Sec. 80.1077  Frequencies.

    The following table describes the frequencies used in the Global 
Maritime Distress and Safety System:

                                                                        
                                                                        
                                                                        
Alerting:                                                               
  406 EPIRBs..............................  406-406.1 MHz (Earth-       
                                             tospace).                  
                                            1544-1545 MHz (space-to-    
                                             Earth).                    
  INMARSAT A or C SES.....................  1626.5-1645.5 MHz (Earth-to-
                                             space).                    
  VHF DSC Ch. 70..........................  156.525 MHz 1.              
  MF/HF DSC 2.............................  2187.5 kHz 3, 4207.5 kHz,   
                                             6312 kHz, 8414.5 kHz, 12577
                                             kHz, and 16804.5 kHz.      
On-scene communications:                                                
  VHF Ch. 16..............................  156.8 MHz.                  
  MF radiotelephony.......................  2182 kHz.                   
  NBDP....................................  2174.5 kHz.                 
Communications involving aircraft:                                      
  On-scene, including search and rescue...  156.8 MHz 4, 121.5 MHz 5,   
                                             123.1 MHz, 156.3 MHz, 2182 
                                             kHz, 3023 kHz, 4125 kHz,   
                                             and 5680 kHz 6.            
Locating signals:                                                       
  406 MHz EPIRB beacons...................  121.5 MHz.                  
  9 GHz radar transponders................  9200-9500 MHz.              
Maritime safety information (MSI):                                      
  International NAVTEX....................  518 kHz 7.                  
  Warnings................................  490 kHz 8, 4209.5 kHz 9.    
  NBDP....................................  4210 kHz, 6314 kHz, 8416.5  
                                             kHz, 12579 kHz, 16806.5    
                                             kHz, 19680.5 kHz, 22376    
                                             kHz, 26100.5 kHz.          
  Satellite...............................  1530-1545 MHz (space-to-    
                                             Earth) 10.                 
General distress and safety communications                              
 and calling:                                                           
  Satellite...............................  1530-1544 MHz (space-to-    
                                             Earth) and 1626.5-1645.5   
                                             (Earth-to-space) 10.       
  Radiotelephony..........................  2182 kHz, 4125 kHz, 6215    
                                             kHz, 8291 kHz, 12290 kHz,  
                                             16420 kHz, and 156.8 MHz.  
  NBDP....................................  2174.5 kHz, 4177.5 kHz, 6268
                                             kHz, 8376.5 kHz, 12520 kHz,
                                             and 16695 kHz.             
  DSC.....................................  2187.5 kHz, 4207.5 kHz, 6312
                                             kHz, 8414.5 kHz, 12577 kHz,
                                             16804.5 kHz, and 156.525   
                                             MHz.                       
Survival craft:                                                         
  VHF radiotelephony......................  156.8 MHz and one other 156-
                                             174 MHz frequency.         
  9 GHz radar transponders................  9200-9500 MHz.              
                                                                        
1 Frequency 156.525 MHz can be used for ship-to-ship alerting and, if   
  within sea area A1, for ship-to-shore alerting.                       
2 For ships equipped with MF/HF equipment, there is a watch requirement 
  on 2187.5 kHz, 8414.5 kHz, and one other frequency.                   
3 Frequency 2187.5 kHz can be used for ship-to-ship alerting and, if    
  within sea areas A2, for ship-to-shore alerting.                      
4 Frequency 156.8 MHz may also be used by aircraft for safety purposes  
  only.                                                                 
5 Frequency 121.5 MHz may be used by ships for aeronautical distress and
  urgency purposes.                                                     
6 The priority of use for ship-aircraft communications in 4125 kHz, then
  3023 kHz. Additionally, frequencies 123.1 MHz, 3023 kHz, and 5680 kHz 
  can be used by land stations engaged in coordinated search and rescue 
  operations.                                                           
7 The international NAVTEX frequency 518 kHz is the primary frequency   
  for receiving maritime safety information. The other frequencies are  
  used only to augment the coverage or information provided on 518 kHz. 
8 Frequency 490 kHz cannot be used for MSI employing NBDP transmissions 
  until February 2, 1999.                                               
9 Frequency 4209.5 kHz is not used in the United States (see 47 CFR     
  2.106 footnote 520A).                                                 
10 In addition to EPIRBs, 1544-1545 MHz can be used for narrowband      
  distress and safety operations and 1645.5-1646.5 MHz can be used for  
  relay of distress alerts between satellites. Feeder links for         
  satellite communications are assigned from the fixed satellite        
  service, see 47 CFR 2.106.                                            

                Equipment Requirements for Ship Stations