AMSAT-OSCAR 7
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| AMSAT-OSCAR 7 | |
| Launch | |
|---|---|
| Date | 15 November 1974 |
| Vehicle | Delta 2310 |
| Site | Vandenberg AFB, Lompoc, CA USA |
| Orbit characteristics | |
| Altitude | 1,459 km (907 mi) |
| Inclination | 101.59° |
| Mass | 28.8 kg (63 lb) |
AO-7 (aka AMSAT-OSCAR 7) is an amateur satellite launched into orbit on 15 November 1974. It remained operational until a battery failure in 1981. On 21 June 2002 the satellite was heard again on its 2 meter beacon (145.9775 MHz CW) after 21 years of silence, and 27 years in space.[1]
AMSAT reported AO-7 still semi-operational on 6 April 2006, with reliable power only from its solar panels; the report stated the cause of the outage was a short circuit in a battery and the restoration of service was due to its becoming an open circuit. The satellite eclipses on every orbit during the northern summer and autumn; the rest of the year it is in continuous sunlight and alternates between transmission modes A and B.[2]
As of March 2008, contacts with AO-7 are reported daily.[3]
[edit] References
- ^ ARRLWeb: It's Aliiiiive! AMSAT-OSCAR 7 Satellite Returns from the Dead. American Radio Relay League (2002-06-24). Retrieved on 2008-03-01.
- ^ AMSAT - Satellite Detail - AMSAT-OSCAR 7. AMSAT (2006-04-06). Retrieved on 2008-03-01.
- ^ Carr, David; Bruninga, Bob (2008-03-18). OSCAR Satellite Status page by KD5QGR. Retrieved on 2008-03-18.
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