Goto Section: 87.111 | 87.133 | Table of Contents

FCC 87.131
Revised as of October 1, 2006
Goto Year:2005 | 2007
Sec.  87.131   Power and emissions.

   The following table lists authorized emissions and maximum power. Power must
   be determined by direct measurement.


-------------------------------------------------------------------------------
---------------------------------
                                                                 Authorized emi
ssion(s)
          Class of station            Frequency band/frequency            \9\
             Maximum power \1\
-------------------------------------------------------------------------------
---------------------------------
Aeronautical advisory...............  VHF.....................  A3E............
........  10 watts.\10\
Aeronautical multicom...............  VHF.....................  A3E............
........  10 watts.
Aeronautical enroute and              HF......................  R3E, H3E, J3E,
J7B,      6 kw.
 aeronautical fixed.                                             H2B, J2D.
                                      HF......................  A1A, F1B, J2A,
J2B.....  1.5 kw.
                                      VHF.....................  A3E, A9W G1D, A
2D......
Aeronautical search and rescue......  VHF.....................  A3E............
........  10 watts.
                                      HF......................  R3E, H3E, J3E..
........  100 watts.
Operational fixed...................  VHF.....................  G3E, F2D.......
........  30 watts.
Flight test land....................  VHF.....................  A3E............
........  200 watts.
                                      UHF.....................  F2D, F9D, F7D..
........  25 watts.\3\
                                      HF......................  H2B, J3E, J7D,
J9W.....  6.0 kw.
Aviation support....................  VHF.....................  A3E............
........  50 watts.
Airport control tower...............  VHF.....................  A3E, G1D, G7D..
........  50 watts.
                                      Below 400 kHz...........  A3E............
........  15 watts.
Aeronautical utility mobile.........  VHF.....................  A3E............
........  10 watts.
Radionavigation land test...........  108.150 MHz.............  A9W............
........  1 milliwatt.
                                      334.550 MHz.............  A1N............
........  1 milliwatt.
                                      Other VHF...............  M1A, XXA, A1A,
A1N,      1 watt.
                                                                 A2A, A2D, A9W.
                                      Other UHF...............  M1A, XXA, A1A,
A1N,      1 watt.
                                                                 A2A, A2D, A9W.
                                      5031.0 MHz..............  F7D............
........  1 watt.
Radionavigation land................  Various \4\.............  Various \4\....
........  Various.\4\
                                     ------------------------------------------
---------------------------------
                                      Aeronautical Frequencies
                                     ------------------------------------------
---------------------------------
Aircraft (Communication)............  UHF.....................  F2D, F9D, F7D..
........  25 watts.
                                      VHF.....................  A3E, A9W, G1D,
G7D, A2D  55 watts.
                                      HF......................  R3E, H3E, J3E,
J7B,      400 watts.
                                                                 H2B, J7D, J9W.
                                      HF......................  A1A, F1B, J2A,
J2B.....  100 watts.
                                     ------------------------------------------
---------------------------------
                                      Marine Frequencies \5\..
                                     ------------------------------------------
---------------------------------
                                      156.300 MHz.............  G3E............
........  5 watts.
                                      156.375 MHz.............  G3E............
........  5 watts.
                                      156.400 MHz.............  G3E............
........  5 watts.
                                      156.425 MHz.............  G3E............
........  5 watts.
                                      156.450 MHz.............  G3E............
........  5 watts.
                                      156.625 MHz.............  G3E............
........  5 watts.
                                      156.800 MHz.............  G3E............
........  5 watts.
                                      156.900 MHz.............  G3E............
........  5 watts.
                                      157.425 MHz.............  G3E............
........  5 watts.
                                      HF \6\..................  R3E, H3E, J3E,
J2B,      1000 watts.
                                                                 F1B, A3E.
          250 watts.
                                      MF \6\..................  R3E, H3E, J3E,
J2B, F1B  1000 watts.
                                      HF \6\..................  A3E............
........  250 watts.
(Radionavigation)...................  Various \7\.............  Various \7\....
........  Various.\7\
Aircraft earth......................  UHF.....................  G1D, G1E, G1W..
........  60 watts.\8\
Differential GPS....................  VHF.....................  G7D............
........  Various.\2\
-------------------------------------------------------------------------------
---------------------------------
\1\ The power is measured at the transmitter output terminals and the type of p
ower is determined according to
  the emission designator as follows:
(i) Mean power (pY) for amplitude modulated emissions and transmitting both sid
ebands using unmodulated full
  carrier.
(ii) Peak envelope power (pX) for all emission designators other than those ref
erred to in paragraph (i) of this
  note.
\2\ Power and antenna height are restricted to the minimum necessary to achieve
 the required service.
\3\ Transmitter power may be increased to overcome line and duplexer losses but
 must not exceed 25 watts
  delivered to the antenna.
\4\ Frequency, emission, and maximum power will be determined after coordinatio
n with appropriate Government
  agencies.
\5\ To be used with airborne marine equipment certificated for part 80 (ship) a
nd used in accordance with part
  87.
\6\ Applicable onIy to marine frequencies used for public correspondence.
\7\ Frequency, emission, and maximum power will be determined by appropriate st
andards during the certification
  process.
\8\ Power may not exceed 60 watts per carrier, as measured at the input of the
antenna subsystem, including any
  installed diplexer. The maximum EIRP may not exceed 2000 watts per carrier.
\9\ Excludes automatic link establishment.
\10\ Power is limited to 0.5 watt, but may not exceed 2 watts when station is u
sed in an automatic unattended
  mode.

   [ 54 FR 11720 , Mar. 22, 1989, as amended at  57 FR 45749 , Oct. 5, 1992;  62 FR 40308 , July 28, 1997;  63 FR 36607 , July 7, 1998;  64 FR 27474 , May 20, 1999;
    66 FR 26798 , May 15, 2001;  69 FR 32880 , June 14, 2004]


Goto Section: 87.111 | 87.133

Goto Year: 2005 | 2007
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