High power UHF TV Transmitters

Wideband High Efficiency Technology, Liquid cooling system.

Discover WHET Series

The new High Efficiency-Wideband TLWH7900 Series represents a step ahead in the technology of high power UHF liquid cooled transmitters. For the first time the Doherty technology becomes Wideband, meaning that it is applicable to the whole UHF band.Therefore, no modifications in the amplifiers are required when the operator needs to change the RF channel.

TLWH7900 Series provides the optimal solution to operators that want to deploy or extend a digital broadcast network with HDTV, DTV and mobile TV channels globally. They offer an outstanding efficiency up to 42%, enabling a high economic benefit to broadcasters.

They are equipped with the most advanced technology in signal processing and the power amplifiers are based on LDMOS transistors – 50 volt. characterized by a high power density.

They feature a power-to-size and performance-to-reliability ratios that allow the signal broadcasting with the highest quality. Its compact and modular design as well as its high energy efficiency facilitate the installation and maintenance, thus significantly reducing the total expenditures over the life of the transmitter for the broadcast operator.

Key features
  • High energy efficiency over the whole UHF band to minimize consumption and OPEX. Values up to 38% for COFDM waveforms and 42% for ATSC.
  • Power amplifiers based on LDMOS-50 volt. technology with high power density.
  • Frequency change through exciter display, NO ADJUSTMENT in the amplifier need be made.
  • Compact design for easy installation in confined spaces.
  • Liquid cooling system to dissipate heat efficiently and noiseless.
  • Digital modulations: (DVB-T/-H/-T2, ISDB-T/-TB, ATSC).
  • 4K UHDTV transmission via DVB-T2.
  • Frequencies: from 470 MHz to 800 MHz.
  • Digital Adaptive Precorrection.
  • High redundancy to ensure maximum reliability.
  • N+1 redundancy ready.
  • Multiple options for local operation: through the display of the exciter, a Control Unit or Web Server (opt.).
  • Wide range of possibilities for remote monitoring: dry contacts and SNMP / Web Server (opt.).
Technical Data
Model TLWH7901 TLWH7902 TLWH7903 TLWH7904 TLWH7905 TLWH7908 TLWH7910
Output power (before filter): DVB-T/H/T2, ISDB-T/TB 1.2 kWrms 2.3 kWrms 3.6 kWrms 4.7 kWrms 5.8 kWrms 9.3 kWrms 11.5 kWrms
Output power (before filter): ATSC 1.5 kWrms 3 kWrms 4.4 kWrms 5.8 kWrms 7.3 kWrms 11.5 kWrms 14.2 kWrms
Number of amplifier: 1 2 3 4 5 8 10
Number of racks 1 1 1 1 1 1 1
RF output connector EIA 3 1/8″ EIA 3 1/8″ EIA 3 1/8″ EIA 3 1/8″ EIA 3 1/8″ EIA 3 1/8″ EIA 3 1/8″ – EIA 4 1/2″