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RF Parameters: Frequency range: 76~108MHZ(frequency band may customized when MOQ is over 100pcs) Frequency stepping: 100KHZ,0.1MHZ Frequency deviation: +-75KHZ RF Power: 0-1W ,11 levels adjustable. Harmonic and clatter: no more than 60dB SNO Rate:no less than 60dB RF output: TNC-K,50 Ohm Audio Parameters: Audio input: analog audio 3.5mm in ,RCA in Mic input:3.5mm in Audio Input Channel:Line in (3.5mm/RCA), TF Card MP3,Bluetooth Audio input level:15dBV Audio distortion: no more than 0.2% Audio frequency response: 50HZ~15000HZ Stereo seperation: >=40dB Pre-emphasis: 50US/ 75US switchable Audio control: electronic volume control,11 levels adjustable from 0~10, level 0 means no volume output. MIC control: electronic volume control,11 levels adjustable from 0~10, level 0 means no volume output. Other Parameters: Work voltage: 12V Work current: