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About: AMSAT-OSCAR 7     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:WikicatAmateurRadioSatellites, within Data Space : dbpedia.demo.openlinksw.com associated with source document(s)

Type: Thingschema:Eventdul:Eventsocietal eventwikidata:Q1656682wikidata:Q2133344yago:WikicatArtificialSatellitesOrbitingEarthyago:Artifact100021939yago:Equipment103294048yago:Instrumentality103575240yago:Object100002684yago:PhysicalEntity100001930eventmilitary conflictspace missionyago:Satellite104137444yago:Whole100003553yago:WikicatAmateurRadioSatellites New Facet based on Instances of this Class

AMSAT-OSCAR 7, or AO-7, is the second Phase 2 amateur radio satellite constructed by the Radio Amateur Satellite Corporation or AMSAT. It was launched into Low Earth Orbit on November 15, 1974 and remained operational until a battery failure in 1981. Then after 21 years of apparent silence, the satellite was heard again on June 21, 2002 – 27 years after launch. At that time the public learned that the satellite had remained intermittently functional and was used surreptitiously for communication by the anticommunist opposition Fighting Solidarity during martial law in Poland.