50W PA 280–300MHz COFDM Wireless Video Transmitter Receiver

50W PA 280–300MHz COFDM Wireless Video Transmitter Receiver

Overview

The 50W PA 280–300MHz COFDM Wireless Video Transmitter and Receiver is a long-distance, high-power digital video transmission system designed for professional-grade aerial, ground, and marine video communication applications.
Operating within the 280–300MHz frequency range, this system delivers high penetration, ultra-long range, and stable video transmission performance under both LOS (Line-of-Sight) and NLOS (Non-Line-of-Sight) conditions.

By adopting advanced COFDM modulation and H.264/H.265 compression technologies, it enables real-time transmission of high-definition HDMI video with excellent anti-interference and mobility capabilities. The integrated 50-watt power amplifier (PA) ensures reliable long-range communication — reaching over 100 kilometers line-of-sight when paired with a high-gain antenna.

This system is specially engineered for UAVs, UGVs, USVs, public security, law enforcement, military reconnaissance, and live broadcast scenarios where high-quality, low-latency, and secure wireless video communication is essential.

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Key Features

• Powerful 50-Watt RF Output

  • Significantly extends transmission distance and improves signal stability over rugged terrain and over-water environments.

  • Supports 100–150 km LOS range when equipped with matching directional antennas.

• Wide Frequency Range (280–300 MHz)

  • Custom-tuned for long-distance, low-frequency transmission with excellent diffraction ability and wall penetration.

  • Frequency can be customized in 1 MHz steps to fit your local frequency allocation.

• Advanced COFDM Modulation

  • Multi-carrier technology with robust resistance to multipath fading and interference.

  • Supports QPSK / 16QAM / 64QAM modulation mapping and multiple FEC and guard interval settings.

• High-Definition Video Transmission

  • Supports 1080P@60fps HDMI video input.

  • Compatible with standard-definition CVBS analog input (optional) for legacy cameras.

• Low Latency Encoding

  • Uses H.264/H.265 compression with end-to-end latency as low as 200–250ms.

  • Optional ultra-low latency version (<50ms) available for real-time video applications such as FPV or defense.

• AES-128 Encryption

  • Ensures secure and private communication, preventing unauthorized access or interception.

• All-Environment Durability

  • Rugged aluminum alloy chassis with heat sink design.

  • Optional IP67 waterproof and shockproof housing for marine or harsh-field applications.

• Flexible Power Options

  • Operates from DC 11–13V, compatible with battery packs and vehicle power systems.

  • Power consumption depends on RF output (approx. 6–8A @12V for 50W PA).

• LOS and NLOS Operation

  • Supports both line-of-sight and non-line-of-sight transmission.

  • Effective for urban, mountainous, or over-sea communication environments.

• Data & Telemetry Transmission

  • Integrated transparent RS232 serial data link supports bidirectional telemetry, control, or sensor data alongside the video signal.

• Customizable Design

  • Optional antennas, frequencies, output power levels, and interfaces (HDMI, SDI, CVBS).

  • Full OEM/ODM service for integration into drone or vehicle platforms.

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Technical Specifications

Transmitter Specifications

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Receiver Specifications

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Application Scenarios

The 50W COFDM Wireless Video Transmission System is widely used in demanding video communication fields requiring stable HD video links over long distances or complex terrains:

• Unmanned Systems

  • UAV / Drone real-time video downlink

  • UGV (Unmanned Ground Vehicle) & USV (Unmanned Surface Vessel)

• Public Security & Law Enforcement

  • Police surveillance, emergency response, border patrol

  • Real-time transmission for mobile command centers

• Broadcast and Media

  • Live events, outdoor sports, mountain climbing, aerial broadcasting

  • Wireless HD camera links for TV stations or ENG crews

• Military and Defense

  • Tactical reconnaissance, convoy monitoring, and battlefield communication

• Marine Communication

  • Ship-to-shore, boat-to-boat video communication under long distance or NLOS conditions

• Industrial Inspection

  • Remote oilfield, mining, or infrastructure monitoring systems

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Precautions for Custom Orders

When placing a custom order, please specify:

1. Frequency Band: Default 280–300MHz; other bands optional from 170–860MHz.

2. Output Power: 1W, 2W, 5W, 10W, 20W, or 50W available.

3. Video Interface: HDMI / SDI / CVBS.

4. Antenna Type & Length:

   • Transmitter: short omnidirectional antenna for UAVs or long whip for ground use.

   • Receiver: long omnidirectional or Yagi directional antenna for maximum gain.

5. Enclosure Type: Standard aluminum or waterproof/shockproof “three-proof” shell.

6. Power Supply: 12V DC battery, vehicle power, or AC adapter.

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FAQs

Q1: What is the maximum transmission distance for the 50W COFDM system?
A: In line-of-sight conditions with a 1.8m FRP antenna, it can reach up to 150 km. For over-sea transmission, the range may even exceed 160 km due to better reflection and low-frequency propagation.

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Q2: Can it work in a cold environment like –20°C?
A: Yes. Both the transmitter and receiver are rated for –20°C to +50°C, suitable for high-altitude or winter operations.

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Q3: Does it support both HDMI and CVBS input?
A: Yes. The default is HDMI. If you need a lower-cost version or to connect analog cameras, choose the CVBS (Yellow RCA) model.

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Q4: Can I use this system for ground-to-ground transmission?
A: Yes. However, both antennas must be elevated to improve the signal path. On flat ground with low antenna height, the typical range is 2–5 km. Increasing antenna height or using directional antennas significantly increases range.

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Q5: Can I transmit telemetry and video at the same time?
A: Yes. The system includes a transparent RS232 data channel for transmitting telemetry, GPS, or control data alongside video.

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Q6: How long can the transmitter work on battery power?
A: For 50W output, a 12V 12Ah lithium battery provides about 1.5–2 hours of continuous operation. Power duration depends on transmission output and battery capacity.

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Q7: Are the receiver antennas diversity type?
A: Yes. The receiver supports dual-antenna diversity reception, improving stability and reducing signal dropouts during motion or in complex terrains.

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Q8: Can the transmitter display signal strength feedback to the operator?
A: Yes. The optional R380 monitoring app or receiver interface can display signal strength, helping operators optimize antenna alignment.

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Q9: Can it be customized to other frequencies such as 1500MHz or 5.8GHz?
A: Yes. Custom frequency versions (200–6000 MHz) are available upon request, depending on local spectrum regulations.

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Q10: What type of antenna is recommended for marine or ship use?
A: We recommend 1.8m FRP omnidirectional antennas or Yagi directional antennas with waterproof connectors for over-sea operation.

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Still Have a Question?

If you need customized solutions for your UAV, vehicle, or ground communication system, please contact our technical team.
We provide OEM/ODM support, including frequency calibration, integration guide, and antenna matching design.