Sputnik
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| − | Soviet Union. The first artificial satellite, Sputnik 1, was launched on 4 October 1957. The satellite contained two [[Radio|radio]] transmitters designed so that their signals could be received easily by [[Amateur Radio|radio amateurs]]. | + | Soviet Union. The first artificial satellite, Sputnik 1, was launched on 4 October 1957. The satellite contained two [[Radio|radio]] transmitters designed so that their signals could be received easily by [[Amateur Radio|radio amateurs]]. |
| − | [[Category:Communications]] [[Category:Radio_communication]] [[Category:Satellite_communication]] | + | [[Category:Communications]] |
| + | [[Category:Radio_communication]] | ||
| + | [[Category:Satellite_communication]] | ||
Latest revision as of 16:19, 27 February 2012
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Soviet Union. The first artificial satellite, Sputnik 1, was launched on 4 October 1957. The satellite contained two radio transmitters designed so that their signals could be received easily by radio amateurs.
