Showing posts with label ZACUBE-1. Show all posts
Showing posts with label ZACUBE-1. Show all posts

Saturday, May 24, 2014

After a wonderful day at the SA AMSAT satellite symposium I have learned the following.

After a wonderful day at the SA AMSAT satellite symposium I found the following very interesting. (24May2014)
http://www.amsatsa.org.za/
  1. KLETSkous the 1U Cubesat build by volunteer Amateur Radio operators.



The planned payload for KLETSkous will be as follows.

  • A Linear transponder (2m uplink and 70 cm downlink)bandwidth of 20 kHz
  • Currently the frequencies in the 435.100 to 435.140 MHz range are considered for the uplink and 145.860 to 145.980 MHz for the downlink
  • The scientific payload will be a experiment analysing "Worm Holes"  (This experiment will try and find the portholes between Sun and Earth).
  • There was a live Transponder demo and a prototype of the space frame.


More information is available at http://www.amsatsa.org.za/



2) A presentation on the progress of the experiments on ZACube-1 was also very interesting.
ZACUBE-1 Cube sat Picture

  • Very nice pictures were captured from the VGA cameras.
  • Beacon TX power was also increased and should be easier to capture the signals.
  • They are now slowly deploying the long wire HF antenna in the following few weeks to enable the HF experiments.
More info available at http://www.cput.ac.za/blogs/fsati/zacube-1/

3) A presentation on the experiments of a Satellite propulsion system (Vacuum Arc Thruster)
Vacuum Arc Thruster
  • Vacuum arc thrusters are a potentially useful technology for use as microthrusters on microsats for the future.
  • It is basically a spark plug that generate sparks in a vacuum to propel the satellite. by (Jonathan Lun PhD Student SANSA Space Science,University of the Witwatersrand)

Friday, March 7, 2014

What a satellite frenzy

What a satellite frenzy.


Satellite prediction software Gpredict

Not more that a year ago you would not have seen anything like this. Its satellite heaven.

I was looking at the Gpredict screen this morning and could not believe what was happening.

There was 5 Amateur Satellites (ZACUBE-1, FUNCUBE, EAGLE2,DELFI-N3XT,CUTE-1.7  ...) above me and I had a quick look at the webSDR and could see multiple beacons all over the screen. Well there is now no excuse not to work satellites. You can pick and chose, Packet store and foreword FM transponders and Linear transponders, some even have cameras on board. What fun!. Some of the Satellites like the FM transponders can be communicated with a simple HF handheld transceiver. ($50 max)

Enjoy the Satellites.

Thursday, September 5, 2013

ZACUBE-1 (South Africa CubeSat-1)

ZACUBE-1 (South Africa)November 21st at  07:11:29 UTC.


The amateur radio CubeSat designed and built by students at the Cape Peninsular University of Technology in Bellville.
The current launch info has lift off scheduled for November 21st at  07:11:29 UTC.
Live launch video http://live.cput.ac.za/live.html
You should be able receive ZACUBE-1 satellite on this weSDR.



Satellite seems to be in 1k2 mode at the moment.
The keps that seems to be the best at the moment is 2013-066B (27Nov2013) from http://www.celestrak.com/NORAD/elements/tle-new.txt

TX power at the moment 0.5 wat.
more info at http://www.cput.ac.za/fsati
Here is a video recording of the telemetry.


The objectives of the mission are:
1) Training of post-graduate students in Satellite Systems Engineering.
2) Earth observation using a visible band matrix imager payload and an S-Band payload data transmitter (2.4 to 2.45 GHz).
3) UHF Store & Forward system (70 cm amateur band).


  • Uplink is 145.860 MHz
  • Downlink 437.345 MHz. Both links have selectable transmission rates of 1.2 kbps or 9.6 kbps.
  • Visible band matrix imager 115200 bps L-Band to S-band data transponder. (2.4 to 2.45 GHz).
  • HF beacon 14.099 MHz Hermanus Magnetic Observatory’s Dual Auroral Radar Network antenna at SANAE base in Antarctica (The HF beacon payload on 14.099 MHz ).
To decode the telemetry of ZAcube-1 download the software from http://www.dk3wn.info/software.shtml
Telemetry format

0C 16 - header
7A 61 63 75 62 65 30 31 2E - ASCII Text message00 00 19 6d 2C - Timestamp (ticks)0B 0e 2C - Battery bus voltage (volt)06 ad 2C - OBC temperature (°C)00 2E - Command counter

Telemetry decoder from http://www.dk3wn.info/software.shtml
Here is some pictures from the ZACUBE-1 camera


And many more follow the link to there site
http://www.cput.ac.za/blogs/fsati/2014/01/22/south-africa-on-a-clear-day-as-seen-by-tshepisosat/
Read more about it here.