Discontinued Product
R&S®NA7000 DAB/T-DMB Transmitter Family
Liquid cooled VHF transmitters
The
- Exciter
- Power amplifiers including power supply
- Transmitter rack
- Harmonics filter
The VHF transmitters provide an output power range from 900 W to 3.6 kW (higher and lower power ratings on request). Each amplifier has its own power supply which is integrated into the amplifier module and therefore also liquid-cooled.
The amplifier modules are self-engaging and can be replaced during operation without losing any liquid from the closed cooling system and without impairing the functioning of the other modules. When an amplifier module is inserted into the rack, it is hooked up to the RF, control and cooling system lines by appropriate connecting elements. As the AC supply voltage is directly fed to the amplifier modules, additional auxiliary power supplies are not required. This enhances the availability of the transmitters.
All transmitters can be equipped with a second exciter (exciter standby) and the associated automatic switchover unit. The VHF transmitters are designed according to the concept of the TV Transmitters R&S® NM/NW7000. This is very favourable in installation and maintenance when DAB/T-DMB and TV transmitters of this type are simultaneously operated at one location.
