Data on coverage
During the period of introduction of terrestrial digital television broadcasting, CTU prepared an overview of more detailed information on the development of terrestrial digital television coverage. This information was extended to include digital radio broadcasting and is being updated depending on more fundamental changes to the structure of digital networks. The aim of this project is to provide comprehensive information about the possibilities of receiving terrestrial digital TV and radio broadcasting in various locations in the Czech Republic for general viewing public.
Calculations made by the procedures laid down by Decree no. 163/2008 Coll., on the coverage of terrestrial television broadcasting signal and according to the Recommendation ITU-R P.1546-2 are the basis of above mentioned information on the terrestrial digital television broadcasting.
Calculations made by the procedures laid down by Decree no. 22/2011 Coll., on the method of determining the coverage of terrestrial radio broadcasting signal in selected frequency bands, using the same transmission model are the basis of the information on the coverage of terrestrial digital radio broadcasting. Beyond the calculations according to these decrees, a depiction of the coverage obtained by the ITU-R P.1812-3 calculation method is added. It it a diffractive calculation model that takes more account of terrain irregularities.
Because of a statistical calculation method using a terrain model without considering the buildings and other obstacles on ground surface, it is possible that the real coverage TV signal will be different in some areas and locations (especially in the peripheral areas covered of individual transmitters or in urban communities). Calculations of coverage are also related to the case where the receiving antenna is used with appropriate technical parameters and placed at a height of 10 m above the terrain or on building roofs in case of buildup area.