HD Video Wireless Communication

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COFDM Wireless Downlink

COFDM Wireless Transmitter
COFDM Wireless Receiver

TDD Duplex Wireless Transceiver

  800M-1.4G IP Links 2W/5W
  800M-1.4G IP Links 10W
800M-1.4G-2.4G H265 Tx 300mW
  800M-1.4G-2.4G H265 Rx 300mW
5.8G H265 500mW


HDMI/AV Tx Module
SDI/AHD Tx Module
H265 Rx Module
H264 Rx Module
Relay Module
1W Power Amplifier

TDD OEM Modules

DLM Transceiver Module
DLB Transceiver Module
2W Power Amplifier(800M/1.4G)
5W Power Amplifier(800M/1.4G)
10W Power Amplifier(800M/1.4G)
H264/H265 Codec Modules
Video Encoder Enclosed
HDMI/AV Video Encoder
SDI/AHD Video Encoder
H.264 Video Decoder
H.265 Video Decoder


UART Config Panel

DLB full duplex wireless transceiver module for video and data Link

    -- TDD OFDM full duplex wireless transceiver module for video and data link
    -- Up to 30Mbps Iperf Throughput @20MHz channel
    -- Supports Point-to-Point and Point-to-Multipoint networks
    -- RF Tx Power: 25±2dBm
    -- Working Frequency: 806~826HMz, 1428~1448MHz, 2402~2482MHz
    -- Web UI or control uart for management
    -- 2 Ethernet and 3 TTL uart data link
    -- Audio input and output with codec

Sihid DLB module was designed for video and data wireless transmission with two way wireless data link. This OFDM radio module works at 800MHz, 1.4GHz and 2.4GHz bands, with frequency hopping technology (FHSS) to make sure better stability signal communication.


  • TDD OFDM modulation
  • Supports three bands (806~826HMz/1428~1448MHz/2402~2482MHz)
  • Supports FHSS inside each band
  • 1.4/3/5/10/20MHz band widths
  • Max 30Mbps@20MHz throughput
  • RF transmission power: 25±2 dBm
  • Constellation: QPSK, 16QAM, 64QAM, self-adaption
  • Sensitivity: -106dBm(2.4GHz 1Mbps), -108dBm(1.4GHz 1Mbps), -108dBm(800MHz 1Mbps)
  • Supports IP data transmission(2 Ethernet port)
  • Supports serial data transmission(3 channel, TTL)
  • Supports audio input and output with codec on board
  • Up to 17km LOS (UAV-to-ground) and 2km LOS(ground-to-ground)
  • Web UI or control uart for management
  • AES128 encryption
  • Uplink and downlink stream control
  • Networking mode: Point-to-Point, Point-to-Multipoint, Relay, mesh(specify)
  • Movement Speed: Supports no less than 120km/h
  • Power input: 7~30V
  • Power consumption<4.5W
  • Dimensions: 58*64*13mm
  • Weight: 32g

Power in XT30PW-M connector, DC in:7~30V
Ethernet 1 4PIN ZH1.5mm connector
Ethernet 2 RJ45 connector
Data uart1 3PIN ZH1.5mm connector, TTL 3.3V
Data uart2 and uart3 6PIN PH1.25mm connector, uart3 works as control uart and data uart, TTL 3.3V
Audio input and output 4PIN PH1.25mm connector
USB Micro USB connector, for software upgrading
Switch Tx/Rx control signal for outside power amplifier
Main antenna Tx/Rx Antenna port, IPEX
Second antenna Rx Antenna port, IPEX
12V out On-board 12V out(<150mA), for cool fan power supply

Wireless networking with DLB

DLB module supports two operating modes: Access Node or Central Node. It can be managed through Web UI or AT command via uart3. DLB module supports features of maximum 16 Access Nodes connected to a Central Node. All of the Nodes are in a same wireless LAN and share the whole transmission bandwidth (maximum 30Mbps@20MHz throughput). Data from Central Node to Access Node, we call downlink, and data from Access Node to Central Node, we call uplink. Uplink and downlink stream ratio can be controlled through web UI or AT command. When using DLB module for Point-to-Point transmitting, uplink and downlink share the whole transmission bandwidth (maximum 30Mbps@20MHz throughput) too. DLB module supports networking mode: Point -to-Point, Point-to-Multipoint, Relay, and Mesh (specify mesh version when order).

Add Tx Power Amplifier

The maximum RF transmission power of DLB module is 25±2 dBm, Sihid also provides power amplifier to increase the RF Power to 2W/5W/10W. Below diagram shows how to add power amplifier outside of the DLB module.

Point-to-Point transmitting

Point-to-Multipoint transmitting

Relay transmitting

Mesh transmitting (Specify)


DLB overview.pdf

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Email: or, Phone:+86-755-23765232, Skype ID:embestzgr
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