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                                GENERAL  | 
                            
                             
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                               Part NO. : 13750 | 
                            
                             
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                              NSN NO. : 5965-99-911-8230 | 
                            
                             
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                               Transducer Type : TROPICALIZED 
                                NOISE CANCELLING MICROPHONE | 
                            
                             
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                                SPECIFICATION  | 
                            
                             
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                               Sensitivity | 
                            
                             
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                              : | 
                               -65dB re 1V/Pa at 1kHz 
                                with sound source 9.5mm distant from front of 
                                microphone.  
                                The peak output is approx. 
                                3mV for loud speech close to the microphone. | 
                            
                             
                                
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                               Impedance | 
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                              : | 
                              300ohm ¡¾ 20% at 1kHz. | 
                            
                             
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                               Noise cancellation | 
                            
                             
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                              : | 
                              Approx. 35dB at 100Hz gradually 
                                reducing to 0dB at 1.2kHZ. | 
                            
                             
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