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P3E-Satellite - About AMSAT-DL

International Satellites for Communications, Science and Education

AMSAT Germany (AMSAT-DL) is an alliance of engineers, technicians, scientists, students, radio amateurs and space travel enthusiasts. Over the past 30 years AMSAT (AMateur SATellite corporation) has developed methods to realize inexpensive space flight missions. Six successful satellite missions have already been carried out. The satellites are developed, built, launched and operated by us. Research and industry profit from application and qualification of new technologies onboard AMSAT-DL satellites.

The P3E-satellite currently under construction continues the successful series of AO-10, AO-13 and AO-40. It will again support communications from continent to continent. The downlink frequencies are in the bands at 145 and 2400 MHz, the uplinks at 435 and 1268 MHz. Thus it can be used by all radio amateurs who were previously active on the earlier Phase-3 satellites. Additionally P3E provides possibilities for experimentation using uplinks at 2.45 and 5.8 GHz as well as downlinks at 10,5, 24 and 47 GHz. With the new development of a software-based transponder, the problem of "crocodiles" can be dealt with better than with LEILA onboard AO-40. The P3E-satellite should be ready for launch by mid-2007.

Launch of the AMSAT P3D satellite on an Ariane-5 rocket in Kourou

The Missions

1974    AMSAT-OSCAR 07

AO-07 put AMSAT-DL into space in 1974. We provided a variety of hardware components and supported the integration process. The satellite is still periodically active today.

1980    AMSAT-Phase 3A (P3A)

The Phase-3A satellite came about, just as all successor satellites in the AMSAT Phase-3 series, under the direction of AMSAT-DL. Unfortunately P3A was lost due to failure of the launch vehicle.

1981    UoSAT-OSCAR 09

AMSAT-DL provided the battery charge regulator for the English satellite UO-9. It converted solar energy from the solar cells to charge the batteries and for operation of the satellite.

1983    AMSAT-OSCAR 10 (P3B)

AO-10 was completed in only three years of construction and was in operation for over 20 years. As with all P3 satellites, intercontinental radio contacts were possible through it.

1988    AMSAT-OSCAR 13 (P3C)

AO-13 successfully continued the series of P3 communications satellites. A special data transponder was also aboard for the first time. AO-13 vaporized at the end of 1996 upon reentry into the Earth's atmosphere.

1992    AMSAT-OSCAR 21 (RS-14)

The RUDAK-II payload provided by AMSAT-DL onboard AO-21 utilized two computer systems for communications, one of them in RISC DSP technology.

2000    AMSAT-OSCAR 40 (P3D)

AO-40, shown here during the launch preparations in Kourou, forms the basis for a Mars probe thanks to its large 2-meter design. AO-40 is still in Earth orbit.

2003    20-m-Antenne Bochum

New technology enabled AMSAT-DL to begin reactivation of the 20m parabolic reflector antenna under the Radom in Bochum, Germany. The antenna received signals from numerous space probes and since 2006 has been operational as a command station for the AMSAT Mars mission.

2007    AMSAT-Phase 3E (P3E)

P3E is intended to provide radio communications and serve as a test satellite for the Mars mission. It is currently in the AMSAT-DL laboratory in Marburg being prepared for launch.

2009    AMSAT-Phase 5A (P5A/Go-Mars)

The first suitable launch window is in 2009 for the P5A Mars mission currently under development. The probe is intended to circle Mars and transmit to Earth data useable by everyone and to drop off a payload.

Satellite projects of AMSAT are divided into five phases. Phase 3 describes Earth satellites in a highly elliptical orbit, while systems traveling to other heavenly bodies are categorized as Phase 5. When an AMSAT satellite begins operation in space, it is assigned a sequential OSCAR number. (OSCAR = Orbiting Satellite Carrying Amateur Radio)

Responsible: AMSAT-DL e.V.
Ernst-Giller-Straße 20
D-35039 Marburg
Since we have been a non-profit organization since 1973, we can issue a donation receipt upon request.
Links/References: AMSAT Germany e.V.
GO-Mars P5A-Mission
ARIANE Rocket/Arianespace
IUZ, Observatory Bochum

© 2006, AMSAT-DL Imprint