COFDM modulation; MPEG-2 video compression; 6/7/8MHz bandwidth optional;   IntroductionThe emergency response system can realize the wireless transmission in NLOS (non line-of-sight) environment. The COFDM modulation and MPEG-2 video compression mode guarantee the stability and quality of the transmission. In addition, at the receiving side we equip a portable receiving suitcase that can record the real-time video by USB interface and control the PTZ in NLOS (non line-of-sight) condition. Since its multifunction and it is easy to be carried and installed everywhere, the system has many mission fields such as: Military, Public Security, Forest Fire Prevention, Firefighting, Oil and Gas Industries, Traffic Police, Disaster Management and Railway etc.Main FeaturesInset video server for network transmissionRF short circuit protection and indicationFrequency adjustable by frequency controllerCOFDM modulation and MPEG-2 video compressionHigh quality video transmission under NLOS(Non line-of-sight) conditionConvenient installation and dismantlement,Lithium battery and commercial power for power supplyProduct Application

The system is an ideal solution in remote surveillance. For the power supply, we set a lithium battery case (12V/100AH) that can support the system to work continuously for at least 6 hours and it can work well by commercial power. Since it is easy to be carried and installed everywhere, the system is widely used in many applications.

  Transmitting End Specification

Frequency	300MHz-399MHz,560MHz-760MHz,
	760MHz-860MHz(customized),1.0-1.4GHz(customized)
	2.3-2.5GHz(customized)Frequency is adjustable continuously
Power Output	1-2W
Modulation	COFDM
Video Compression	MPEG-2
Video Coding	4:2:0
Resolution	720×576
Video Rate	4Mbps—15Mbps
Audio Channel	Stereo /Left and  Right
Encryption	AES 128 bit / ALLTECH Basic scrambling
	RS232 serial port for configuration
Instruction Frequency	433.302MHZ
Instruction  Baud Rate	2400/4800/9600bps
Instruction Sensitivity	-110dBm
Power Supply	12VDC/3A
Battery Capacity	12VDC/60AH (working time is more than 6 hours)
Aluminium Bracket	three extensible sections (maximal length is 1.8 meters)
Camera Resolution	480 (horizontal)
Illumination	0.01LUX
Focus	F1.4-F3.0 f=4.1-73.8mmF1.6-F3.8 f=3.5-91mm
Zooming	optical:18X; digital: 12X
Rotating Range	Horizontal:  0°~ 360°Vertical: -5°~ 92°
Rotating Speed	Horizontal: 0.05°~240°/s; Vertical: 0.03°~160°/s
Preset Locations	100
Dimension	diameter:135mm;  length: 355mm
Weight	5.6kg

Multifunctional Suitcase Receiver

Bandwidth	6/7/8 MHz  (optional)
RF Level	-94dBm~-20dBm
RF Impedance	50Ω
Default Frequency	Customized
DC Output	DC 10.5V+/-0.5V
Constellation	QPSK,16QAM,64QAM  (optional)
FEC	1/2,2/3,3/4,5/6, 7/8 (optional)
Carrier	2K
Decryption	AES 128 bit / ALLTECH Basic scrambling
	RS232 serial port for configuration
Guard Interval	1/32,1/16,1/8,1/4 (optional)
Video Decoding	ISO/IEC13818-2 (MPEG2 video) MP@ML
Aspect Ratio	4:3, 16:9
Resolution	720 x576
Audio Output	Stereo unbalanced (300/200 mV)
AV Output	2 audio+ 1 video
Video Record	H.264
USB Interface	USB 2.0 (Flash memory disk can be connected )
Control Protocol	PELCO-P/D
Control Frequency	433MHz
Control Modulation	GFSK
Power Supply	Lithium battery or 220VAC
Working Current	<2.5A @DC 12.5V
Temperature	-25°C~ +50°C
Dimension	460mm*370mm*180mm
Weight	12.4kg

COFDM wireless video emitter