Receptor transmissor COFDM 1080P de longo alcance 20km

Consulta do cliente

"Oi!

Qual modelo usar ao transmitir 1080 vídeo e áudio a uma distância de 6-20 km?

Requer a capacidade de programar os parâmetros do transmissor e do receptor.

COFDM
Alcance de frequência: 280 – 300 MHz
Impedância de RF: 50 ohms
Conector RF: SMA feminino
Menor atraso, o atraso mínimo de ponta a ponta é de 250 ms
128-criptografia e descriptografia bit AES

Texas
– Transmitir potência: 15 – 25 W
– Vídeo de entrada: 1Vp-p, 75ohm
– Entrada de áudio: estéreo
– Formato do programa de vídeo: MPEG-2
– Vídeo de entrada: 1080 50Eu, 1080 60Eu, 1080 24P, 1080 25P, 1080 30P, 1080 50P, 1080 60P, vários modos são adaptativos.
– Formato de vídeo: NTSC, PAL pode ser definido
– Temperatura operacional: -20 ° C ~ +50 °C

RX
– Sensibilidade: -94dBm a 8M
– Imagem de vídeo: 1080
– Modo de saída de áudio: estéreo desequilibrado 300 / 200mv
– Temperatura operacional: -20 ° C ~ +50 °C

Qual é o preço desse transmissor e receptor?"

Análise de requisitos do cliente

Esta investigação descreve um nível profissional sistema de transmissão de vídeo e áudio COFDM de longo alcance, intended for reliable HD broadcast over 6–20 km. The customer clearly understands the technical requirements, specifying both RF and video parameters, along with programmability, baixa latência, e encryption — indicating use in industrial, military, or public safety Aplicações.

Let’s break down the key points:

1. Faixa de transmissão (6–20 km)

The customer needs a long-distance, linha de visão (A) video link.
At such ranges, typical 1W–5W COFDM transmitters are insufficient; hence the specified 15–25W RF power output suggests either:

  • UMA ground-to-ground link requiring strong signal penetration, ou
  • UMA UAV-to-ground ou vehicle-to-command station setup requiring robust signal stability.

This aligns with high-power COFDM transmitters in the 280–300 MHz band, suitable for long-range and non-line-of-sight (NLOS) video transmission.

2. Alcance de frequência: 280–300 MHz

Esse VHF band is less common than the typical 1.4GHz–2.4GHz links used in drones. No entanto, it offers:

  • Better diffraction over obstacles
  • Longer propagation distance
  • Stronger penetration through vegetation and buildings

It is often used in military, mineração, and rescue communications where the environment is complex and high frequency links fail.

3. Baixo atraso e alta definição

UMA minimum delay of 250 Senhora is quite acceptable for broadcast and monitoring.
o 1080P input support (50I/60I/24P/25P/30P/50P/60P) means the customer requires full HD compatibility with professional video cameras or encoders.
O uso de Codificação MPEG-2 indicates a traditional COFDM modulator setup—stable, though less efficient than modern H.265 systems.

4. Criptografia AES-128

Encryption is essential for security — a requirement common in:

  • Defense and law enforcement
  • Surveillance systems
  • Private network transmission

This ensures the signal cannot be easily intercepted or decoded.

5. Parâmetros Programáveis

The request to “program the parameters of the transmitter and receiver” suggests that the customer wants to:

  • Change working frequency or bandwidth
  • Adjust modulation (QPSK, 16QAM, etc.)
  • Set encryption keys or transmission rate

Such functionality points to professional or tactical-grade COFDM systems, not consumer-level equipment.

Produto recomendado

A suitable model for this specification would be similar to the VCAN-280M COFDM Long-Range Video Transceiver sistema:

Principais recursos:

  • Alcance de frequência: 280–300 MHz (Customizável)
  • Potência de saída: 10W / 15W / 20W / 25W options
  • Transmission range: até 20 km LOS
  • Entrada de vídeo: HDMI, DO, or SDI options
  • Codificação: MPEG-2 or H.264 available
  • Latência: 200–250 ms end-to-end
  • Encriptação: 128-bit AES
  • Adjustable modulation bandwidth: 2/4/8 MHz
  • Configurable via PC software or onboard OSD
  • Temperatura de operação: -40°C ~ +70°C
  • Interface RF: SMA feminino, 50Ω impedância
  • IP-rated aluminum enclosure for outdoor use

Formulários

  • Long-range video relay for unmanned vehicles (Uavs, na UGV)
  • Mobile command centers e surveillance vans
  • Broadcast and TV relay links
  • Border patrol e public safety monitoring
  • Search and rescue operations requiring reliable HD video

Preço estimado

While the final price depends on configuration (potência de saída, interface type, and encryption options), typical pricing ranges are:

ConfiguraçãoDescriçãoEstimated Price (USD)
10W COFDM Transceiver1080P, AES128, programmable$1,850 - $2,200
15W COFDM TransceiverLong-range up to 15km$2,300 - $2,600
20–25W COFDM TransceiverUp to 20km+ range, outdoor unit$2,800 - $3,500

(Price includes both TX and RX, power cables, and configuration software.)

Conclusão

The customer’s request represents a professional-grade COFDM long-distance video/audio system, optimized for secure HD transmission over 6–20 km.
A configurable system like VCAN-280M meets all their needs — programmable frequency, low delay, Criptografia AES, and stable full HD video.

Such solutions are ideal for critical missions where reliability, signal security, and long-distance coverage are essential.

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