§  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 §  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.
   1615-27500 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:
   1615-27500 kHz ^16                  H3E, J2D, J3E, R3E.
   27.5-470 MHz ^6                     G3D, G3E.
   1626.5-1646.5 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.
            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                      F1,B J2B, J2D.
   Facsimile                           F1C, F3C, J2C, J3C.
   Alaska-Fixed ^17, ^18               A1A, A2A, F1B, F2B, J2B, J2D.
   72-76 MHz                           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:
   1615-27500 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, AEX, N0N.
   123.100 MHz                         A3E.
   156.750 and 156.800 MHz ^13         G3E, G3N.
   243.000 MHz                         A3E, A3X, N0N.
   406.0-406.1 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§ §  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§  80.385(b).

   ^4 Types of emission are determined by the INMARSAT Organization.

   ^5 [Reserved]

   ^6 G3D emission must be used only by one-board stations for maneuvering
   or navigation.

   ^7 Frequencies used for cable repair operations.See§  80.375(b).

   ^8 For direction finding requirements see §  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 [Reserved]

   ^14 NB-DP operations which are not in accordance with ITU-R
   Recommendations M.625 or M.476 are permitted to utilize any modulation,
   so long as emissions are within the limits set forth in §  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 §  90.210 of this chapter, except
   that Automatic Identification System (AIS) transmissions do not have to
   comply with the emission mask requirements of §  90.210 of this chapter.

   [ 51 FR 31213 , Sept. 2, 1986]

   Editorial Note: For   Federal Register   citations affecting §  80.207,
   see the List of CFR Sections Affected, which appears in the Finding
   Aids section of the printed volume and at www.fdsys.gov .

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