The bmt is a service provider for private broadcasting in Bavaria and negotiates licensing contracts on behalf of the BLM with its customers for cable and broadcasting capacity among various network operators.
The bmt’s customers are local, regional and national providers who wish to disseminate their radio and television programs in Bavaria and beyond. For our customers we work with broadcasting providers such as Media Broadcast, Kabel Deutschland, Astra and Bayern Digital Radio terrestrial transmission center, transmission lines and playout to the cable networks. The feed-in of Bavaria’s local TV slot on RTL is handled by the bmt.
An overview of private radio and TV programs can be found on the pages of the BLM.
The bmt provides consulting for its customers on technical innovations and optimization opportunities in cooperation with the Bavarian Authority for New Media (BLM). For technical implementation, the bmt coordinates workflows between broadcaster, broadcast service providers and the BLM. Costs for technical transmission equipment for private broadcasters in Bavaria are subsidized by the BLM to ease the economic impact. Funds are earmarked in particular for optimization measures and ongoing expansion of digitalization. The bmt is also tasked with conducting promotional measures.
To improve coverage, the distribution areas of the Bavarian program broadcasters are optimized on an ongoing basis. In the terrestrial area, the bmt works in coordination with the broadcasters, BLM and broadcast network operators on the planning and implementation of site positioning, performance boosting, frequency switches and changes to the antenna schematic. For providers of cable programming, new networks are established and existing networks optimized. For our customers, we are constantly searching for technical innovations to serve as alternatives to the prior technical transmission equipment and services.
Because a variety of shareholders are seeking the new access to terrestrial bandwidths, the expansion of analog and digital broadcasting — and potential disruptions to those signals — are taking on an ever-increasing role. The bmt has reacted to this trend by expanding its “Services in Broadcasting Technology” to include a measurement vehicle.<
The vehicle, which can be deployed in a variety of situations, provides the bmt with the infrastructure and expertise to handle complex measurement tasks in a timely and targeted manner.
Broadcasters, broadcast network operators, German state media authorities and other organizations using wireless signal broadcasting can commission the bmt’s measurement vehicle for a variety of services.
The primary area of investigation are the UKW (FM) and DAB/DAB+ broadcasting services. Beyond the measurement services, which work based on established standards and guidelines, it is also possible to conduct special customized measurements and analyses.
Measurements can be taken from a stationary position or while moving. The 10 meter long telescoping mast, capable of rotating in 360 degrees, is used for stationary measurements.
A second portion of vehicle roof is kept free to allow for other antenna systems to be mounted, meaning mobile measurements can be conducted quickly and efficiently.
All measurements are geo-referenced. Depending on which wireless service is being observed, several automated measurements are conducted per second.
By request, frequency bands outside the broadcasting range, such as mobile radio communications (GSM, LTE,…) and BOS signals (TETRA) up to 3 GHz can be assessed.
The measurement vehicle is a custom Mercedes Benz Vito adapted to the bmt’s specs. It features the following components:
– DVB-T measuring receiver and ETL spectrum analyzer und (Rohde&Schwarz)
– DAB/DAB+ measuring receiver FieldMonitor (RadioScape)
– UKW measuring receiver TS 9085 (MicroGen Electronics)
– Directional broadcasting antenna FT-01 for bands II to IV (Schwarzbeck)
– 4×4 HF matrix (Telemeter)
– Navigation system with GPS receiver and electric compass (Nexus)
– PC workstation with control monitor in driver’s view
The measurement vehicle is designed to operate with one or more measurement engineers/technicians aboard. It also offers flexible expansion options, allowing for various antenna or receivers (such as audio receivers) to be tested.