گیرنده فرستنده ویدئویی SD CVBS AV ارزان برای پهپادهای FPV

گیرنده فرستنده ویدئویی SD CVBS AV ارزان برای پهپادهای FPV

فرستنده ویدیوی بی سیم COFDM & Receiver – Long-Range, امن, Low-Latency

مقدمه

The COFDM-912T Wireless Video Transmitter and Receiver system is a professional-grade solution designed for دوربرد, real-time video and data transmission. Built on advanced COFDM (مولتی پلکسینگ تقسیم فرکانس متعامد کد شده) تکنولوژی مدولاسیون and high-performance MPEG-2/H.264 video compression, this system delivers پایدار, interference-resistant, and encrypted digital video links for UAVs, در UGV, نظارت بر امنیت, شناسایی نظامی, پخش زنده, and other demanding applications.

Unlike conventional analog systems, COFDM technology ensures reliable video quality in both Line-of-Sight (LOS) and Non-Line-of-Sight (NLOS) شرایط, even in complex environments such as urban areas, جنگل ها, و زمین های کوهستانی. با integrated PA (تقویت کننده قدرت) ماژول ها of 1W or 2W, the system can achieve transmission distances of up to 30 کیلومتر LOS و 1.5 کیلومتر 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 (فرستنده, گیرنده, آنتن ها, و کابل ها) and supports 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, live event broadcasting, or covert surveillance operations, this wireless transmission system offers امن, تاخیر کم, and reliable performance in every scenario.

---

ویژگی های کلیدی

• مدولاسیون پیشرفته COFDM
  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.

• Long Transmission Range

  • تا 30 کیلومتر LOS (خط دید) with a 2W power amplifier.

  • تا 1.5 کیلومتر NLOS (غیر خط دید) in urban or obstructed environments.

• Low Latency Video Transmission
  End-to-end latency of 200– 300 میلی‌ثانیه, suitable for FPV, UAV control, و برنامه های نظارت زنده.

• Dual Input & خروجی

  • فرستنده: CVBS (OF) analog input.

  • گیرنده: OF (CVBS) + HDMI digital output.

• ویدئو + Data Downlink
  Supports simultaneous انتقال تصویری و transparent UART data downlink, enabling telemetry or sensor data transfer from the transmitter to the receiver.

• Configurable Frequency
  Frequency can be modified via a برد پیکربندی پارامتر, supporting custom frequencies within 170-860 مگاهرتز محدوده.

• Multiple Modulation & گزینه های پهنای باند
  QPSK را پشتیبانی می کند, 16QAM, and 64QAM modulation with adjustable bandwidths from 2 مگاهرتز به 8 مگاهرتز.

• فشرده & طراحی سبک وزن
  Small form factor with rugged aluminum housing for easy integration into UAVs, وسایل نقلیه, or portable systems.

• Full Set Package
  Includes transmitter, گیرنده, آنتن ها, و کابل ها, ready for immediate deployment.

---

مشخصات

فرستنده (COFDM-912T)

• ولتاژ عملیاتی: DC 11V ~ 13V (20W PA requires 24V–28V)

• مصرف فعلی: ≤1.5A @ 12V (2در PA)

• Video Input: CVBS composite video (PAL by default, NTSC optional)

• رمزگذاری ویدیو: MPEG-2 / H.264

• Resolution: 720×576 @ ≥4 Mbps stream

• رابط داده: UART one-way transparent transmission

• Baud Rates: 1200 به 230400 bps

• رمزگذاری: AES-128 supported

• نقشه برداری مدولاسیون: QPSK, 16QAM, 64QAM

• تصحیح خطای فوروارد (FEC): 1/2, 2/3, 3/4, 5/6, 7/8

• حامل ها: 2K

• Frequency Range: 170-860 مگاهرتز (قابل تنظیم; stock 300 مگاهرتز & 600 MHz models)

• Bandwidth: قابل تنظیم 2/3/4/5/6/7/8 مگاهرتز

• قدرت انتقال: 1W or 2W (5W/10W/20W optional)

• Dimensions: 90 × 65 × 22 میلی متر

• مسکن: آلومینیوم, ضد خوردگی, shockproof

گیرنده

• ولتاژ عملیاتی: DC 12 ولت <0.3آ

• RF Input Range: 170-860 مگاهرتز

• Bandwidth: 2–8 MHz adjustable

• سطح ورودی RF: -98 dBm ~ 0 DBM به (depending on bandwidth)

• امپدانس ورودی: 50 اوه (SMA زن)

• دمدولاسیون: COFDM

• Constellation Modes: QPSK, 16QAM, 64QAM

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

• Output Video: CVBS (3.5mm AV), HDMI

• Resolution: 720×576 @ 6 مگاهرتز

• دمای عملیاتی: -20 °C ~ +50 درجه سانتی گراد

---

برنامه های کاربردی

• وسایل نقلیه هوایی بدون سرنشین (پهپادها / هواپیماهای بدون سرنشین)
  Real-time FPV video streaming from drones to ground stations. Recommended with optional band-pass wave filters for improved anti-interference.

• Unmanned Ground Vehicles (در UGV) & رباتیک
  Provides wireless video feedback and telemetry data in complex ground operations.

• امنیت & مجری قانون
  ایده آل برای نظارت پنهان, tactical reconnaissance, and border monitoring, thanks to its compact size and encryption support.

• پخش & رویدادهای زنده
  Used in پخش ورزشی, outdoor live events, and news reporting to transmit high-quality video over long distances.

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

• نظامی & ایمنی عمومی
  Deployed in field reconnaissance, واکنش اضطراری, and disaster recovery, providing stable video feeds under harsh conditions.

---

گزینه های قابل تنظیم

• سفارشی سازی باند فرکانس
  Available in 170-860 مگاهرتز محدوده, with support for specific customer-requested frequencies such as 260 مگاهرتز, 450 مگاهرتز, 610 مگاهرتز, 970 مگاهرتز, 1180 مگاهرتز, 1230 مگاهرتز, و غیره.

• گزینه های تقویت کننده قدرت
  استاندارد: 1W or 2W.
  Optional upgrades: 5W, 10W, 20W for extended range applications.

• Video Input/Output Formats

  • PAL (پیش فرض)

  • NTSC (optional upon request)

  • ورودی HDMI (available in higher models)

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

• گزینه های آنتن

  • Omni-directional fiberglass antennas for general use.

  • آنتن های جهت دار با بهره بالا for maximum range.

• انتقال داده
  Supports UART telemetry data + ویدئو in one system (simplex, downlink only).

---

Advantages Over Conventional Systems

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

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

3. Compact and Lightweight – Ideal for UAV integration, with transmitter weights as low as 154 گرم.

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 به high-power vehicle relay systems, scalable to meet any professional need.

---

ایمنی & Usage Warnings

• Always connect the antenna before powering on the transmitter to avoid damaging the PA (تقویت کننده قدرت).

• 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.

---

بسته شامل

• 1 × COFDM Transmitter

• 1 × COFDM Receiver

• 2 × Antennas (TX & سمت RX)

• 1 × Accessories Cable Set

 

---

نتیجه گیری

The COFDM-912T Wireless Video Transmitter & Receiver system combines long-distance performance, robust encryption, and flexible customization, making it an ideal solution for UAV, امنیت, and broadcasting applications. آن اندازه کوچک, زمان تاخیر کم, and reliable COFDM modulation set it apart from conventional video transmission systems, ensuring professional users get a cost-effective, پایدار, and secure wireless link in both LOS and NLOS conditions.

With multiple frequency, قدرت, 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, یا relay systems for ultra-long range, this product delivers performance that is both cheaper and longer-lasting.

پرسش و پاسخ

Q1: How does Point-to-Multipoint (P2MP) work, and how many receivers can connect to one transmitter?

آ: 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.
In theory, there is no fixed limit to the number of receivers; بنابراین, the maximum number cannot be precisely specified and depends on practical deployment conditions.

Q2: Is the IVCAN COFDM system compatible with third-party or existing transmitters and receivers?

آ: Compatibility depends on multiple technical factors, including frequency, پهنای باند, مدولاسیون, 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.