Wireless Video Receiver

COFDM-221R HD Wireless Video Receiver COFDM AV 1080P Transmission image Transceiver CVBS 170~900Mhz

Features

1. Now Support DVB-T / DVB-T2 + High Speed;
2. COFDM receiver can realize the video transmission between the mini transmitter and receiver;
3. Support H.264/AVC, MPEG2~MPEG4 HD Video Decode;
4. Available to upgrade the firmware via USB slot;
5. USB Recorder, PVR, multimedia play, support HDD;
6. Auto searching and updating bit rate information;
7. Small size design light weight. Professional diversity receiver;
8. Memory function after power off;
9. Real-time transmit high quality HD image at high speed mobile or NLOS;
10. Multi Language Support: English, Russian,Thai, Spanish etc;
11. Particularly suitable for use in complex environment;
12. 6MHz, 7MHz, 8MHz Band-wide;
13. HD output (One route);
14. 2x Video output, Stereo Audio-R, Audio-L output;
15. Support IR output and extended remote sensor receiver;
16. DC Power jack, one cigarette lighter to connect easily
17. 10~32V wide power supply, special designed for car or bus.
18. Tuner support powerful active amplified antenna

Specification

Brand Name:	OEM
Model Number:	COFDM-221R
Certification:	CE Applicable
Place of Origin:	China
MOQ:	1pcs
Price:	USD
Payment Terms:	L/C, T/T, Western Union, MoneyGram Paypal
Supply Ability:	1000pcs per month
Delivery Time:	20 working days
Packaging Details:	Carton Box
Output  frequency:	46-860MHz; per 0.5MHz adjustable
Modulation type:	COFDM
Audio output:	Stereo
Video Compression:	H.264 MPEG2-MPEG4
Video Output:	CVBS,HDMI
Receive sensitivity:	-80dBm
Encryption:	AES-128 bit

Technology Data

 

TV Standard	Fully SD/HD Tuner DVB-T/T2, SD/HD MPEG2 and MPEG4 AVC H.264
Video Resolution	Full HD tuner DVB-T2,support up to 1080P
Video System	Automatic PAL/NTSC conversion
Video Ratio	Aspect ratio 16:9 and 4:3
Channels Number	1000 channels memory
OSD Language	OSD language: English, Thailand, Russia, Spainish more please visit www.dvb-t2.cn
EPG	Small windows screen picture with EPG graphic menu,7-Day EPG function
Channel Search	Auto search & Manual search function
Software upgrade	Software upgrade via USB
Teletext	Support teletext/ subtitle/audio language selection,VBI Teletext,Teletext/ Bit Map subtitle
Save Channel	Automatic save for last channel
LCN	Support Logic Channel Number(LCN)
1.Main Chip Sets
Flash Memory	32MB Serial Flash
DDR2 Memory	512MB
2.Tuner
Input Frequency	VHF: 174~230MHz,UHF: 470~862MHz
RF input Level	-20~-83dBm
RF Bandwidth	6MHz-7MHZ and 8MHZ
Modulation	QPSK,16QAM,64QAM,256QAM
3.USB Decode
DVR supporting	Stereo/MONO/Left/Right
Media Supporting	USB2.0 Port, playback the media in USB flash disk or USB HDD
USB2.0 HOST	DVR with USB HDD, Time shifting with USB HDD
4.Multimedia
music	MP3,WMA
photo	JPEG,BMP,PNG
Video
5.Video Decode
Decode Format	MPEG-2 MP@HL, MPEG-4 SP, DIVX1 3.11(Optional), 4.X, 6.X,FLV Format,
	H.264MP@HL, VC-1,RM&RMVB(Optional)
Output Format	1080p,1080i,720p,576p,576i,480p,480i
Aspect Ratio	4:3/16:9/Letterbox/ selectable
Output Port	CVBS and HD Out
6.Audio Decode
Decode Format	MPEG-1,MPEG-2 (Layer I/II),MP3, AC-3(Optional),E-AC-3(Optional),AAC-LC,HE-AAC 5.1
Audio output	RCAX2(L/R) + HD Out (Audio)
7.AV Output
Video Bandwidth	5.5MHz(-3dB)
Video Impedance	75Ω
Video Voltage Level	1.0 Vp-p
Audio Freq. Range	20~20KHz
Guard internal	1/4,19/128,1/8,19/256,1/16,1/32,1/128
Pilot pattern	PP1-PP7
Power Supply	DC(10V-26V)
Hardware interface	DC input 12V, 2 Antenna input, USB, HD out, AUX AV in, CVBS AV out, IR sensor, Power Indicator
Audio format	ISO/IEC14496-30,AAC,AAC+
FFT	1K,2K,4K,8K,16K,32K
Power	2 W
Video resolution	576i,576p,720p,1080i and 1080p
Audio Impedance	600Ω
Audio Voltage Level	2V rms(5.6Vp-p)

Accessory

1 X COFDM-221R receiver

2 X 25DB car amplifier digital Antenna

1 X power / ir / av cable

1 X Remote Control Unit

1 X Extended IR Cable

1 X Audio Video output cable

1 X Users’ manual

 

 

COFDM-221R HD Wireless Video Receiver – Advanced COFDM AV 1080P Transmission System

The COFDM-221R HD Wireless Video Receiver is a professional-grade wireless video receiving system designed for stable, high-quality image transmission in demanding environments. Leveraging advanced COFDM modulation and DVB-T/T2 compatibility, this receiver ensures reliable video reception in both line-of-sight (LOS) and non-line-of-sight (NLOS) conditions, making it particularly suitable for mobile applications, vehicle-mounted systems, UAV/air-to-ground communication, and other mission-critical scenarios where uninterrupted video and audio quality is essential.

With support for full HD 1080P video decoding, multiple input and output interfaces, multi-language operation, and powerful error-correction technology, the COFDM-221R provides unmatched versatility for professional users in security, broadcasting, transportation, and surveillance industries.

---

Key Features

1. DVB-T/DVB-T2 Support with High-Speed Capability

   • Built-in DVB-T and DVB-T2 support ensures compatibility with both standard and next-generation digital broadcasting.

   • High-speed reception capability allows reliable video transmission even in dynamic or fast-moving applications, such as UAVs, cars, and buses.

2. COFDM Receiver with Robust Transmission Performance

   • The advanced COFDM (Coded Orthogonal Frequency Division Multiplexing) technology allows stable video transmission between compact transmitters and receivers.

   • Designed to handle multipath interference, urban obstacles, and other real-world challenges with superior error correction.

3. High-Definition Video Decoding

   • Supports H.264/AVC, MPEG-2, MPEG-4 video formats, delivering crisp HD video playback.

   • Ensures compatibility with modern video encoding standards, enabling efficient bandwidth use without compromising quality.

4. Flexible Multimedia Playback and Recording

   • Integrated USB recorder and PVR (Personal Video Recorder) function.

   • Supports HDD playback and time-shifting functions, providing flexible recording and monitoring solutions.

   • Compatible with common multimedia formats (MP3, WMA, JPEG, BMP, PNG, FLV, RMVB, etc.).

5. Firmware Upgrade and Expandability

   • User-friendly USB firmware upgrade capability ensures the receiver remains up-to-date with the latest improvements.

   • Extended IR sensor input for remote operation.

6. Auto Search and Real-Time Information Updates

   • Automatically searches for available channels and updates bit rate information in real-time.

   • Provides seamless operation with minimal user intervention.

7. Compact and Lightweight Professional Design

   • Portable and lightweight build optimized for professional mobile or fixed installations.

   • Memory function allows automatic restoration of the last channel after power-off.

8. Reliable HD Video Transmission in Complex Environments

   • Capable of transmitting real-time HD images in high-speed mobile conditions or under NLOS (non-line-of-sight) scenarios.

   • Engineered for environments with interference, multipath reflections, and obstacles.

9. Multi-Language Support

   • User-friendly OSD (On-Screen Display) menu supports multiple languages including English, Russian, Thai, Spanish, and more.

10. Flexible Bandwidth and Frequency Options

    • Operates across 6MHz, 7MHz, and 8MHz bandwidths.

    • Supports output frequency adjustment from 46–860MHz, adjustable in 0.5MHz steps.

11. Multiple Video and Audio Outputs

    • 1x HDMI HD output for modern digital displays.

    • 2x CVBS outputs for legacy analog video systems.

    • Stereo Audio-L and Audio-R RCA outputs for clear audio reproduction.

12. Convenient Power and Installation Options

    • Wide DC power supply range: 10V–32V, specially designed for vehicles such as cars, buses, and field-deployed mobile systems.

    • Includes DC jack and cigarette lighter adapter for quick installation.

13. Professional Diversity Receiver with Amplified Antenna Support

    • Dual-antenna diversity reception improves stability and reduces signal dropouts.

    • Compatible with powerful active amplified antennas for extended reception range.

---

Technical Specifications

General

• Model Number: COFDM-221R

• Modulation: COFDM (QPSK, 16QAM, 64QAM, 256QAM)

• Output Frequency: 46–860 MHz, adjustable in 0.5 MHz steps

• Video Compression: H.264, MPEG-2, MPEG-4

• Receive Sensitivity: -80 dBm

• Encryption: AES-128 bit secure transmission

Video & Audio

• Video Output: HDMI + CVBS

• Video Resolution: 576i, 576p, 720p, 1080i, 1080p

• Video System: Automatic PAL/NTSC

• Aspect Ratio: 4:3 / 16:9 selectable

• Audio Output: Stereo (RCA L/R + HDMI)

• Audio Formats: MPEG-1, MPEG-2 (Layer I/II), MP3, AAC-LC, HE-AAC 5.1, optional AC-3/E-AC-3

Tuner

• Input Frequency: VHF: 174–230 MHz, UHF: 470–862 MHz

• Input Level: -20 ~ -83 dBm

• RF Bandwidth: 6 / 7 / 8 MHz

• Guard Interval Options: 1/4, 1/8, 1/16, 1/32, 1/128, etc.

• FFT Modes: 1K, 2K, 4K, 8K, 16K, 32K

Multimedia Functions

• USB 2.0 Support: External HDD, USB Flash playback

• Playback Formats: MP3, WMA, JPEG, BMP, PNG, FLV, DIVX, RMVB (optional)

• Time-Shift Recording: Supported via USB HDD

Memory & Processing

• Flash Memory: 32 MB Serial Flash

• DDR2 Memory: 512 MB

Interfaces

• Inputs/Outputs:

  • 2x Antenna input

  • HDMI output

  • CVBS output

  • RCA stereo audio output

  • DC input (10–32V)

  • USB 2.0 Host port

  • IR sensor port

Power & Consumption

• Power Supply: DC 10–32V (vehicle compatible)

• Power Consumption: Approx. 2W

---

Included Accessories

• 1 x COFDM-221R receiver unit

• 2 x 25dB Car Amplifier Digital Antennas

• 1 x Power / IR / AV Cable

• 1 x Remote Control Unit

• 1 x Extended IR Cable

• 1 x Audio/Video Output Cable

• 1 x User Manual

---

Applications

The COFDM-221R HD Wireless Video Receiver is designed for professional wireless video transmission scenarios where stability and clarity are critical.

• UAV and Drone Video Downlink: Provides reliable HD video feedback for drones in both LOS and NLOS conditions.

• Vehicle-Mounted Systems: Specially optimized for cars, buses, and other vehicles with a wide DC input range.

• Broadcasting and News Gathering: Ideal for ENG crews requiring robust wireless video reception.

• Public Safety and Law Enforcement: Used in surveillance, emergency response, and tactical operations.

• Military and Defense Applications: For reconnaissance and mobile command video reception.

• Events and Live Streaming: Reliable wireless video reception in outdoor and crowded environments.

---

Advantages

• Superior Anti-Interference: COFDM modulation resists multipath fading and signal loss.

• Versatility: Works seamlessly with various transmitters, antennas, and video systems.

• High Mobility: Designed for fast-moving platforms like vehicles and UAVs.

• Scalability: Firmware upgrades and multi-format support keep it future-proof.

• Compact & Rugged Design: Suitable for field operations and professional environments.

---

Why Choose the COFDM-221R?

Unlike conventional wireless video receivers, the COFDM-221R is engineered for professional-grade performance under demanding conditions. Whether deployed in urban surveillance, mobile law enforcement, live broadcasting, or UAV ground stations, it offers:

• High-definition real-time video without significant delay.

• Strong signal penetration through buildings and obstacles.

• Secure AES-128 encrypted transmission for sensitive operations.

• User-friendly interface with multi-language support and intuitive menus.

• Reliability in motion, making it an ideal solution for vehicles, drones, and mobile platforms.

With its broad frequency compatibility, strong error correction, and professional-grade build, the COFDM-221R represents a powerful and flexible solution for anyone requiring robust wireless video reception in complex environments.