10WPA COFDM Wireless video-audio switch transmitter and receiver

10WPA COFDM Wireless video-audio switch transmitter and receiver

There is a switch button on the transmitter. It can turn off the transmission of wireless video and only retain the transmission function between the wireless audio transmitter and receiver.

This is customized according to customer requirements. The transmitter is placed in the moving vehicle and the receiver is placed in the monitoring room. The operating frequency, amplifier wattage, housing and power supply can all be customized according to customer requirements.

COFDM Wireless Video & Audio Transmitter with Video ON/OFF Control

Product Overview

This professional-grade COFDM wireless transmitter is specially designed for mobile surveillance, vehicle-mounted operations, and tactical monitoring. The unique feature is a dedicated button to disable video transmission while keeping audio active. This allows operators to switch between full audio-video mode and audio-only mode instantly, depending on the mission needs.

With robust COFDM modulation, the system ensures stable, non-line-of-sight transmission within a 2 km radius, even in urban or complex environments. The receiver can be deployed at a high vantage point or control center, ensuring uninterrupted monitoring.

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Key Features

• Switchable Video ON/OFF Function: Physical button to disable video feed instantly, while keeping audio transmission active.

• Stable COFDM Modulation: Reliable long-range wireless transmission, resistant to multipath and interference.

• Mobile Vehicle Mounting: Compact, lightweight design for vehicle or portable deployment.

• High-Quality Audio: Clear, low-latency audio maintained even when video is disabled.

• Long Range: Up to 2 km transmission radius in urban environments (longer with line-of-sight).

• Receiver Integration: Works with fixed or portable receivers for monitoring in control rooms or elevated points.

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Possible Application Scenarios

• Law Enforcement & Security

  • Vehicle-based covert monitoring with option to transmit only audio when discretion is required.

• Military & Tactical Operations

  • Real-time situational awareness with choice of audio-only or audio-video mode.

• Border & Critical Infrastructure Patrol

  • Patrol vehicles sending audio updates while preserving bandwidth and energy.

• Event & Crowd Monitoring

  • Security teams transmitting video when needed, audio-only during low-activity periods.

• Emergency Response

  • Firefighters, rescue teams, or disaster management using audio-only mode to maintain communication under bandwidth-limited conditions.

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Customization Options

To meet diverse customer requirements, we offer a wide range of customization:

• Frequency Band: 300 MHz – 6 GHz (customizable based on country regulations).

• Transmission Power: Configurable from 1W to 20W for different coverage needs.

• Video ON/OFF Control: Hardware button, remote control via RS232/USB, or IP-based software command.

• Audio Options: Mono, stereo, or encrypted digital audio.

• Video Format: Standard H.264/H.265 encoding with optional black-screen mode instead of full video cut-off.

• Encryption: AES128/256 secure transmission.

• Form Factor: Ruggedized casing for military use, or lightweight version for UAV/vehicle applications.

• Power Supply: DC 12V, vehicle battery direct connection, or rechargeable battery pack.

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Why Choose This Solution?

• Unique video disable function fits special surveillance and tactical needs.

• Designed for mission flexibility – one device covers multiple use cases.

• Highly customizable to suit different industries, frequency regulations, and operational scenarios.

• Proven reliability and stability with COFDM technology in complex environments.

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This product is ideal for customers who require flexible monitoring solutions with the ability to switch between audio-video and audio-only transmission.

Customizable Options for COFDM Video Transmitters

1. Operating Frequency Range

   • Can be customized to specific frequencies or bands (e.g., 300MHz, 700MHz, 1.2GHz, 1.4GHz, 2.4GHz, 5.8GHz).

   • Supports single fixed frequency or multi-band switching.

2. RF Output Power

   • Configurable from 500mW, 2W, 5W, 10W, 20W up to 50W+.

   • Adjustable based on the required transmission distance and environment.

3. Channel Bandwidth

   • Typically 1MHz–8MHz, some models support up to 20MHz.

   • Can be fixed or adjustable according to customer needs.

4. Modulation and FEC

   • Supports QPSK, 16QAM, and 64QAM.

   • FEC options: 1/2, 2/3, 3/4, 7/8, etc.

5. Input/Output Interfaces

   • Video input: HDMI, SDI, CVBS, IP (RJ45 Ethernet), USB.

   • Data: RS232/RS485, Ethernet, CAN bus.

   • Optional fiber optic or SFP module for extended applications.

6. Encryption

   • AES 128/256, DES, or proprietary encryption.

   • Hardware-level or software-level encryption is available.

7. Antenna & MIMO

   • Single-antenna or dual-antenna diversity.

   • Fiberglass omnidirectional antenna, Yagi or flat-panel directional antenna.

   • Options for 2×2 or 4×4 MIMO systems.

8. Power Supply & Consumption

   • Customizable input voltage (DC 12V, 24V, 48V).

   • Low-power optimized designs are available for UAV and portable use.

9. Design & Housing

   • Industrial-grade metal housing, waterproof/dustproof (IP65/IP67).

   • Standard 1U or 2U rack housing.

   • Compact board-level modules for embedded integration.

10. Protocols & Features

• • Supports UDP, RTSP, RTP, ONVIF, SRT.

  • Optional GPS positioning, intercom/voice, and telemetry data return.

11. Other Options

• • Wide operating temperature (-40℃ to +70℃ for industrial use).

  • Long-range optimization (tens of kilometers or more).

  • Ultra-low latency optimization (down to 50–80ms).

Application Scenarios

• Law Enforcement & Security Patrols
  Ideal for vehicle-mounted surveillance, allowing officers to transmit audio only when discretion is needed, or full audio-video for detailed monitoring.

• Military & Tactical Operations
  Supports real-time situational awareness in mobile units, with the flexibility to switch between audio-video and audio-only modes depending on operational requirements.

• Border Control & Critical Infrastructure Monitoring
  Perfect for patrol vehicles sending audio updates continuously, conserving bandwidth while maintaining critical communication.

• Event & Crowd Monitoring
  Security teams can transmit live video when needed, and switch to audio-only mode during periods of low activity or to reduce network load.

• Emergency Response & Disaster Management
  Firefighters, rescue teams, and emergency personnel can maintain reliable audio communication when video transmission is unnecessary or bandwidth is limited.

• Mobile Media Production
  Useful for outdoor filming or live broadcasting where sometimes only audio is required, reducing power consumption and video data load.

• Remote Environmental or Industrial Monitoring
  Vehicles or mobile units transmitting audio sensors continuously while sending video only when critical events are detected.

Customizable Options for COFDM Video Receivers

1. Operating Frequency Range

   • Can be customized to specific frequency bands (e.g., 300–860MHz, 1.2GHz, 1.4GHz, 2.4GHz, 5.8GHz).

   • Supports fixed frequency, frequency hopping, or wideband scanning.

2. Channel Bandwidth

   • Adjustable from 1MHz–8MHz (some models up to 20MHz).

   • Customer can choose fixed bandwidth or multi-band support.

3. Demodulation & FEC

   • Compatible with QPSK, 16QAM, 64QAM.

   • Forward Error Correction (1/2, 2/3, 3/4, 7/8) customizable for robustness.

4. Diversity Reception / MIMO

   • Single antenna, dual-antenna diversity, or multi-antenna reception.

   • Options for 2×2 MIMO or 4×4 MIMO to improve stability.

5. Video Output Interfaces

   • SDI, HDMI, CVBS, IP stream output (RJ45 Ethernet).

   • Optional USB, ASI, or optical fiber output.

6. Network Protocol Support

   • UDP, RTP, RTSP, ONVIF, SRT streaming.

   • Custom protocols available for integration into existing systems.

7. Decryption / Security

   • AES128/256, DES, or user-defined decryption.

   • Can match the transmitter’s encryption scheme.

8. Form Factor & Housing

   • Rack-mount receiver, portable handheld monitor, or ruggedized field unit.

   • Waterproof/dustproof designs (IP65/IP67) available.

9. Power Supply Options

   • DC input (12V, 24V, 48V) or AC 110–220V.

   • Battery-powered versions for field use.

10. Latency & Performance

    • Optimized for low latency (<100ms) for UAV and live broadcasting.

    • Long-range reception tuning for tens of kilometers.

11. Antenna Type
    • Fiberglass omnidirectional antenna, Yagi or flat-panel directional antenna.

12. Additional Features

• • Built-in DVR (recording function).

  • GPS data menu overlay, telemetry reception.

  • Multi-channel / multi-frequency auto-scan receiver.