The Wireless Telegraphy Acts are laws regulating radio communications in the United Kingdom.
Wireless telegraphy as a concept is defined in British law as "the sending of electro-magnetic energy over paths not provided by a material substance."
The term telegraphy, although best known in relation to the electric telegraph, relates to the sending of messages over long-distances. Wireless telegraphy is differentiated from electrical telegraphy in that the messages are transmitted via electromagnetic means (light or radio) rather than via a physical electrical cable connection.
The guardian of the UK's electromagnetic spectrum is the communications regulator, Ofcom.
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