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China, Chinese 100km Cofdm Wireless Mobile Video Transmission Portable Repeater1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
TransmitterOther TransmittersCofdmtransmitterWireless Transmitter
Shenzhen Keweitai Enterprise Co., Ltd.
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Product Description Introduction:The portable repeater is developed with the latest technologies of COFDM modulation and MPEG-2 video compression. This equipment can realize wireless transmission with high definition video and stereo audio. Especially, in the urban and mountainous environments, the portable repeater is the ideal solution for the NLOS (non line-of-sight) transmission. Since its powerful function and it is easy to be carried and installed everywhere, the repeater has many application fields such as: Broadcasting, Public Security, Forest Fire Prevention, Firefighting, Oil and Gas Industries, Traffic department, Disaster Management, Railway. Main Features:Inset high-performace amplifierLithium battery for power supplyConvenient to be carried and installedCOFDM modulation and MPEG-2 video compressionGreat security by encryption of AES 128 bit/ALLTECH Basic ScramblingGood transmission with high definition image and stereo audioAdjustable working frequency, LCD board displays the working frequencyFirm aluminium enclosure with built-in cooling fans, waterproof and shockproofStable transmission in NLOS(non line-of-sight)and high speed mobile condition.Transmission range can be up to 100km in LOS(line-of-sight)environmentProduct Application:For the wireless transmission system, if there are high buildings and mountains between the first responder and the receiving center, the transmission quality is easy to be disturbed. We can use the portable repeater to relay the camera's output signals from the first responder to the commanding center.Repeater Specification: Rx Frequency 170MHz~860MHzRx Bandwidth6/7/8MHz, 2.5/1.25MHz(optional)Rx Setting Frequency170MHz~860MHzRx Sensitivity≤-105dBm @ 1.25MHz; ≤-94dBm @ 8MHzRx Default Frequency300MHz~450MHzRx Voltage OutputDC12.5V±0.5VRx Current Output 400mA(MAX)Tx Frequency550MHz~810MHzTx Bandwidth6/7/8MHz,2.5/1.25MHz(optional)Tx Setting range560MHz~760MHzTx Default frequencycustom-madeTx Power Output 27.5dBm~29.5dBmTx Flatness≤1dB @ 8MHzTx CNR ≥28dB @ 27.5dBm power outputSecond Harmonic≤-43dBEncryption: AES 128 bit / ALLTECH Basic scrambling RS232 serial port for configurationBattery14.8VDC/32AH(6 hours continuous working time )DC InputDC12.5V~DC16.8VWorking Current≤3.5A@DC12.5VDimension360mm*268mm*127mmWeight9.5 kg (including the battery)Rack Mount Receiver Series:MV2025RJ7-A Rack Mount Video Receiver with Duplex-audio Functions & Features:Working frequency directly display on panelPower off memory Data transmissionReceiver controlled by PC or display panelConference microphone input and MIC audio inputGFSK digital audio transmission modulationNarrow audio transmission bandwidth and good channel utilization Digital audio decoding, good voice quality and internal en/decryptionAudio frequency adjustable with 64 channelsAudio sent time controllable to reduce power consumption subject to situationAudio sensitivity adjustable with useless noise shieldingA/V signal simultaneously outputOne-channel video output with BNC connector and two-channel audio outputABS decryption on received A/V signal Specifications:Power SupplyWorking voltage VAC220V±20VWorking current A≤1.5A@DC12.5V (if audio transmission is off) ≤7A@DC12.5V (if audio transmission is on)Video Receiving Frequency receiving range170~860MHz or user customized Frequency bandwidth6/7/8MHz or 1.25/2.5MHz adjustableReceiving sensitivity-96dBm~-20dBm@8M/-106dBm~-20dBm@1.25MDemodulation COFDMVideo decoding MPEG-2/MPEG-4 compatibleDecoding AES/ALLTECH Basic Scrambling Constellation QPSK/16QAM @ 1.25/2.5MHzQPSK/16QAM/64QAM @ 6/7/8MHzFEC1/3, 2/3 @ 1.25/2.5MHz1/2, 2/3, 3/4, 5/6, 7/8 @ 6/7/8MHzCarrier 2KGUI1/8, 1/16 @ 1.25/2.5MHz1/4, 1/8, 1/16, 1/32 @ 6/7/8MHzVideo output level1~1.2Vp-p@75ΩVideo output format PAL/NTSCVideo white bar amplitude650~720mVVideo synchronous amplitude260~275mVVideo amplitude-frequency characteristic dB0~4.8MHz-0.5~1.55.5MHz-4.0~1.5Rx feed output voltage DC10V~DC12VRx feed output current 800mA/CH (MAX)Audio outputLeft/right channel, stereo RS232 control interface Standard RS232 level, 9600, 8, N, 1RS232 data interfaceStandard RS232 level, support 1200~115200Audio Transmission Audio Tx frequency470.5~479.950MHz, factory setting: 479.950MHzAudio Tx power output≥40dBmAudio Tx modulation GFSKSHG>62dBcFrequency interval 150KHzAudio decoding overall bitrate4800bpsAudio sample 8KHz 16bitAudio Tx delay1~60 SAudio input signal strength320mVpp (MAX)Environment Working temperature -25°C~55°CStorage temperature -40°C~70°CAapearance Dimension 482mm×280mm×44mm (1U case)Weight 4.8kg
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