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Satellites
Published in Mohammad Razani, Information, Communication, and Space Technology, 2017
According to the ITU Radio Regulations, MSS is defined as a radio-communication service that is: Between mobile earth stations and one or more space stations, or between space stations used by this service.Between mobile Earth stations by means of one or more space stations. This service may also include feeder links necessary for its operation.
Everyman’s radio-telephone: how CB radio users mobilized West Germany’s communication culture
Published in History and Technology, 2019
Next to these quite exclusive public mobile communication services, the Bundespost controlled non-public wireless radio networks, most of which were used by state and security services. This so called ‘nöbL’ (‘nicht-öffentlicher beweglicher Landfunkdienst’, i.e. non-public mobile radio communication service), consisted of pager and two-way radio networks operating on different frequency bands. Police radio predominantly utilized the ultrashort wave band, while rescue services operated on the short wave band.33 Moreover, from 1962 onwards, the 27 MHz frequency band was licensed, but only to five entitled parties: (1) security services such as police, fire service, or customs; (2) public authorities and public works; (3) industry and construction companies; (4) trade and business (e.g. film, doctors); and (5) organisations which support sports. As in the early days of American CB radio, the use of 27 MHz was limited to short intervals for ‘necessary’ communication. In total, the number of registered nöbL devices (without security agencies) grew from around 10,000 stations in 1960 to 120,000 in 1970 and over 200,000 in 1973, as the need for mobile communication grew and equipment prices dropped.