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
Klla: AMSAT-NA