The radio traffic ( English Radiocommunication ) is "a telecommunication traffic with the help of radio waves ", whereby under radio waves the frequency range up to 3 THz is to be understood. The definition enables the signals to be transmitted not only via the usual medium of air, but also via wire ( wire radio ). Worldwide, the range of 9 kHz to 275 GHz by the ITU Radio Regulations of the International Telecommunication Union regulated (ITU) and radio services assigned.
The terms radio waves and sparks go back to the fact that so-called pop - spark transmitters were used in the first attempts at transmission in radio telegraphy , and from 1908 mainly the extinguishing spark transmitters derived from them .
Numerous abbreviations and codes are used in international radio communications .
Public radio communications
Public radio traffic is the traffic of a radio station that is available to the general public without restriction for the exchange of messages within the framework of the conditions of use, for example mobile radio .
The traffic of a radio station, the use of which by the general public for the exchange of messages depends on the instructions of the persons entrusted with the supervision of the radio station, is regarded as restricted public radio traffic .
Non-public radio traffic
Non-public radio traffic is traffic from a radio station that is not available to the general public for the exchange of messages. These include, for example:
- Ship operational radio communications that are only permitted for the exchange of messages relating to ship operations.
- Official radio traffic that is only permitted for the exchange of business messages between radio stations of authorities.
- Military radio communications that are only permitted for the exchange of messages relating to the armed forces.
- Handbook for the service at marine radio stations , 1st edition, May 1981, p. 15.
- Wolf Siebel: Abbreviations and codes in radio traffic , Siebel Verlag, Meckenheim 1996, ISBN 3-89632-018-1