cofdm transmitter wireless video modulator

COFDM wireless video audio transmission system advantages

1. Long-range transmission distance
2. Real-time transmission systems
3. Delay time very short less than 500ms
4. Perfect image quality, brighter colors, and image smoothness. (we will support a video to demonstrate it if you sent an inquiry)

Product Features:

1. Transmission power 1W
2. Extreme lightweight and rugged housing
3. Vibration and shock resistant
4. Applied COFDM modulation, MPEG-2 / H.264 compression
5. Small dimensions
6. Perfect for mobile applications
7. High quality of video transmission, no mosaic, no dragging phenomenon, stable power with adjustable dynamic power;
8. Support NLOS transmission, strong diffraction capability

cofdm transmitter wireless video modulator

cofdm transmitter wireless video modulator

cofdm transmitter wireless video modulator UAV micro HDMI NLOS module HD-SDI receiver

cofdm transmitter

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If you are interested in this mode, please contact us today.

Product Overview

The COFDM Transmitter Wireless Video Modulator is a professional-grade digital video and audio transmission solution designed to meet the demands of modern broadcasting, UAV reconnaissance, security monitoring, and mobile communications. By adopting advanced COFDM (Coded Orthogonal Frequency Division Multiplexing) modulation and MPEG-2/H.264 video compression, this system delivers stable, real-time, and high-quality video transmission over long distances — even in non-line-of-sight (NLOS) environments or under complex interference conditions.

Unlike conventional analog wireless systems or narrowband digital transmitters, this COFDM wireless solution maintains consistent performance in environments affected by multipath reflections, urban obstacles, or high-speed movement. It supports both HDMI and HD-SDI video inputs, making it versatile enough for professional cameras, UAV payloads, or mobile broadcast setups. On the receiving side, multiple output interfaces such as HDMI, USB, and Wi-Fi ensure compatibility with Android/iOS devices, recording equipment, or live monitoring stations.

The system is available in ultra-compact PCB module versions for OEM integration into UAVs, handheld devices, or embedded platforms. With transmitter modules weighing less than 20g and receiver modules under 25g, the COFDM transmitter is ideally suited for applications where weight and space are critical factors. Despite its size, it provides >2 km transmission distance (standard ISM 900 MHz band), latency as low as 30 ms, and outstanding resistance to interference.

This product line offers a full spectrum of deployment options — from lightweight UAV micro-modules to rugged housings for ground-based broadcasting. Whether for aerial video downlink, covert surveillance, mobile news gathering, or wireless event broadcasting, the COFDM Wireless Video Modulator provides the ideal balance of performance, reliability, and mobility.

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Advantages of the COFDM Wireless Video Modulator

1. Long-Range Transmission
   • Provides stable video links beyond 2 km in ISM 900 MHz band with low-power operation.
   • Optional extended-power models for even greater coverage.
2. Real-Time Transmission
   • End-to-end latency as low as 30 ms, ensuring smooth and timely video feeds.
   • Suitable for UAV piloting, live event broadcasting, and critical surveillance missions.
3. Low Delay Performance (<500 ms system)
   • Standard configurations provide latency under 500 ms, with optimized modules delivering ~30 ms.
   • This ensures real-time responsiveness in control and monitoring applications.
4. High-Quality Video Output
   • Supports 720p and 1080p at 30 fps, with sharp details, bright colors, and smooth playback.
   • No mosaic artifacts, no dragging effect, and consistent image clarity.
5. Compact & Lightweight Design
   • Ultra-small PCB modules as light as <20 g for transmitters and <13 g for receivers.
   • Rugged casings available for vibration, shock, and outdoor resistance.
6. Robust Against Multipath Interference
   • COFDM modulation ensures reliable video transmission in urban, maritime, and mountainous environments.
   • Strong NLOS performance with superior diffraction capability.
7. Flexible Integration
   • Available as standalone systems with housings, or as embedded modules for UAV/OEM integration.
   • Multiple input/output interface options: HDMI, HD-SDI, USB, Wi-Fi.
8. Scalable User Access
   • Supports multiple receivers simultaneously without user limitation.
   • Broadcast-style transmission for multiple operators monitoring the same feed.

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Product Features

• Transmission Power: 1W standard, configurable options available.
• Housing: Rugged, vibration- and shock-resistant casing; module-only versions for integration.
• Video Encoding: MPEG-2 / H.264 compression for efficient, high-quality streams.
• Video Formats: 720p @ 30fps, 1080p @ 30fps.
• Modulation: COFDM for stable NLOS performance.
• Lightweight PCB Modules:
  • Transmitter module: <20g
  • Receiver module: <25g
• Strong Anti-Interference: Resilient under multipath and diffraction conditions.
• Stable Power Control: Adjustable dynamic power to match environment and reduce noise.
• Low Latency: From 30 ms (optimized modules) up to <500 ms depending on configuration.
• RF Frequency: ISM 900 MHz band (902–928 MHz).
• Channel Options: 4 selectable channels.
• OS Compatibility: Android and iOS (receiver app versions).
• Working Temperature Range: -10°C ~ +50°C.

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Technical Parameters

Key Items	TX (Transmitter)	RX (Receiver)	Case1/Case2 Options
Video Interface	HDMI Input	USB Output / HDMI Output / Wi-Fi	HDMI or SDI selectable
PCB Size	50 × 40 × 14 mm	105 × 80 × 11 mm / 50 × 35 × 11 mm	Compact integration modules
Weight	<20 g	<10 g – 25 g	<13 g receiver module
Video Format	720p@30fps / 1080p@30fps	720p@30fps / 1080p@30fps	Smooth playback
Antenna Interface	Flexible SMA connector	Flexible SMA connector	Multiple antenna options
RF Frequency	902–928 MHz ISM band	902–928 MHz ISM band	Customizable upon request
RF Power	23 dBm (adjustable)	Input Sensitivity: -93 dBm to -5 dBm	High-gain supported
Bandwidth	6 MHz	6 MHz	Optimized channel spacing
Channels	4 selectable	4 selectable	Supports multiple receivers
Transmission Distance	>2 km (LOS)	>2 km (LOS)	Extended distance optional
Latency	~30 ms	~30 ms	System delay <500 ms
Operating System	—	Android / iOS supported	Receiver app control
Power Supply	5V <1.5A	5V @ <150mA – <600mA	Receiver supports 5–36V @ <5W
Working Temperature	-10°C ~ +50°C	-10°C ~ +50°C	Suitable for outdoor deployment

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Application Scenarios

The COFDM Transmitter Wireless Video Modulator is designed for professional-grade wireless video transmission across a wide range of fields:

1. UAVs / Drones
   • Real-time downlink of HD video for aerial reconnaissance, mapping, and inspection.
   • Lightweight modules minimize payload weight for drones.
   • Essential for disaster relief, border patrol, or environmental monitoring.
2. Broadcast & Media
   • Wireless camera systems for outdoor life events, concerts, and sports.
   • Mobile news gathering vehicles transmit video without cables.
   • On-site production crews needing quick, untethered camera feeds.
3. Public Safety & Security
   • Law enforcement uses UAVs or portable cameras for crowd monitoring.
   • Firefighters relay live video from inside hazardous areas.
   • Border control and maritime surveillance operations.
4. Military & Defense
   • Tactical reconnaissance systems for soldiers or vehicles.
   • Secure, encrypted video streams for command centers.
   • Long-range NLOS video for battlefield awareness.
5. Industrial Applications
   • Remote video feeds for oil & gas pipelines, mines, or offshore rigs.
   • Monitoring of large-scale construction or infrastructure projects.
   • Mobile inspection systems in logistics and transportation.

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Optional Configurations

• Module vs. Housed Versions
  • PCB module for UAV/OEM integration.
  • Rugged housed versions for handheld or outdoor applications.
• Interface Options
  • HDMI input standard; HD-SDI optional.
  • Receiver outputs: HDMI, AV, USB, Wi-Fi.
• Power & Range Extensions
  • Standard ISM 900 MHz operation.
  • Extended power amplifiers are available for longer distance transmission.
  • Custom frequency band versions available upon request.
• Multi-User Broadcast
  • One transmitter supports unlimited receivers.
  • Ideal for events and group monitoring.

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Conclusion

The COFDM Transmitter Wireless Video Modulator represents a new generation of compact, lightweight, and professional-grade wireless video transmission systems. Built on advanced COFDM modulation and H.264 compression, it ensures high-quality, real-time video over long distances with low latency, strong anti-interference capability, and excellent NLOS performance.

From UAV payloads and mobile broadcasting to security, defense, and industrial inspection, this system delivers the stability, reliability, and flexibility needed for mission-critical applications. With customizable frequency ranges, modular or rugged designs, and multiple input/output options, it can be tailored to meet the exact requirements of different industries and projects.

If you are looking for a compact, powerful, and versatile wireless video transmission solution, the COFDM Wireless Video Modulator is the ideal choice. Contact us today to learn more, request a demonstration, or discuss customization options.