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Technical Specifications：
Frequency range：600MHz---800MHz
Modulation mode：FM
Oscillation mode：PLL
Deviation range:48KHz(with companding and auto volume control circuit)
Band width：250KHz
S/N：>105dB
Distortion：< 0.3% (1KHz )
Frequency response：40Hz~18KHz±3dB
US-131 receiver:
Receiving mode：auto signal-selecting receiving
Oscillation mode：PLL
Sensitivity：5dBuv
Harmonic interference rate ： >80dB
Image interference rate ： >70dB
US-131H handheld transmitter:
Transmitting power：30mW
Max input sound pressure：130dB
Microphone capsule ：Condenser, dynamic (selectable)
Battery：AA*2
US-131T Body-pack transmitter:
Transmitting power：30mW
Oscillation mode：PLL
Microphone capsule ：Condenser
Polar pattern ：Omni directional， cardioid， super-cardioid(selectable)
Microphone type：Clip type, headset type (selectable)
