18. Broadcasting as a physical act: legislation and regulation.

Broadcasting may be defined as the transmission of a broadcast signal by physical act, and for many legislative purposes it is defined as 'broadcast by wireless telegraphy'1. However, because the radio spectrum in the United Kingdom is a finite (and potentially lucrative) resource for which demand greatly exceeds supply in many frequency bands and in many geographic areas, the applicable legislation deals generally with allocation of the electromagnetic spectrum and its use2, and specifically with wireless telegraphy3, but separate consideration is given also to the authorisation of frequency use for the provision of mobile satellite services4, and to the

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