远距离 1080P COFDM 发射器接收器 20km

客户询价

“Hi!

Which model to use when transmitting 1080 video and audio over a distance of 6-20 千米?

Requires the ability to program the parameters of the transmitter and receiver.

COFDM
频率范围: 280 – 300 兆赫
RF impedance: 50 欧姆
RF connector: SMA女
Lower delay, the minimum end-to-end delay is 250ms
128-bit AES encryption and decryption

得克萨斯州
– Transmit power: 15 – 25 w ^
– Input video: 1VP-P, 75欧姆
– Input audio: 立体声
– Video program format: MPEG-2
– Input video: 1080 50我, 1080 60我, 1080 24P, 1080 25P, 1080 30P, 1080 50P, 1080 60P, various modes are adaptive.
– Video format: NTSC, PAL 可设置
– Operating temperature: -20 °C〜 +50 摄氏度

接收
– Sensitivity: -94dBm at 8M
– Video image: 1080
– Audio output mode: stereo unbalanced 300 / 200mv
– Operating temperature: -20 °C〜 +50 摄氏度

What is the price of such a transmitter and receiver?”

Customer Requirement Analysis

This inquiry describes a professional-grade long-range COFDM video and audio transmission system, 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, 低潜伏期, 和 encryption — indicating use in 工业的, military, or public safety 申请.

Let’s break down the key points:

1. 传输范围 (6–20 km)

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

一种 ground-to-ground link requiring strong signal penetration, 或者
一种 UAV-to-ground 或者 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 (非视距) video transmission.

2. 频率范围: 280–300 MHz

这 VHF band is less common than the typical 1.4GHz–2.4GHz links used in drones. 然而, it offers:

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

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

3. Low Delay and High Definition

一种 minimum delay of 250 小姐 is quite acceptable for broadcast and monitoring.
这 1080P input support (50I/60I/24P/25P/30P/50P/60P) means the customer requires full HD compatibility with professional video cameras or encoders.
使用 MPEG-2编码 indicates a traditional COFDM modulator setup—stable, though less efficient than modern H.265 systems.

4. AES-128 Encryption

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. Programmable Parameters

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, 等等。)
Set encryption keys or transmission rate

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

应用

Long-range video relay for unmanned vehicles (无人机, 在无人车)
Mobile command centers 和 surveillance vans
Broadcast and TV relay links
Border patrol 和 public safety monitoring
Search and rescue operations requiring reliable HD video

Estimated Pricing

While the final price depends on configuration (输出功率, interface type, and encryption options), typical pricing ranges are:

组态	描述	Estimated Price (美元)
10W COFDM Transceiver	1080P, AES128, programmable	$1,850 - $2,200
15W COFDM Transceiver	Long-range up to 15km	$2,300 - $2,600
20–25W COFDM Transceiver	Up to 20km+ range, outdoor unit	$2,800 - $3,500

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

结论

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, AES 加密, and stable full HD video.

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