Guangdong, China
Business Type:
Number of Employees:
Year of Establishment:
Management System Certification:
Annual Revenue:
9.12 Million USD
OEM/ODM Service

Cofdm Video Receiver, Wireless Video Receiver, 4-CH Video Receiver manufacturer / supplier in China, offering Cofdm 4-CH Portable Video Receiver, 200MW Cofdm Covert Transmitter 60ms Delay 30km Long Transmission Distance, Less Than 60ms Delay 30km Long Distance Cofdm Wireless Mobile Video Covert 500MW Transmitter and so on.

Gold Member Since 2014
Audited Supplier

Cofdm 4-CH Portable Video Receiver

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Min. Order / Reference FOB Price
10 Sets US $13,500/ Piece
Production Capacity: 5000pieces/Year
Transport Package: Carton
Payment Terms: T/T, Western Union, USD cash
Application: Video Transmission, Data Transmission, Image Transmission
Modulation: Qpsk, 16qam, 64qam
Oscillator Circuit: LC or Crystal Oscillator
Size: 600mm×391mm×230mm
Weight: 16.5kg
Color: Black

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Basic Info

Model NO.: MV2025RH7-AJKYZ(4)
Trademark: ALLTECH
Specification: SGS
Origin: Shenzhen, China

Product Description

Functions & Features:
4-CH A/V signal simultaneously receiving
Builtin 4-CH A/V synchronous hard disk video recorder for video recording, video file play and backup
MPEG-2/MP@ML/4:2:0 DVD decoding standard
En/decryption transmission
Channels parameters panel configurable
Full-featured PTZ camera remote control
Wide working voltage range with feed short circuit protect and indication
High definition image and hi-fi stereo output
COFDM demodulation and high receiving sensitivity (single antenna -92dBm, diversity receiving-96dBm )
Video receiving bandwidth adjustable, broadcasting level standard
Conference microphone and MIC audio input
GFSK digital audio modulation
Narrow audio transmitting bandwidth and high channel utilization 
Audio sending time controllable to reduce the power consumption subject to situation
Audio sensitivity adjustable with useless noise shielding 

Cofdm 4-CH Portable Video Receiver

Power Supply
Working voltage VAC220V±20V
Working current A≤5.5A@DC12.5V (if audio transmission is off)
≤11.5A@ DC12.5V (if audio transmission is on)
Video Receiving
Frequency input range170MHz~860MHz
RF bandwidth1.25/2.5MHz or 6/7/8MHz
Rx sensitivity-96dBm~-20dBm@8M/-106dBm~-20dBm@1.25M
Video decoding standardMPEG-2/MPEG-4 compatible
ConstellationQPSK/16QAM @ 1.25/2.5MHz; QPSK/16QAM/64QAM @ 6/7/8MHz
FEC1/3, 2/3@ 1.25/2.5MHz; 1/2, 2/3, 3/4, 5/6, 7/8 @ 6/7/8MHz
GUI1/8, 1/16 @ 1.25/2.5MHz; 1/4, 1/8, 1/16, 1/32 @ 6/7/8MHz
Video output level1~1.2Vp-p@75Ω
Video output formatPAL/NTSC
Video white bar amplitude mV650~720mV
Video synchronous amplitude mV260~275mV
Video amplitude-frequency characteristic  dB0~4.8MHz-0.5~1.5
Rx feed output voltageDC10V~DC12V
Rx feed output current (MAX)300mA@DC12V(MAX)
Audio outputRight channel
Command air baudrate600bps~19200bps
Power output≥32dBm
Keyboard communication protocolPelco-P such multiple protocols with baudrate adjustable
KeypressRubber button, numeric keypad, camera function keys
Audio Transmission
Audio Tx frequency470.5~479.950MHz, factory setting:479.950MHz
Audio Tx power output≥40dBm
Audio Tx modulationGFSK
Frequency interval150KHz
Audio encoding overall bitrate4800bps
Audio sample8KHz  16bit
Audio Tx delay1~60 S
Audio input signal strength (MAX)320mVpp
Hard Disk Recording
Video formatPAL/NTSC
Video encodingH.264
Video resolutionD1, CIF, QCIF
Video frame rateAdjustable, standard: PAL, 25f/s;  NTSC, 30f/s
Video bitstreamD1 (1000~1500kbps), CIF(400~600kbps), QCIF (192~384kbps)
SATA hard drive capacity500G
Video Display
Monitor size10.4 inch
Aspect ratio4: 3
Display area (mm)211.4×158.4
Maximum resolution640×480
Dot pitch0.33mm
Display color16.2  M
Brightness250cd/m 2
Response time5ms
Physical Interfaces
Video output interface75Ω, BNC, 1~1.2Vp-p
Audio output interface600Ω, single track, lotus socket
Rx RF input interface50Ω, N socket
Tx RF output interface50Ω, UHF socket
Audio inputConference microphone 6.35mm, MIC 3.5mm
USB interfaceMountable USB flash disk video recording
RS232 control interfaceDB9 male, standard RS232 level, 9600, 8, N, 1
RS232 data interfaceDB9 male, standard RS232 level, support 1200~115200
Network interfaceRJ45, 10/100M self-adapted
DC power inputAnton bauer mount
AC power input3-core power IEC socket
Working temperature-25°C~55°C
Storage temperature-40°C~70°C
Battery weight1.1kg

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