570MHZ COFDM Digital FPV Video Transmitter สำหรับกล้องอะนาล็อก CVBS

This is the latest digital wireless video transmission. It uses the same compression coding technology as COFDM or DVB-T, which can effectively ensure the stability of the transmission signal. The picture is as clear as the digital TV set-top box at home.

570Mhz COFDM digital FPV video transmitter for CVBS Analog camera
570MHZ COFDM Digital FPV Video Transmitter สำหรับกล้องอะนาล็อก CVBS

Its working central frequency can be customized from 170Mhz to 860Mhz. This is 570Mhz COFDM digital FPV video transmitter for กล้องอะนาล็อก CVBS.

570Mhz COFDM digital FPV video transmitter VTX VRX
570Mhz COFDM digital FPV video transmitter VTX VRX

ก 570MHz COFDM digital FPV video transmitter for CVBS analog cameras is a specialized wireless transmission device designed to convert analog video signals (from a CVBS camera) into a digital format and transmit them over radio frequencies using COFDM (รหัสมัลติเพล็กซ์การแบ่งความถี่มุมฉาก) การมอดูเลต. This technology is widely used in applications requiring robust, low-latency video transmission in challenging environments, เช่น โดรน, ยานพาหนะ, or remote monitoring systems. Below is a detailed breakdown of its key components and functionalities:

570Mhz frequency 2M bandwidth default setting on FPV VRX
570Mhz frequency 2M bandwidth default setting on FPV VRX

1. Core Technology: การปรับ COFDM

  • COFDM splits data into multiple subcarriers, enhancing resistance to multipath interference and signal degradation, especially in non-line-of-sight (NLOS) scenarios like urban areas or forests.
  • NS 570ย่านความถี่เมกะเฮิรตซ์ falls within the UHF range, offering a balance between penetration and coverage. This band is often used for long-range transmissions (เช่น, 10–50 กม) and is less prone to interference compared to higher frequencies like 2.4 GHz.
570Mhz COFDM digital FPV video transmitter VTX default setting
570Mhz COFDM digital FPV video transmitter VTX default setting

2. Integration with CVBS Analog Cameras

  • CVBS (สัญญาณเบสแบนด์วิดีโอคอมโพสิต) is a standard analog video format. The transmitter digitizes this signal using encoders like H.265 or MPEG-2, compressing the data to reduce bandwidth while maintaining image quality (เช่น, 720×576 resolution).
  • ตัวอย่าง: NS SG-H.265 COFDM transmitter supports CVBS input and achieves low-latency encoding (เช่น, 40 ms end-to-end delay), critical for real-time FPV applications.
570Mhz digital FPV VTX 3WPA 50KM with configuration tool
570Mhz digital FPV VTX 3WPA 50KM with configuration tool

3. คุณสมบัติหลักและประสิทธิภาพ

  • แฝงต่ำ: Essential for FPV (มุมมองคนแรก) ควบคุม, with delays as low as 40–600 ms depending on compression and modulation settings.
  • Adaptive Bandwidth: Supports narrowband (1–8 เมกะเฮิรตซ์) configurations to optimize spectrum usage and transmission stability.
  • ความทนทาน: Designed for high-speed mobility (จนถึง 240 กิโลเมตร / ชั่วโมง) และสภาพแวดล้อมที่รุนแรง, with features like AES encryption for secure data transmission.

4. การประยุกต์ใช้งาน

  • Drones/UAVs: Enables real-time HD video feeds for surveillance or cinematography, even in non-line-of-sight conditions.
  • Vehicles/Public Safety: Used in police, ดับเพลิง, or military vehicles for live situational awareness.
  • การตรวจสอบระยะไกล: Deployed in industrial or disaster-response scenarios where wired connections are impractical.

5. ข้อควรพิจารณาทางเทคนิค

  • การแปลงสัญญาณ: Analog-to-digital conversion must minimize noise to preserve video quality.
  • Power and Range: Higher transmission power (เช่น, 10–30 W) extends coverage but increases power consumption.
  • Environmental Factors: ฝน, ใบไม้, or urban structures may attenuate 570 MHz signals, though less severely than higher frequencies36.

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