HDMI and IP camera COFDM wireless video transmitter and receiver 5-watt power amplifier

HDMI and IP camera COFDM wireless video transmitter and receiver 5-watt power amplifier

4K UHD • or IP Ethernet Camera • H.265/H.264 • 5W RF Power • Long-Range • NLOS • AES256 Encryption

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Overview

This is a professional-grade HDMI and IP camera COFDM wireless video transmitter, designed for long-range, non-line-of-sight (NLOS) digital video transmission in complex and mobile environments. Built with our high-performance 4K HDMI video encoder board and COFDM transmission module and a compact 5W RF power amplifier, it delivers exceptional reliability, strong penetration, and low-latency HD/4K video transmission for UAVs, robotics, security forces, broadcasting, and industrial applications.

Featuring 4K HDMI input, IP camera RTSP video input, H.265/H.264 encoding, AES256 encryption, and configurable bandwidth from 1–8 MHz, the transmitter is engineered for demanding real-time video applications. The rugged CNC-machined aluminum alloy housing ensures durability while keeping the overall size and weight low—only 313g.

It supports dual-video input (optional firmware), single-direction transparent data UART, analog/HDMI audio, and offers flexible configuration through both Web UI and serial command interfaces. With a working frequency range of 200–860 MHz, output power up to 5W, and compatibility with our COFDM wirelress video receivers, it provides a highly customizable wireless video link with industry-leading stability and transmission distance.

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Features

1. Dual-Mode Video Input (HDMI + IP Camera)

• HDMI input supports up to 4K (3840×2160@30fps).

• Network port supports IP camera RTSP video streams (e.g., rtsp://username:password@IP:554/…).

• Optional firmware enables simultaneous dual-video encoding and transmission.

2. Advanced Video Encoding

• H.265 / H.264 encoding with multiple selectable profiles:

  • H.264 Low-Latency Mode — ~130 ms when paired with Vcan2095 receivers.

  • H.264 Normal Mode.

  • H.265 4K Mode — ~350 ms (depending on receiver).

• Bitrate auto-adaptation or manual configuration through Web UI/serial port.

3. Professional COFDM Wireless Transmission

• COFDM modulation ensures superb anti-interference and NLOS performance.

• Supported parameters:

  • IFFT: 2K

  • Bandwidth: 1–8 MHz adjustable, 1 kHz stepping

  • Constellation: QPSK / 16QAM / 64QAM

  • FEC: 1/2, 2/3, 3/4, 5/6, 7/8

  • Guard interval: 1/32, 1/16, 1/8, 1/4

  • Wireless bitrate: 0.5–31.67 Mbps

4. Long-Range 5W RF Power Amplifier

• Output power: 5W (37 dBm)

• Stable high-power performance suitable for UAV long-range imaging, emergency response, and military/security operations.

5. Rich I/O Interfaces

• HDMI video input

• IP camera input via 4-Pin GH (1.25mm) Ethernet connector

• Analog audio input (Line in / Mic in selectable)

• Transparent data UART (TTL 3.3V)

• Configuration UART

• SMA antenna port

• XT30PW-M power input

• Micro-USB host port for firmware upgrade

6. Secure AES256 Encryption

Ensures confidentiality for military, law enforcement, and industrial operations.

7. Mobile & NLOS Transmission Support

Optimized COFDM algorithm guarantees stable video even under:

• Building obstacles

• Moving vehicles

• UAV high-speed flight

• Urban RF-dense environments

8. Web UI + Serial Configuration

• Access via 192.168.0.215 (fixed IP)

• Supports RTSP configuration, video encoding parameters, audio settings, bandwidth, power, and frequency adjustments.

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Specifications

Interfaces

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Wireless Transmission

• Modulation: COFDM

• IFFT: 2K

• Bandwidth: 1–8 MHz adjustable

• Frequency range

  • Default:
    200–860 MHz, 40 MHz bandwidth (customizable)

  • Operation Above 860 MHz:
    Frequencies above 860 MHz (e.g., 915 MHz or 902–928 MHz) are supported via an external block down converter (BDC) installed on the receiver side.

• Frequency step: 1 kHz

• Output power: 5W (37 dBm)

• Supported constellations: QPSK / 16QAM / 64QAM

• FEC: 1/2, 2/3, 3/4, 5/6, 7/8

• Guard interval: 1/32, 1/16, 1/8, 1/4

• Wireless bitrate: 0.5–31.67 Mbps

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Video & Audio

• Video Input: HDMI input video or Ethernet port for IP camera input video. Optional dual video inputs for simultaneous encoding and transmission (dedicated firmware will be flashed at the time of shipment).

• Max HDMI Input Resolution: 4K@30

• Supported formats: 1080p60/50/30/25/24, 1080i60/50, 720p60/50

• Encoding: H.265 or H.264

• Latency:

  • H.264 low-latency: 90–130 ms (with Vcan1726-RX / Vcan2131)

  • H.265 4K: 200–350 ms

• Audio:

  • HDMI embedded audio

  • Analog audio (AAC 16-bit mono 48 kbps)

  • Line-in or Mic-in mode can be selected via software configuration.

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Physical & Power

• Dimensions: 110 × 90.5 × 30.5 mm

• Weight: 313 g

• Power supply: DC 12–18V

• Power consumption: 2.7 A @ 12.2 V (5W RF output)

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Interface Description

1. HDMI Video Input

• Standard HDMI connector

• Supports up to 4K 30fps video input

• Video encoding formats: H.265 / H.264

• Multiple latency modes available:

  • H.264 Low-Latency Mode

  • H.264 Standard Mode

  • H.265 Standard Mode

2. Ethernet Port (IP Camera Input)

The device is equipped with a 4-pin 1.25 mm pitch locking connector.

The default IP address of the device is 192.168.0.215, and this IP address cannot be modified.

To access the Web User Interface (Web UI), please open the following address in your web browser:

http://192.168.0.215/

The device supports connection to an IP camera via Ethernet and is compatible with the RTSP protocol. It can obtain the video stream from the IP camera and transmit it via COFDM.

When connecting an IP camera, you must enter the video stream URL of the IP camera in the Web UI, as shown in the figure below.

• GH 4-PIN 1.25 mm locking connector

• Default transmitter IP: 192.168.0.215 (fixed)

• Web UI access: http://192.168.0.215/

• Supports RTSP IP cameras; input the stream URL in Web UI.

RTSP Stream URL Example

For example, the RTSP video stream URL of a certain IP camera may be:

In this URL:

• “admin” is the RTSP username of the IP camera.

• “abcd1234” is the access password.

• “192.168.0.64” is the IP address of the IP camera
  (Note: The IP address of the IP camera must be set to the same subnet as the transmitter IP address 192.168.0.215.)

• “554” is the RTSP port number.

• “/Streaming/Channels/101” is the video stream path of the IP camera.

Users should modify the above parameters according to their own IP camera configuration.

3. Analog Audio Input

• GH 2-PIN 1.25 mm locking connector

• Supports Line-in or Mic-in (selectable via Web UI)

• Audio format: AAC, 16-bit, mono, 48 Kbps

Pin Definition:

4. Data UART – One-Way Transparent Serial Transmission

• 3-PIN PH 1.25 mm connector

• TTL 3.3V level

• Baud rate and parameters configurable

• Transmits data one-way through the COFDM link to the receiver’s data UART.

5. Control UART – Configuration Interface

• 4-PIN 1.25 mm connector, TTL 3.3V

• Supports:

  • SilHayda SconA / SconB / SconC configuration panels

  • PC or host controller configuration

• Includes a 5V pin for powering config panels.

6. Power Input

• XT30PW-M connector

• Input voltage: DC 12–18V

• Power consumption: 2.7A @ 12.2V (5W RF output)

7. USB Host Port

• Micro USB connector

• Used for firmware upgrade and maintenance.

8. Antenna Interface

• SMA female (outer thread, inner hole)

• Compatible with standard COFDM and NLOS whip antennas.

9. LED Status Indicators

Dimension

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Receiver Options

The transmitter (TX) supports 4K video input and transmission.

Two receiver (RX) versions are available to meet different output requirements:

4K Receiver Version

• HDMI output up to 4K

• Designed for full 4K video display applications

• IP RTSP streaming is not supported in this version

1080p Receiver Version

• HDMI output up to 1080p

• IP RTSP streaming supported

• CVBS video output supported

Please note that 4K output and IP RTSP streaming cannot be supported simultaneously. If IP streaming functionality is required, please select the 1080p receiver version.

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Applications

1. UAV / Drone Video Transmission

• Long-range flight video downlink

• Stable NLOS performance during high-speed movement

• Supports IP camera or lightweight HDMI flight cameras

2. Law Enforcement & Public Security

• Mobile surveillance

• Emergency response video

• Tactical command real-time streaming

3. Broadcast & Live Production

• Wireless camera systems

• Outdoor event coverage

• Multi-camera low-latency setups

4. Industrial Inspection

• Pipeline robots

• Remote monitoring vehicles

• Tunnel or underground inspection

5. Military & Defense

• Reconnaissance robots

• Border surveillance systems

• Secure encrypted field video links

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Customization Options

• Custom frequency bands (200–860 MHz)

• Custom firmware for dual-video encoding

• Custom RF output power levels （10 watts 20 watts 50 watts）

• Integrated drone-friendly lightweight variant

• OEM/ODM hardware enclosure

• Custom HDMI/IP auto-switching logic

• NRE support for special project requirements

• Custom cable harness / connector layout

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Frequently Asked Questions (FAQ)

1. Does this COFDM video transmitter support both HDMI and IP camera input?

Yes. It supports 4K HDMI input and IP camera RTSP video streams via Ethernet.

2. Can I use an IP camera with any IP address?

The transmitter has a fixed IP (192.168.0.215).
Your IP camera must be set to the same network segment (e.g., 192.168.0.xxx).

3. What IP camera protocols are supported?

This model supports RTSP.
Example input format:
rtsp://username:password@IP:554/Streaming/Channels/101

4. How far is the wireless transmission range?

Range depends on environment, antenna, and receiver.
With 5W output, typical performance:

• Vcan2131 receiver: 200–300 ms latency

• Vcan2095 receiver (low latency): 90–130 ms

Long-range transmission is supported even under NLOS conditions.

5. Does the cofdm wireless video transmitter support encryption?

Yes, full AES256 end-to-end encryption.

6. Can I transmit data together with the video?

Yes. A one-way transparent UART channel allows telemetry or control data to pass through the COFDM link.

7. How do I configure the transmitter?

Two methods:

• Web UI at http://192.168.0.215/

• Control UART using SconA/B/C configuration panels or PC tools

8. What video latency can I expect?

• H.264 low-latency mode: ~90–130 ms

• H.265 4K mode: ~200–350 ms
  (Camera self-latency not included)

9. Can the transmitter work on a drone?

Yes.
Its light weight (313g), compact size, and strong anti-interference performance make it ideal for UAV/robotic applications.

10. Which receivers are compatible?

• Vcan1726-RX COFDM receiver

• Vcan2070-RX low-latency receiver

Both support H.264/H.265 decoding depending on firmware configuration.

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