I haven’t found much information, but Tanusha 3 and 4 were deployed from the ISS today. In the past, they have transmitted FM on 437.050 MHz but I haven’t been able to find more details.
Definitely in favor of that. I heard the downlink of (what i believe is) Tanusha 3 today more or less by accident.
Nice signal, would be cool to have that in SatNOGS.
EDIT:
Ah, these are already in the Database.
https://db.satnogs.org/satellite/99974/
https://db.satnogs.org/satellite/99973/
But the transmitters aren’t quite correct, I think.
I heard one of the repeater downlinks at 145.800 MHz today. I think 437.050 is the UL rather then the DL.
ISS is configured to relay the downlinks of the TANUSHA experiments, because they might have a higher spin rate than expected. That’s the reason why you can receive the downlinks also on 145.800 +/- doppler.
Ah, that explains it. Thanks!
So the HAMs doing FM voice QSOs via the ISS relay are interfering with the telemetry signal from the satellites, aren’t they? Thats very unfortunate 
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yes, it is very unfortunate - as ARISS has not authorized such use of that repeater.
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We have lots of good observations of Tanusha-3 but I don’t think anyone has heard Tanusha-4 yet. We also have captured it on relay such as:
https://network.satnogs.org/observations/214596/
I still can’t make out the FM announcement, although it is clearer on the relay than the original 70cm beacon.
ARISS is aware of the hams using the relay - hopefully something can be done about it in the future if this telemetry relay is to be used again.
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After some recent observations with the latest TLEs, it looks like that Tanusha-3 has norad id 43597 and Tanusha-4 has norad id 43598. Network and db are updated with these norad ids.
Unfortunately there aren’t any reports for signal of Tanusha-4, so signals in Tanusha-4 observations are those of Tanusha-3 that transmits on the same frequency (but different doppler correction), so they should be vetted as bad.
related observations:
Tanusha-3: https://network.satnogs.org/observations/236487/
Tanusha-4: https://network.satnogs.org/observations/237280/
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Agreed. I re-vetted a couple of the Tanusha-4 observations that I scheduled as Bad, but I guess it will take an administrator to change the rest:
https://network.satnogs.org/observations/?future=0&good=1&bad=0&unvetted=0&failed=0&norad=43598
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