BOBAS 2 PDF Drukuj Email
Wpisany przez Łukasz Mosdorf   
Czwartek, 21 Maj 2009 18:45


The BOBAS2 project is the next student mission to the border of atmosphere. It is very similar to BOBAS, but this time we hope to avoid serious problems. The balloon was launched during Space Technology Festival, on 23.06.2007 at “Skwer kpt. Stanisława Skibniewskiego "Cubryny"”











Warsaw, “Skwer kpt. Stanisława Skibniewskiego "Cubryny"”

(look for Dni Technik Satelitarnych)



• 12:30 – presentation of the balloon, ground station, test of the telemetry systems

• 14:00 - start of the balloon

• 18:00 – burst of the balloon

• 18:20 – landing of the capsule

• 18:30 – start of capsule recovery

• 21:30 – end of mission


The capsule will be equipped with:

• Telemetric module Świerszcz 3 (eng: Cricket 3) – the module, which will be sending telemetry from the balloon about temperature, powering voltages etc. System will be transmitting near the frequency of 433MHz with CW modulation. This module will be participating in the DGSS experiment, to which I sincerely invite.

• GPS – Thanks to Peter SQ5MG

• CAMERA – on board there will be a TV camera which will be transmitting the view from the capsule at 2.4 GHz frequency

• other -  when other members of the group will prepare different modules for the flight


For radio amateurs:

I have a surprise for radio amateurs. The balloon may be an interesting proposition for a few radio amateur games, which additionally will allow obtaining a nice diploma.


• DGSS experiment. As I have already mentioned the Świerszcz 3 module will be sending telemetry using CW modulation at 433MHz frequency (the detailed frequency will be given in one week before the flight). DGSS experiment consist in the parallel receipt of this telemetry (also incomplete) by many ground stations. It will later enable to gather data from the area larger then the range of our local ground station and reduce the error rate (the errors will mask each other). The logs sent will enable the practical verification of the DGSS receipt theory.  You have a chance, then, for an active participation in a real experiment whose results will be used for designing a new way of space communication. The telemetry will be transmitted with the speed of about 30 groups per minute and we suggest CWGET application for receiving it. We will also need a radio with the Single Side Band modulation (SSB, CW) working at the frequency of 433MHz. Please send the telemetry received together with additional information (position of GS, description of antenna system and receiver, your call, your name and surname) to M.Stolarski() They will enable to improve the mathematical description of DGSS. On my part, I promise to publish the names of those who help in the experiment on the website, and the best will be awarded with the diplomas. I will soon give more information about decoding the telemetry.


o Additional information about DGSS communication

o CWGET application

o The description of telemetry (soon)

o Frequency (soon)

o Telemetry received (at the end of the project)

• People awarded with the diplomas (TOP 10)

o The list will be available when the project will be finished. The diplomas form the previous project can be seen here.



• The meteorological balloon has been founded by AVIOMET company ( ). Without them this mission would never take place.

• Gas, devices, TV kamera were founded by „Polskie Biuro do spraw Przestrzeni Kosmicznej”( )

• The electronics and hard work by Warsaw University of Technology ( )



Project coordinator: Marcin Stolarski SQ5FNQ

Members: Students of SKIK (Student Space Engineering Scientific Group) i SKA (Student Astronautic Group)



Zmieniony: Piątek, 22 Maj 2009 14:02