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Bandwidth: Typical telephone link, NTSC video signal

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A. What is the bandwidth of a typical telephone link? Give two advantages and two disadvantages of using this bandwidth compared to a much wider bandwidth, such as the 50 Hz to 20,000 Hz of a CD recording.

b. Why can't a video signal such as an NTSC analog television signal be transmitted over a two km length of loaded twisted pair cable with a frequency range 300 Hz to 3,400 Hz? What is the bandwidth occupied by an NTSC video signal?

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https://brainmass.com/engineering/electrical-engineering/bandwidth-typical-telephone-link-ntsc-video-signal-348616

Solution Preview

a. A typical telephone bandwidth has a typical bandwidth of 3.1 kHz, from 300 Hz to 3400 Hz. The two advantages of using this smaller bandwidth is:
- It is selective only to voice frequencies and ...

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