radio magnetic waves that are received in the air
To access the internet via broadband cable, you will need a cable modem. Bandwidth is used for transmitting the signals of the internet to and from your home, and the cable modem is in place to allow the signals to be sent and received.
A copper cable transports electrical signals. An optical cable transports light signals.
A signal is sent through the cable at a much higher frequency than regular cable. Additional data is sent in this signal to support the original audio and video signals to ensure that they are received in much better quality than analog signals. This additional data and the type of signal sent is what allows the quality to be so much better than older analog signals.
Analog signals can be received using an analog receiver.
Cable Television
which term means to issue signals along a network medium such as a cable
Crosstalk
A crossover cable reverses the signals at ends of the cable.
Data travels through a fiber optic cable using light signals. These signals are sent through the cable as pulses of light, which represent the data being transmitted. The light signals bounce off the walls of the cable, allowing the data to travel quickly and efficiently over long distances.
In the USA, now days it is. Before there were antennas to get TV signals from the air, and you could only get ABC, CBS, NBC, and PBS. Then came cable, wire and dish cable. Now there is only cable; dish and cable linkage. There is virtually no more antenna TV signals, and there are thousands of channels.
100km
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