Radio communication service or radiocommunication service is according to Article 1, No. 1.19 of the International Telecommunication Union´s Radio Regulations (ITU RR), defined as "a service…involving ...
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the transmission, emission and/or reception of radio waves for specific telecommunication purposes".
Radiocommunication is sub-divided into space and terrestrial radiocommunication. Space radiocommunication is defined in RR Article 1, No. 1.8 as "any radiocommunication involving the use of one or more space stations or the use of one or more reflecting satellites or other objects in space". Terrestrial radiocommunication is defined as "any radiocommunication other than space radiocommunication or radio astronomy".
