Question

Give the frequency ranges of the following:
A. High frequency band(HF)
B. Very - high frequency band(VHF)
C. Ultra-high frequency band(UHF)
D. Super-high frequency band(SHF)

Answer 1

A frequency can be defined as the number of complete oscillations per unit time. It is denoted by and it is measured in Hertz (Hz). It relates as - f=$\dfrac{1}{T}$, where T is the time period. A frequency band can be defined as the signals that occur between two frequencies. As a result, the frequency band can be all the signals between few micro Hertz to few GigaHertz.$f$

Complete step by step answer: High frequency band (HF) – High frequency reserves the range of the radio frequency of the electromagnetic waves which ranges between $3Hz - 30MHz$. Since, its wavelength ranges from ones to tens of decametres, It is also known as the decametre band.

Very - high frequency band (VHF) – Very high frequency bands include the wavelength between $1\,{\text{and 100}}$ metres and the frequency of the electro-magnetic waves ranges from $300 - 30MHz.$ They are widely used in the transmission of radio and television signals.

Ultra-high frequency band (UHF) – Ultra- high frequency bands include the wavelength between $0.1\,{\text{and 1}}$ metres and the frequency of the electro-magnetic wave ranges from $3000 - 300MHz.$ They are extensively used in the broadcasting television signals.

Super-high frequency band (SHF)- Super- high frequency reserves the range of the radio frequency of the electromagnetic waves which ranges between $3Hz - 30GHz$(GigaHertz). Since, its wavelength ranges from ones to tens of centimetres, It is also known as the centimetre band.

Note:
A frequency bands are the ranges of radio wave frequencies which are used to transmit the data in the wireless spectrum and which in addition can be broken down in the Wi-Fi (Wireless fidelity) channels. With the higher frequency, the data transmission is faster with the shorter signal range.