DTV UHF Turn-key Solution

DTV UHF Turn-key Solution

Digital MUDS system head-end are the same to the MMDS system, only transmitter, power combiner, transmitting antenna are different, its frequency range is 470~860MHz, usually above 600 MHz. It adopts DVB-C, DVB-T and DVB-S three modulations, so its convenient to transmit the digital television signal, and provide abundant programs for thousands of families, especially in the rural area. MUDS is an effective way to cover the villages. Except digital television programs, it also can provide many increment operation, such as digital TV, internet, IP telephone, remote medical treatment, remote education, VOD, etc.

GOSPELL offers the entire set of digital head-end equipments, CA, MMDS transmitters, STBs, etc. We also offer the service of designing, installing, testing and so on, and then finish the Golden Key project.

Features

Saving channels------ every 8MHz can transmit 6~12 PAL/NTSC TV programs when 64 QAM is adopted.

Well picture quality ------digital signals are decoded and reverted in receiving equipments, which ensure the high quality.

Far transmission distance ------digital transmission has a relatively low condition demands, the direct transmission distance is far, but also capable to carry out the digital signals recycling and repeating so long distance transmission could be operated.

CA------digital system can carry out CA conveniently. It simplified the subscribers commission management and charging process. Self-contained system softwareCAS software, SMS software, NMS software, EPG software .

Numerous increment operation------it can provide many increment operation, such as digital TV, internet, IP telephone, remote medical treatment, remote education, VOD, etc.

The main transmission center station

Composed by digital head end equipments and MMDS transmission equipments. In general, it is the main transmission station of the regions and countries. MMDS transmission contains 2 styles of broadband transmission and single channel transmission. There are outdoor and indoor models for broadband transmission. A broadband transmitter can transmit many channels of digital TV signals simultaneously and the coverage is  less than 10km in radius; a single channel transmitter can only transmit one channel, while the coverage is less than 20km in radius, big power consumption transmitter combined by wide band , and the coverage is over 30km in radius

System compositions A (broadband)  main facilities 

GC-1800S GC-1802S GC-1800SCI       digital QPSK converter 

GN-1821 GN-1824    GN-1834       MPEG-2 encoder

GV-4100EDA         interface adaptor

GM-2700 GM-2704    re-multiplexer

GA-2610 GA-2620        scrambler

GQ-3650 QAM     modulator(DVB-C)

GQ-3710 QPSK     modulator(DVB-S)

GQ-3730 COFDM     modulator(DVB-T)

GT-5900(D type)       digital MUDS broad band transmitter 

GT-5405-8       MUDS transmitting antenna

CAS (server + software)

SMS(server + software)

NMS(server + software)

EPG(server + software)

System scheme B(single band transmitter)Explanationif the power is small, the single band power combiner is adopted; otherwise the broad band power combiner is adopted.

main facilities

GC-1800S GC-1802S GC-1800SCI    digital QPSK converter

GN-1821 GN-1824          MPEG-2 encoder

GV-4100EDA        interface adaptor

GM-2700      re-multiplexer

GA-2600       scrambler

GQ-3650      QAM modulator(DVB-C)

GQ-3710       QPSK modulator(DVB-S)

GQ-3730               COFDM modulator(DVB-T)

GT-5900(D1 type)       digital MUDS single band transmitter

GT-5415        power combiner

SYV      waveguide

GT-5405-8      MUDS transmitting antenna

CAS(server + software)

SMS(server + software)

NMS(server + software)

EPG(server + software)