Sec. 80.267  Requirements for survival craft nonportable radio 
          equipment.

    (a)(1) The radio transmitter must meet the following requirements:

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                                      Frequency                               Modulation        
                                                        
                                      tolerance                               percentages       
                                                        
                                 -------------------                          (average of       
                     Average power                      
    Operating frequency (kHz)                          Type of emission       modulation        
  Modulation          output into     Artificial antenna
                                  Parts \1\                                  percentage of      
   frequency           specified                        
                                  in 10 \6\  HZ \2\                          positive and       
                  artificial antenna                    
                                                                            negative peaks)     
                                                        
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500.............................    5,000        20  A2A and A2B or H2A   Not less than 70..  No
t less than 450   Not less than 30    10 ohms resistance
                                                      and H2B.                                 n
or greater than    watts.              and 100          
                                                                                               1
350 Hertz.                             picofarads       
                                                                                                
                                       capacitance.     
8364............................      200        50  A2A or H2A ldes....  ......do..........  ..
....do..........  Not less than 40    40 ohms           
                                                                                                
                   watts.              resistance.      
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\1\ For equipment type accepted or type approved before November 30, 1977.                      
                                                        
\2\ For equipment type accepted or type approved after November 29, 1977.                       
                                                        

    (2) The transmitter must have an antenna current meter.
    (b) Survival craft non-portable receivers must meet the following 
requirements:
    (1) The audio output must be one milliwatt at a signal to noise 
power ratio of at least 10 to 1, when the receiver is supplied through 
the following artificial antennas with the respective radio frequency 
signals:

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----------------
                                    Signal strength                                             
                
    Operating frequency, (kHz)        (microvolts)    Modulation factor   Modulation (Hz)    Art
ificial antenna 
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----------------
500..............................                200                0.3                400  15 o
hms resistance  
                                                                                             and
 100 picofarads 
                                                                                             cap
acitance.       
8364.............................              1,000                0.3                400  40 o
hms resistance. 
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----------------

    (2) When the receiver is adjusted for A2A or H2A emission on 500 kHz 
and 8364 kHz the noise power present in the output of the receiver must 
be determined with an unmodulated input signal of the indicated 
strength;

[[Page 67]]

    (3) The audio output of the receiver must be capable of at least 8 
dB above one milliwatt at the rated loan impedance.