Broadband Cable Transmission According to DVB-C

Abstract

Originally only used as community TV antenna networks, in the 1980ies cable TV or broadband cable networks (CATV) has been developed. Many countries are now using broadband cable networks (CATV) in metropolitan areas for broadcast service distribution. In some regions the CATV networks was used only up to 600 MHz for a long time but now they are occupied up to 860 MHz (Fig. 16.1.). There are now even plannings to use that networks also for frequencies above 1 GHz. Additionally to the terrestrial VHF and UHF TV channel definitions there are further “special channels” in CATV networks (“superband”, “hyperband”). Analog TV services can be received by any TV set without any further technical equipment but analog TV channels will disappear also very soon in CATV networks.