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BK-320??????黰? 
???????/The power supply??.......................Transmitter DC9V receiver AC220V 50Hz 
????????/Microphone power??..............................................25mA
??????/Carrier Frequency??.........................................VHF200~270MHz
????????/Frequency Stability??........................................+0.002%
?????/Slgnll noise Ratio??...........................................>98dB
????????/Resembles Inferference??...................................>80dB
?????Χ/Dynamic Range??............................................>90dB
г?????/Harmonic distortion??..................................<0.5%
????/Type: ...................................................?????/Condenser
??????/Polar Pattern: ...................................????????/Unidrectional
??????/Frequency Response??...............................60Hz~16000Hz
?????????/Microphone Sensitivity??......................-47??3dB@1KHz
??????????/Receiver Sensitivity??................................50uS(SINAD=20dB)
??????/audio frequency output??.........Independence is 0-??400mv Mix 0-??300mv
????Χ/Temperature Range:......................-10??~55??

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