The TLWH7900 series of high-power, liquid-cooled UHF transmitters feature energy efficiency and advanced technology. Its wideband Doherty solution eliminates the need for adjustments when changing channels, making these transmitters ideal for HDTV, DTV and mobile TV networks.
Output power (before filter) DVB-T/H/T2, ISDB-T/TB up to 11.5 kWrms, ATSC up to 14.2 kWrms
The new TLWH7900 series of high-efficiency, wideband transmitters represents a technological breakthrough in liquid-cooled, high-power UHF transmitters. Thanks to the now wideband Doherty solution, it is no longer necessary to make modifications or adjustments to the amplifiers when changing channels.
These transmitters are the optimal solution for implementing or expanding a digital broadcast network with HDTV, DTV and mobile TV channels globally. With energy efficiency of up to 42%, they offer immediate benefits in reducing operating costs.
They are equipped with the latest technology in signal processing and power amplifiers based on 50-volt LDMOS transistors, characterized by their high power density. In addition, their compact and modular design, together with their high energy efficiency, facilitates both installation and maintenance, significantly reducing operating costs throughout their useful life for broadcast operators.
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 that dissipates heat efficiently and quietly
- Digital modulations: (DVB-T/-H/-T2, ISDB-T/-TB, ATSC)
- 4K UHDTV transmission via DVB-T2
- Frequencies: from 470 MHz to 800 MHz
- High redundancy ensures maximum reliability
- Digital Adaptive Precorrection
- N+1 redundancy ready
- Multiple remote monitoring options: Telecontacts, SNMP / Web Server (opt.)
- Multiple options for local operation: through the display of the exciter, a Control Unit or Web Server (opt.)
- Series
- TLWH7900
- Frequency Range
- UHF: 470 - 800 MHz (resolution: 1 Hz)
- Power supply
- Three - phase: 400VAC +/- 15%, 47 to 63Hz
- 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
- RF output connector
- 1.5 kWrms, 3 kWrms, 4.4 kWrms: EIA 1 5/8″; 5.8 kWrms, 7.3 kWrms, 11.5 kWrms: EIA 3 1/8"; 14.2 kWrms: EIA 3 1/8" - 4 1/2″
- Channel bandwidth
- 6, 7, 8 MHz plus 1.7, 5 and 10 MHz for DVB-T2 | ISDB-T/TB , ATSC: 6 MHz
- Cooling
- Liquid - cooled