DVB-T UHF Terrestrial Transmitter For Digital Terrestrial Television

Low Power DVB-T UHF Terrestrial DTV Transmitter

GT-5900 Series

Product Overview

Gospell’s GT-5900-300 series is an indoor UHF Digital Terrestrial Television (DTT) transmitter/gap filler with up to 300W of output power, and is designed for small-scale or blind area coverage application in DTT broadcasting.

GT-5900-300 series utilizes the state-of-the-art LDMOS devices and compact 4U rack-mount structure that enables DTT operators to have reduced energy cost and with much less occupied space of equipment in their DTT network. This series supports various DTT modulation standards, such as DVB-T/H, DVB-T2, DTMB, ATSC, ISDB-T/Tb, and also can operate in SFN mode enabling less spectrum resource is used.

The GT-5900-300 series incorporates multiple self-protected mechanisms, including high VSWR, over-temperature, over drive, over current, over voltage and under voltage. It supports Web based management and maintenance for remote status monitoring and controls, this can significantly reduce management time and operating expense (OPEX). By incorporating the latest technologies of RF delay and co-channel interference rejection, this system fulfills the needs for DTT coverage of SD and HD digital television programs. This is especially suitable for small-scale coverage and gap filling with complex terrains.

Main Features:

· 470MHz to 860MHz

· Available output power from 5W to 300W

· Built-in band pass filter(5-200W)

· Supports single channel or broadband transmission

· Built-in non-linear pre-correction module (optional module for 200W and 300W)

· Optional up to 80MHz of transmitting channel bandwidth within the UHF span

· Low power consumption with high efficient LDMOS amplifiers to reduce electricity costs for operators

· Multi-standard capability, supports multiple DTT standards: DVB-T/H, DVB-T2, ATSC, DTMB and ISDB-T/Tb

· Low power consumption and minimized non-linear distortion

· Extreme low group delay for DTV signal transmission

· Front panel LED indicators, supporting status/alarm indications

· 10/100Base-T network management interface, supporting Web -based management and maintenance

· Built-in LCD touch screen, supporting status monitoring, parameter configurations and malfunction alarms, such as transmitting power, VSWR, working voltage/current, fan speed, IP address and so on

· Multiple protection mechanisms: overdriving, over-temperature, over-current and high VSWR

· Large and dynamic Auto Gain Control (AGC) circuit ensures stability of output power

· Shorten MTTR, built-in modular function unit, supporting fast replacement of faulty component

· Adopts two long-life cooling fans for superior cooling performance and improved stability

Block Diagram:

Technical Specifications

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     Gospell Digital Technology Co., Ltd. (Stock Code: 002848) is a high-tech enterprise in the field of electronic information. It is recognized as a "benchmark enterprise in the electronic information industry" and a "key high-tech enterprise of the National Torch Plan" in China. It is a leading enterprise and backbone enterprise in the broadcast television transmission and satellite transmission service industries. Additionally, it is a leading enterprise in the electronic information manufacturing industry in Hunan Province and is internationally renowned as a brand enterprise. It is also recognized as a nationwide contract-abiding and trustworthy unit and a Chinese quality and integrity enterprise. The company was established in 1993 and founded Chenzhou Gospell Digital Technology Co., Ltd. in 2001. On February 13, 2017, it was listed on the Shenzhen Stock Exchange. In 2020, Weifang Bincheng Investment Development Co., Ltd. became the controlling shareholder of the company, with the Weifang State-owned Assets Supervision and Administration Commission becoming the actual controller of the company. The company is headquartered in Gospell Industrial Park, Suxian District, Chenzhou City, Hunan Province. It has eight wholly-owned subsidiaries: Chengdu Tongcy Digital System Co., Ltd., Chenzhou Gospell Digital Technology Co., Ltd., Chenzhou Gongtian Electronic Ceramic Technology Co., Ltd., Chenzhou Gospell Precision Manufacturing Co., Ltd., Gospell Digital Technology (Shandong) Co., Ltd., Gospell Digital Technology Hong Kong Co., Ltd., Gospell Digital Technology India Subsidiary, and Shenzhen Qianhai Xutian Communication Co., Ltd. It operates one production base, consisting of five major workshops: SMT workshop, DIP workshop, assembly workshop, injection molding factory, and hardware factory, with a total of 45 production lines.

    As a national high-tech enterprise, Gospell boasts a sophisticated technology R&D matrix and has mastered more than 20 core technologies in the audio and video field. Several technological innovations have been recognized as "national key new products" and "provincial-level scientific and technological achievements," and have received the "Hunan Province Science and Technology Progress Award." As of December 2023, the company has undertaken eight provincial-level and higher scientific and technological achievement transformation projects. It holds over 65 intellectual property patents, including 52 invention patents, 9 utility model patents, and 4 design patents. Additionally, Gospell has secured 117 computer software copyrights.

   We commenced our overseas operations early, embarking on digital television system construction in international markets as early as 2004. To date, we have constructed over 200 ground and cable digital television systems, exclusively supplying core equipment, in more than 60 countries across Asia, Africa, Latin America, and Europe.