 
transmitter is tuned to 156.375 MHz or 156.650 MHz, and must be provided 
with a manual override switch which when held by an operator will permit 
full carrier power operation on 156.375 MHz and 156.650 MHz;
    (4) Hand-held portable transmitters are not required to comply with 
the automatic reduction of carrier power in (g)(3) of this section; and
    (5) Transmitters dedicated for use on public correspondence duplex 
channels as additional equipment to a VHF ship station in the Great 
Lakes which meet all pertinent rules in this part are not required to 
reduce their carrier power to one watt.
    (h) Coast stations in an AMTS may radiate as follows, subject to the 
condition that no harmful interference will be caused to television 
reception except that TV services authorized subsequent to the filing of 
the AMTS station application will not be protected.

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    (1) When located more than 169 kilometers (105 miles) from the 
antenna of a Channel 13 TV station and more than 129 kilometers (80 
miles) from the antenna of a channel 10 station, the ERP of coast 
stations having an antenna height of 61 meters (200 feet) or less above 
ground must not exceed 1000 watts.
    (2) Coast stations located less than 169 kilometers (105 miles) from 
a Channel 13 TV station, or less than 129 kilometers (80 miles) from a 
channel 10 station or when using a transmitting antenna height above 
ground greater than 61 meters (200 feet), must submit a plan to limit 
interference to TV reception. The plan must include:
    (i) A description of the interference contour with indentification 
of the method used to determine this contour; and
    (ii) A statement concerning the number of residences within the 
interference contour. The interference contour includes only areas 
inside the TV grade B contour with the latter determined assuming 
maximum permissible TV antenna height and power for broadcast stations 
and the actual facility parameters for translators and low power TV 
stations. See part 73, subpart E of this chapter for further information 
on TV grade B contour determination.
    (3) When located as described in paragraph (h)(2) of this section, 
the coast station (or stations affecting the same TV Grade B contour) 
will be authorized if the applicant's plan has limited the interference 
contour(s) to fewer than 100 residences or if the applicant:
    (i) Shows that the proposed site is the only suitable location;
    (ii) Develops a plan to control any interference caused to TV 
reception within the Grade B contour from its operations; and
    (iii) Agrees to make such adjustments in the TV receivers affected 
as may be necessary to eliminate interference caused by its operations.
    (4) The applicant must eliminate any interference caused by its 
operation to TV reception within the Grade B contour that might develop 
within 90 days of the time it is notified in writing by the Commission. 
If this interference is not removed within the 90-day period, operation 
of the coast station must be discontinued. The licensee is expected to 
help resolve all complaints of interference, whether inside or outside 
the Grade B contour.
    (5) The transmitter output power must be 50 watts or less.
    (i) A ship station must have a transmitter output power not 
exceeding 25 watts and an ERP not exceeding 18 watts. The transmitter 
must include the capability to reduce the carrier power to 2.5 watts 
with a front panel control. The maximum transmitter output power is 
permitted to be increased to 50 watts under the following conditions:
    (1) Increases exceeding 25 watts are made only by radio command from 
the controlling coast stations; and
    (2) The application for an equipment authorization demonstrates that 
the transmitter output power is 25 watts or less when external radio 
commands are not present.
    (j) A ship installation with a transmitter output power exceeding 25 
watts under the conditions of paragraph (i) of this section is exempted 
from the limitation of 18 watts ERP when operating in specific 
geographical areas identified in a plan for the use of higher power.
    (k) Within the 1626.5-1646.5 MHz band the maximum e.i.r.p by a ship 
earth station in any direction in the horizontal plane or in the 
direction of the space station must not exceed +40 dB relative to one 
watt in any 4 kHz band in the main beam, except upon a satisfactory 
showing of need for greater power, in which case a maximum of +55 dB 
relative to one watt may be authorized.
    (l) For operational fixed stations using frequencies in the 72-76 
MHz band and for other classes of stations operating above 162.025 MHz, 
the transmitter power must be specified in the station authorization. 
Frequencies in the 72-76 MHz band are listed in Sec. 80.381. The 
operational requirements for 72-76 MHz are contained in subpart L of 
this part.
    (m) For radiodetermination transmitters using A1D, A2D, F1D, F2D, 
G1D and G2D emissions on 154.585 MHz, 159.480 MHz, 160.725 MHz, 160.785 
MHz, 454.000 MHz and 459.000 MHz the mean

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output power of the unmodulated carrier must not exceed 25 watts.
    (n) For radiodetermination stations operating above 2400 MHz the 
output power must be as follows:
    (1) For radar stations that use F3N emission the mean output power 
must not exceed 200 milliwatts;
    (2) For search and rescue stations the output power must be at least 
400 milliwatts peak e.i.r.p.
    (3) For all other transponder stations the output power must not 
exceed 20 watts peak e.i.r.p. Licensees of non-selectable transponder 
coast stations operating in the 2920-3100 MHz and 9320-9500 MHz bands 
must notify in writing the USCG District Commander of any incremental 
increase of their station's output power above 5 watts peak e.i.r.p.
[ 51 FR 31213 , Sept. 2, 1986, as amended at  52 FR 7419 , Mar. 11, 1987;  52 FR 35244 , Sept. 18, 1987;  54 FR 40058 , Sept. 29, 1989;  54 FR 49994 , Dec. 
4, 1989;  56 FR 3783 , Jan. 31, 1991;  59 FR 35269 , July 11, 1994]