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- OSCAR_4 abstract "OSCAR IV (aka OSCAR 4) is the fourth amateur radio satellite launched by Project OSCAR and the first targeted for Geostationary orbit on 12 December 1965. The satellite was launched piggyback with three United States Air Force satellites on a Titan IIIC launch vehicle. The satellite was regular tetrahedron, 48 cm on each side. It had four independent monopole antennae and like Oscar 3 contained a tracking beacon transmitter and a communications repeater. It was powered by a solar cell array and batteries.The launch vehicle suffered a partial failure and placed OSCAR IV in an unplanned 161 km × 33000-km orbit preventing the planned coverage. OSCAR IV was built by the TRW Radio Club of Redondo Beach, California. It had a 3 Watt 10 kHz wide linear transponder (144 MHz uplink and 432 MHz downlink). The satellite remained in operation for 85 days, until March 16, 1966.The satellite eventually re-entered Earth's atmosphere on April 12, 1976. Only 12 two-way communications were established through the linear transponder, but one on December 22, 1965 was the first direct satellite communication between the United States and the USSR.".
- OSCAR_4 cosparId "1965-108C".
- OSCAR_4 wikiPageExternalLink projectoscar.wordpress.com.
- OSCAR_4 wikiPageID "38537258".
- OSCAR_4 wikiPageRevisionID "596824523".
- OSCAR_4 apsis "gee".
- OSCAR_4 cosparId "1965".
- OSCAR_4 hasPhotoCollection OSCAR_4.
- OSCAR_4 launchDate "1965-12-21".
- OSCAR_4 launchRocket Titan_IIIC.
- OSCAR_4 launchSite Cape_Canaveral_Air_Force_Station.
- OSCAR_4 launchSite Cape_Canaveral_Air_Force_Station_Space_Launch_Complex_41.
- OSCAR_4 name "OSCAR 4".
- OSCAR_4 orbitInclination "26.8".
- OSCAR_4 orbitReference Geocentric_orbit.
- OSCAR_4 orbitRegime "Geostationary planned".
- OSCAR_4 satcat "1902".
- OSCAR_4 subject Category:Amateur_radio_satellites.
- OSCAR_4 subject Category:Artificial_satellites_orbiting_Earth.
- OSCAR_4 type ArtificialSatellite.
- OSCAR_4 type Satellite.
- OSCAR_4 type Thing.
- OSCAR_4 comment "OSCAR IV (aka OSCAR 4) is the fourth amateur radio satellite launched by Project OSCAR and the first targeted for Geostationary orbit on 12 December 1965. The satellite was launched piggyback with three United States Air Force satellites on a Titan IIIC launch vehicle. The satellite was regular tetrahedron, 48 cm on each side. It had four independent monopole antennae and like Oscar 3 contained a tracking beacon transmitter and a communications repeater.".
- OSCAR_4 label "OSCAR 4".
- OSCAR_4 sameAs OSCAR_4.
- OSCAR_4 sameAs m.0r4rgj4.
- OSCAR_4 sameAs Q14174552.
- OSCAR_4 sameAs Q14174552.
- OSCAR_4 wasDerivedFrom OSCAR_4?oldid=596824523.
- OSCAR_4 isPrimaryTopicOf OSCAR_4.