COFDM-T902T COFDM HD Wireless Transmitter with composite Video CVBS 720P HDMI 1080 P input

COFDM HD Wireless Transmitter

COFDM-T902T COFDM HD Wireless Composite Video Transmitter 1080P CVBS SD 720P

Selling Points

• 1～2W RF output;
• HD 1080P, SD720P composite CVBS in
• H.264/MPEG-2;
• Delay <500ms;
• 100mm×43mm×10mm, 0.2kg

Product Features

1. Working frequency can be adjusted from 170MHz ~ 930MHz
2. Video, audio interface: HDMI digital interface and analog CVBS composite inputs (_SDI input is coming soon)
3. High-quality digital video processing and H.264 / MPEG-2 video codec, HD quality
4. The COFDM HD wireless transmitter has a very short coding delay of 500 milliseconds
5. High-speed mobile and multi-path interference stable transmission of images, video
6. Powerful NLOS capability, COFDM HD Wireless Transmitter
7. Having space, diverse reception
8. With encryption, COFDM HD Wireless Transmitter
9. Default 1W transmit RF power, develop different 1~2W
10. According to customer requirements, OEM or ODMs are customized

Specification

Working frequency	170MHz ~ 900MHz, be customized
Modulation method	COFDM
RF Output power	1~2W can develop more power
Bandwidth	6/7/8MHz
Encryption	AES / AES2 / DES / DES2
guard interval	1 / 32,1 / 16,1 / 8,1 / 4
Technical standards	H.264 / MPEG-2
Video stream	2Mbps ~ 25Mbps
System delays	<500ms
BER	≤10-6
Transmission distance	1 ~ 10km
Compression format	H.264 / MPEG-2
Video input	HDMI, Analog CVBS video, and audio
Audio input	Stereo, Right + Left
Image definition	1080P/I (1920×1080) is compatible with 720P, 480P and SD @ frame rate of 25 frames / sec.
Video input interface	3.5 mm headphone jack, HDMI
Audio input interface	3.5 mm headphone jack, HDMI
Power supply	VCC6V ~ 40V
Dimensions	100mm × 43mm × 10mm (L × W × H)
Weight	0.2kg

Need to update this model. Please check COFDM-907T.

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Overview

The COFDM-T902T is a professional-grade HD wireless video transmitter designed to deliver stable, high-quality video transmission in real-time, even under challenging environments. Integrating COFDM (Coded Orthogonal Frequency Division Multiplexing) technology with H.264 / MPEG-2 compression, this system provides ultra-low latency, high-resolution video, and robust resistance to multipath interference, making it ideal for UAV applications, mobile broadcasting, field surveillance, and emergency communication.

The transmitter supports HDMI digital input, as well as analog CVBS composite video, enabling compatibility with a wide range of cameras and devices. It is capable of transmitting Full HD 1080p video and is backward compatible with 720p and SD formats, ensuring flexibility across different deployment scenarios. With adjustable RF output power from 1W to 2W and a compact, lightweight form factor (100mm × 43mm × 10mm, 0.2kg), the COFDM-T902T is suitable for UAV integration, mobile news vehicles, or portable monitoring setups.

With a coding delay of less than 500 milliseconds, the transmitter supports high-speed, non-line-of-sight (NLOS) transmission, making it capable of maintaining high-quality video streams in complex environments where line-of-sight communication is not feasible. It also incorporates space diversity reception and AES/DES encryption, ensuring reliable and secure transmission for professional applications.

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Key Advantages

1. Long-Range Transmission
   • Supports 1–10 km transmission distance depending on environment, antenna setup, and output power.
   • Default RF output is 1W, with optional development to 2W or higher to meet specific project requirements.
2. Real-Time Low-Latency Transmission
   • System delay is less than 500 ms, providing near-instantaneous video for surveillance, UAV monitoring, or live broadcasting applications.
3. High-Resolution Video Quality
   • Full HD 1080p with HDMI input and analog CVBS 720p inputs.
   • Compatible with 480P SD and lower resolutions, allowing flexible integration with older camera systems.
   • High image fidelity with smooth motion and accurate color reproduction.
4. Resilient and Stable Signal
   • COFDM modulation ensures strong resistance to multipath fading, interference, and obstacles.
   • Excellent NLOS performance allows video transmission behind buildings, trees, or other obstacles.
5. Flexible and Compact Design
   • Ultra-lightweight 0.2kg and small form factor 100mm × 43mm × 10mm, ideal for UAV payloads or mobile applications.
   • Compact design allows OEM or ODM customization according to project needs.
6. Secure Transmission
   • AES / AES2 / DES / DES2 encryption ensures secure, private video streams.
7. Adjustable Working Frequency
   • Operates across 170 MHz to 930 MHz, with the possibility of customized frequency selection to comply with local spectrum regulations.

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Product Features

1. Video and Audio Input
   • Supports HDMI digital video input for modern cameras and DV devices.
   • Supports analog CVBS composite video input for legacy equipment.
   • Stereo audio input via 3.5 mm headphone jack or HDMI, ensuring synchronized high-quality audio-video transmission.
2. Advanced COFDM Modulation
   • COFDM technology provides reliable reception in high-speed mobile applications, ensuring smooth video in UAV or vehicle-mounted systems.
   • Best-in-class Doppler performance suitable for moving speeds greater than 150 km/h.
3. Low Latency Transmission
   • Transmission delay less than 500 milliseconds, providing near-real-time monitoring for mission-critical applications.
4. Powerful NLOS Capability
   • Able to maintain stable video in non-line-of-sight conditions due to strong diffraction capability and multipath interference resistance.
5. High Sensitivity and Signal Stability
   • Supports high sensitivity for full HD reception over long distances.
   • Space diversity reception reduces the impact of fading and signal drops.
6. Flexible RF Output Power
   • Default 1W RF output, with adjustable power up to 2W.
   • Optional high-power configurations available upon request.
7. Modulation and Bandwidth Options
   • Supports channel bandwidths of 6 / 7 / 8 MHz, configurable for specific project or regional requirements.
   • Guard interval configurable (1/32, 1/16, 1/8, 1/4) for optimal multipath interference handling.
8. Technical Standards
   • Supports H.264 / MPEG-2 encoding with video stream rates from 2 Mbps to 25 Mbps, providing a balance between video quality and bandwidth efficiency.
   • Bit error rate (BER) ≤ 10^-6, ensuring error-free transmission under optimal conditions.
9. High Compatibility
   • HDMI and CVBS input for video; stereo audio inputs supported.
   • Compatible with Full HD 1080p, HD 720p, and SD 480p resolutions.
10. Rugged Design and Power Supply Flexibility
    • Lightweight 0.2kg for portable or UAV applications.
    • Operates on VCC 6V–40V, providing versatility for integration with various power sources.
11. OEM/ODM Customization
    • COFDM-T902T can be customized to meet specific project requirements in terms of RF output, frequency range, interface type, or physical housing.

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Technical Specifications

Parameter	Specification
Working Frequency	170 MHz – 930 MHz (customizable)
Modulation Method	COFDM
RF Output Power	1–2 W (default 1W, customizable)
Channel Bandwidth	6 / 7 / 8 MHz
Video Compression	H.264 / MPEG-2
Video Stream	2 Mbps – 25 Mbps
System Delay	<500 ms
Bit Error Rate (BER)	≤10^-6
Video Input	HDMI, CVBS composite
Audio Input	Stereo, 3.5 mm jack or HDMI
Image Resolution	1080p / 720p / 480p SD
Guard Interval	1/32, 1/16, 1/8, 1/4
Transmission Distance	1–10 km (depending on power and environment)
Power Supply	VCC 6V – 40V
Dimensions	100mm × 43mm × 10mm (L × W × H)
Weight	0.2 kg
Encryption	AES / AES2 / DES / DES2
NLOS Capability	Yes, strong diffraction performance
Space Diversity Reception	Yes

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Applications

The COFDM-T902T HD Wireless Transmitter is suitable for a wide range of professional applications, including:

1. UAV and Drone Applications
   • High-definition video downlink for aerial photography, surveillance, mapping, and industrial inspections.
   • Lightweight and compact design allows seamless integration into UAV payloads.
2. Mobile Broadcasting
   • Portable transmitter for field reporters and live news gathering.
   • Compatible with HDMI cameras and legacy CVBS systems for flexible deployment.
3. Public Security and Law Enforcement
   • Real-time monitoring and live video feeds for police, fire, and emergency response units.
   • AES/DES encryption ensures secure transmission for sensitive operations.
4. Industrial Monitoring and Inspection
   • Supports wireless video monitoring of pipelines, power infrastructure, construction sites, and remote industrial facilities.
5. Emergency Communications
   • Provides stable HD video links for disaster response, firefighting, and search-and-rescue operations.
6. Event Coverage and Broadcasting
   • Ideal for outdoor live events, sports, concerts, or mobile broadcasting setups requiring robust NLOS capabilities.

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Optional Features and Customization

• High-Power Models: Transmitters with RF output above 2W available for extended distance coverage.
• Frequency Customization: Operates in 170–930 MHz by default; extended frequency ranges available for specific requirements.
• Video Input Options: SDI input modules coming soon for professional broadcast cameras.
• Housing Customization: Rugged or UAV-compatible housings for OEM/ODM solutions.
• Encryption Modules: Optional advanced encryption for secure video transmission.
• Custom Output Interfaces: Tailored HDMI, CVBS, or audio outputs for specialized applications.

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Conclusion

The COFDM-T902T HD Wireless Video Transmitter is a professional, reliable, and versatile solution for wireless HD video transmission in UAV, mobile broadcasting, industrial monitoring, and public safety applications. Its combination of COFDM modulation, low-latency H.264/MPEG-2 encoding, compact design, and powerful NLOS capabilities ensures reliable performance in complex and dynamic environments. With flexible input interfaces, adjustable RF output power, and customizable frequency options, it provides a fully adaptable platform for professional-grade wireless video transmission needs.

Whether for aerial reconnaissance, live broadcasting, emergency response, or industrial monitoring, the COFDM-T902T delivers high-quality, low-latency video with maximum reliability and security.