R&S^®NU002 FM Transmitter System

The modules of the R&S^®NU002 FM Transmitter System system allow versatile configuration of compact and favourably priced transmitter systems from 20 W to 400 W. Manifold applications can be implemented by combining different system components for feeding the modulation signal to the transmitter via relay reception:

Low-power transmitter systems:

For local radio stations,transmitters of 20 W, 100 W, 200 W or 400 W output power are available to meet the local requirements. The stereocoder is already integrated. The operational reliability can be further enhanced by a passive standby configuration to avoid transmitter failure and thus loss of advertising revenue. An additional source of income can be realized by using RDS for instance as a paging service.

Transposer stations

It is the job of public broadcasting corporations to provide virtually the entire population with their programs. Where topography is unfavourable, many gapfiller transmitters in transposer mode are required. The R&S^®NU002 FM Transmitter System system is particularly suitable for this application, too. The RF receiver is already integrated in the modulator. To ensure optimum signal quality, conversion is effected at the multiplex level and not at the IF.

Transmitter stations with RDS

Transposer stations using RDS cover a larger area and in turn bigger audiences. With the Radio Data System (RDS) car drivers can continue listening to their favourite program when they drive into another coverage area; the car radio automatically switches to a new frequency offering good reception. Using RDS as a radiopaging system, eg for local voluntary fire brigades, means another source of income for the broadcaster.

Road tunnels

Coverage is implemented to an increasing extent in long road tunnels too. This is to ensure not only the reception of music and traffic information but also of announcements from the local VHF station in emergency situations. A coaxial leaky feeder allows music and important information to be received in long tunnels. For this purpose the programs which can be received in the area concerned undergo co-channel conversion. The special advantage of the R&S^®NU002 FM Transmitter System system in this case is that it is extremely versatile and can be expanded for instance to feed in a new broadcaster at a later date.

Low-power transmitter systems in weatherproof design

For the coverage of small areas using a low-power transmitter it is often not very economical to provide a transmitter building. For such cases a special weatherproof enclosure is available which can also be installed on masts or roofs. For transmitter powers of 100 W and above a heat exchanger provides for the correct operating temperature. A sunshield protects the system against excessive heating from sunrays.