Bandwidth is the difference between highest frequency and lowest frequency. Suppose a signal is having maximum frequency of 100 Hz and lowest frequency 50Hz, then bandwidth is said to be 50 Hz. range- range implies complete span of frequency presents in a signal.
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In telecommunication, a band – sometimes called a frequency band – is a specific range of frequencies in the radio frequency (RF) spectrum, which is divided among ranges from very low frequencies (vlf) to extremely high frequencies (ehf). Each band has a defined upper and lower frequency limit.
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