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Lenkeng HDMI Extender over Coaxial Cable


Lenkeng HDMI Extender over Coaxial Cable

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  • HDMI extender over coaxial cable technology

This LKV379 HDMI extender is designed to convert HDMI signal to HD digital TV signal based on DVB-T CATV transmission mode. Being different from traditional analog CATV signal, it uses 64QAM mode to realize the HD signal to HD digital TV signal conversion and transmit via coaxial cables for long distance;It is easy to built one to multiple and multiple to multiple video matrix through CATV splitter.

With the advantages of good image quality, strong resistance to interference and hundreds channels available, it can be widely applied in CCTV, outer large screen, shopping mall advertisement, media education and digital KVM fields etc.



  • TX rear panel

  1. RF TX: RF signal send
  2. RESET: Press to reset
  3. HDMI INPUT: HDMI signal input
  4. DC5V: DC 5V power input
  • RX real panel

  1. RF TX: RF signal send
  2. LINK: Connection le indicator
  3. RESET: Press to reset
  4. HDMI OUTPUT: HDMI l output
  5. DC5V: DC 5V power input


  • HDMI compliance: HDMI1.3
  • HDCP compliance: HDCP1.2
  • Transmission meduim: Coaxial cable
  • Transmission distance: 700m
  • HDMI graphics resolution: 1280x720@60Hz,1920x1080@60Hz
  • Input HDMI Resolution Supported:
    • 480i@60Hz?480p@60Hz?576i@50Hz?576p@50Hz,720p@50/60Hz?1080i@50/60Hz?1080p@50/60Hz Audio FormatStereo PMC
  • Video Encoding: H.264
  • Audio Encoding: MPEG2
  • TMDS Signal: 0.5~1.5Vp-p(TMDS)
  • DDC Signal: 5Vp-p(TTL)
  • ESD protection: IEC61000-4-2
  • Frequency: 100 to 1000MHz
  • Effective Bit Ratio: Max:31.6M bits
  • Insert Loss: <2dBm
  • RF output Wattage(TX): 0Bm
  • RF Interface: British system(75O type F)
  • Coaxial Cable reqired: RG6?RG7?RG11
  • MODE control: Button control
  • Input
    • Transmitter-TX: 1×HDMI; DC2.1
    • Receiver-RX: British system(75O type F)×1; DC2.1
  • Output
    • Transmitter-TX: British system(75O type F)×1
    • Receiver-RX: 1×HDMI


  • Housing: Metal Case
  • Product Dimension(L×W×H mm): 130x68x24mm
  • Net weight:
    • Transmitter-TX: 300g
    • Receiver-RX: 300g
  • Power supply: 5V/1A
  • Power consumption
    • Transmitter-TX: 3.5W
    • Receiver-RX: 3W
  • Operation temperaure: 0~60°
  • Storage temperature: —20~70°
  • Relative humidity: 0~95%(no condensation)