There was a live satellite simulation on the action stage. Here, the SDX (Software Defined transponder) for AMSAT P3-E presented live through a SSB QSO's. In addition, there were technical explanations.
During the talks were Peter Gülzow, DB2OS AMSAT-DL a report on the current state and outlook of the activities during the construction of the amateur radio satellite AMSAT P3-E. Dr. Achim Vollhardt, DH2VA gave information on the interplanetary Mars mission AMSAT P5-A. Both lectures were so well attended that the seating for more than 200 visitors was no longer enough!
Amateurfunksatelliten - Wo sind sie geblieben?
June, 2008 Update on P3E:
Update on the P3E Amateur Radio Satellite At HAM RADIO 2008 AMSAT-DL gave presentations on the P3E and P5A projects.
Thomas Frey HB9SKA has kindly provided a short summary, from the AMSAT-DL Journal, on the current status of the Amateur Radio satellite P3E being built by AMSAT-DL.
It was reported at the AMSAT-DL Symposium 2008 that the mechanical work on P3E has been completed but it doesn't yet have the Internal Housekeeping Unit (IHU). There has been good progress on the transponder payloads with the 435 to 145 MHz software defined linear transponder (SDX) being demonstrated at HAM RADIO 2008 in Friedrichshafen, Germany.
It would appear that the cost quoted by Arianespace for the launch of P3E is outside the budget of AMSAT-DL, however, AMSAT-F has offered its support in any further negotiations.
The possibility of using launch sites operated by India, Russia or Japan is being investigated.
AMSAT Phase 3E, abbreviated P3E, will become the new satellite to enable stable communications from continent to continent for radio amateurs. The satellite, which is already under construction, should be ready for launch in mid-2007. With its transponders for 145, 435, 1268 and 2400 MHz, it continues the successes of its predecessors AO-10, AO-13 and AO-40. Radio amateurs, who were already active via those satellites, can be active over P3E immediately. Newcomers often already have at hand the most important elements for making radio contacts over the satellite. The 150 KG satellite will have its own thruster to bring it up to its final orbit. At a maximum orbital altitude of at least 35,000 KM, it will enable radio contacts for many hours over distances of nearly 18,000 KM on Earth. Thus it will be clearly an improvement over satellites in near-Earth orbits. Thanks to its slower motion across the sky, communications are possible without the need to re-aim the antenna constantly.
As a communications satellite, P3E will carry several transponders useful to radio amateurs and having bandwidths between 50 and 200 KHz. The emphasis will lie on the lower VHF/UHF frequencies between 145 and 2400 MHz. That simplifies the free world-wide radio operation independent of the propagation variability of short-wave and away from the anonymity of Internet chats. Due to the efficient HELAPS transmitter technology and a newly developed, software-defined transponder (SDX/STELLA), radio operation will also be possible for small and portable stations. The software technology will also enable flexible digital transmission methods. For microwave experiments, P3E includes additional beacons and transponders.
P3E is currently being built under the direction of AMSAT-DL by an international team, including groups from Finland, Belgium, Netherlands, Czech Republic, Hungary, AMSAT-NA (USA/Canada) and AMSAT-UK (Great Britain). The mechanical satellite structure is nearly finished and is being prepared for integration of electronic modules. An extensive test phase is planned to start in the spring of 2007.
In addition to its assignment as communications satellite, P3E will also carry preparatory experiments for a future AMSAT Mars mission. These include a new onboard computer and an ultra-stable reference oscillator, which can be used to improve communications also. The pictures from two new navigational cameras will enable new, live views from space.
The AMSAT P5-A will be the first spacecraft built by Radio Amateurs to go to the Red planet and the first ever private interplanetary spacecraft. It will use frequencies in the Amateur Satellite Service allocations at 2.4 and 10 GHz.
Video presentation of P5-A mission to Mars
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