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;

[[Page 50]]

    (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&177;2 dB below peak 
envelope power;
    (B) For ship station transmitters installed before January 2, 1982, 
16&177;2 dB below peak envelope power; and
    (C) For ship station transmitters installed after January 1, 1982, 
18&177;2 dB below peak envelope power.
    (ii) In the 4000-27500 kHz band:
    (A) For coast station transmitters 18&177;2 dB below peak 
envelope power;
    (B) For ship station transmitters installed before January 2, 1978, 
16&177;2 dB below peak envelope power; and
    (C) For ship station transmitters installed after January 1, 1978, 
18&177;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.....................  A1A, J2A                           
        DSC........................  F1B, J2B                           
        NB-DP \14\.................  F1B, J2B                           
        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\.............  H3E, 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)  A3N, H3N, J3N, NON                 
     \8\.                                                               
  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.....................  A1A, J2A                           
        DSC........................  F1B, J2B                           
        NB-DP \14\.................  F1B, J2B                           
        Facsimile..................  F1C, F3C, J2C, J3C                 
        Alaska--Fixed..............  A1A, A2A, F1B, F2B                 
    72-76 MHz......................  A1A, A2A, F1B, F2B                 
    156-162 MHz\2\.................  F1B,F2B,F2C,F3C,F1D,F2D            
      DSC..........................  G2B                                
    216-220 MHz \3\................  F1B, F2B, F2C, F3C                 
Radiotelephony:                                                         
    1605-27500 kHz.................  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\                                                                    
    500 kHz \10\...................  A2A and A2B or H2A and H2B         
    2182 kHz \10\ \11\.............  A2B, A3B, H2B, H3E, J2B, and J3E   
    8364 kHz.......................  A2A, H2A                           
    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 Secs.  80.371(c), 80.373(f) and 80.385(b). Transmitters type 
  accepted before January 1, 1994, for G3E emissions will be authorized 
  indefinitely for F2C, F3C, F1D and F2D emissions. Transmitters type   
  accepted on or after January 1, 1994, will be authorized for F2C, F3C,
  F1D or F2D emissions only if they are type accepted 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 type accepted 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, EPIRB's and        
  survival craft stations.                                              
\10\ On 500 kHz and 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). 

[ 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]