DTV UHF System Total Solutions

Digital UHF system can easily spread wireless digital television signal and provide plentiful programs for thousands of families, especial for the rural areas. It is an effective way to transmit a large number of high quality TV programs in villages. The frequency range of this system is 2.5~2.7 GHz. The digital modulation can adopt DVB-C, DVB-T and DVB-S. It can offer data broadcast, TV conference, internet, VOD, etc.

GOSPELL offers the entire set of digital head end equipments, CA systems, UHF transmitters, STBs and microwave digital downconverters. We also offer the service of designing, installing, testing, etc. to achieve a Golden Key project.

Features:

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

Good quality picturedigital------ signals are decoded and reverted in receiving equipments, which ensures the high quality. 

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

CA------ CAdigital system can be carried out conveniently. It simplifies the subscribers commission management and charging process.

Self-contained system software------ CAS 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.

Main transmitting center

Composed of digital head end equipments and UHF transmission equipments, the main transmission station of the regions or countries generally contains 2 types of broadband transmission, namely outdoor broadband transmission and indoor broadband transmission, and single channel transmission. A broadband transmitter can transmit simultaneously a few channels of digital TV signals and the coverage is about 50 km in radius; a single channel transmitter can only transmit one channel, while the coverage is over 50 km in radius.

System scheme A (Broad Band Transmitter) 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-5527(D0)     Digital UHF Transmitter(Broadband)
GT-5401-13 UHF Transmitting Antenna
CAS(Server+Software)
SMS(Server+Software)
NMS(Network Management System software)
EPG (SystemServer+Software)

System scheme B (Single Channel Transmitter) 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-5527 N Single Channel    Digital UHF Transmitter

GT-5412  Power combiner BT-26  Waveguide GT-5401-13 UHF Transmitting Antenna

CAS (Server+Software)

SMS(Server+Software)

NMS(Network Management System)

EPG (SystemServer+Software )