K820 UHF wireless conference

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    Using  UHF , VHF band interference than conventional fewer transmission more reliable ; 

    DPLL multichannel digital phase-locked loop frequency synthesizer technology , in the frequency range 50MHZ to 250KHZ channel spacing, 

    providing up to 200 channels to choose, easy multiple sets of machines simultaneously, easily avoiding all kinds of interference ; 

    advanced automatic frequency technology , even if the frequency of the transmitter and receiver adjustment disorder , just push the button , 

    the transmitter will automatically lock the frequency and adjust consistent , easy to use ; 

    upscale LCD screen, so that the receiver and transmitter operating status at a glance ; 

    wireless conference launch system that uses two AA batteries, alkaline batteries can be used with high long time ( eight hours of high -power , low- power 12 hours ) . 

    5 intussusception can use the same machine .


    / Practical features , simple operation , beautiful, rugged design

    / High sound reproduction , full penetration, so that all participants can hear a clear statement

    / Channel number of groups : A, B, C, D four zones , each zone is 50 frequency 720.00-790.00MHZ

    / Panel Display : LCD display , which can display the RF / AF signal and frequency

    / Each channel has independent volume adjustment External antenna can be extended

    / Has a separate output for each channel

    / Oscillation Mode : PLL frequency synthesizer phase-locked

    / Carrier frequency : UHF 640 ~ 860 ( optional ) MHz

    / Band Width : 25MHz

    / Frequency adjustment: Infrared automatic

    / Output Power :10-30mW adjustable two tranches

    / Harmonic radiation : <-58dbc< span="">

    / Maximum deviation : ± 66KHz

    / Maximum input : 138dB SPL sound pressure

    / Ondo : Senior capacitor microphone core

    / Battery: 2 AA batteries

    / Chassis Specifications : EIA standard 1U models


    Conference desktop, hand-held, lavalier, and head-mounted models can be arbitrarily selected.

    K820 UHF wireless conference


    K820 UHF wireless conference


    Technical parameters


    Frequency range:740-790MHz

    Modulation mode:FM

    Frequency interval:50MHz

    Channels:200

    Channel interval:250KHz

    Frequency stability:±0.005%

    Dynamic range:100dB

    Frequency response:80Hz-18KHz(±3dB)

    SNR:>105 dB

    Distortion:≤0.5%

    Working temperature:-10℃ -+40 ℃

    Output power:30mW~ 3mW

    Inhibition:-60dB

    Power supply:2 AA batteries

    Use of time:>8 hours(30mW),>12hours(3mW)

    K820 UHF wireless conference



    Channel and each channel Frequency range:

    CHANNAL A

    CHANNAL: 0-49 FREQUENCY: 740.000MHZ-752.250MHZ

    CHANNAL B

    CHANNAL: 50-99 FREQUENCY: 752.500MHZ-764.750MHZ

    CHANNAL C

    CHANNAL: 100-149 FREQUENCY: 765.000MHZ-777.250MHZ

    CHANNAL D

    CHANNAL: 150-199 FREQUENCY: 777.500MHZ-789.750MHZ


    K820 receiver size chart

    K820 UHF wireless conference


    K820 receiver panel function display

    K820 UHF wireless conference