UMKA-1 telescope satellite mission

From R4UAB.RU

By the release of the 50th anniversary issue of the Space-Pi project digest, the UMKA-1 (RS40S) satellite will begin transmitting a series of postcards from orbit using the SSTV protocol.

Additional. At the request of fellow radio amateurs. One image is planned, dedicated to the radio amateur satellite “KEDR” RS1S, launched on August 3, 2011. Didn’t work for long. On January 4, 2012, it left the orbit. But the satellite was good.
A special eQSL card is provided for receiving this image!
Send reports and requests to umka1@school29.com

SSTV transmission schedule of the MKA “UMKA-1 (RS40S)”:

*** Transmission start: August 09, 2025 at ~00:59 UTC.**
*** Transmission end: August 10, 2025 at ~22:50 UTC.**

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Sadly, my antenna and SDR equipment is in Laos and I’m currently in Thailand, so I’ll miss this event… :frowning:

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No SSTV on pass 08:4x UTC.

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just telemetry

Hello everyone. Umka is broadcasting, but there is probably an error loading the schedule. I noticed at least one, so at some point the interval is more than five minutes. On the evening flights I will load a new schedule taking into account the incorrect image. The broadcast will be extended including Monday.

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Thanks for the update

Thanks for update - I heard tlm blips on 2 passes this morning but no SSTV. Not the best passes (max 20deg & 35deg) but would normally expect to get something. I was beginning to think I was being really unlucky hearing the tlm at max ele then sstv being when bird was too low or sky obstructed. I’ll try again later in the weekend.

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Got one image in JO31CE at 08:50 UTC near to the horizon. For the rest of the pass and the next pass telemetry only.

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Looks similar to the other ones from RS59S.

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Nothing heard except telemetry on a 70° pass over Norway.

Jomjom79

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Another low pass (c22deg max ele) @1932Z but only tlm heard again.

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only telemetry.

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2025-08-10 08:3x



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250810_08.33UTC Germany, JO31CE




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seen but too weak to get an image at 14.0°

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10:09 UTC

Got two more but managed to record off center audio instead of baseband… I blame my age..

Jomjom79

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Finally managed to get an image from this activation :slightly_smiling_face:

UMKA-1 (RS40S) 11-Aug-25 0959UTC

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