July 2003
Intermediate to advanced
576 pages
11h 51m
English
Content preview from Home Network Basis: Transmission Environments and Wired/Wireless Protocols
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Chapter 3. Coaxial Cable
Coaxial cables have been used to construct the cable TV distribution network. At the beginning, a cable TV distribution network was very simple and consisted of coaxial cables connecting an antenna on a hillside to many homes that did not get good reception using their rooftop antennas. To compensate for signal losses caused by branch splitting and cable attenuation, TV signals picked up by the hillside antenna are usually enhanced by a wide-band amplifier, whose bandwidth covers TV channels of interests, raising the signal level by 10 to 25 dB. The off-the-air TV channels of VHF (Very High Frequency) band cover frequencies from 54 to 72 MHz (channels 2, 3, and 4), 76 to 88 MHz (channels 5 and 6), and 174 to 216 MHz ...
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