COFDM Wireless Video System

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Shenzhen Keweitai Enterprise Development Co., Ltd

2F, Building C3, Hengfeng Industrial Aera, Baoan District, Shenzhen,518126 P.R.C

0086-755-83867049 83408420 83867601
+86 15012895842, +86 13927495497

Larger photo of COFDM Wireless Video System

COFDM Wireless Video System


company	Shenzhen Keweitai Enterprise Development Co., Ltd
Categories	LED Displays
Update	2011-03-14
Original Region	China
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COFDM Wireless Video System

MV2025 TTLEMV2025R/YJBK

Mini TransmitterMultifunctional Receiver

System Introduction

The COFDM mini transmitter(MV2025 TTLE) is a new concept in remote surveillance, designed specially to meet the special requirements of covert missions. The equipment is highly integrated and can realize wireless video transmission in mobile and NLOS (Non line-of-sight) conditions. With professional clothes and pinhole camera, it can be used in public security bureau or security department to finish covert missions. The transmission range can be up to 30km in LOS (line-of-sight) condition.

Transmitter Features

COFDM modulation, stable transmission

Transmission security by encryption of AES128 bit/ ALLTECH Basic Scrambling

MPEG-2 video compression

High capacity of Lithium battery for power supply

Modular design and highly integrated

Adjustable working frequency

High strength aluminum enclosure, dustproof, waterproof and shockproof

NLOS (Non line-of-sight) transmission.

The transmission range is more than 30Km in LOS (line-of-sight) condition

Good transmission with high definition video and stereo audio

Product Application

By using a pinhole camera, the first responder can get live scenes. Then the mini transmitter transmits real-time video to the receiving center. In the receiving center we use a portable multifunctional suitcase receiver that can record the real-time video by USB interface and control the PTZ in NLOS (non line-of-sight) condition

Transmitter Specification

Frequency	300-400MHz, 400~800MHz（customized）, 1.0~1.6GHz（Customized）, 2.3G~2.5 GHz（customized）
Power output	500mW
Bandwidth	8 MHz、7MHz、6MHz、2.5 MHz、1.25MHz(optional)
Modulation	COFDM
Constellation	QPSK16QAM64QAM (optional)
Carrier	2K
FEC	1/22/33/45/6, 7/8(optional)
Guard interval	1/321/161/81/4(optional)
Video compression	MPEG2 4：2：0 MPEG2, MPEG4 (optional @ 1.25/2.5MHz）
Latency	< 100ms
Motion speed	>280km/h
Li-battery	DC10.8V /1800mAh
Battery charger	12.6V/2A
RF interface	SMA
Ambient humidity	≥95%
Temperature	-40°C~+45°C
Weight	Transmitter：0.27Kg Battery：0.22 Kg
Dimension	Transmitter：109.5mm85mm17mm Battery：113mm* 85mm13.2mm Transmitter and Battery combined: 113mm85mm*30mm

Portable Receiver Specification

Bandwidth	6/7/8 MHz 1.25/2.5MHZ (optional)
RF level	-94dBm~-20dBm @6/7/8MHZ, -105dBm @1.25MHZ
RF impedance	50
Feed voltage	DC 10V~12V
Constellation	QPSK16QAM64QAM (optional)
FEC	1/22/33/45/6, 7/8 (optional)
Carrier	2K
Guard interval	1/321/161/81/4 (optional)
Video decoding	ISO/IEC138182 (MPEG2 video) MP@ML
Decryption	AES 128 bit / ALLTECH Basic scrambling, RS232 serial port for configuration
Monitor size	10.4”
Resolution	720 x576
Aspect ratio	4:3
Audio output	Stereo unbalanced(300/200mV)
A/V output interface	2 Audio outputs

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