Pratham student satellite returns to life

Pratham satellite in Mumbai Mirror

Pratham satellite in Mumbai Mirror

The Mumbai Mirror reports on the return to life of the Pratham satellite launched on September 26, 2016. Pratham carries an amateur radio payload and was built by students at the Indian Institute of Technology Bombay (IIT-B).

The newspaper says:

After one month of radio silence, the ground station at the Indian Institute of Technology, Bombay, received a signal from Pratham satellite on the morning of December 17, suggesting that it was still alive and kicking. Pratham is the first satellite to be sent into space by an IIT.

The satellite had received signals in the first few weeks after its launch on September 26, this year, but had gone quiet in November, due to technical difficulties, causing team members to worry if it was still operational.

“The fact that we received a signal on Saturday suggests that the satellite has now stabilized and is back to collecting data,” said Ratnesh Mishra, project manager of Pratham. While Mishra says that the incoming signal means that the satellite is functional, data transfer is yet to take place.

Read the full article at http://mumbaimirror.indiatimes.com/mumbai/other/IIT-Bs-satellite-gets-a-signal-from-space/articleshow/56075162.cms

Pratham info https://amsat-uk.org/2016/09/07/pratham-student-satellite/

AlSat-1N and Pratham launch from India

AlSat-1N Mission PatchThe AlSat-1N and Pratham satellites, both with amateur radio payloads, launched on the Indian ISRO PSLV-C35 mission at 0342 GMT on Monday, September 26, 2016, reports are requested.

Update Sept 27: The AlSat-1N signal has been received but nothing heard from Pratham. A Dorset radio amateur reports receiving a signal from PISAT (2240 MHz) which was also on the PSLV-C35 launch
https://twitter.com/uhf_satcom/status/780808329392168960

AMSAT-BB indicate the Pratham CW beacon on 145.980 MHz is active

The 3U CubeSat AlSat-1N was built in collaboration between the Algerian Space Agency (ASAL), UK Space Agency (UKSA), Surrey Space Centre (SSC) staff and Algerian students as a technology transfer and demonstrator for Algeria.

AlSat-1N is also hosting three UK payloads from various institutions and aims to take images of the Earth and send back data from the UK payloads.

The IARU coordinated downlink is 437.650 MHz 9k6 FSK.

Any downlinked data will be gratefully received at alsatnano@gmail.com
Both decoded hex files and recordings would be greatly appreciated. Richard Duke M0GSN is transmission authority in the UK under the SSC Club callsign M0GKK.

Further information on AlSat-1N can be downloaded from:

Information on the Pratham student satellite is at
https://amsat-uk.org/2016/09/07/pratham-student-satellite/

Pratham student satellite

SolidWorks rendering of the Pratham satellite - Credit IIT Bombay

SolidWorks rendering of the Pratham satellite – Credit IIT Bombay

The satellite Pratham built by students at the Indian Institute of Technology Bombay is expected to launch on the Indian PSLV-C35 mission planned for 0342 UT on Monday, September 26, 2016.

AMSAT-BB indicate the Pratham CW beacon on 145.980 MHz is active

Pratham, a 300x300x300mm satellite with a mass of 10 kg, aims to measure total electron count in a 800 km altitude Sun Synchronous Orbit (SSO).

Aayush Yadav of the Pratham team writes:

We, students of IIT Bombay, are glad to inform you that our project, Pratham, is ready and expected to launch with PSLV-C35. We would be really happy if  you all joined us in receiving our satellite’s beacon, details given below:

The beacon is estimated to switch on in the window of 25-30 degrees North and 4-8 degrees East as per the current TLE’s. Once switched on, it will remain so through out it’s orbit. The telemetry data will be switched on only over Europe (France) and India because of our power constraints. If you could, please receive the beacon and/or telemetry of the satellite and report back to the mail id’s as given below. The information for the satellite transmissions is given below,

Beacon:
Frequency: 145.980 MHz
Modulation: CW
Words per minute: 30
Power Emitted: 0.2 W (23 dBm)

Telemetry: To be switched on only over India and Europe (France)
Frequency: 437.455 MHz
Modulation: FSK
Rate: 1200 bps
Power Emitted: 0.06 W (18 dBm)

Kind Regards.
Team Pratham

Further information at http://www.aero.iitb.ac.in/pratham/

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