COFDM Video Receiver HDMI CVBS with Battery & Display Supports HDD & TF Card Recording

COFDM Video Receiver HDMI CVBS with Battery & Display Supports HDD & TF Card Recording

About LinkAV
Founded in 2005, LinkAV has been dedicating to design and manufacture mobile wireless video/data transmission systems including COFDM, IP MESH and 4G-LTE series, with a group of professional engineers to provide tailor-made service (OEM). LinkAV serves a diverse, high demanding customer base from police/ to ordinary citizens, from UAV to UGV/Robots, from oil field to forest, from overseas to mainland China.

LinkAV is a China leading manufacturer (OEM) of innovative wireless communications and information systems. Our advanced data link systems are ideal for critical communications in unmanned systems such as unmanned ground vehicles (UGVs), unmanned aerial vehicles (Drones, UAVs) and unmanned surface vehicles (USVs), and are designed with portability and reliability foremost in mind.

Application Scenarios

■2-Channel

■4-Channel

Introduction

The LKAV-1404 briefcase receiver is a COFDM base station with 4-channel receiving function for team-based video surveillance operations. It decodes and displays 4 separate SD or HD digital video channels simultaneously, allowing its operator to observe activities in 4 different locations. Multiple transmitters operate in different frequency bands simultaneously. It can receive video and audio from 4 transmitters simultaneously and you can switch the video screen. It can be connected to external monitors and wireless modem, to achieve two-way voice intercom communication and integrated monitoring.

Features

■ COFDM modulation and H.264 compression

■ Up to 4 hours battery life

■ 2-way voice intercom

■ 4-channel 1080p FHD video output

■ Local video storage

■ AES256 encryption

■ TCP/IP/UDP internet protocols

■ High receiving sensitivity, stable performance

Specification

Panel Description

■Front View

① HDMI Output Interface x4

② USB Interface x2

③ LAN Interface

④ DB9 Data Interface (Reserved)

⑤ Mice Interface (Reserved)

⑥ DC 12V Power Output

⑦ 15.6” Display

⑧ Data Switch (Reserved)

⑨ Master Power Switch

⑩ Battery Status

⑪ LED Control Panel

⑫ Channel Switch Buttons

⑬ Video Switch Buttons

■Rear View

① Antenna Interface for Voice Intercom/Data (Reserved)

② Antenna Interface for Video Channel-1

③ Antenna Interface for Video Channel-2

④ Antenna Interface for Video Channel-3

⑤ Antenna Interface for Video Channel-4

⑥ External Power Input Interface

Our Advantages

■ Over 15 years experiences in wireless communication solutions.

■ High product quality, competitive price and low MOQ

■ Excellent pre-sale and after-sale technical team.

■ Quick response and fast delivery.

■ OEM supported.

Advantages of COFDM
COFDM modulation has very strong attenuation resistance, COFDM modulation enables the transmission from the end user to a plurality of subcarriers, and the signal can be kept very much longer than the signal kept in a single-carrier system correspondingly, so COFDM has a stronger resistance for impulse noise and fast channel attenuation resistance. COFDM has higher utilization of frequency and allows overlapping orthogonal subcarriers waves as sub-channels, rather than the traditional use of guard bands separating the sub-channels, so it improves the frequency efficiency, and maximizes the use of spectrum resources.

As for high-speed data transmission, COFDM has its self-adaptive modulation mechanism which enables subcarriers to choose different modulation methods like QPSK, QAM, 16QAM or 64QAM according to different channel conditions and background noises. If the conditions are good, then adapt itself to the high-efficiency modulation, if the conditions are bad, then adapt to the anti-interference modulation. So it can reliably adapt to a high-speed data transmission.

It has strong Inter-Symbol Interference (ISI) ability, ISI is the major interference besides noise in digital communications. COFDM by using the cyclic prefix has the strong ability of ISI.

Ease of use in combination with a variety of other methods, COFDM can be used as a modulation method, besides, it can be easily combined with many kinds of multiple access technology, providing access for multiple users at the same time. You can allow multiple users to simultaneously use the COFDM information technology for transmission.

Applications of COFDM Device
COFDM modulation solved the difficult problems of "Non-Line-of-Sight" and "Mobile" wireless broadband transmission when rate is over 2Mbps, so it has been widely applied in mobile communications, video transmission and monitoring systems such as digital audio broadcasting project (DAB), high-definition TV (HDTV) broadcasting, Health Care, Mobile Communication (CDMA + OFDM), wireless LAN (IEEE 802.1la), broadband wireless access (BWA), high-quality videos in real-time monitoring (, broadcasting, safety, maritime defense and other industries).

High-speed Real-time Mobile Wireless Transmission
The system can collect real-time emergency scene video, voice, data, etc. via a public communication network or private communication network system delivered to each commending center. Officers at all levels of command can understand the situation from the computer directly to take effective measures in real-time command. So it is widely applied to natural disasters emergency services. The system can help to save a lot of processing time and reduce the losses caused by disasters

Real-time Maritime Wireless Transmission
Real-time monitoring of maritime wireless transmission are good for coastal defense, maritime, port inspection and other industries. Real time monitoring of maritime surveillance zone can be manipulated through the whole process with live video, voice, data and control. This system can help to make maritime commanding, monitoring with better efficiency.

Live Broadcasting Video Transmission
When broadcast lively the sports games, the clarity of the video can be greatly improved by COFDM transmission.

Public Mobile Communication System
IEEE 802.1la has already been eyeing on 5GHz band and provides high-speed data transmission by OFDM.

As a conclusion, COFDM modulation solved the difficult problems of "Non-line of Sight" and "Mobile" wireless broadband transmission when speed is over 2Mbps, COFDM can capture videos at high speed and transmit high quality real time videos, make users gain exceptional freedom in news collecting, live broadcasting, real-time monitoring applications.

Founded in 2005, LinkAV has been dedicating to design and manufacture mobile wireless video/data transmission systems including COFDM, IP MESH and 4G-LTE series, with a group of professional engineers to provide tailor-made service (OEM). LinkAV serves a diverse, high demanding customer base from police/ to ordinary citizens, from UAV to UGV/Robots, from oil field to forest, from overseas to mainland China.

LinkAV is a China leading manufacturer (OEM) of innovative wireless communications and information systems. Our advanced data link systems are ideal for critical communications in unmanned systems such as unmanned ground vehicles (UGVs), unmanned aerial vehicles (Drones, UAVs) and unmanned surface vehicles (USVs), and are designed with portability and reliability foremost in mind.

As a leader in real-time microwave transmission, LinkAV is the member of Shenzhen Software Industry Association, the Executive Director of Shenzhen Security & Protection Industry Association. The company’s reputation for both industry-leading products and premier customer service have established LinkAV as one of the market leaders and prime candidate. We are proud to be recognized as the wireless transmission experts, providing real-time high quality video and data solutions.

LinkAV solutions provide customers flexibility without compromising the reliability required for professional broadcast applications or for mission critical systems, enable customers to deliver their digital content quickly and easily anywhere it is needed – whether on a soundstage, a network operation center, or to first responders in the field at a crisis site.

Our Business Principle

Integrity-based, customer first!

Our Core Advantage

Tailor-made service. (OEM/ODM)

Our Mission

Make reliable mobile wireless transmission equipments to help people face disaster and unexpected events more calmly.

Our Vision

To become one of the world’s top THREE mobile wireless transmission equipment providers.

Our Core Values

nMaking it Happen

nHaving High Standards

Export Control Statement (出口管制申明)

In accordance with the requirements outlined in the "Announcement No. 31 of 2024 on Optimizing and Adjusting Export Control Measures for Drones" issued by the People's Republic of China, all products of our company are strictly for civil use. All customers purchasing our products must ensure they are not used for military purposes and must not violate national laws or relevant prohibitions. Radio communication equipment specifically designed for certain unmanned aerial vehicles (UAVs) or unmanned airships with a transmission range exceeding 50km beyond the visual line of sight (LOS) or multi-drone control capabilities requires a license for provision. Any violations are the responsibility of the user. Thank you for your cooperation. This statement is hereby issued!

根据中华人民共和国颁布的《2024年第31号关于优化调整无人机出口管制措施的公告》中的相关要求，本公司所有产品仅为民事用途。所有客户购买产品均需确保不作军事用途，并不得违反国家法律和相关禁令。专门用于特定无人驾驶航空飞行器或无人驾驶飞艇的传输距离大于视距50千米或一站控多机能力的无线电通讯设备，需要许可，才可以提供。如有违反，责任自负，感谢配合，特此申明!