Amsat P3A, P3B, P3C, P3E (Phase 3A, 3B, 3C, 3E / AO 10, 13 / Oscar 10, 13)

 

Amsat P3B (AO 10, Oscar 10)

Amsat P3A (Phase 3A) was the first satellite of the Amsat Phase 3. It was developed in the 70ies by AMSAT-DL and AMSAT-NA. It carried a communication payload consisting of 50 Watt Mode-B (435 MHz -> 146 MHz) linear-transponders. The satellite was to be inserted in a Molniya orbit by it's on board Star-13C kick motor. The satellite was lost during an Ariane-1 launch failure.

Amsat P3B (Phase 3B) was a similar repeat of the former satellite. It carried two transponders. The Mode-B transponder receives in the 70 cm-Band und transmits in the 2 m-Band. It has a bandwidth of 150 kHz for 50 simultaneous connections. The Mode-L transponder receives in the 23cm-Band and transmits in the 70 cm band with a bandwidth of  800 kHz for 300 simultaneous connections. In contrast to P3A, it carried a liquid bipropellant propulsion system featuring a S400 engine. Anfter reching orbit, it was renamed Oscar 10 (AO 10).

Amsat P3C (Phase 3C) was a repeat of P3B. It was renamed Oscar 13 in orbit.

Amsat P3E (Phase 3E) is a dedicated communication and scientific platform for a highly elliptical orbit around Earth. The spacecraft will be created in a joint process together with the Amsat P5A Mars mission by an international team under leadership of AMSAT-DL and continues the successful series of Amsat-Phase 3 satellites. Additionally the spacecraft will be a test bench for technology developped for the Mars mission. The main task of P3E is to act as communication platform for radio amateurs worldwide. A launch was planned in the period 2004 to 2006, but until now, no flight opportunity could be secured.

 

Nation: Germany
Type / Application: Amateur communication
Operator: Amsat DE
Contractors:
Equipment:
Configuration:
Propulsion: Star-13C (#A), S400 (#B, C)
Lifetime:
Mass:   
Orbit:

 

Satellite Date LS   Launcher Remarks:
Amsat P3A (Phase 3A, Oscar (9)) 23.05.1980 Ko ELA-1 F Ariane-1 with Firewheel, Firewheel Subsat 1, 2, 3, 4, CAT 2
Amsat P3B (Phase 3B, AO 10, Oscar 10) 16.06.1983 Ko ELA-1 Ariane-1 with ECS 1
Amsat P3C (Phase 3C, AO 13, Oscar 13) 15.06.1988 Ko ELA-2 Ariane-44LP H10 with Meteosat 3, PAS 1
Amsat P3E (Phase 3E, Amsat P3Express) with ?

 

Last update: 27.09.2009
Contact: gunter.krebs@skyrocket.de
© Gunter Dirk Krebs