FOURTH SERIES MEDIUM POWER

TRedess Fourth Series Medium Power is a family of Air-Cooled UHF and VHF Transmitters, Translators/Transposers and Gap-Fillers up to 5 kW (DTT and DAB+), bringing together maximum flexibility, high efficiency based on the use of the latest Ultra-Wide Band Doherty technology (UWBD), compact design, reliability and very smart installation and operation, fully oriented to minimize rack space and total cost of ownership.

TRedess Fourth Series Medium Power covers DVB-T, DVB-T2, ISDB-T, ISDB-Tb, ATSC 1.0 and ATSC 3.0 standards, for both MFN and SFN networks.

The units are very compact and modular, with several built-in options that can be useful for optimizing costs and space usage in multiple scenarios, like the built in GNSS receiver, built-in Satellite receiver with CAM (DVB-S/S2), built in Terrestrial input (DVB-T/T2) for retransmitters and the built-in Remux functionality (for ISDB-T). Fourth Series units include the complete local and remote control plus the Dual drive and 1+1 / N+1 redundant functionalities for increasing the system reliability.

Thanks to the latest Ultra-Wide-Band Doherty technology (booth Symmetric and Asimmetric Doherty) important cost reductions in energy consumption can be achieved without impacting in a truly smart operation and maintenance.

Characteristics

Compact modules: Exciter in 1HU and power ampifier module 600W (750W for ATSC 1.0) in 3HU.

Two types of Wide-Band Doherty Power amplifiers are available:

- Symmetrical Doherty: Transmitter efficiency typical 37% (470 – 790 MHz)

- Asymmetrical Doherty: Transmitter efficiency typical 41% (470 – 700 MHz)

Single Drive / Dual Drive / 1+1 / N+1 configurations.

DVB-T/T2, ISDB-T/Tb and ATSC 1.0/3.0 standards supported. Straightforward change from T to T2 (just with the click of a button on a display menu).

DAB+ standard supported.

2 x ASI or 2 x SMPTE and 2 x TSoIP inputs with full seamless switching.

Built-in Satellite receiver (DVB-S/S2) with CAM

Built-in RF input (DVB-T/T2) for Retransmitter operation.

Built-in GPS/GLONASS receiver.

Built-in Remux functionality for ISDB-T networks

Fourth Series Amplifiers are based on the latest Symmetric and Asymmetric Ultra Wide Band Doherty technology reaching first-class efficiency levels and making use of the same HW amplifier for the entire UHF or VHF frequency range.

Advanced Features

Key advantage of reaching the highest Energy Efficiency levels by using the same.

Power Amplifier module for the entire UHF or VHF frequency range

Power transistor using 50V LDMOS technology, leading to a higher power density.

High system reliability: Dual Drive and 1+1 and N+1 Redundancy configurations.

Power supply redundancy in Power amplifiers.

Outstanding Real-time DAP performance, equalizing the transmitter system, quickly, easily and at any time optimizing Shoulders and MER values

Efficiency vs MER optimization algorithm.

Easy operation based on very user-friendly local and remote interfaces.

Advance Monitoring tool: Monitoring of the equipment internal operation: detail tracking at both service and internal HW level.

Real time display of output Spectrum Graphs, Efficiency, MER and Shoulder values (via LCD, Web server or SNMP).

Hot- swap power supply modules, removable from the front panel.SD card on the exciter front panel, for a fast transmitter cloning and configuration.

SD card on the exciter front panel, for a fast transmitter cloning and configuration.

DTT Transmitter 600W Single-Drive Ultra-Wide Band Doherty in 4HU

DTT Transmitter 1,2kW Single-Drive Ultra-Wide Band Doherty in 7HU

DTT Transmitter 600W (1+1) Ultra-Wide Band Doherty in 8HU

DTT Transmitter 2,4kW Dual-Drive Ultra-Wide Band Doherty in 14HU

Advantages & Benefits

The key factor of TRedess success in the Medium Power range is the top class energy efficiency levels achieved with the TRedess latest Wide Band Asymmetric Doherty amplifiers. Asymmetric technology (typical transmitter efficiency 41%).

Another factor is the easy operation and maintenance (as the Wide Band technology is allowing to perform a change of the RF channel without any need of adjustment or HW modification in the power amplifier).

All this, together with the appropriate rack integration, is allowing TRedess to provide a transmitter up to 5KW transmitters (Air Cooled) in a single rack.

The Assymetric/Symmetric Doherty technology leads to very relevant cost reductions in energy bills as well as optimization in spares, space usage, and maintenance and operation costs.

The system reliability is also high as Dual Drive, 1+1 and N+1 redundancy configurations are available as well as Power supply redundancy.

Systems based on the TRedess Fourth Series are also compact and very modular (hence cost-scalable), due to several optional built-in options: like GNSS receivers, DVB-T/T2 input, DVB-S/S2 input, etc.

Operation is also very simple with a very intuitive Graphic Web Interface.