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        F520B
        Feature:IP68 waterproofFlashing lightAlarmWireless replicationReduce noise Frequency decodingUHF 400–520MHZ TYPE-C chargingCTCSS, DCS standard mute soundComputer programming password reading and writing frequencyChinese/English language reporting number16 StorageTime limited launch Power saving fun…
        Introduction:
        Feature:
        IP68 waterproof
        Flashing light
        Alarm
        Wireless replication
        Reduce noise 
        Frequency decoding
        UHF 400–520MHZ 
        TYPE-C charging
        CTCSS, DCS standard mute sound
        Computer programming password reading and writing frequency
        Chinese/English language reporting number
        16 Storage
        Time limited launch 
        Power saving function
        Special mute sound
        VOX
        Non standard mute function
        scanning function
        Interference function
        High/Low voltage warning
        High/Low Power
        Wide/Narrow band
        Parameters:
        GENERAL:
        Frequency: UHF:400-520MHz
        Channel capacity:16
        Channel space:25/12.5KHZ
        Input voltage:7.4vdc
        Standby:≤ 20mA
        Receiver:≤ 450mA
        Transmitterter:≤ 1.5A @High power,650mA@Low power
        Frequency stability:±2.5ppm
        Work temperature:-20℃ to +60℃
        Antenna impedance:50Ω
        Size:112*54*30mm

        TRANSMITTER:
        Transmitter output power:≤5W
        Emission Current:≤1500 mA
        Spurious emission:≤7.5uW
        SNR:≥-45dB
        Radio distortion:≤5%
        subaudio frequency(wide band):0.7±0.1KHz
        Adjacent Channel Power:≤-65dB
        modulation sensitivity:8~12mV

        RECEIVER:
        Receiver sensitivity:-122dBm (12dB SINAD)
        Channel selectivity(wide band)      :≥55dB 
        Intermodulation(wide band):≥55dB
        conducted spurious emission:≤-57dB@25KHz,≤-57dB@12.5KHz
        SNR:≥45dB@25KHz,≥40dB@12.5KHz
        Radio power:≥350mW
        Radio distortion:<10%
        Receiving Current:≤450mA
        +86-595-82069888