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

SDL550 full duplex wireless transceiver for video and data Link

    -- TDD OFDM full duplex wireless transceiver for video and data Link
    -- Up to 30Mbps Iperf Throughput @20MHz channel
    -- Supports Point-to-Point and Point-to-Multipoint Networks
    -- Interface through web browser or control uart
    -- 2 Ethernet and 3 channel RS232 data link
    -- Audio in/out supported by inside Audio codec
    -- Long distance wireless transceiver with 10W RF power

Sihid SDL550 was designed for video and data wireless transmission with two way wireless data link. This OFDM radio device works at 800MHz or 1.4GHz bands, with frequency hopping technology (FHSS) to make sure better stability signal communication.


  • TDD OFDM modulation
  • Supports 806~826HMz band or 1428~1448MHz band
  • Supports FHSS inside each band
  • 1.4/3/5/10/20MHz band widths
  • Max 30Mbps@20MHz throughput
  • RF transmission power: 10W
  • Constellation: QPSK, 16QAM, 64QAM, self-adaption
  • Sensitivity: -108dBm(1Mbps)
  • Supports IP data transmission(2 Ethernet port)
  • Supports serial data transmission(3 channel, RS232)
  • 1~15km(ground-to-ground), 30~150km(UAV-to-ground, optional distance grade)
  • Web UI or control uart for management
  • AES128 encryption
  • Uplink and downlink stream control
  • Networking mode: Point-to-Point, Point-to-Multipoint, Relay, and Mesh(specify)
  • Movement Speed: Supports no less than 120km/h
  • Compact size and light weight
  • Rugged aluminum alloy housing
  • Power input: 24~30V
  • Power consumption<40W(RF Power 10W)
  • Dimensions: 124*67.8*28.5mm
  • Weight: 252g

I/O Description
Ethernet1 4PIN ZH1.5mm connector, bridged with Ethernet2
Ethernet2 RJ45 connector, bridged with Ethernet1
RS232*3 9PIN ZH1.5mm connector, 3 channel RS232 uart
Audio in/out 4PIN ZH1.5mm connector, audio in and audio out port
Power-in XT30PW-M connector
ANT1 Tx/Rx Antenna port, SMA female
ANT2 Rx Antenna port, SMA female

Wireless networking with SDL550

SDL550 supports two operating modes: Access Node or Central Node. It can be managed through web UI or Control uart. SDL550 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 Control uart. When using SDL550 for Point-to-Point transmitting, uplink and downlink share the whole transmission bandwidth (maximum 30Mbps@20MHz throughput) too. SDL550 supports networking mode: Point -to-Point, Point-to-Multipoint, Relay, and Mesh (specify mesh version when order).

Point-to-Point transmitting

Point-to-Multipoint transmitting

Relay transmitting

Mesh transmitting (Specify)


SDL550 overview.pdf

Room 608, Dongbian Commerce Building, #222 Minzhi Road, Longhua District, Shenzhen, China 518131
Email: or, Phone:+86-755-23765232, Skype ID:embestzgr
Copyright©Sihid Technology Limited 2015-2021 all rights reserved.

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