Q.Explain what is meant by the 'bandwidth of a transmission medium', and briefly compare the typical bandwidths available on a twisted-pair cable, a coaxial cable and an optical fibre.

Television broadcasting uses the VHF (very high frequency) band, 30–300 MHz.

Different services use different frequency bands. The VHF band (30–300 MHz) and part of the UHF band are allotted to television transmission because these frequencies give line-of-sight, ground-wave-free propagation suitable for the required video bandwidth.

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TV signals use the VHF band, 30–300 MHz.

Television broadcast requires a wide bandwidth to carry video, so it is transmitted at high frequencies in the Very High Frequency (VHF: 30–300 MHz) and Ultra High Frequency bands. Among the options …

FM (frequency modulation) radio broadcasting uses the VHF band 88-108 MHz.

Different communication services are allocated distinct frequency bands: standard AM broadcast uses roughly 530-1710 kHz (medium wave), while FM broadcast - which needs a much wider bandwidth per channel to carry the frequency-modulated signal with good fidelity - is all …

Television broadcasting uses the VHF range, 30–300 MHz.

Television signals are transmitted in the Very High Frequency (VHF) band, which spans 30 MHz to 300 MHz (with UHF used for higher channels). This range allows the wide bandwidth required to carry both the video and audio information of a TV sig …

Mobile (cellular) telephones use UHF radio waves, typically in the 800-950 MHz band.

Different communication services use different, internationally allocated frequency bands so that they do not interfere with one another:

• Commercial FM radio broadcasting: 88-108 MHz
• Television (VHF/UHF bands): tens to a few hundred MHz …