What is #spectrum?
Spectrum is all around us. It is the entire range of electromagnetic radiation ranging from the longest radio waves through visible light to x-rays and the shortest gamma waves. These waves have different frequencies and wavelengths but all travel at the same speed. Part of the spectrum includes the frequencies used for radiocommunications. The boundaries of the radio spectrum are usually considered to range from 9 kHz (9,000 cycles per second) to 3000 GHz (3,000 thousand million cycles per second)
Why is it #Regulated?
Spectrum has to be planned and managed in order to reduce the risk of interference between users, which can destroy the value of spectrum for communications, for example by interrupting signals or degrading the quality of the signal. Some allocations are determined by international agreements through organisations like the ITU, CEPT or the EU. International conventions also ensure that services such as mobile phones work across borders(Roaming)
#هندسة_الاتصالات
(roaming).
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