what it is?
The cable network mimics the over-the-air radio frequency broadcast signals that you would receive via a TV antennae, but they are carried on cable. Television signals are transmitted in 6-MHz channels.
CATV is a shared cable system that uses a tree-and-branch topology in which multiple households within a neighborhood share the same cable.
how it work?
The digital high gain TV aerial, receiving digital TV signals.Signals received by the aerial are then processed. In systems that have not been modified to carry digital, it is usually this processing that restricts or prevents the digital signals from being handled correctly, as the processors are only designed to handle analog TV signals.
A distribution network then delivers all television signals to a socket outlet in each household. There can be more than one outlet per household, but only one TV set can be connected to each outlet.
How the distribution network is configured will depend on the number of dwellings and floors in the building.