Category: Ham Satellite news

Satelliten har rapporterats frn flera lnder. ven ngon av dom sm cubesats som var ombord p SSETI har hrts.

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Hr kommer information och frekvenser fr SSETI och dess Cubesats. Mycket att lyssna p!
/Lars SM0TGU

SSETI Launch Offers Exciting Receiving Opportunities
The SSETI Express satellite is scheduled to launch at 06:52 UTC on Thursday, October 27 on board a Kosmos 3M launcher. Shortly after launch amateur radio operators around the world will have an exciting opportunity to begin receiving signals from four new satellites.

This is a quick listening guide to the frequencies expected to be used. The latest version of the SSETI Express handbook, which can be downloaded free of charge from the AMSAT-UK website contains full operational details. Visit http://www.uk.amsat.org/ to download your own copy.

Commencing at approximately 06:00 UTC on launch day, a live webstream of the ESA produced TV coverage of the launch is going to be provided by Howard G6LVB at:
http://www.streamingwizard.com/clients/space.asx

SSETI Express will coast for 74 minutes after orbital injection to ensure a good separation between SSETI Express and the other passengers and will then automatically deploy three Cubesats.

SSETI Express will have two main downlinks:
437.250 MHz @ 3 watts for 9600 baud FSK packets
2401.835 MHz @ 0.7 – 1.5 watts for 38400 bps FSK packets

The 2.4GHz-downlink transmitter will be mainly used to transmit picture data at rate of 38k4. However, it will be switched over to single channel FM U/S voice transponder operation occasionally as part of the payload cycle.

Here is a summary of the three Cubesats providing radio amateurs worldwide opportunities to hear the new spacecraft …

Ncube-2

The Norwegian student satellite, Ncube-2 is an experimental spacecraft that was developed and built by students from four Norwegian universities. Data transmissions and digipeater use 1200 and 9600 bps.

Downlink 437.305 @ 1.5 watts. The first transmissions will be 20 minutes after separation from SSETI Express. The message: DE LA1CUB NCUBE2 FF LA1CUB will be sent in morse at 26 words per minute using a 2400Hz tone.

At the end of the message an unnumbered AX.25 packet is sent containing the string: DE LA1CUB NCUBE2 NORWEGIAN CUBESAT – WWW.NCUBE.NO . The AX.25 header will include Callsign: NCUBE, and Destination: EARTH.

UWE-1

The UWE-1 spacecraft is a registered Pico-satellite of Julius Maximilians Universitaet Wuerzburg, Germany. Its research aim is to test IP based telecommunications protocols in space.

Downlink 437.505 @ 1.0 watts. The communication protocol is AX25. The satellite will transmit for about 1 sec every 1 minute.

XI-V

The XI-V satellite is a Pico-satellite of the University of Tokyo, Intelligent Space Systems Laboratory.

Downlink (telemetry) 437.345 @ 0.8 watts sending AFSK AX.25, 1200bps
Downlink (beacon) 437.465 @ 0.08 watts CW repeating every 30 seconds

The homepage for SSETI Express is at:
http://sseti.gte.tuwien.ac.at/express/mop/

The SERACC software, needed by radio amateurs to decode the telemetry and payload data from SSETI and to submit it to the main SSETI Express central database is available for download at:
http://sseti.gte.tuwien.ac.at/express/mop/index.php?uri=downloads.html

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Hur gr man fr att positionsbestmma en satellit?

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AMSAT P3-E Status

Dear All,

First of all I have to apologize for the little information about the P3-E progress over the last few month. Indeed, I gave an update during the recent AMSAT-UK Colloquium and also our AMSAT-DL magazine has a lot of information, which will be reprinted in the AMSAT-NA Journal and other sources with some delay.

To improve communications with our membership and worldwide audience, we decided last year to improve the information flow on our website using a new content management system(CMS, Mambo).

Unfortunately this took much longer than anticipated, but the new portal should be available to the public by December.

The CMS itself is almost fully functional, but we have to transfer and re-edit all the information from our old website. You can probably imagine, that this is still a lot of work.

However, once it is running, we hope to put more information on-line and also have a news section with more regular updates. Indeed, because of this, we almost stopped updating the old website..

So far, AMSAT P3-E is making good progress, but slowly. Some modules have already arrived in Marburg for the integration, but other module builders make good use of the additional time due to the yet unknown launch date, which sometimes makes it also hard to motivate the people.

The wiring harness is defined and will be build and integrated into the S/C soon. Thanks to the CAN-bus and our CAN-DO module controllers, it will be not such a big beast as on previous P3 satellites. Talking about the CAN-DO, another radiation testing was performed.

This time irradiation with protons. The CAN-DO module and other selected electronic components for P3-E and P5-A were exposed to protons with an energy of 60 MeV. The CAN-DO module stopped operating at 61 krad, which is good for a projected mission duration of more than 10 years. Since
the CAN-DO module is one of the most critical parts on P3-E and P5-A, this gives us a better feeling and that it should not suffer from a radiation induced failure.

Very good progress was also reported from the development teams of the new IHU-3, both in terms of hardware and
software. While a big step forward was made, the full integration and testing of the operational IPS software and all it s functionality (including the turbo codes and software defined modems) is next. Within the next couple of weeks, a radiation testing is also planned for the IHU-3.

In addition to the analog transponders flying on P3-E, we will also look into the possibility to have an SDT (software defined transponder) flying on P3-E for the first time. The recent developments on Software Defined Radio technologies and STELLA, as reported previously here, might give us completely new ideas. While this is quite late and various details must still be discussed, the necessary RF
interfaces are already available in the module space we have identified for this. Expect to hear more about this in the next few weeks.

As mentioned before, an extremely critical step was taken a few days ago, when Ariane 5 scored a double success for Arianespace with the successful launch of Syracuse 3A and Galaxy 15 on-board flight V168.

While we do not yet have an official launch manifest, we are in full contact with our partners at Arianespace. Everyone is working hard to find a suitable slot for P3-E to the benefit of both sides. While the year 2005 is almost over, our target to get P3-E into orbit is still
2006 and will remain so. Clearly, the continuing success of the new Ariane 5 will help us too. Initial arrangements for environmental testing, including vibration and thermal vacuum testing are already made.

Indeed, we still need a lot of support for P3-E and donations. But with all the contributions we are receiving, P3-E will be truly another international satellite. I m in particular delighted, that AMSAT-NA joined and supports the P3-E project. We have excellent personal relationship between our organisations and apart from the fun,things
are developing really good to the benefit of EAGLE, P3-E and all the projects on the horizon.

Best wishes
Peter Guelzow, DB2OS
President AMSAT-DL
P3-E Project leader

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AO-51 kommer nu att g i hgeffektslge och nu r rtt tid att lyssna med er handapparat om ni inte hrt den tidigare.

17 Oct – 23 Oct
FM Repeater, V/U, High Power Mode
Uplink: 145.920 mhz FM, 67 hz PL Tone
Downlink 435.300 mhz FM

AO-51

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Lite utanfr amatrmnet men vldigt lsvrt. Se speciellt den handburna PLB.

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