While the American segment of the ISS has data published on-line (http://spacestationlive.nasa.gov), the same cannot be said about the Russian segment.

It is known that telemetry is transmitted to the Earth on 128 kHz-wide PCM (Pulse-code modulated) FM (Frequency modulated) channels at 628, 630, 632, 634, 922, 928 MHz (source: http://www.ea1uro.com/megasat.html).

  • How could one receive, demodulate, and decode the telemetry?

  • Is Russian ISS telemetry encrypted?

  • Are there any high-frequency data items in the frames (transmitted more often than once a second - 1 Hz).

Historical reference: Sven Grahn's Space Radio page.

  • $\begingroup$ When you'll get your hands on the data, double check what you have really got. There's an anecdote about a fake telemetry provided to ESA. The data kept coming even after the station has been deorbited. translate.google.com/… $\endgroup$
    – user54
    Aug 23, 2013 at 11:08
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    $\begingroup$ @horsh - fodder for Skeptics.SE (an urban legend or a myth), I'm afraid. Folks from ESOC need to chime in on this. $\endgroup$ Aug 23, 2013 at 11:37
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    $\begingroup$ RAX-2 telemetry decoder is the software that can do your work rax.engin.umich.edu/?page_id=882 pe0sat.vgnet.nl/2013/telemetry-decoding $\endgroup$
    – Zaps
    Aug 30, 2013 at 6:27

1 Answer 1


RAX-2 telemetry decoder is the software that can do your work

Tutorial/How to use: pe0sat.vgnet.nl/2013/telemetry-decoding

  • 9
    $\begingroup$ To prevent link rot, you can expand your answer and include the most relevant bits from your experience and linked documents into the question. $\endgroup$ Aug 30, 2013 at 7:31
  • $\begingroup$ uhf-satcom.com/sband $\endgroup$ Aug 30, 2013 at 17:02
  • $\begingroup$ The russian segment uses Regul-OS as a command system, BITS2-12, and BR-9TsU-3 as telemetry systems. In general, the answer should be fleshed out much more. $\endgroup$ Aug 31, 2013 at 22:34
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    $\begingroup$ While these two links may answer the question, it is better to include the essential parts of the answer here and provide the link for reference. Link-only answers can become invalid, if the linked page changes. $\endgroup$
    – TildalWave
    Sep 6, 2013 at 17:53
  • $\begingroup$ The link rax.engin.umich.edu/?page_id=882 has apparently rotted: "The server at rax.engin.umich.edu is taking too long to respond." $\endgroup$
    – RonJohn
    Oct 3, 2017 at 16:04

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