Sec.  80.207   Classes of emission.

   (a) Authorization to use radiotelephone and radiotelegraph emissions by ship
   and coast stations includes the use of digital selective calling and
   selective calling techniques in accordance with  Sec. 80.225.

   (b) In radiotelegraphy communications employing a modulated carrier the
   carrier must be keyed and modulated by an audio frequency.

   (c) Authorization to use single sideband emission is limited to emitting a
   carrier;

   (1) For full carrier transmitters at a power level between 3 and 6 dB below
   peak envelope power;

   (2) For suppressed carrier transmitters at a power level at least 40 dB
   below peak envelope power; and

   (3) For reduced or variable level carrier:

   (i) In the 1600–4000 kHz band:

   (A) For coast station transmitters 18 ±2 dB below peak envelope power;

   (B) For ship station transmitters installed before January 2, 1982, 16 ±2 dB
   below peak envelope power; and

   (C) For ship station transmitters installed after January 1, 1982, 18 ±2 dB
   below peak envelope power.

   (ii) In the 4000–27500 kHz band:

   (A) For coast station transmitters 18 ±2 dB below peak envelope power;

   (B) For ship station transmitters installed before January 2, 1978, 16 ±2 dB
   below peak envelope power; and

   (C) For ship station transmitters installed after January 1, 1978, 18 ±2 dB
   below peak envelope power.

   (d) The authorized classes of emission are as follows:


------------------------------------------------------------------------
           Types of stations                   Classes of emission
------------------------------------------------------------------------
           Ship Stations \1\
Radiotelegraphy:
    100-160 kHz........................  A1A
    405-525 kHz........................  A1A, J2A
    1605-27500 kHz:....................
        Manual \15\ \16\ \17\..........  A1A, J2A, J2B, J2D
        DSC \6\........................  F1B, J2B
        NB-DP \14\ \16\................  F1B, J2B, J2D
        Facsimile......................  F1C, F3C, J2C, J3C
    156-162 MHz \2\....................  F1B, F2B, F2C, F3C, F1D, F2D
        DSC............................  G2B
    216-220 MHz \3\....................  F1B, F2B, F2C, F3C
    1626.5-1646.5 MHz..................  (\4\)
Radiotelephony:
    1605-27500 kHz \5\ \16\............  H3E, J2D, J3E, R3E
    27.5-470 MHz \6\...................  G3D, G3E
    162.5-1646.5 MHz...................  (\4\)
Radiodetermination:
    285-325 kHz \7\....................  A1A, A2A
    405-525 kHz (Direction Finding) \8\  A3N, H3N, J3N, NON
    154-459 MHz \12\...................  A1D, A2D, F1D, F2D, G1D, G2D
    2.4-9.5 GHz........................  PON
    14.00-14.05 GHz....................  F3N
           Land Stations \1\
Radiotelegraphy:
    100-160 kHz........................  A1A
    405-525 kHz........................  A1A, J2A
    1605-2850 kHz:
        Manual.........................  A1A, J2A
        Facsimile......................  F1C, F3C, J2C, J3C
        Alaska_Fixed...................  A1A, J2A
    4000-27500 kHz:
        Manual \16\....................  A1A, J2A, J2B, J2D
        DSC \18\.......................  F1B, J2B
        NB-DP \14\ \18\................  F1B, J2B, J2D
        Facsimile......................  F1C, F3C, J2C, J3C
        Alaska-Fixed\17\ \18\..........  A1A, A2A, F1B, F2B, J2B, J2D
    72-76 MHz \2\ \18\.................  A1A, A2A, F1B, F2B
    156-162 MHz \2\ \20\...............  F1B, F2B, F2C, F3C, F1D, F2D
        DSC............................  G2B
    216-220 MHz \3\....................  F1B, F2B, F2C, F3C
Radiotelephony:
    1605-27500 kHz \18\ \19\...........  H3E, J3E, R3E
    72-76 MHz..........................  A3E, F3E, G3E
    156-470 MHz........................  G3E
Radiodetermination:
    2.4-9.6 GHz........................  PON
Distress, Urgency and Safety \8\ \9\
    2182 kHz \10\ \11\.................  A2B, A3B, H2B, H3E, J2B, J3E
    121.500 MHz........................  A3E, A3X, N0N
    123.100 MHz........................  A3E
    156.750 and 156.800 MHz \13\.......  G3E, G3N
    243.000 MHz........................  A3E, A3X, N0N
    406.025 MHz........................  G1D
------------------------------------------------------------------------
\1\ Excludes distress, EPIRBs, survival craft, and automatic link
  establishment.
\2\ Frequencies used for public correspondence and in Alaska 156.425
  MHz. See  Sec.  Sec.  80.371(c), 80.373(f) and 80.385(b). Transmitters
  approved before January 1, 1994, for G3E emissions will be authorized
  indefinitely for F2C, F3C, F1D and F2D emissions. Transmitters
  approved on or after January 1, 1994, will be authorized for F2C, F3C,
  F1D or F2D emissions only if they are approved specifically for each
  emission designator.
\3\ Frequencies used in the Automated Maritime Telecommunications System
  (AMTS). See  Sec.  80.385(b).
\4\ Types of emission are determined by the INMARSAT Organization.
\5\ Transmitters approved prior to December 31, 1969, for emission H3E,
  J3E, and R3E and an authorized bandwidth of 3.5 kHz may continue to be
  operated. These transmitters will not be authorized in new
  installations.
\6\ G3D emission must be used only by one-board stations for maneuvering
  or navigation.
\7\ Frequencies used for cable repair operations. See  Sec.  80.375(b).
\8\ For direction finding requirements see  Sec.  80.375.
\9\ Includes distress emissions used by ship, coast, EPIRBs and survival
  craft stations.
\10\ On 2182 kHz A1B, A2B, H2B and J2B emissions indicate transmission
  of the auto alarm signals.
\11\ Ships on domestic voyages must use J3E emission only.
\12\ For frequencies 154.585 MHz, 159.480 MHz, 160.725 MHz, 160.785 MHz,
  454.000 MHz and 459.000 MHz, authorized for offshore radiolocation and
  related telecommand operations.
\13\ Class C EPIRB stations may not be used after February 1, 1999.
\14\ NB-DP operations which are not in accordance with CCIR
  Recommendation 625 or 476 are permitted to utilize any modulation, so
  long as emissions are within the limits set forth in  Sec.  80.211(f).
\15\ J2B is permitted only on 2000-27500 kHz.
\16\ J2D is permitted only on 2000-27500 kHz, and ship stations
  employing J2D emissions shall at no time use a peak envelope power in
  excess of 1.5 kW per channel.
\17\ J2B and J2D are permitted provided they do not cause harmful
  interference to A1A.
\18\ Coast stations employing J2D emissions shall at no time use a peak
  envelope power in excess of 10 kW per channel.
\19\ J2D is permitted only on 2000-27500 kHz.
\20\ If a station uses another type of digital emission, it must comply
  with the emission mask requirements of  Sec.  90.210 of this Chapter,
  except that Automatic Identification System (AIS) transmissions do not
  have to comply with the emission mask requirements of  Sec.  90.210 of
  this Chapter.

   [ 51 FR 31213 , Sept. 2, 1986;  51 FR 34984 , Oct. 1, 1986; as amended at  52 FR 7418 , Mar. 11, 1987;  52 FR 35244 , Sept. 18, 1987;  53 FR 8905 , Mar. 18, 1988;
    53 FR 37308 , Sept. 26, 1988;  54 FR 40058 , Sept. 29, 1989;  54 FR 49993 , Dec.
   4, 1989;  56 FR 11516 , Mar. 19, 1991;  57 FR 43407 , Sept. 21, 1992;  58 FR 33344 , June 17, 1993;  62 FR 40305 , July 28, 1997;  63 FR 36606 , July 7, 1998;
    67 FR 48564 , July 25, 2002;  68 FR 46963 , Aug. 7, 2003;  69 FR 64672 , Nov. 8,
   2004]