Difference between frequency spectrum and bandwidth

Frequency bands Frequency rangeWavelength rangeITU designationFull name30–300 kHz10–1 kmLow frequency300 kHz – 3 MHz1 km – 100 mMedium frequency3–30 MHz100–10 mHigh frequencyRadio frequency – Wikipedia en.wikipedia.org › wiki › Radio_frequency

In technical terms, bandwidth is a range of frequencies within a given band, particularly used for transmitting a signal. Frequency, on the other hand, is the number of cycles or oscillations that occur in a signal per second. Frequency helps to calculate bandwidth .

There is no relation between frequency and range of a signal . For electromagnetic waves the waves with higher frequency have more energy and hence higher penetration power through buildings and walls.30 Nis 2018

As frequency increases, the signal is absorbed more by physical objects (atmospheric moisture, trees, buildings, etc). Hence you need more power to make up for the signal loss. For constant power, the range decreases because the signal losses increase with increasing frequency .