Récepteur émetteur vidéo AV SD CVBS bon marché pour drones FPV

Récepteur émetteur vidéo AV SD CVBS bon marché pour drones FPV

Émetteur vidéo sans fil COFDM & Receiver – Long-Range, Sécurisé, Low-Latency

Introduction

The COFDM-912T Wireless Video Transmitter and Receiver system is a professional-grade solution designed for longue portée, real-time video and data transmission. Built on advanced COFDM (Multiplexage par répartition orthogonale de la fréquence codée) technologie de modulation and high-performance MPEG-2/H.264 video compression, ce système offre écurie, résistant aux interférences, and encrypted digital video links for UAVs, à l'UGV, surveillance de la sécurité, reconnaissance militaire, diffusion en direct, and other demanding applications.

Unlike conventional analog systems, COFDM technology ensures reliable video quality in both Line-of-Sight (LA) and Non-Line-of-Sight (NLOS) conditions, even in complex environments such as urban areas, forêts, et terrain montagneux. Avec integrated PA (Amplificateur de puissance) modules of 1W or 2W, the system can achieve transmission distances of up to 30 km LDV et 1.5 km NLOS, making it a cost-effective yet powerful option for long-range wireless communication.

Compact in design, rugged in structure, and easy to deploy, the COFDM-912T is available as a complete set (émetteur, récepteur, antennes, and cables) et soutient both CVBS AV input and HDMI output, ensuring broad compatibility with a wide range of cameras and display devices. Whether used for FPV drone video links, diffusion d'événements en direct, or covert surveillance operations, this wireless transmission system offers sécurisé, faible latence, and reliable performance in every scenario.

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Principales fonctionnalités

• Modulation COFDM avancée
  Provides robust performance against multipath interference, enabling clear video transmission in both LOS and NLOS environments.

• AES-128 Video Encryption
  Built-in secure encryption ensures that your video data is protected against unauthorized access or interception.

• Longue portée de transmission

  • Jusqu'à 30 km LDV (Ligne de vue) with a 2W power amplifier.

  • Jusqu'à 1.5 km NLOS (Hors ligne de vue) en milieu urbain ou obstrué.

• Low Latency Video Transmission
  Latence de bout en bout de 200–300 ms, suitable for FPV, UAV control, and live monitoring applications.

• Dual Input & Sortir

  • Émetteur: CVBS (DE) analog input.

  • Récepteur: DE (CVBS) + HDMI digital output.

• Vidéo + Data Downlink
  Supports simultaneous transmission vidéo et transparent UART data downlink, enabling telemetry or sensor data transfer from the transmitter to the receiver.

• Configurable Frequency
  Frequency can be modified via a carte de configuration des paramètres, supporting custom frequencies within 170–860 MHz gamme.

• Multiple Modulation & Options de bande passante
  Prend en charge QPSK, 16QAM, and 64QAM modulation with adjustable bandwidths from 2 MHz en 8 MHz.

• Compact & Conception légère
  Small form factor with rugged aluminum housing for easy integration into UAVs, véhicules, or portable systems.

• Full Set Package
  Includes transmitter, récepteur, antennes, and cables, ready for immediate deployment.

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Caractéristiques

Émetteur (COFDM-912T)

• Tension de fonctionnement: DC 11V ~ 13V (20W PA requires 24V–28V)

• Consommation actuelle: ≤1.5A @ 12V (2En PA)

• Entrée vidéo: CVBS composite video (PAL by default, NTSC optional)

• Encodage vidéo: MPEG-2 / H.264

• Résolution: 720×576 @ ≥4 Mbps stream

• Interface de données: UART one-way transparent transmission

• Baud Rates: 1200 à 230400 bps

• Encryption: AES-128 supported

• Cartographie des modulations: QPSK, 16QAM, 64QAM

• Correction d'erreur directe (FEC): 1/2, 2/3, 3/4, 5/6, 7/8

• Transporteurs: 2K

• Gamme de fréquences: 170–860 MHz (personnalisable; stock 300 MHz & 600 MHz models)

• Bande passante: Réglable 2/3/4/5/6/7/8 MHz

• Puissance de transmission: 1W ou 2W (5W/10W/20W optional)

• Dimensions: 90 × 65 × 22 mm

• Logement: Aluminum, anticorrosion, antichoc

Récepteur

• Tension de fonctionnement: C.C 12 V <0.3UN

• RF Input Range: 170–860 MHz

• Bande passante: 2–8 MHz réglable

• Niveau d'entrée RF: -98 dBm ~ 0 dBm (en fonction de la bande passante)

• Impédance d'entrée: 50 Oh (SMA femelle)

• Démodulation: COFDM

• Constellation Modes: QPSK, 16QAM, 64QAM

• FEC Options: 1/2, 2/3, 3/4, 5/6, 7/8

• Output Video: CVBS (3.5mm AV), HDMI

• Résolution: 720×576 @ 6 MHz

• Température de fonctionnement: -20 °C ~ +50 °C

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Applications

• Véhicules aériens sans pilote (drones / Drones)
  Real-time FPV video streaming from drones to ground stations. Recommended with optional band-pass wave filters for improved anti-interference.

• Unmanned Ground Vehicles (à l'UGV) & Robotique
  Provides wireless video feedback and telemetry data in complex ground operations.

• Sécurité & Law Enforcement
  Idéal pour surveillance secrète, tactical reconnaissance, and border monitoring, thanks to its compact size and encryption support.

• Radiodiffusion & Live Events
  Utilisé dans diffusion sportive, outdoor live events, and news reporting to transmit high-quality video over long distances.

• Marin & Mountainous Environments
  Reliable performance in challenging terrains where standard RF systems fail.

• Militaire & Sécurité publique
  Deployed in field reconnaissance, intervention d'urgence, and disaster recovery, providing stable video feeds under harsh conditions.

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Options personnalisables

• Personnalisation de la bande de fréquence
  Disponible en 170–860 MHz gamme, with support for specific customer-requested frequencies such as 260 MHz, 450 MHz, 610 MHz, 970 MHz, 1180 MHz, 1230 MHz, etc..

• Options d'amplificateur de puissance
  Standard: 1W ou 2W.
  Optional upgrades: 5W, 10W, 20W for extended range applications.

• Video Input/Output Formats

  • COPAIN (défaut)

  • NTSC (optional upon request)

  • Entrée HDMI (available in higher models)

• Relay Transmission Solutions
  Integration with vehicle-mounted or portable relay systems to extend coverage beyond 30 km.

• Options d'antenne

  • Omni-directional fiberglass antennas for general use.

  • Antennes directionnelles à gain élevé pour une portée maximale.

• Transmission de données
  Prise en charge UART telemetry data + vidéo in one system (simplex, downlink only).

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Advantages Over Conventional Systems

1. Cheaper Yet Longer Range – Compared with traditional analog transmitters or IP mesh systems, COFDM provides higher stability at a lower cost.

2. Strong NLOS Capability – Works effectively in urban blocks, forêts, and moving vehicles where other systems fail.

3. Compact et léger – Ideal for Intégration de drones, with transmitter weights as low as 154 grammes.

4. Integrated Signal Monitoring – Receiver’s built-in screen displays signal strength, helping users adjust antenna positioning for optimal performance.

5. Expandable Solutions – From small portable UAV sets à high-power vehicle relay systems, scalable to meet any professional need.

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Safety & Usage Warnings

• Always connect the antenna before powering on the transmitter to avoid damaging the PA (Amplificateur de puissance).

• Place antennas in elevated and unobstructed locations for the best performance.

• Maintain proper antenna height difference between transmitter and receiver for improved link stability.

• Do not block antennas during operation to prevent signal attenuation.

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Le forfait comprend

• 1 × COFDM Transmitter

• 1 × COFDM Receiver

• 2 × Antennas (Émission & Côté réception)

• 1 × Accessories Cable Set

 

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Conclusion

The COFDM-912T Wireless Video Transmitter & Receiver system combines long-distance performance, robust encryption, and flexible customization, making it an ideal solution for UAV, sécurité, and broadcasting applications. C'est petite taille, faible latence, and reliable COFDM modulation set it apart from conventional video transmission systems, ensuring professional users get a cost-effective, écurie, and secure wireless link in both LOS and NLOS conditions.

With multiple frequency, pouvoir, and input/output options available, the COFDM-912T can be tailored to meet diverse application requirements. Whether you need 10 km for drone FPV, 30 km for air-to-ground video, ou relay systems for ultra-long range, this product delivers performance that is both cheaper and longer-lasting.

FAQ

T1: How does Point-to-Multipoint (P2MP) work, and how many receivers can connect to one transmitter?

UN: Our COFDM video transmission system operates in a broadcast mode, similar to a TV broadcasting station. One transmitter can send the same wireless signal to multiple receivers simultaneously.

As long as the receivers are within the effective signal coverage area and configured to the same frequency and parameters, they can all receive the signal at the same time.
Théoriquement, there is no fixed limit to the number of receivers; donc, the maximum number cannot be precisely specified and depends on practical deployment conditions.

T2: Is the IVCAN COFDM system compatible with third-party or existing transmitters and receivers?

UN: Compatibility depends on multiple technical factors, y compris la fréquence, bande passante, modulation, and transmission protocol. Without detailed specifications or actual testing, compatibility with third-party or existing equipment cannot be confirmed. To ensure accurate results, compatibility testing is required before we can provide a definitive answer.

Customers are welcome to share detailed technical information about their existing devices so we can evaluate potential compatibility or recommend appropriate testing solutions.