AMSAT-Oscar 10

First amateur satellite with onboard propulsion (which did not function entirely correctly, due to collision with launch vehicle after separation - hence the not-quite-Molniya-orbit). Computer control failed December 1986 due to radiation damage to memory. As a result, ground control stations have no control over the spacecraft. However, when the orientation is favourable (with respect to the Earth and Sun), OSCAR 10 continues to provide good Mode B service. If users coorperate, OSCAR 10 may provide many more years of service. Project Management: AMSAT-NA (Jan King, W3GEY) and AMSAT-DL (Karl Meinzer, DJ4ZC). Spacecraft sub-systems: Contributed by groups in Canada, Hungary, Japan, United States and West Germany.

Spacecraft
Spin Stabilized with Magnetorquers
Power: 50 W solar array, 2 NiCd batteries

Payload
Transponders/Beacons:

Mode B
Type: Linear, inverting, 50W
General Beacon: 145.809 MHz (Carrier)
Engineering Beacon: 145.987 MHz
Uplink: 435.030-435.180 MHz
Downlink: 145.975-145.825 MHz

Mode L (no longer operational)
Type: Linear, inverting, 50W
Beacons: 436.020, 436.040 MHz
Uplink 1269.450 MHz (800 kHz)
Downlink 436.550 MHz

Country of Origin	Germany
Manufacturer(s)	AMSAT International
Size	600 x 40 x 200 mm
Orbit	Elliptical (Molniya), inclination 27 degrees, altitude 3997/35449 km
Related Sites	AMSAT of Bermuda

Launch Facts

Name	Int'l Desig.	Date	Site	Vehicle	Orbit	Mass(kg)
Notes
Oscar 10	1983-058B	6/16/83	Kourou	Ariane 1	HEO	90